diff --git a/dataforge-vis-common/build.gradle.kts b/dataforge-vis-common/build.gradle.kts
index 2898a778..678a9e72 100644
--- a/dataforge-vis-common/build.gradle.kts
+++ b/dataforge-vis-common/build.gradle.kts
@@ -19,6 +19,8 @@ kotlin {
             dependencies {
                 api("hep.dataforge:dataforge-output-html:$dataforgeVersion")
                 api(npm("text-encoding"))
+                api("org.jetbrains:kotlin-extensions:1.0.1-pre.83-kotlin-1.3.50")
+                api(npm("core-js"))
             }
         }
     }
diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualGroup.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualGroup.kt
index ca100ac8..38ddf19f 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualGroup.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualGroup.kt
@@ -19,14 +19,17 @@ abstract class AbstractVisualGroup : AbstractVisualObject(), MutableVisualGroup
      */
     abstract override val children: Map<NameToken, VisualObject> //get() = _children
 
-    //TODO replace by custom object with get/set functionality
-    protected abstract val styles: MutableMap<Name, Meta>
+    /**
+     * Styles, defined in this group. A style could be defined but not applied
+     * TODO replace by custom object with get/set functionality
+     */
+    protected abstract val styleSheet: MutableMap<Name, Meta>
 
-    override fun getStyle(name: Name): Meta? = styles[name]
+    override fun getStyle(name: Name): Meta? = styleSheet[name]
 
-    override fun setStyle(name: Name, meta: Meta) {
+    override fun addStyle(name: Name, meta: Meta, apply: Boolean) {
         fun VisualObject.applyStyle(name: Name, meta: Meta) {
-            if (style.contains(name.toString())) {
+            if (styles.contains(name)) {
                 //full update
                 //TODO do a fine grained update
                 if (this is AbstractVisualObject) {
@@ -41,8 +44,10 @@ abstract class AbstractVisualGroup : AbstractVisualObject(), MutableVisualGroup
                 }
             }
         }
-        styles[name] = meta
-        applyStyle(name, meta)
+        styleSheet[name] = meta
+        if (apply) {
+            applyStyle(name, meta)
+        }
     }
 
 
diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualObject.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualObject.kt
index 12043a27..e63382ca 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualObject.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/AbstractVisualObject.kt
@@ -12,9 +12,6 @@ internal data class PropertyListener(
     val action: (name: Name, oldItem: MetaItem<*>?, newItem: MetaItem<*>?) -> Unit
 )
 
-/**
- * Abstract implementation of [VisualObject]
- */
 abstract class AbstractVisualObject : VisualObject {
 
     @Transient
@@ -22,13 +19,10 @@ abstract class AbstractVisualObject : VisualObject {
 
     abstract override var properties: Config?
 
-    /**
-     * Style(s) of the object
-     */
-    override var style: List<String>
-        get() = properties?.let { it[STYLE_KEY].stringList } ?: emptyList()
+    override var styles: List<Name>
+        get() = properties?.get(STYLE_KEY).stringList.map(String::toName)
         set(value) {
-            setProperty(STYLE_KEY, value)
+            setProperty(STYLE_KEY, value.map { it.toString() })
             styleChanged()
         }
 
@@ -67,8 +61,10 @@ abstract class AbstractVisualObject : VisualObject {
     /**
      * Collect all styles for this object in a laminate
      */
-    protected val appliedStyles: Meta
-        get() = styleCache ?: Laminate(style.map { it.toName() }.mapNotNull(::findStyle)).merge().also { styleCache = it }
+    protected val mergedStyles: Meta
+        get() = styleCache ?: findAllStyles().merge().also {
+            styleCache = it
+        }
 
 
     /**
@@ -81,9 +77,9 @@ abstract class AbstractVisualObject : VisualObject {
 
     override fun getProperty(name: Name, inherit: Boolean): MetaItem<*>? {
         return if (inherit) {
-            properties?.get(name) ?: appliedStyles[name] ?: parent?.getProperty(name, inherit)
+            properties?.get(name) ?: mergedStyles[name] ?: parent?.getProperty(name, inherit)
         } else {
-            properties?.get(name) ?: appliedStyles[name]
+            properties?.get(name) ?: mergedStyles[name]
         }
     }
 
@@ -96,7 +92,7 @@ abstract class AbstractVisualObject : VisualObject {
     }
 }
 
-internal fun VisualObject.findStyle(styleName: Name): Meta? {
+fun VisualObject.findStyle(styleName: Name): Meta? {
     if (this is VisualGroup) {
         val style = getStyle(styleName)
         if (style != null) return style
diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/MutableVisualGroup.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/MutableVisualGroup.kt
index 8aa3e8d5..761c0b20 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/MutableVisualGroup.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/MutableVisualGroup.kt
@@ -44,7 +44,7 @@ interface VisualGroup : Provider, Iterable<VisualObject>, VisualObject {
     /**
      * Add or replace style with given name
      */
-    fun setStyle(name: Name, meta: Meta)
+    fun addStyle(name: Name, meta: Meta, apply: Boolean = true)
 
     operator fun get(name: Name): VisualObject? {
         return when {
diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObject.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObject.kt
index 93f368a4..7bc3b262 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObject.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObject.kt
@@ -1,9 +1,6 @@
 package hep.dataforge.vis.common
 
-import hep.dataforge.meta.Config
-import hep.dataforge.meta.Configurable
-import hep.dataforge.meta.MetaItem
-import hep.dataforge.meta.MetaRepr
+import hep.dataforge.meta.*
 import hep.dataforge.names.Name
 import hep.dataforge.names.asName
 import hep.dataforge.names.toName
@@ -56,11 +53,16 @@ interface VisualObject : MetaRepr, Configurable {
      */
     fun removeChangeListener(owner: Any?)
 
-    var style: List<String>
+    /**
+     * List of names of styles applied to this object
+     */
+    var styles: List<Name>
+
+    fun findAllStyles(): Laminate = Laminate(styles.distinct().mapNotNull(::findStyle))
 
     companion object {
         const val TYPE = "visual"
-        val STYLE_KEY = "style".asName()
+        val STYLE_KEY = "@style".asName()
 
         //const val META_KEY = "@meta"
         //const val TAGS_KEY = "@tags"
@@ -81,5 +83,5 @@ fun VisualObject.setProperty(key: String, value: Any?) = setProperty(key.toName(
  *  Apply style to [VisualObject] by adding it to the [style] list
  */
 fun VisualObject.applyStyle(name: String) {
-    style = style + name
+    styles = styles + name.toName()
 }
\ No newline at end of file
diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObjectDelegate.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObjectDelegate.kt
index c51cdfe8..1dba2c7f 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObjectDelegate.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObjectDelegate.kt
@@ -4,6 +4,7 @@ import hep.dataforge.meta.*
 import hep.dataforge.names.Name
 import hep.dataforge.names.NameToken
 import hep.dataforge.names.asName
+import hep.dataforge.names.toName
 import hep.dataforge.values.Value
 import kotlin.jvm.JvmName
 import kotlin.properties.ReadOnlyProperty
@@ -35,81 +36,79 @@ class VisualObjectDelegate(
 }
 
 class VisualObjectDelegateWrapper<T>(
+    val obj: VisualObject,
     val key: Name?,
     val default: T,
     val inherited: Boolean,
     val write: Config.(name: Name, value: T) -> Unit = { name, value -> set(name, value) },
     val read: (MetaItem<*>?) -> T?
-) : ReadWriteProperty<VisualObject, T> {
+) : ReadWriteProperty<Any?, T> {
 
     //private var cachedName: Name? = null
 
-    override fun getValue(thisRef: VisualObject, property: KProperty<*>): T {
+    override fun getValue(thisRef: Any?, property: KProperty<*>): T {
         val name = key ?: property.name.asName()
-        return if (inherited) {
-            read(thisRef.getProperty(name))
-        } else {
-            read(thisRef.config[name])
-        } ?: default
+        return read(obj.getProperty(name,inherited))?:default
     }
 
-    override fun setValue(thisRef: VisualObject, property: KProperty<*>, value: T) {
+    override fun setValue(thisRef: Any?, property: KProperty<*>, value: T) {
         val name = key ?: property.name.asName()
-        thisRef.config[name] = value
+        obj.config[name] = value
     }
 }
 
 
 fun VisualObject.value(default: Value? = null, key: String? = null, inherited: Boolean = false) =
-    VisualObjectDelegateWrapper(key?.asName(), default, inherited) { it.value }
+    VisualObjectDelegateWrapper(this, key?.toName(), default, inherited) { it.value }
 
 fun VisualObject.string(default: String? = null, key: String? = null, inherited: Boolean = false) =
-    VisualObjectDelegateWrapper(key?.asName(), default, inherited) { it.string }
+    VisualObjectDelegateWrapper(this, key?.toName(), default, inherited) { it.string }
 
 fun VisualObject.boolean(default: Boolean? = null, key: String? = null, inherited: Boolean = false) =
-    VisualObjectDelegateWrapper(key?.asName(), default, inherited) { it.boolean }
+    VisualObjectDelegateWrapper(this, key?.toName(), default, inherited) { it.boolean }
 
 fun VisualObject.number(default: Number? = null, key: String? = null, inherited: Boolean = false) =
-    VisualObjectDelegateWrapper(key?.asName(), default, inherited) { it.number }
+    VisualObjectDelegateWrapper(this, key?.toName(), default, inherited) { it.number }
 
 fun VisualObject.double(default: Double? = null, key: String? = null, inherited: Boolean = false) =
-    VisualObjectDelegateWrapper(key?.asName(), default, inherited) { it.double }
+    VisualObjectDelegateWrapper(this, key?.toName(), default, inherited) { it.double }
 
 fun VisualObject.int(default: Int? = null, key: String? = null, inherited: Boolean = false) =
-    VisualObjectDelegateWrapper(key?.asName(), default, inherited) { it.int }
+    VisualObjectDelegateWrapper(this, key?.toName(), default, inherited) { it.int }
 
 
 fun VisualObject.node(key: String? = null, inherited: Boolean = true) =
-    VisualObjectDelegateWrapper(key?.asName(), null, inherited) { it.node }
+    VisualObjectDelegateWrapper(this, key?.toName(), null, inherited) { it.node }
 
 fun VisualObject.item(key: String? = null, inherited: Boolean = true) =
-    VisualObjectDelegateWrapper(key?.asName(), null, inherited) { it }
+    VisualObjectDelegateWrapper(this, key?.toName(), null, inherited) { it }
 
 //fun <T : Configurable> Configurable.spec(spec: Specification<T>, key: String? = null) = ChildConfigDelegate<T>(key) { spec.wrap(this) }
 
 @JvmName("safeString")
 fun VisualObject.string(default: String, key: String? = null, inherited: Boolean = false) =
-    VisualObjectDelegateWrapper(key?.asName(), default, inherited) { it.string }
+    VisualObjectDelegateWrapper(this, key?.toName(), default, inherited) { it.string }
 
 @JvmName("safeBoolean")
 fun VisualObject.boolean(default: Boolean, key: String? = null, inherited: Boolean = false) =
-    VisualObjectDelegateWrapper(key?.asName(), default, inherited) { it.boolean }
+    VisualObjectDelegateWrapper(this, key?.toName(), default, inherited) { it.boolean }
 
