diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/Colors.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/Colors.kt
index 340caa59..bfb51fd4 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/Colors.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/Colors.kt
@@ -4,6 +4,7 @@ import hep.dataforge.meta.Meta
 import hep.dataforge.meta.MetaBuilder
 import hep.dataforge.meta.buildMeta
 import hep.dataforge.meta.set
+import hep.dataforge.names.toName
 
 /**
  * Taken from https://github.com/markaren/three.kt/blob/master/threejs-wrapper/src/main/kotlin/info/laht/threekt/math/ColorConstants.kt
@@ -181,13 +182,14 @@ object Colors {
     const val yellowgreen = 0x9ACD32
 }
 
+private val material = "material".toName()
 
 fun VisualObject.color(rgb: Int) {
-    this.properties["material"] = rgb
+    this.config[material] = rgb
 }
 
 fun VisualObject.color(meta: Meta) {
-    this.properties["material"] = meta
+    this.config[material] = meta
 }
 
 fun VisualObject.color(builder: MetaBuilder.() -> Unit) {
diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualGroup.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualGroup.kt
index e5cb4b47..66fdaec3 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualGroup.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualGroup.kt
@@ -1,29 +1,41 @@
 package hep.dataforge.vis.common
 
-import hep.dataforge.meta.EmptyMeta
+import hep.dataforge.meta.Config
+import hep.dataforge.meta.Laminate
 import hep.dataforge.meta.Meta
-import hep.dataforge.meta.Styled
 import hep.dataforge.names.Name
-import hep.dataforge.names.toName
 import hep.dataforge.provider.Provider
+import kotlin.collections.ArrayList
+import kotlin.collections.HashMap
+import kotlin.collections.HashSet
+import kotlin.collections.Iterable
+import kotlin.collections.Iterator
+import kotlin.collections.Map
+import kotlin.collections.emptyMap
+import kotlin.collections.forEach
+import kotlin.collections.plus
+import kotlin.collections.removeAll
+import kotlin.collections.set
 
 /**
  * A display group which allows both named and unnamed children
  */
 class VisualGroup(
-    override val parent: VisualObject? = null, meta: Meta = EmptyMeta
+    override val parent: VisualObject? = null, tagRefs: Array<out Meta> = emptyArray()
 ) : VisualObject, Iterable<VisualObject>, Provider {
 
     private val namedChildren = HashMap<Name, VisualObject>()
     private val unnamedChildren = ArrayList<VisualObject>()
 
     override val defaultTarget: String get() = VisualObject.TYPE
-    override val properties: Styled = Styled(meta)
+    override val config = Config()
+
+    override val properties: Laminate by lazy { combineProperties(parent, config, tagRefs) }
 
     override fun iterator(): Iterator<VisualObject> = (namedChildren.values + unnamedChildren).iterator()
 
     override fun provideTop(target: String): Map<Name, Any> {
-        return when(target){
+        return when (target) {
             VisualObject.TYPE -> namedChildren
             else -> emptyMap()
         }
@@ -49,22 +61,26 @@ class VisualGroup(
     }
 
     /**
-     *
+     * Add named or unnamed child to the group. If key is [null] the child is considered unnamed. Both key and value are not
+     * allowed to be null in the same time. If name is present and [child] is null, the appropriate element is removed.
      */
-    operator fun set(key: String?, child: VisualObject?) {
-        if(key == null){
-
-        } else {
-            val name = key.toName()
-            if (child == null) {
-                namedChildren.remove(name)
-            } else {
-                namedChildren[name] = child
+    operator fun set(name: Name?, child: VisualObject?) {
+        when {
+            name != null -> {
+                if (child == null) {
+                    namedChildren.remove(name)
+                } else {
+                    namedChildren[name] = child
+                }
+                listeners.forEach { it.callback(name, child) }
             }
-            listeners.forEach { it.callback(name, child) }
+            child != null -> unnamedChildren.add(child)
+            else -> error("Both key and child element are empty")
         }
     }
 
+    operator fun set(key: String?, child: VisualObject?) = set(key?.asName(), child)
+
     /**
      * Append unnamed child
      */
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 40e877ba..0802b20f 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
@@ -2,24 +2,34 @@ package hep.dataforge.vis.common
 
 import hep.dataforge.meta.*
 import hep.dataforge.names.Name
-import hep.dataforge.names.toName
 import hep.dataforge.provider.Type
 import hep.dataforge.vis.common.VisualObject.Companion.META_KEY
 import hep.dataforge.vis.common.VisualObject.Companion.TAGS_KEY
 import hep.dataforge.vis.common.VisualObject.Companion.TYPE
 
+private fun Laminate.withTop(meta: Meta): Laminate = Laminate(listOf(meta) + layers)
+private fun Laminate.withBottom(meta: Meta): Laminate = Laminate(layers + meta)
+
 /**
  * A root type for display hierarchy
  */
 @Type(TYPE)
-interface VisualObject : MetaRepr {
+interface VisualObject : MetaRepr, Configurable {
 
     /**
      * The parent object of this one. If null, this one is a root.
      */
     val parent: VisualObject?
 