 @JvmName("safeNumber")
 fun VisualObject.number(default: Number, key: String? = null, inherited: Boolean = false) =
-    VisualObjectDelegateWrapper(key?.asName(), default, inherited) { it.number }
+    VisualObjectDelegateWrapper(this, key?.toName(), default, inherited) { it.number }
 
 @JvmName("safeDouble")
 fun VisualObject.double(default: Double, key: String? = null, inherited: Boolean = false) =
-    VisualObjectDelegateWrapper(key?.asName(), default, inherited) { it.double }
+    VisualObjectDelegateWrapper(this, key?.toName(), default, inherited) { it.double }
 
 @JvmName("safeInt")
 fun VisualObject.int(default: Int, key: String? = null, inherited: Boolean = false) =
-    VisualObjectDelegateWrapper(key?.asName(), default, inherited) { it.int }
+    VisualObjectDelegateWrapper(this, key?.toName(), default, inherited) { it.int }
 
 
 inline fun <reified E : Enum<E>> VisualObject.enum(default: E, key: String? = null, inherited: Boolean = false) =
     VisualObjectDelegateWrapper(
+        this,
         key?.let { NameToken(it).asName() },
         default,
         inherited
@@ -121,11 +120,11 @@ fun <T> VisualObject.merge(
     key: String? = null,
     transformer: (Sequence<MetaItem<*>>) -> T
 ): ReadOnlyProperty<VisualObject, T> {
-    return object : ReadOnlyProperty<VisualObject, T> {
-        override fun getValue(thisRef: VisualObject, property: KProperty<*>): T {
-            val name = key?.asName() ?: property.name.asName()
+    return object : ReadOnlyProperty<Any?, T> {
+        override fun getValue(thisRef: Any?, property: KProperty<*>): T {
+            val name = key?.toName() ?: property.name.asName()
             val sequence = sequence<MetaItem<*>> {
-                var thisObj: VisualObject? = thisRef
+                var thisObj: VisualObject? = this@merge
                 while (thisObj != null) {
                     thisObj.config[name]?.let { yield(it) }
                     thisObj = thisObj.parent
diff --git a/dataforge-vis-common/src/jsMain/kotlin/hep.dataforge.vis.hmr/HMR.kt b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/HMR.kt
similarity index 97%
rename from dataforge-vis-common/src/jsMain/kotlin/hep.dataforge.vis.hmr/HMR.kt
rename to dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/HMR.kt
index 37b4c4c1..5353fb03 100644
--- a/dataforge-vis-common/src/jsMain/kotlin/hep.dataforge.vis.hmr/HMR.kt
+++ b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/HMR.kt
@@ -1,4 +1,4 @@
-package hep.dataforge.vis.hmr
+package hep.dataforge.vis
 
 import kotlin.browser.document
 import kotlin.dom.hasClass
diff --git a/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/jsExtra.kt b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/jsExtra.kt
new file mode 100644
index 00000000..56751272
--- /dev/null
+++ b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/jsExtra.kt
@@ -0,0 +1,21 @@
+package hep.dataforge.vis
+
+inline fun <T : Any> jsObject(builder: T.() -> Unit): T {
+    val obj: T = js("({})") as T
+    return obj.apply {
+        builder()
+    }
+}
+
+inline fun js(builder: dynamic.() -> Unit): dynamic = jsObject(builder)
+
+//fun <T : Any> clone(obj: T) = objectAssign(jsObject<T> {}, obj)
+
+//inline fun <T : Any> assign(obj: T, builder: T.() -> Unit) = clone(obj).apply(builder)
+
+fun toPlainObjectStripNull(obj: Any) = js {
+    for (key in Object.keys(obj)) {
+        val value = obj.asDynamic()[key]
+        if (value != null) this[key] = value
+    }
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/GDMLTransformer.kt b/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/GDMLTransformer.kt
index 381e32f1..ee646f7a 100644
--- a/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/GDMLTransformer.kt
+++ b/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/GDMLTransformer.kt
@@ -14,7 +14,6 @@ import hep.dataforge.vis.spatial.VisualGroup3D
 import hep.dataforge.vis.spatial.VisualObject3D
 import hep.dataforge.vis.spatial.rotationOrder
 import scientifik.gdml.*
-import kotlin.collections.set
 import kotlin.random.Random
 
 class GDMLTransformer(val root: GDML) {
@@ -31,7 +30,7 @@ class GDMLTransformer(val root: GDML) {
      * A special group for local templates
      */
     val templates by lazy { VisualGroup3D() }
-    private val styles = HashMap<Name, Meta>()
+    private val styleCache = HashMap<Name, Meta>()
 
     var lUnit: LUnit = LUnit.MM
 
@@ -42,7 +41,7 @@ class GDMLTransformer(val root: GDML) {
     var solidConfiguration: VisualObject3D.(parent: GDMLVolume, solid: GDMLSolid) -> Unit = { _, _ -> }
 
     fun VisualObject.useStyle(name: String, builder: MetaBuilder.() -> Unit) {
-        styles.getOrPut(name.toName()){
+        styleCache.getOrPut(name.toName()){
             buildMeta(builder)
         }
         applyStyle(name)
@@ -60,35 +59,17 @@ class GDMLTransformer(val root: GDML) {
 
         obj.solidConfiguration(parent, solid)
     }
-
-    fun printStatistics() {
-        println("Solids:")
-        solidCounter.entries.sortedByDescending { it.value }.forEach {
-            println("\t$it")
-        }
-        println("Solids total: ${solidCounter.values.sum()}")
-    }
-
-    private val solidCounter = HashMap<String, Int>()
-
-    internal fun solidAdded(solid: GDMLSolid) {
-        solidCounter[solid.name] = (solidCounter[solid.name] ?: 0) + 1
-    }
+//
+//    internal fun solidAdded(solid: GDMLSolid) {
+//        solidCounter[solid.name] = (solidCounter[solid.name] ?: 0) + 1
+//    }
 
     var onFinish: GDMLTransformer.() -> Unit = {}
 
-    var optimizeSingleChild = false
-
-    //var optimizations: List<GDMLOptimization> = emptyList()
-
     internal fun finalize(final: VisualGroup3D): VisualGroup3D {
-//        var res = final
-//        optimizations.forEach {
-//            res = it(res)
-//        }
         final.templates = templates
-        styles.forEach {
-            final.setStyle(it.key, it.value)
+        styleCache.forEach {
+            final.addStyle(it.key, it.value, false)
         }
         final.rotationOrder = RotationOrder.ZXY
         onFinish(this@GDMLTransformer)
diff --git a/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/optimizations.kt b/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/optimizations.kt
deleted file mode 100644
index bf077d72..00000000
--- a/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/optimizations.kt
+++ /dev/null
@@ -1,58 +0,0 @@
-package hep.dataforge.vis.spatial.gdml
-
-import hep.dataforge.meta.update
-import hep.dataforge.names.asName
-import hep.dataforge.vis.common.MutableVisualGroup
-import hep.dataforge.vis.spatial.Point3D
-import hep.dataforge.vis.spatial.VisualGroup3D
-import hep.dataforge.vis.spatial.VisualObject3D
-import hep.dataforge.vis.spatial.plus
-import kotlin.collections.component1
-import kotlin.collections.component2
-
-typealias GDMLOptimization = GDMLTransformer.(VisualGroup3D) -> VisualGroup3D
-
-/**
- * Collapse nodes with single child
- */
-val optimizeSingleChild: GDMLOptimization = { tree ->
-    fun MutableVisualGroup.replaceChildren() {
-        children.forEach { (key, child) ->
-            if (child is VisualGroup3D && child.children.size == 1) {
-                val newChild = child.children.values.first().apply {
-                    config.update(child.config)
-                }
-
-                if (newChild is VisualObject3D) {
-                    newChild.apply {
-                        position += child.position
-                        rotation += child.rotation
-                        scale = when {
-                            scale == null && child.scale == null -> null
-                            scale == null -> child.scale
-                            child.scale == null -> scale
-                            else -> Point3D(
-                                scale!!.x * child.scale!!.x,
-                                scale!!.y * child.scale!!.y,
-                                scale!!.z * child.scale!!.z
-                            )
-                        }
-                    }
-                }
-
-                if (newChild is MutableVisualGroup) {
-                    newChild.replaceChildren()
-                }
-
-                //actual replacement
-                set(key.asName(), newChild)
-            } else if (child is MutableVisualGroup) {
-                child.replaceChildren()
-            }
-        }
-    }
-
-    tree.replaceChildren()
-
-    tree
-}
\ No newline at end of file
diff --git a/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/visualGDML.kt b/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/visualGDML.kt
index e3935a0f..3271fe38 100644
--- a/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/visualGDML.kt
+++ b/dataforge-vis-spatial-gdml/src/commonMain/kotlin/hep/dataforge/vis/spatial/gdml/visualGDML.kt
@@ -47,7 +47,7 @@ private fun VisualGroup3D.addSolid(
     name: String = "",
     block: VisualObject3D.() -> Unit = {}
 ): VisualObject3D {
-    context.solidAdded(solid)
+    //context.solidAdded(solid)
     val lScale = solid.lscale(context.lUnit)
     val aScale = solid.ascale()
     return when (solid) {
@@ -150,31 +150,13 @@ private fun VisualGroup3D.addPhysicalVolume(
     when (context.volumeAction(volume)) {
         GDMLTransformer.Action.ACCEPT -> {
             val group = volume(context, volume)
-            //optimizing single child case
-            if (context.optimizeSingleChild && group.children.size == 1) {
-                this[physVolume.name ?: ""] = group.children.values.first().apply {
-                    //Must set this to avoid parent reset error
-                    parent = null
-                    //setting offset from physical volume
-                    withPosition(
-                        context.lUnit,
-                        physVolume.resolvePosition(context.root),
-                        physVolume.resolveRotation(context.root),
-                        physVolume.resolveScale(context.root)
-                    )
-                    // in case when both phys volume and underlying volume have offset
-                    position += group.position
-                    rotation += group.rotation
-                }
-            } else {
-                this[physVolume.name ?: ""] = group.apply {
-                    withPosition(
-                        context.lUnit,
-                        physVolume.resolvePosition(context.root),
-                        physVolume.resolveRotation(context.root),
-                        physVolume.resolveScale(context.root)
-                    )
-                }
+            this[physVolume.name ?: ""] = group.apply {
+                withPosition(
+                    context.lUnit,
+                    physVolume.resolvePosition(context.root),
+                    physVolume.resolveRotation(context.root),
+                    physVolume.resolveScale(context.root)
+                )
             }
         }
         GDMLTransformer.Action.CACHE -> {
diff --git a/dataforge-vis-spatial-gdml/src/jsMain/kotlin/hep/dataforge/vis/spatial/gdml/demo/GDMLDemoApp.kt b/dataforge-vis-spatial-gdml/src/jsMain/kotlin/hep/dataforge/vis/spatial/gdml/demo/GDMLDemoApp.kt
index 63a255c0..cacc796b 100644
--- a/dataforge-vis-spatial-gdml/src/jsMain/kotlin/hep/dataforge/vis/spatial/gdml/demo/GDMLDemoApp.kt
+++ b/dataforge-vis-spatial-gdml/src/jsMain/kotlin/hep/dataforge/vis/spatial/gdml/demo/GDMLDemoApp.kt
@@ -1,33 +1,26 @@
 package hep.dataforge.vis.spatial.gdml.demo
 
 import hep.dataforge.context.Global
-import hep.dataforge.vis.common.VisualGroup
-import hep.dataforge.vis.hmr.ApplicationBase
-import hep.dataforge.vis.hmr.startApplication
+import hep.dataforge.vis.ApplicationBase
 import hep.dataforge.vis.spatial.Material3D.Companion.OPACITY_KEY
 import hep.dataforge.vis.spatial.Visual3DPlugin
 import hep.dataforge.vis.spatial.VisualGroup3D
 import hep.dataforge.vis.spatial.VisualObject3D
 import hep.dataforge.vis.spatial.attachChildren
+import hep.dataforge.vis.spatial.editor.propertyEditor
+import hep.dataforge.vis.spatial.editor.threeOutputConfig
+import hep.dataforge.vis.spatial.editor.visualObjectTree
 import hep.dataforge.vis.spatial.gdml.GDMLTransformer
 import hep.dataforge.vis.spatial.gdml.LUnit
 import hep.dataforge.vis.spatial.gdml.toVisual
-import hep.dataforge.vis.spatial.three.ThreeOutput
 import hep.dataforge.vis.spatial.three.ThreePlugin
 import hep.dataforge.vis.spatial.three.output
-import hep.dataforge.vis.spatial.tree.propertyEditor
-import hep.dataforge.vis.spatial.tree.render
-import hep.dataforge.vis.spatial.tree.toTree
-import kotlinx.html.InputType
+import hep.dataforge.vis.startApplication
 import kotlinx.html.dom.append
-import kotlinx.html.js.input
-import kotlinx.html.js.li
 import kotlinx.html.js.p
-import kotlinx.html.js.ul
-import org.w3c.dom.Element
+import org.w3c.dom.DragEvent
 import org.w3c.dom.HTMLDivElement
 import org.w3c.dom.HTMLElement
-import org.w3c.dom.events.Event
 import org.w3c.files.FileList
 import org.w3c.files.FileReader
 import org.w3c.files.get
@@ -40,33 +33,27 @@ private class GDMLDemoApp : ApplicationBase() {
     /**
      * Handle mouse drag according to https://www.html5rocks.com/en/tutorials/file/dndfiles/
      */
-    private fun handleDragOver(event: Event) {
+    private fun handleDragOver(event: DragEvent) {
         event.stopPropagation()
         event.preventDefault()
-        event.asDynamic().dataTransfer.dropEffect = "copy"
+        event.dataTransfer?.dropEffect = "copy"
     }
 
     /**
      * Load data from text file
      */
-    private fun loadData(event: Event, block: (name: String, data: String) -> Unit) {
+    private fun loadData(event: DragEvent, block: (name: String, data: String) -> Unit) {
         event.stopPropagation()
         event.preventDefault()
 
 
-        val file = (event.asDynamic().dataTransfer.files as FileList)[0]
+        val file = (event.dataTransfer?.files as FileList)[0]
             ?: throw RuntimeException("Failed to load file")
 
         FileReader().apply {
             onload = {
                 val string = result as String
-
-//                try {
-                    block(file.name, string)
-//                } catch (ex: Exception) {
-//                    console.error(ex)
-//                }
-
+                block(file.name, string)
             }
             readAsText(file)
         }
@@ -99,53 +86,24 @@ private class GDMLDemoApp : ApplicationBase() {
         }
     }
 
-    fun setupLayers(element: Element, output: ThreeOutput) {
-        element.clear()
-        element.append {
-            ul("list-group") {
-                (0..9).forEach { layer ->
-                    li("list-group-item") {
-                        +"layer $layer"
-                        input(type = InputType.checkBox).apply {
-                            if (layer == 0) {
-                                checked = true
-                            }
-                            onchange = {
-                                if (checked) {
-                                    output.camera.layers.enable(layer)
-                                } else {
-                                    output.camera.layers.disable(layer)
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-        }
-    }
-
     private val gdmlConfiguration: GDMLTransformer.() -> Unit = {
         lUnit = LUnit.CM
         volumeAction = { volume ->
             when {
                 volume.name.startsWith("ecal01lay") -> GDMLTransformer.Action.REJECT
-                volume.name.startsWith("ecal") -> GDMLTransformer.Action.CACHE
                 volume.name.startsWith("UPBL") -> GDMLTransformer.Action.REJECT
                 volume.name.startsWith("USCL") -> GDMLTransformer.Action.REJECT
-                volume.name.startsWith("U") -> GDMLTransformer.Action.CACHE
                 volume.name.startsWith("VPBL") -> GDMLTransformer.Action.REJECT
                 volume.name.startsWith("VSCL") -> GDMLTransformer.Action.REJECT
-                volume.name.startsWith("V") -> GDMLTransformer.Action.CACHE
-                else -> GDMLTransformer.Action.ACCEPT
+                else -> GDMLTransformer.Action.CACHE
             }
         }
 
         solidConfiguration = { parent, solid ->
-            if (parent.physVolumes.isNotEmpty()
-                || solid.name.startsWith("Coil")
-                || solid.name.startsWith("Yoke")
-                || solid.name.startsWith("Magnet")
+            if (
+                solid.name.startsWith("Yoke")
                 || solid.name.startsWith("Pole")
+                || parent.physVolumes.isNotEmpty()
             ) {
                 useStyle("opaque") {
                     OPACITY_KEY to 0.3
@@ -185,18 +143,17 @@ private class GDMLDemoApp : ApplicationBase() {
                 }
             }
 
+            //Optimize tree
+            //(visual as? VisualGroup3D)?.transformInPlace(UnRef, RemoveSingleChild)
+
             message("Rendering")
-            val output = three.output(canvas as HTMLElement)
 
             //output.camera.layers.enable(1)
-            output.camera.layers.set(0)
-            setupLayers(layers, output)
+            val output = three.output(canvas as HTMLElement)
 
-            if (visual is VisualGroup) {
-                visual.toTree(editor::propertyEditor).render(tree as HTMLElement) {
-                    showCheckboxes = false
-                }
-            }
+            output.camera.layers.set(0)
+            layers.threeOutputConfig(output)
+            tree.visualObjectTree(visual, editor::propertyEditor)
 
             output.render(visual)
             message(null)
@@ -204,8 +161,8 @@ private class GDMLDemoApp : ApplicationBase() {
         }
 
         (document.getElementById("drop_zone") as? HTMLDivElement)?.apply {
-            addEventListener("dragover", { handleDragOver(it) }, false)
-            addEventListener("drop", { loadData(it, action) }, false)
+            addEventListener("dragover", { handleDragOver(it as DragEvent) }, false)
+            addEventListener("drop", { loadData(it as DragEvent, action) }, false)
         }
 
     }
diff --git a/dataforge-vis-spatial-gdml/src/jsMain/web/index.html b/dataforge-vis-spatial-gdml/src/jsMain/web/index.html
index f99f2803..22603bcf 100644
--- a/dataforge-vis-spatial-gdml/src/jsMain/web/index.html
+++ b/dataforge-vis-spatial-gdml/src/jsMain/web/index.html
@@ -29,45 +29,12 @@
 
 <div class="container-fluid">
     <div class="row">
-        <div class="col-9" id="canvas"></div>
-        <div class="col-3">
-
-            <div id="editor"></div>
-            <div class="accordion" id="accordion">
-                <div class="card">
-                    <div class="card-header" id="layers-header">
-                        <h2 class="mb-0">
-                            <button class="btn btn-link" type="button" data-toggle="collapse" data-target="#layers-body"
-                                    aria-expanded="true" aria-controls="layers-body">
-                                Layers
-                            </button>
-                        </h2>
-                    </div>
-
-                    <div id="layers-body" class="collapse show" aria-labelledby="layers-header"
-                         data-parent="#accordion">
-                        <div class="card-body">
-                            <div id="layers"></div>
-                        </div>
-                    </div>
-                </div>
-                <div class="card">
-                    <div class="card-header" id="tree-header">
-                        <h2 class="mb-0">
-                            <button class="btn btn-link collapsed" type="button" data-toggle="collapse"
-                                    data-target="#tree-body" aria-expanded="false" aria-controls="tree-body">
-                                Object tree
-                            </button>
-                        </h2>
-                    </div>
-                    <div id="tree-body" class="collapse" aria-labelledby="tree-header" data-parent="#accordion">
-                        <div class="card-body">
-                            <div id="tree"></div>
-                        </div>
-                    </div>
-                </div>
-            </div>
+        <div class="col-lg-3" id="tree"></div>
+        <div class="col-lg-6">
+            <div class="row" id="layers"></div>
+            <div class="row container" id="canvas"></div>
         </div>
+        <div class="col-lg-3" id="editor"></div>
     </div>
 </div>
 
diff --git a/dataforge-vis-spatial-gdml/src/jvmMain/kotlin/hep/dataforge/vis/spatial/gdml/testCubes.kt b/dataforge-vis-spatial-gdml/src/jvmMain/kotlin/hep/dataforge/vis/spatial/gdml/testCubes.kt
new file mode 100644
index 00000000..b0ff5b38
--- /dev/null
+++ b/dataforge-vis-spatial-gdml/src/jvmMain/kotlin/hep/dataforge/vis/spatial/gdml/testCubes.kt
@@ -0,0 +1,40 @@
+package hep.dataforge.vis.spatial.gdml
+
+import hep.dataforge.vis.spatial.Material3D
+import hep.dataforge.vis.spatial.Visual3DPlugin
+import hep.dataforge.vis.spatial.VisualGroup3D
+import hep.dataforge.vis.spatial.VisualObject3D
+import hep.dataforge.vis.spatial.transform.RemoveSingleChild
+import hep.dataforge.vis.spatial.transform.UnRef
+import nl.adaptivity.xmlutil.StAXReader
+import scientifik.gdml.GDML
+import java.io.File
+
+fun main() {
+    val file = File("D:\\Work\\Projects\\gdml.kt\\gdml-source\\cubes.gdml")
+
+    val xmlReader = StAXReader(file.inputStream(), "UTF-8")
+    val xml = GDML.format.parse(GDML.serializer(), xmlReader)
+    val visual = xml.toVisual {
+        lUnit = LUnit.CM
+
+        solidConfiguration = { parent, solid ->
+            if (parent.physVolumes.isNotEmpty()) {
+                useStyle("opaque") {
+                    Material3D.OPACITY_KEY to 0.3
+                    VisualObject3D.LAYER_KEY to 2
+                }
+            }
+        }
+    }
+
+    (visual as? VisualGroup3D)?.let { UnRef(it) }?.let { RemoveSingleChild(it) }
+
+    val string = Visual3DPlugin.json.stringify(VisualGroup3D.serializer(), visual)
+
+    val tmpFile = File.createTempFile("dataforge-visual", ".json")
+
+    tmpFile.writeText(string)
+
+    println(tmpFile.canonicalPath)
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial-gdml/src/jvmMain/kotlin/hep/dataforge/vis/spatial/gdml/testMain.kt b/dataforge-vis-spatial-gdml/src/jvmMain/kotlin/hep/dataforge/vis/spatial/gdml/testMain.kt
index 019a8856..7ef8a918 100644
--- a/dataforge-vis-spatial-gdml/src/jvmMain/kotlin/hep/dataforge/vis/spatial/gdml/testMain.kt
+++ b/dataforge-vis-spatial-gdml/src/jvmMain/kotlin/hep/dataforge/vis/spatial/gdml/testMain.kt
@@ -1,21 +1,30 @@
 package hep.dataforge.vis.spatial.gdml
 
+import hep.dataforge.vis.spatial.Material3D
 import hep.dataforge.vis.spatial.Visual3DPlugin
 import hep.dataforge.vis.spatial.VisualGroup3D
 import hep.dataforge.vis.spatial.opacity
+import hep.dataforge.vis.spatial.transform.RemoveSingleChild
+import hep.dataforge.vis.spatial.transform.UnRef
 import nl.adaptivity.xmlutil.StAXReader
 import scientifik.gdml.GDML
 import java.io.File
 
 fun main() {
     val file = File("D:\\Work\\Projects\\gdml.kt\\gdml-source\\BM@N.gdml")
-    //val file = File("D:\\Work\\Projects\\gdml.kt\\gdml-source\\cubes.gdml")
 
     val xmlReader = StAXReader(file.inputStream(), "UTF-8")
     val xml = GDML.format.parse(GDML.serializer(), xmlReader)
     val visual = xml.toVisual {
         lUnit = LUnit.CM
 
+        volumeAction = { volume ->
+            when {
+                volume.name.startsWith("ecal01lay") -> GDMLTransformer.Action.REJECT
+                else -> GDMLTransformer.Action.CACHE
+            }
+        }
+
         solidConfiguration = { parent, solid ->
             if (parent.physVolumes.isNotEmpty()
                 || solid.name.startsWith("Coil")
@@ -24,16 +33,14 @@ fun main() {
                 || solid.name.startsWith("Pole")
             ) {
                 useStyle("opaque") {
-                    opacity = 0.3
+                    Material3D.OPACITY_KEY to 0.3
                 }
             }
         }
-
-//        optimizeSingleChild = true
-        //optimizations = listOf(optimizeSingleChild)
-        onFinish = { printStatistics() }
     }
 
+  //  (visual as? VisualGroup3D)?.let { UnRef(it) }?.let { RemoveSingleChild(it) }
+
     val string = Visual3DPlugin.json.stringify(VisualGroup3D.serializer(), visual)
 
     val tmpFile = File.createTempFile("dataforge-visual", ".json")
diff --git a/dataforge-vis-spatial/build.gradle.kts b/dataforge-vis-spatial/build.gradle.kts
index ab4f5ce7..41672aee 100644
--- a/dataforge-vis-spatial/build.gradle.kts
+++ b/dataforge-vis-spatial/build.gradle.kts
@@ -27,14 +27,9 @@ kotlin {
         }
         jsMain {
             dependencies {
+                api(project(":wrappers"))
                 implementation(npm("three", "0.106.2"))
                 implementation(npm("@hi-level/three-csg", "1.0.6"))
-                implementation(npm("style-loader"))
-                implementation(npm("inspire-tree","6.0.1"))
-                implementation(npm("inspire-tree-dom","4.0.6"))
-                implementation(npm("jsoneditor"))
-//                api("org.jetbrains:kotlin-extensions:1.0.1-pre.83-kotlin-1.3.50")
-//                api(npm("core-js"))
             }
         }
     }
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/PolyLine.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/PolyLine.kt
new file mode 100644
index 00000000..eb8b4699
--- /dev/null
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/PolyLine.kt
@@ -0,0 +1,26 @@
+@file:UseSerializers(Point3DSerializer::class)
+
+package hep.dataforge.vis.spatial
+
+import hep.dataforge.io.ConfigSerializer
+import hep.dataforge.meta.Config
+import hep.dataforge.vis.common.AbstractVisualObject
+import hep.dataforge.vis.common.number
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.UseSerializers
+
+@Serializable
+class PolyLine(var points: List<Point3D>) : AbstractVisualObject(), VisualObject3D {
+    @Serializable(ConfigSerializer::class)
+    override var properties: Config? = null
+
+    override var position: Point3D? = null
+    override var rotation: Point3D? = null
+    override var scale: Point3D? = null
+
+    //var lineType by string()
+    var thickness by number(1.0, key = "material.thickness")
+}
+
+fun VisualGroup3D.polyline(vararg points: Point3D, name: String = "", action: PolyLine.() -> Unit = {}) =
+    PolyLine(points.toList()).apply(action).also { set(name, it) }
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt
index c01ddd1c..e4125590 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt
@@ -35,21 +35,27 @@ class Proxy(val templateName: Name) : AbstractVisualObject(), VisualGroup, Visua
     /**
      * Recursively search for defined template in the parent
      */
-    val prototype: VisualObject3D get() = (parent as? VisualGroup3D)?.getTemplate(templateName)
-        ?: error("Template with name $templateName not found in $parent")
+    val prototype: VisualObject3D
+        get() = (parent as? VisualGroup3D)?.getTemplate(templateName)
+            ?: error("Template with name $templateName not found in $parent")
 
     override fun getStyle(name: Name): Meta? = (parent as VisualGroup?)?.getStyle(name)
 
-    override fun setStyle(name: Name, meta: Meta) {
-        (parent as VisualGroup?)?.setStyle(name, meta)
+    override fun addStyle(name: Name, meta: Meta, apply: Boolean) {
+        (parent as VisualGroup?)?.addStyle(name, meta, apply)
         //do nothing
     }
 
     override fun getProperty(name: Name, inherit: Boolean): MetaItem<*>? {
         return if (inherit) {
-            super.getProperty(name, false) ?: prototype.getProperty(name, false) ?: parent?.getProperty(name, inherit)
+            properties?.get(name)
+                ?: mergedStyles[name]
+                ?: prototype.getProperty(name, false)
+                ?: parent?.getProperty(name, inherit)
         } else {
-            super.getProperty(name, false) ?: prototype.getProperty(name, false)
+            properties?.get(name)
+                ?: mergedStyles[name]
+                ?: prototype.getProperty(name, false)
         }
     }
 
@@ -74,6 +80,15 @@ class Proxy(val templateName: Name) : AbstractVisualObject(), VisualGroup, Visua
             ?: error("Prototype with name $name not found in ${this@Proxy}")
 
 
+    override var styles: List<Name>
+        get() = super.styles + prototype.styles
+        set(value) {
+            setProperty(VisualObject.STYLE_KEY, value.map { it.toString() })
+            styleChanged()
+        }
+
+    //override fun findAllStyles(): Laminate = Laminate((styles + prototype.styles).mapNotNull { findStyle(it) })
+
     inner class ProxyChild(val name: Name) : AbstractVisualObject(), VisualGroup {
 
         val prototype: VisualObject by lazy {
@@ -89,8 +104,8 @@ class Proxy(val templateName: Name) : AbstractVisualObject(), VisualGroup, Visua
 
         override fun getStyle(name: Name): Meta? = this@Proxy.getStyle(name)
 
-        override fun setStyle(name: Name, meta: Meta) {
-            this@Proxy.setStyle(name, meta)
+        override fun addStyle(name: Name, meta: Meta, apply: Boolean) {
+            this@Proxy.addStyle(name, meta, apply)
         }
 
         override var properties: Config?
@@ -113,12 +128,12 @@ class Proxy(val templateName: Name) : AbstractVisualObject(), VisualGroup, Visua
         override fun getProperty(name: Name, inherit: Boolean): MetaItem<*>? {
             return if (inherit) {
                 properties?.get(name)
-                    ?: appliedStyles[name]
-                    ?: parent?.getProperty(name, inherit)
+                    ?: mergedStyles[name]
                     ?: prototype.getProperty(name, inherit)
+                    ?: parent?.getProperty(name, inherit)
             } else {
                 properties?.get(name)
-                    ?: appliedStyles[name]
+                    ?: mergedStyles[name]
                     ?: prototype.getProperty(name, inherit)
             }
         }
@@ -141,4 +156,4 @@ inline fun VisualGroup3D.ref(
     templateName: Name,
     name: String = "",
     action: Proxy.() -> Unit = {}
-) = Proxy(templateName).apply(action).also { set(name, it) }
\ No newline at end of file
+) = Proxy(templateName).apply(action).also { set(name, it) }
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualGroup3D.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualGroup3D.kt
index 7cea1f28..410b9365 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualGroup3D.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualGroup3D.kt
@@ -43,7 +43,7 @@ class VisualGroup3D : AbstractVisualGroup(), VisualObject3D {
 
     //FIXME to be lifted to AbstractVisualGroup after https://github.com/Kotlin/kotlinx.serialization/issues/378 is fixed
     override var properties: Config? = null
-    override val styles = HashMap<Name, Meta>()
+    override val styleSheet = HashMap<Name, Meta>()
 
     override var position: Point3D? = null
     override var rotation: Point3D? = null
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualObject3D.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualObject3D.kt
index 0410677e..fb34174e 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualObject3D.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualObject3D.kt
@@ -10,6 +10,7 @@ import hep.dataforge.output.Output
 import hep.dataforge.vis.common.VisualObject
 import hep.dataforge.vis.spatial.VisualObject3D.Companion.DETAIL_KEY
 import hep.dataforge.vis.spatial.VisualObject3D.Companion.LAYER_KEY
+import hep.dataforge.vis.spatial.VisualObject3D.Companion.IGNORE_KEY
 import hep.dataforge.vis.spatial.VisualObject3D.Companion.SELECTED_KEY
 import hep.dataforge.vis.spatial.VisualObject3D.Companion.VISIBLE_KEY
 import kotlinx.serialization.UseSerializers
@@ -40,6 +41,7 @@ interface VisualObject3D : VisualObject {
         val SELECTED_KEY = "selected".asName()
         val DETAIL_KEY = "detail".asName()
         val LAYER_KEY = "layer".asName()
+        val IGNORE_KEY = "ignore".asName()
 
         val GEOMETRY_KEY = "geometey".asName()
 
@@ -111,6 +113,14 @@ var VisualObject.visible: Boolean?
     get() = getProperty(VISIBLE_KEY).boolean
     set(value) = setProperty(VISIBLE_KEY, value)
 
+/**
+ * If this property is true, the object will be ignored on render.
+ * Property is not inherited.
+ */
+var VisualObject.ignore: Boolean?
+    get() = getProperty(IGNORE_KEY,false).boolean
+    set(value) = setProperty(IGNORE_KEY, value)
+
 var VisualObject.selected: Boolean?
     get() = getProperty(SELECTED_KEY).boolean
     set(value) = setProperty(SELECTED_KEY, value)
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/RemoveSingleChild.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/RemoveSingleChild.kt
new file mode 100644
index 00000000..e8135dc3
--- /dev/null
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/RemoveSingleChild.kt
@@ -0,0 +1,58 @@
+package hep.dataforge.vis.spatial.transform
+
+import hep.dataforge.meta.update
+import hep.dataforge.names.asName
+import hep.dataforge.vis.common.MutableVisualGroup
+import hep.dataforge.vis.common.VisualGroup
+import hep.dataforge.vis.common.VisualObject
+import hep.dataforge.vis.spatial.*
+
+internal fun mergeChild(parent: VisualGroup, child: VisualObject): VisualObject {
+    return child.apply {
+
+        parent.properties?.let { config.update(it) }
+
+        if (this is VisualObject3D && parent is VisualObject3D) {
+            position += parent.position
+            rotation += parent.rotation
+            scale = when {
+                scale == null && parent.scale == null -> null
+                scale == null -> parent.scale
+                parent.scale == null -> scale
+                else -> Point3D(
+                    scale!!.x * parent.scale!!.x,
+                    scale!!.y * parent.scale!!.y,
+                    scale!!.z * parent.scale!!.z
+                )
+            }
+        }
+
+    }
+}
+
+object RemoveSingleChild : VisualTreeTransform<VisualGroup3D>() {
+
+    override fun VisualGroup3D.transformInPlace() {
+        fun MutableVisualGroup.replaceChildren() {
+            children.forEach { (childName, parent) ->
+                if (parent is Proxy) return@forEach //ignore refs
+                if (parent is MutableVisualGroup) {
+                    parent.replaceChildren()
+                }
+                if (parent is VisualGroup && parent.children.size == 1) {
+                    val child = parent.children.values.first()
+                    val newParent = mergeChild(parent, child)
+                    newParent.parent = null
+                    set(childName.asName(), newParent)
+                }
+            }
+        }
+
+        replaceChildren()
+        templates?.replaceChildren()
+    }
+
+    override fun VisualGroup3D.clone(): VisualGroup3D {
+        TODO()
+    }
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/UnRef.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/UnRef.kt
new file mode 100644
index 00000000..b09561e4
--- /dev/null
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/UnRef.kt
@@ -0,0 +1,49 @@
+package hep.dataforge.vis.spatial.transform
+
+import hep.dataforge.names.Name
+import hep.dataforge.names.asName
+import hep.dataforge.vis.common.MutableVisualGroup
+import hep.dataforge.vis.common.VisualGroup
+import hep.dataforge.vis.spatial.Proxy
+import hep.dataforge.vis.spatial.VisualGroup3D
+
+object UnRef : VisualTreeTransform<VisualGroup3D>() {
+    private fun VisualGroup.countRefs(): Map<Name, Int> {
+        return children.values.fold(HashMap()) { reducer, obj ->
+            if (obj is VisualGroup) {
+                val counter = obj.countRefs()
+                counter.forEach { (key, value) ->
+                    reducer[key] = (reducer[key] ?: 0) + value
+                }
+            } else if (obj is Proxy) {
+                reducer[obj.templateName] = (reducer[obj.templateName] ?: 0) + 1
+            }
+
+            return reducer
+        }
+    }
+
+    private fun MutableVisualGroup.unref(name: Name) {
+        (this as? VisualGroup3D)?.templates?.set(name, null)
+        children.filter { (it.value as? Proxy)?.templateName == name }.forEach { (key, value) ->
+            val proxy = value as Proxy
+            val newChild = mergeChild(proxy, proxy.prototype)
+            newChild.parent = null
+            set(key.asName(), newChild) // replace proxy with merged object
+        }
+
+        children.values.filterIsInstance<MutableVisualGroup>().forEach { it.unref(name) }
+    }
+
+    override fun VisualGroup3D.transformInPlace() {
+        val counts = countRefs()
+        counts.filter { it.value <= 1 }.forEach {
+            this.unref(it.key)
+        }
+    }
+
+    override fun VisualGroup3D.clone(): VisualGroup3D {
+        TODO()
+    }
+
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/VisualTreeTransform.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/VisualTreeTransform.kt
new file mode 100644
index 00000000..596aad56
--- /dev/null
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/transform/VisualTreeTransform.kt
@@ -0,0 +1,34 @@
+package hep.dataforge.vis.spatial.transform
+
+import hep.dataforge.vis.common.VisualObject
+
+/**
+ * A root class for [VisualObject] tree optimization
+ */
+abstract class VisualTreeTransform<T : VisualObject> {
+    protected abstract fun T.transformInPlace()
+    protected abstract fun T.clone(): T
+
+    operator fun invoke(source: T, inPlace: Boolean = true): T {
+        val newSource = if (inPlace) {
+            source
+        } else {
+            source.clone()
+        }
+        newSource.transformInPlace()
+
+        return newSource
+    }
+}
+
+fun <T : VisualObject> T.transform(vararg transform: VisualTreeTransform<T>): T {
+    var res = this
+    transform.forEach {
+        res = it(res)
+    }
+    return res
+}
+
+fun <T : VisualObject> T.transformInPlace(vararg transform: VisualTreeTransform<in T>) {
+    transform.forEach { it(this) }
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/commonTest/kotlin/hep/dataforge/vis/spatial/SerializationTest.kt b/dataforge-vis-spatial/src/commonTest/kotlin/hep/dataforge/vis/spatial/SerializationTest.kt
index 805fee43..09d59f29 100644
--- a/dataforge-vis-spatial/src/commonTest/kotlin/hep/dataforge/vis/spatial/SerializationTest.kt
+++ b/dataforge-vis-spatial/src/commonTest/kotlin/hep/dataforge/vis/spatial/SerializationTest.kt
@@ -1,6 +1,6 @@
 package hep.dataforge.vis.spatial
 
-import hep.dataforge.context.Global
+import hep.dataforge.vis.spatial.Visual3DPlugin.Companion.json
 import kotlinx.serialization.ImplicitReflectionSerializer
 import kotlin.test.Test
 import kotlin.test.assertEquals
@@ -12,9 +12,9 @@ class SerializationTest {
         val cube = Box(100f,100f,100f).apply{
             color(222)
         }
-        val meta = cube.toMeta()
-        println(meta)
-        val newCube = Box(Global,null, meta)
+        val string  = json.stringify(Box.serializer(),cube)
+        println(string)
+        val newCube = json.parse(Box.serializer(),string)
         assertEquals(cube.toMeta(),newCube.toMeta())
     }
 }
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/bootstrap.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/bootstrap.kt
new file mode 100644
index 00000000..7be121b1
--- /dev/null
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/bootstrap.kt
@@ -0,0 +1,15 @@
+package hep.dataforge.vis.spatial.editor
+
+import kotlinx.html.TagConsumer
+import kotlinx.html.js.div
+import kotlinx.html.js.h3
+import org.w3c.dom.HTMLElement
+
+inline fun TagConsumer<HTMLElement>.card(title: String, crossinline block: TagConsumer<HTMLElement>.() -> Unit) {
+    div("card w-100") {
+        div("card-body") {
+            h3(classes = "card-title") { +title }
+            block()
+        }
+    }
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/jsVisualTree.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/jsVisualTree.kt
similarity index 67%
rename from dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/jsVisualTree.kt
rename to dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/jsVisualTree.kt
index 84bd067d..13868fdf 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/jsVisualTree.kt
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/jsVisualTree.kt
@@ -1,6 +1,6 @@
 @file:Suppress("UNCHECKED_CAST_TO_EXTERNAL_INTERFACE")
 
-package hep.dataforge.vis.spatial.tree
+package hep.dataforge.vis.spatial.editor
 
 import hep.dataforge.meta.string
 import hep.dataforge.names.EmptyName
@@ -9,21 +9,19 @@ import hep.dataforge.names.NameToken
 import hep.dataforge.vis.common.VisualGroup
 import hep.dataforge.vis.common.VisualObject
 import hep.dataforge.vis.common.getProperty
+import hep.dataforge.vis.jsObject
 import hep.dataforge.vis.spatial.Proxy
 import hep.dataforge.vis.spatial.visible
-import org.w3c.dom.HTMLElement
+import info.laht.threekt.loaders.Cache.clear
+import kotlinx.html.div
+import kotlinx.html.dom.append
+import org.w3c.dom.Element
 import kotlin.js.json
 
 operator fun Name.plus(other: NameToken): Name = Name(tokens + other)
 
-fun InspireTree.render(element: HTMLElement, block: DomConfig.() -> Unit = {}) {
-    val config = (json(
-        "target" to element
-    ) as DomConfig).apply(block)
-    InspireTreeDOM(this, config)
-}
 
-internal fun createInspireTree(block: Config.() -> Unit = {}): InspireTree {
+private fun createInspireTree(block: Config.() -> Unit = {}): InspireTree {
     val config = (json(
         "checkbox" to json(
             "autoCheckChildren" to false
@@ -32,7 +30,7 @@ internal fun createInspireTree(block: Config.() -> Unit = {}): InspireTree {
     return InspireTree(config)
 }
 
-fun VisualGroup.toTree(onFocus: (VisualObject?, String?) -> Unit = { _, _ -> }): InspireTree {
+private fun VisualObject.toTree(onFocus: (VisualObject?, String?) -> Unit = { _, _ -> }): InspireTree {
 
     val map = HashMap<String, VisualObject>()
 
@@ -67,14 +65,18 @@ fun VisualGroup.toTree(onFocus: (VisualObject?, String?) -> Unit = { _, _ -> }):
 
     }
 
-    fun TreeNode.fillChildren(group: VisualGroup, groupName: Name) {
-        group.children.forEach { (token, obj) ->
-            val name = groupName + token
-            val nodeConfig = generateNodeConfig(obj, name)
-            val childNode = addChild(nodeConfig)
-            map[childNode.id] = obj
-            if (obj is VisualGroup) {
-                childNode.fillChildren(obj, name)
+    fun TreeNode.fillChildren(group: VisualObject, groupName: Name) {
+        if(group is VisualGroup) {
+            group.children.forEach { (token, obj) ->
+                if (!token.body.startsWith("@")) {
+                    val name = groupName + token
+                    val nodeConfig = generateNodeConfig(obj, name)
+                    val childNode = addChild(nodeConfig)
+                    map[childNode.id] = obj
+                    if (obj is VisualGroup) {
+                        childNode.fillChildren(obj, name)
+                    }
+                }
             }
         }
     }
@@ -119,3 +121,16 @@ fun VisualGroup.toTree(onFocus: (VisualObject?, String?) -> Unit = { _, _ -> }):
 
     return inspireTree
 }
+
+fun Element.visualObjectTree(group: VisualObject, onFocus: (VisualObject?, String?) -> Unit) {
+    clear()
+    append {
+        card("Visual object tree") {
+            val domConfig = jsObject<DomConfig> {
+                target = div()
+                showCheckboxes = false
+            }
+            InspireTreeDOM(group.toTree(onFocus), domConfig)
+        }
+    }
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/outputConfig.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/outputConfig.kt
new file mode 100644
index 00000000..f667fc99
--- /dev/null
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/outputConfig.kt
@@ -0,0 +1,37 @@
+package hep.dataforge.vis.spatial.editor
+
+import hep.dataforge.vis.spatial.three.ThreeOutput
+import kotlinx.html.InputType
+import kotlinx.html.dom.append
+import kotlinx.html.js.div
+import kotlinx.html.js.input
+import kotlinx.html.js.label
+import org.w3c.dom.Element
+import kotlin.dom.clear
+
+fun Element.threeOutputConfig(output: ThreeOutput) {
+    clear()
+    append {
+        card("Layers"){
+            div("row") {
+                (0..11).forEach { layer ->
+                    div("col-1") {
+                        label { +layer.toString() }
+                        input(type = InputType.checkBox).apply {
+                            if (layer == 0) {
+                                checked = true
+                            }
+                            onchange = {
+                                if (checked) {
+                                    output.camera.layers.enable(layer)
+                                } else {
+                                    output.camera.layers.disable(layer)
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/propertyEditor.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/propertyEditor.kt
new file mode 100644
index 00000000..d718127e
--- /dev/null
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/editor/propertyEditor.kt
@@ -0,0 +1,63 @@
+package hep.dataforge.vis.spatial.editor
+
+import hep.dataforge.io.toJson
+import hep.dataforge.meta.*
+import hep.dataforge.vis.common.VisualObject
+import hep.dataforge.vis.common.findStyle
+import hep.dataforge.vis.jsObject
+import hep.dataforge.vis.spatial.Material3D.Companion.COLOR_KEY
+import hep.dataforge.vis.spatial.Material3D.Companion.OPACITY_KEY
+import hep.dataforge.vis.spatial.VisualObject3D.Companion.VISIBLE_KEY
+import hep.dataforge.vis.spatial.color
+import hep.dataforge.vis.spatial.opacity
+import hep.dataforge.vis.spatial.prototype
+import hep.dataforge.vis.spatial.visible
+import kotlinx.html.dom.append
+import kotlinx.html.js.div
+import kotlinx.html.js.h4
+import org.w3c.dom.Element
+import kotlin.dom.clear
+
+//FIXME something rotten in JS-Meta converter
+fun Meta.toDynamic() = JSON.parse<dynamic>(toJson().toString())
+
+
+fun Element.propertyEditor(item: VisualObject?, name: String?) {
+    clear()
+    if (item != null) {
+        append {
+            card("Properties") {
+                val config = (item.properties ?: item.prototype?.properties) ?: EmptyMeta
+                val metaToEdit = config.builder().apply {
+                    VISIBLE_KEY to (item.visible ?: true)
+                    COLOR_KEY to (item.color ?: "#ffffff")
+                    OPACITY_KEY to (item.opacity ?: 1.0)
+                }
+                val dMeta: dynamic = metaToEdit.toDynamic()
+                val options: JSONEditorOptions = jsObject {
+                    mode = "form"
+                    onChangeJSON = { item.config.update(DynamicMeta(it.asDynamic())) }
+                }
+                JSONEditor(div(), options, dMeta)
+            }
+
+            val styles = item.styles
+            if (styles.isNotEmpty()) {
+                card("Styles") {
+                    item.styles.forEach { style ->
+                        val styleMeta = item.findStyle(style)
+                        h4("container") { +style.toString() }
+                        if (styleMeta != null) {
+                            div("container").apply {
+                                val options: JSONEditorOptions = jsObject {
+                                    mode = "view"
+                                }
+                                JSONEditor(this, options, styleMeta.toDynamic())
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/Materials.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/Materials.kt
index e6c72174..8e575169 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/Materials.kt
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/Materials.kt
@@ -4,6 +4,7 @@ import hep.dataforge.meta.*
 import hep.dataforge.values.ValueType
 import hep.dataforge.vis.common.Colors
 import hep.dataforge.vis.spatial.Material3D
+import info.laht.threekt.materials.LineBasicMaterial
 import info.laht.threekt.materials.Material
 import info.laht.threekt.materials.MeshBasicMaterial
 import info.laht.threekt.materials.MeshPhongMaterial
@@ -13,8 +14,37 @@ import info.laht.threekt.math.Color
 object Materials {
     val DEFAULT_COLOR = Color(Colors.darkgreen)
     val DEFAULT = MeshPhongMaterial().apply {
-        this.color.set(DEFAULT_COLOR)
+        color.set(DEFAULT_COLOR)
     }
+    val DEFAULT_LINE_COLOR = Color(Colors.black)
+    val DEFAULT_LINE = LineBasicMaterial().apply {
+        color.set(DEFAULT_LINE_COLOR)
+    }
+
+
+    private val materialCache = HashMap<Meta, Material>()
+    private val lineMaterialCache = HashMap<Meta, Material>()
+
+    fun getMaterial(meta: Meta): Material = materialCache.getOrPut(meta) {
+        MeshBasicMaterial().apply {
+            color = meta["color"]?.color() ?: DEFAULT_COLOR
+            opacity = meta["opacity"]?.double ?: 1.0
+            transparent = meta["transparent"].boolean ?: (opacity < 1.0)
+            //node["specularColor"]?.let { specular = it.color() }
+            //side = 2
+        }
+    }
+
+    fun getLineMaterial(meta: Meta): Material = lineMaterialCache.getOrPut(meta) {
+        LineBasicMaterial().apply {
+            color = meta["color"]?.color() ?: DEFAULT_LINE_COLOR
+            opacity = meta["opacity"].double ?: 1.0
+            transparent = meta["transparent"].boolean ?: (opacity < 1.0)
+            linewidth = meta["thickness"].double ?: 1.0
+        }
+    }
+
+
 }
 
 /**
@@ -41,26 +71,26 @@ fun MetaItem<*>.color(): Color {
     }
 }
 
-private val materialCache = HashMap<Meta, Material>()
-
 /**
  * Infer Three material based on meta item
  */
 fun Meta?.jsMaterial(): Material {
     return if (this == null) {
         Materials.DEFAULT
-    } else
-    //TODO add more options for material
-        return materialCache.getOrPut(this) {
-            MeshBasicMaterial().apply {
-                color = get("color")?.color() ?: Materials.DEFAULT_COLOR
-                opacity = get("opacity")?.double ?: 1.0
-                transparent = get("transparent").boolean ?: (opacity < 1.0)
-                //node["specularColor"]?.let { specular = it.color() }
-                //side = 2
-            }
-        }
+    } else {
+        Materials.getMaterial(this)
+    }
 }
 
-fun Material3D?.jsMaterial(): Material = this?.config.jsMaterial()
+fun Meta?.jsLineMaterial(): Material {
+    return if (this == null) {
+        Materials.DEFAULT_LINE
+    } else{
+        Materials.getLineMaterial(this)
+    }
+}
+
+
+fun Material3D?.jsMaterial(): Material = this?.config.jsMaterial()
+fun Material3D?.jsLineMaterial(): Material = this?.config.jsLineMaterial()
 
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/MeshThreeFactory.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/MeshThreeFactory.kt
new file mode 100644
index 00000000..2b0c5d21
--- /dev/null
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/MeshThreeFactory.kt
@@ -0,0 +1,99 @@
+package hep.dataforge.vis.spatial.three
+
+import hep.dataforge.meta.boolean
+import hep.dataforge.meta.node
+import hep.dataforge.names.asName
+import hep.dataforge.names.plus
+import hep.dataforge.names.startsWith
+import hep.dataforge.vis.spatial.Material3D
+import hep.dataforge.vis.spatial.VisualObject3D
+import hep.dataforge.vis.spatial.layer
+import hep.dataforge.vis.spatial.material
+import info.laht.threekt.core.BufferGeometry
+import info.laht.threekt.geometries.EdgesGeometry
+import info.laht.threekt.geometries.WireframeGeometry
+import info.laht.threekt.objects.LineSegments
+import info.laht.threekt.objects.Mesh
+import kotlin.reflect.KClass
+
+/**
+ * Basic geometry-based factory
+ */
+abstract class MeshThreeFactory<T : VisualObject3D>(
+    override val type: KClass<out T>
+) : ThreeFactory<T> {
+    /**
+     * Build a geometry for an object
+     */
+    abstract fun buildGeometry(obj: T): BufferGeometry
+
+    private fun Mesh.applyEdges(obj: T) {
+        children.find { it.name == "edges" }?.let { remove(it) }
+        //inherited edges definition, enabled by default
+        if (obj.getProperty(EDGES_ENABLED_KEY).boolean != false) {
+            val material = obj.getProperty(EDGES_MATERIAL_KEY).node.jsLineMaterial()
+            add(
+                LineSegments(
+                    EdgesGeometry(geometry as BufferGeometry),
+                    material
+                )
+            )
+        }
+    }
+
+    private fun Mesh.applyWireFrame(obj: T) {
+        children.find { it.name == "wireframe" }?.let { remove(it) }
+        //inherited wireframe definition, disabled by default
+        if (obj.getProperty(WIREFRAME_ENABLED_KEY).boolean == true) {
+            val material = obj.getProperty(WIREFRAME_MATERIAL_KEY).node.jsLineMaterial()
+            add(
+                LineSegments(
+                    WireframeGeometry(geometry as BufferGeometry),
+                    material
+                )
+            )
+        }
+    }
+
+    override fun invoke(obj: T): Mesh {
+        //TODO add caching for geometries using templates
+        val geometry = buildGeometry(obj)
+
+        //JS sometimes tries to pass Geometry as BufferGeometry
+        @Suppress("USELESS_IS_CHECK") if (geometry !is BufferGeometry) error("BufferGeometry expected")
+
+        val mesh = Mesh(geometry, obj.material.jsMaterial()).apply {
+            matrixAutoUpdate = false
+            applyEdges(obj)
+            applyWireFrame(obj)
+            //set position for mesh
+            updatePosition(obj)
+
+            layers.enable(obj.layer)
+            children.forEach {
+                it.layers.enable(obj.layer)
+            }
+        }
+
+        //add listener to object properties
+        obj.onPropertyChange(this) { name, _, _ ->
+            when {
+                name.startsWith(VisualObject3D.GEOMETRY_KEY) -> mesh.geometry = buildGeometry(obj)
+                name.startsWith(WIREFRAME_KEY) -> mesh.applyWireFrame(obj)
+                name.startsWith(EDGES_KEY) -> mesh.applyEdges(obj)
+                else -> mesh.updateProperty(obj, name)
+            }
+        }
+        return mesh
+    }
+
+    companion object {
+        val EDGES_KEY = "edges".asName()
+        val WIREFRAME_KEY = "wireframe".asName()
+        val ENABLED_KEY = "enabled".asName()
+        val EDGES_ENABLED_KEY = EDGES_KEY + ENABLED_KEY
+        val EDGES_MATERIAL_KEY = EDGES_KEY + Material3D.MATERIAL_KEY
+        val WIREFRAME_ENABLED_KEY = WIREFRAME_KEY + ENABLED_KEY
+        val WIREFRAME_MATERIAL_KEY = WIREFRAME_KEY + Material3D.MATERIAL_KEY
+    }
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeFactory.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeFactory.kt
index c190f048..94e71f5e 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeFactory.kt
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeFactory.kt
@@ -1,22 +1,14 @@
 package hep.dataforge.vis.spatial.three
 
-import hep.dataforge.meta.boolean
-import hep.dataforge.meta.node
 import hep.dataforge.names.Name
-import hep.dataforge.names.asName
-import hep.dataforge.names.plus
 import hep.dataforge.names.startsWith
 import hep.dataforge.provider.Type
 import hep.dataforge.vis.common.VisualObject
 import hep.dataforge.vis.spatial.*
 import hep.dataforge.vis.spatial.Material3D.Companion.MATERIAL_KEY
-import hep.dataforge.vis.spatial.VisualObject3D.Companion.GEOMETRY_KEY
 import hep.dataforge.vis.spatial.three.ThreeFactory.Companion.TYPE
 import info.laht.threekt.core.BufferGeometry
 import info.laht.threekt.core.Object3D
-import info.laht.threekt.geometries.EdgesGeometry
-import info.laht.threekt.geometries.WireframeGeometry
-import info.laht.threekt.objects.LineSegments
 import info.laht.threekt.objects.Mesh
 import kotlin.reflect.KClass
 
@@ -46,30 +38,6 @@ internal fun Object3D.updatePosition(obj: VisualObject3D) {
     updateMatrix()
 }
 
-internal fun <T : VisualObject3D> Mesh.updateFrom(obj: T) {
-    matrixAutoUpdate = false
-
-    //inherited edges definition, enabled by default
-    if (obj.getProperty(MeshThreeFactory.EDGES_ENABLED_KEY).boolean != false) {
-        val material = obj.getProperty(MeshThreeFactory.EDGES_MATERIAL_KEY).node?.jsMaterial() ?: Materials.DEFAULT
-        add(LineSegments(EdgesGeometry(geometry as BufferGeometry), material))
-    }
-
-    //inherited wireframe definition, disabled by default
-    if (obj.getProperty(MeshThreeFactory.WIREFRAME_ENABLED_KEY).boolean == true) {
-        val material = obj.getProperty(MeshThreeFactory.WIREFRAME_MATERIAL_KEY).node?.jsMaterial() ?: Materials.DEFAULT
-        add(LineSegments(WireframeGeometry(geometry as BufferGeometry), material))
-    }
-
-    //set position for mesh
-    updatePosition(obj)
-
-    layers.enable(obj.layer)
-    children.forEach {
-        it.layers.enable(obj.layer)
-    }
-}
-
 /**
  * Unsafe invocation of a factory
  */
@@ -82,53 +50,6 @@ operator fun <T : VisualObject3D> ThreeFactory<T>.invoke(obj: Any): Object3D {
     }
 }
 
-/**
- * Basic geometry-based factory
- */
-abstract class MeshThreeFactory<T : VisualObject3D>(override val type: KClass<out T>) : ThreeFactory<T> {
-    /**
-     * Build a geometry for an object
-     */
-    abstract fun buildGeometry(obj: T): BufferGeometry
-
-
-    override fun invoke(obj: T): Mesh {
-        //create mesh from geometry
-        return buildMesh(obj) { buildGeometry(it) }
-    }
-
-    companion object {
-        val EDGES_KEY = "edges".asName()
-        val WIREFRAME_KEY = "wireframe".asName()
-        val ENABLED_KEY = "enabled".asName()
-        val EDGES_ENABLED_KEY = EDGES_KEY + ENABLED_KEY
-        val EDGES_MATERIAL_KEY = EDGES_KEY + MATERIAL_KEY
-        val WIREFRAME_ENABLED_KEY = WIREFRAME_KEY + ENABLED_KEY
-        val WIREFRAME_MATERIAL_KEY = WIREFRAME_KEY + MATERIAL_KEY
-
-        fun <T : VisualObject3D> buildMesh(obj: T, geometryBuilder: (T) -> BufferGeometry): Mesh {
-            //TODO add caching for geometries using templates
-            val geometry = geometryBuilder(obj)
-
-            //JS sometimes tries to pass Geometry as BufferGeometry
-            @Suppress("USELESS_IS_CHECK") if (geometry !is BufferGeometry) error("BufferGeometry expected")
-
-            val mesh = Mesh(geometry, obj.material.jsMaterial())
-
-            mesh.updateFrom(obj)
-
-            //add listener to object properties
-            obj.onPropertyChange(this) { name, _, _ ->
-                mesh.updateProperty(obj, name)
-                if (name.startsWith(GEOMETRY_KEY)) {
-                    mesh.geometry = geometryBuilder(obj)
-                }
-            }
-            return mesh
-        }
-    }
-}
-
 fun Object3D.updateProperty(source: VisualObject, propertyName: Name) {
     if (this is Mesh && propertyName.startsWith(MATERIAL_KEY)) {
         //updated material
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeLineFactory.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeLineFactory.kt
new file mode 100644
index 00000000..cb109e8b
--- /dev/null
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreeLineFactory.kt
@@ -0,0 +1,32 @@
+package hep.dataforge.vis.spatial.three
+
+import hep.dataforge.vis.spatial.PolyLine
+import hep.dataforge.vis.spatial.layer
+import hep.dataforge.vis.spatial.material
+import info.laht.threekt.core.Geometry
+import info.laht.threekt.core.Object3D
+import info.laht.threekt.objects.LineSegments
+import kotlin.reflect.KClass
+
+object ThreeLineFactory : ThreeFactory<PolyLine> {
+    override val type: KClass<out PolyLine> get() = PolyLine::class
+
+    override fun invoke(obj: PolyLine): Object3D {
+        val geometry = Geometry().apply {
+            vertices = obj.points.toTypedArray()
+        }
+
+        val material = obj.material.jsLineMaterial()
+        return LineSegments(geometry, material).apply {
+
+            updatePosition(obj)
+            layers.enable(obj.layer)
+
+            //add listener to object properties
+            obj.onPropertyChange(this) { propertyName, _, _ ->
+                updateProperty(obj, propertyName)
+            }
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt
index db90a39e..be1f7803 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt
@@ -33,6 +33,7 @@ class ThreePlugin : AbstractPlugin() {
         objectFactories[Convex::class] = ThreeConvexFactory
         objectFactories[Sphere::class] = ThreeSphereFactory
         objectFactories[ConeSegment::class] = ThreeCylinderFactory
+        objectFactories[PolyLine::class] = ThreeLineFactory
     }
 
     private fun findObjectFactory(type: KClass<out VisualObject3D>): ThreeFactory<*>? {
@@ -46,7 +47,7 @@ class ThreePlugin : AbstractPlugin() {
             is VisualGroup3D -> {
                 val group = ThreeGroup()
                 obj.children.forEach { (name, child) ->
-                    if (child is VisualObject3D) {
+                    if (child is VisualObject3D && child.ignore != true) {
                         try {
                             val object3D = buildObject3D(child)
                             object3D.name = name.toString()
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/propertyEditor.kt b/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/propertyEditor.kt
deleted file mode 100644
index 782ada2b..00000000
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/propertyEditor.kt
+++ /dev/null
@@ -1,98 +0,0 @@
-package hep.dataforge.vis.spatial.tree
-
-import hep.dataforge.io.toJson
-import hep.dataforge.meta.DynamicMeta
-import hep.dataforge.meta.builder
-import hep.dataforge.meta.update
-import hep.dataforge.vis.common.VisualObject
-import hep.dataforge.vis.spatial.Material3D.Companion.COLOR_KEY
-import hep.dataforge.vis.spatial.Material3D.Companion.OPACITY_KEY
-import hep.dataforge.vis.spatial.VisualObject3D.Companion.VISIBLE_KEY
-import hep.dataforge.vis.spatial.color
-import hep.dataforge.vis.spatial.opacity
-import hep.dataforge.vis.spatial.prototype
-import hep.dataforge.vis.spatial.visible
-import kotlinx.html.InputType
-import kotlinx.html.dom.append
-import kotlinx.html.js.*
-import org.w3c.dom.Element
-import kotlin.dom.clear
-
-fun Element.propertyEditor(item: VisualObject?, name: String?) {
-    clear()
-    if (item != null) {
-        append {
-            div("card") {
-                div("card-body") {
-                    h3(classes = "card-title") {
-                        +(name ?: "")
-                    }
-                    form {
-                        div("form-group row") {
-                            label("col-form-label col-4") {
-                                +"Color: "
-                            }
-                            input(InputType.color, classes = "form-control col-8") {
-                                value = item.color ?: "#ffffff"
-                            }.apply {
-                                onInputFunction = {
-                                    item.color = value
-                                }
-                            }
-                        }
-                        div("form-group row") {
-                            label("col-form-label col-4") {
-                                +"Opacity: "
-                            }
-                            input(InputType.range, classes = "form-control col-8") {
-                                min = "0.0"
-                                max = "1.0"
-                                step = "0.1"
-                                value = item.opacity.toString()
-                            }.apply {
-                                onInputFunction = {
-                                    item.opacity = value.toDouble()
-                                }
-                            }
-                        }
-                        div("form-group row") {
-                            label("col-form-label col-4") { +"Visible: " }
-                            div("col-8") {
-                                div("form-check") {
-                                    input(InputType.checkBox, classes = "form-check-input").apply {
-                                        this.checked = item.visible ?: true
-                                        onInputFunction = {
-                                            item.visible = checked
-                                        }
-                                    }
-                                }
-                            }
-
-                        }
-                    }
-                }
-            }
-            (item.properties ?: item.prototype?.properties)?.let { config ->
-                div("card") {
-                    div("card-body") {
-                        h3(classes = "card-title") { +"Properties" }
-                    }.apply {
-                        val metaToEdit = config.builder().apply {
-                            VISIBLE_KEY to (item.visible ?: true)
-                            COLOR_KEY to (item.color ?: "#ffffff")
-                            OPACITY_KEY to (item.opacity ?: 1.0)
-                        }
-                        //FIXME something rotten in JS-Meta converter
-                        val jsObject: dynamic = JSON.parse(metaToEdit.toJson().toString())
-                        //jsObject.material.color != null
-                        val options = (js("{}") as JSONEditorOptions).apply {
-                            mode = "form"
-                            onChangeJSON = { item.config.update(DynamicMeta(it.asDynamic())) }
-                        }
-                        JSONEditor(this, options, jsObject)
-                    }
-                }
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/info/laht/threekt/objects/LineSegments.kt b/dataforge-vis-spatial/src/jsMain/kotlin/info/laht/threekt/objects/LineSegments.kt
index e682cdc7..3925c7fb 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/info/laht/threekt/objects/LineSegments.kt
+++ b/dataforge-vis-spatial/src/jsMain/kotlin/info/laht/threekt/objects/LineSegments.kt
@@ -28,7 +28,10 @@
 package info.laht.threekt.objects
 
 import info.laht.threekt.core.BufferGeometry
+import info.laht.threekt.core.Geometry
 import info.laht.threekt.core.Object3D
 import info.laht.threekt.materials.Material
 
-open external class LineSegments(geometry: BufferGeometry, material: Material) : Object3D
\ No newline at end of file
+open external class LineSegments(geometry: BufferGeometry, material: Material) : Object3D {
+    constructor(geometry: Geometry, material: Material)
+}
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index b0acbdcd..7c4388a9 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index 8e25e6c1..83f2acfd 100644
--- a/gradlew
+++ b/gradlew
@@ -125,8 +125,8 @@ if $darwin; then
     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
 fi
 
-# For Cygwin, switch paths to Windows format before running java
-if $cygwin ; then
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
     JAVACMD=`cygpath --unix "$JAVACMD"`
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 1c7412a3..b49736d1 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -5,6 +5,7 @@ pluginManagement {
         gradlePluginPortal()
         maven("https://kotlin.bintray.com/kotlinx")
         maven("https://dl.bintray.com/kotlin/kotlin-eap")
+        maven("https://dl.bintray.com/mipt-npm/dataforge")
         maven("https://dl.bintray.com/mipt-npm/scientifik")
         maven("https://dl.bintray.com/mipt-npm/dev")
     }
@@ -17,7 +18,6 @@ pluginManagement {
                 "org.jetbrains.kotlin.jvm" -> useModule("org.jetbrains.kotlin:kotlin-gradle-plugin:${requested.version}")
                 "org.jetbrains.kotlin.js" -> useModule("org.jetbrains.kotlin:kotlin-gradle-plugin:${requested.version}")
                 "kotlin-dce-js" -> useModule("org.jetbrains.kotlin:kotlin-gradle-plugin:${requested.version}")
-                "kotlin2js" -> useModule("org.jetbrains.kotlin:kotlin-gradle-plugin:${requested.version}")
                 "org.jetbrains.kotlin.frontend" -> useModule("org.jetbrains.kotlin:kotlin-frontend-plugin:${requested.version}")
                 "scientifik.mpp", "scientifik.publish", "scientifik.jvm", "scientifik.js" -> useModule("scientifik:gradle-tools:${requested.version}")
                 "org.openjfx.javafxplugin" -> useModule("org.openjfx:javafx-plugin:${requested.version}")
@@ -32,6 +32,7 @@ rootProject.name = "dataforge-vis"
 
 include(
     ":dataforge-vis-common",
+    ":wrappers",
     ":dataforge-vis-fx",
     ":dataforge-vis-spatial",
     ":dataforge-vis-spatial-gdml",
diff --git a/spatial-js-demo/src/main/kotlin/hep/dataforge/vis/spatial/demo/ThreeDemoApp.kt b/spatial-js-demo/src/main/kotlin/hep/dataforge/vis/spatial/demo/ThreeDemoApp.kt
index 496ec8fe..a35bf4c9 100644
--- a/spatial-js-demo/src/main/kotlin/hep/dataforge/vis/spatial/demo/ThreeDemoApp.kt
+++ b/spatial-js-demo/src/main/kotlin/hep/dataforge/vis/spatial/demo/ThreeDemoApp.kt
@@ -1,10 +1,10 @@
 package hep.dataforge.vis.spatial.demo
 
 import hep.dataforge.context.ContextBuilder
+import hep.dataforge.vis.ApplicationBase
 import hep.dataforge.vis.common.Colors
-import hep.dataforge.vis.hmr.ApplicationBase
-import hep.dataforge.vis.hmr.startApplication
 import hep.dataforge.vis.spatial.*
+import hep.dataforge.vis.startApplication
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.isActive
@@ -130,6 +130,21 @@ private class ThreeDemoApp : ApplicationBase() {
                     }
                 }
             }
+            demo("lines", "Track / line segments") {
+                sphere(100) {
+                    color(Colors.blue)
+                    detail = 50
+                    opacity = 0.4
+                }
+                repeat(20) {
+                    polyline(Point3D(100, 100, 100), Point3D(-100, -100, -100)) {
+                        thickness = 208.0
+                        rotationX = it * PI2 / 20
+                        color(Colors.green)
+                             //rotationY = it * PI2 / 20
+                    }
+                }
+            }
         }
 
 
diff --git a/wrappers/build.gradle.kts b/wrappers/build.gradle.kts
new file mode 100644
index 00000000..177713d0
--- /dev/null
+++ b/wrappers/build.gradle.kts
@@ -0,0 +1,23 @@
+plugins {
+    id("scientifik.js")
+    //id("kotlin-dce-js")
+}
+
+dependencies {
+    api(project(":dataforge-vis-common"))
+
+    testCompile(kotlin("test-js"))
+}
+
+kotlin{
+    sourceSets["main"].apply{
+        dependencies{
+            api(npm("style-loader"))
+            api(npm("inspire-tree","6.0.1"))
+            api(npm("inspire-tree-dom","4.0.6"))
+            api(npm("jsoneditor"))
+            api(npm("dat.gui"))
+            //api("org.jetbrains:kotlin-extensions:1.0.1-pre.83-kotlin-1.3.50")
+        }
+    }
+}
diff --git a/wrappers/src/main/kotlin/dat.kt b/wrappers/src/main/kotlin/dat.kt
new file mode 100644
index 00000000..7c56c20a
--- /dev/null
+++ b/wrappers/src/main/kotlin/dat.kt
@@ -0,0 +1,102 @@
+@file:Suppress(
+    "INTERFACE_WITH_SUPERCLASS",
+    "OVERRIDING_FINAL_MEMBER",
+    "RETURN_TYPE_MISMATCH_ON_OVERRIDE",
+    "CONFLICTING_OVERLOADS",
+    "EXTERNAL_DELEGATION"
+)
+@file:JsModule("dat.gui")
+@file:JsNonModule
+
+package hep.dataforge.vis.spatial.editor
+
+import org.w3c.dom.HTMLElement
+
+external interface GUIParams {
+    var autoPlace: Boolean? get() = definedExternally; set(value) = definedExternally
+    var closed: Boolean? get() = definedExternally; set(value) = definedExternally
+    var closeOnTop: Boolean? get() = definedExternally; set(value) = definedExternally
+    var hideable: Boolean? get() = definedExternally; set(value) = definedExternally
+    var load: Any? get() = definedExternally; set(value) = definedExternally
+    var name: String? get() = definedExternally; set(value) = definedExternally
+    var preset: String? get() = definedExternally; set(value) = definedExternally
+    var width: Number? get() = definedExternally; set(value) = definedExternally
+}
+
+external open class GUI(option: GUIParams? = definedExternally /* null */) {
+    open var __controllers: Array<GUIController>
+    open var __folders: Array<GUI>
+    open var domElement: HTMLElement
+    open fun add(
+        target: Any,
+        propName: String,
+        min: Number? = definedExternally /* null */,
+        max: Number? = definedExternally /* null */,
+        step: Number? = definedExternally /* null */
+    ): GUIController
+
+    open fun add(target: Any, propName: String, status: Boolean): GUIController
+    open fun add(target: Any, propName: String, items: Array<String>): GUIController
+    open fun add(target: Any, propName: String, items: Array<Number>): GUIController
+    open fun add(target: Any, propName: String, items: Any): GUIController
+    open fun addColor(target: Any, propName: String): GUIController
+    open fun remove(controller: GUIController)
+    open fun destroy()
+    open fun addFolder(propName: String): GUI
+    open fun removeFolder(subFolder: GUI)
+    open fun open()
+    open fun close()
+    open fun hide()
+    open fun show()
+    open fun remember(target: Any, vararg additionalTargets: Any)
+    open fun getRoot(): GUI
+    open fun getSaveObject(): Any
+    open fun save()
+    open fun saveAs(presetName: String)
+    open fun revert(gui: GUI)
+    open fun listen(controller: GUIController)
+    open fun updateDisplay()
+    open var parent: GUI
+    open var scrollable: Boolean
+    open var autoPlace: Boolean
+    open var preset: String
+    open var width: Number
+    open var name: String
+    open var closed: Boolean
+    open var load: Any
+    open var useLocalStorage: Boolean
+
+    companion object {
+        var CLASS_AUTO_PLACE: String
+        var CLASS_AUTO_PLACE_CONTAINER: String
+        var CLASS_MAIN: String
+        var CLASS_CONTROLLER_ROW: String
+        var CLASS_TOO_TALL: String
+        var CLASS_CLOSED: String
+        var CLASS_CLOSE_BUTTON: String
+        var CLASS_CLOSE_TOP: String
+        var CLASS_CLOSE_BOTTOM: String
+        var CLASS_DRAG: String
+        var DEFAULT_WIDTH: Number
+        var TEXT_CLOSED: String
+        var TEXT_OPEN: String
+    }
+}
+
+external open class GUIController {
+    open fun destroy()
+    open var onChange: (value: Any? /* = null */) -> GUIController
+    open var onFinishChange: (value: Any? /* = null */) -> GUIController
+    open fun setValue(value: Any): GUIController
+    open fun getValue(): Any
+    open fun updateDisplay(): GUIController
+    open fun isModified(): Boolean
+    open fun min(n: Number): GUIController
+    open fun max(n: Number): GUIController
+    open fun step(n: Number): GUIController
+    open fun fire(): GUIController
+    open fun options(option: Any): GUIController
+    open fun name(s: String): GUIController
+    open fun listen(): GUIController
+    open fun remove(): GUIController
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/eventemitter2.kt b/wrappers/src/main/kotlin/eventemitter2.kt
similarity index 98%
rename from dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/eventemitter2.kt
rename to wrappers/src/main/kotlin/eventemitter2.kt
index 2d6e2e50..36b925f2 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/eventemitter2.kt
+++ b/wrappers/src/main/kotlin/eventemitter2.kt
@@ -8,7 +8,7 @@
 @file:JsModule("eventemitter2")
 @file: JsNonModule
 
-package hep.dataforge.vis.spatial.tree
+package hep.dataforge.vis.spatial.editor
 
 import kotlin.js.Promise
 
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/inspire-tree-dom.kt b/wrappers/src/main/kotlin/inspire-tree-dom.kt
similarity index 92%
rename from dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/inspire-tree-dom.kt
rename to wrappers/src/main/kotlin/inspire-tree-dom.kt
index 2e595adf..f3e00d08 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/inspire-tree-dom.kt
+++ b/wrappers/src/main/kotlin/inspire-tree-dom.kt
@@ -6,7 +6,7 @@
     "EXTERNAL_DELEGATION"
 )
 
-package hep.dataforge.vis.spatial.tree
+package hep.dataforge.vis.spatial.editor
 
 import org.w3c.dom.HTMLElement
 
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/inspire-tree.kt b/wrappers/src/main/kotlin/inspire-tree.kt
similarity index 99%
rename from dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/inspire-tree.kt
rename to wrappers/src/main/kotlin/inspire-tree.kt
index c19df4de..74887be7 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/inspire-tree.kt
+++ b/wrappers/src/main/kotlin/inspire-tree.kt
@@ -7,7 +7,7 @@
     "unused"
 )
 
-package hep.dataforge.vis.spatial.tree
+package hep.dataforge.vis.spatial.editor
 
 import kotlin.js.Promise
 import kotlin.js.RegExp
diff --git a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/jsonEditor.kt b/wrappers/src/main/kotlin/jsoneditor.kt
similarity index 99%
rename from dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/jsonEditor.kt
rename to wrappers/src/main/kotlin/jsoneditor.kt
index 1e3abd3c..a83f4b87 100644
--- a/dataforge-vis-spatial/src/jsMain/kotlin/hep/dataforge/vis/spatial/tree/jsonEditor.kt
+++ b/wrappers/src/main/kotlin/jsoneditor.kt
@@ -6,7 +6,7 @@
     "EXTERNAL_DELEGATION"
 )
 
-package hep.dataforge.vis.spatial.tree
+package hep.dataforge.vis.spatial.editor
 
 import org.w3c.dom.HTMLElement