-    val properties: Styled
+    /**
+     * Individual properties configurator
+     */
+    override val config: Config
+
+    /**
+     * All properties including inherited ones
+     */
+    val properties: Laminate
 
     override fun toMeta(): Meta = buildMeta {
         "type" to this::class
@@ -37,18 +47,11 @@ interface VisualObject : MetaRepr {
     }
 }
 
-/**
- * Get the property of this display object of parent's if not found
- */
-tailrec fun VisualObject.getProperty(name: Name): MetaItem<*>? = properties[name] ?: parent?.getProperty(name)
-
-fun VisualObject.getProperty(name: String): MetaItem<*>? = getProperty(name.toName())
-
 /**
  * A change listener for [VisualObject] configuration.
  */
 fun VisualObject.onChange(owner: Any?, action: (Name, before: MetaItem<*>?, after: MetaItem<*>?) -> Unit) {
-    properties.onChange(owner, action)
+    config.onChange(owner, action)
     parent?.onChange(owner, action)
 }
 
@@ -56,7 +59,7 @@ fun VisualObject.onChange(owner: Any?, action: (Name, before: MetaItem<*>?, afte
  * Remove all meta listeners with matching owners
  */
 fun VisualObject.removeChangeListener(owner: Any?) {
-    properties.removeListener(owner)
+    config.removeListener(owner)
     parent?.removeChangeListener(owner)
 }
 
@@ -64,18 +67,28 @@ fun VisualObject.removeChangeListener(owner: Any?) {
 /**
  * Additional meta not relevant to display
  */
-val VisualObject.meta: Meta get() = properties[META_KEY]?.node ?: EmptyMeta
+val VisualObject.meta: Meta get() = config[META_KEY]?.node ?: EmptyMeta
 
-val VisualObject.tags: List<String> get() = properties[TAGS_KEY].stringList
+val VisualObject.tags: List<String> get() = config[TAGS_KEY].stringList
 
 /**
  * Basic [VisualObject] leaf element
  */
-open class DisplayLeaf(
-    override val parent: VisualObject?,
-    meta: Meta = EmptyMeta
+open class VisualLeaf(
+    final override val parent: VisualObject?,
+    tagRefs: Array<out Meta>
 ) : VisualObject {
-    final override val properties = Styled(meta)
+    final override val config = Config()
+
+    override val properties: Laminate by lazy { combineProperties(parent, config, tagRefs) }
+}
+
+internal fun combineProperties(parent: VisualObject?, config: Config, tagRefs: Array<out Meta>): Laminate {
+    val list = ArrayList<Meta>(tagRefs.size + 2)
+    list += config
+    list.addAll(tagRefs)
+    parent?.properties?.let { list.add(it) }
+    return Laminate(list)
 }
 
 ///**
diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObjectDelegates.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObjectDelegates.kt
index e3c42de4..b951e587 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObjectDelegates.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/common/VisualObjectDelegates.kt
@@ -2,13 +2,16 @@ package hep.dataforge.vis.common
 
 import hep.dataforge.meta.*
 import hep.dataforge.names.Name
-import hep.dataforge.names.toName
+import hep.dataforge.names.NameToken
+import hep.dataforge.names.asName
 import hep.dataforge.values.Value
 import kotlin.jvm.JvmName
 import kotlin.properties.ReadOnlyProperty
 import kotlin.properties.ReadWriteProperty
 import kotlin.reflect.KProperty
 
+fun String.asName() = NameToken(this).asName()
+
 /**
  * A delegate for display object properties
  */
@@ -18,17 +21,17 @@ class DisplayObjectDelegate(
     val inherited: Boolean
 ) : ReadWriteProperty<VisualObject, MetaItem<*>?> {
     override fun getValue(thisRef: VisualObject, property: KProperty<*>): MetaItem<*>? {
-        val name = key ?: property.name.toName()
+        val name = key ?: property.name.asName()
         return if (inherited) {
-            thisRef.getProperty(name)
-        } else {
             thisRef.properties[name]
+        } else {
+            thisRef.config[name]
         } ?: default
     }
 
     override fun setValue(thisRef: VisualObject, property: KProperty<*>, value: MetaItem<*>?) {
-        val name = key ?: property.name.toName()
-        thisRef.properties[name] = value
+        val name = key ?: property.name.asName()
+        thisRef.config[name] = value
     }
 }
 
@@ -43,70 +46,71 @@ class DisplayObjectDelegateWrapper<T>(
     //private var cachedName: Name? = null
 
     override fun getValue(thisRef: VisualObject, property: KProperty<*>): T {
-        val name = key ?: property.name.toName()
+        val name = key ?: property.name.asName()
         return if (inherited) {
-            read(thisRef.getProperty(name))
-        } else {
             read(thisRef.properties[name])
+        } else {
+            read(thisRef.config[name])
         } ?: default
     }
 
     override fun setValue(thisRef: VisualObject, property: KProperty<*>, value: T) {
-        val name = key ?: property.name.toName()
-        thisRef.properties[name] = value
+        val name = key ?: property.name.asName()
+        thisRef.config[name] = value
     }
 }
 
 
 fun VisualObject.value(default: Value? = null, key: String? = null, inherited: Boolean = false) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { it.value }
+    DisplayObjectDelegateWrapper(key?.asName(), default, inherited) { it.value }
 
 fun VisualObject.string(default: String? = null, key: String? = null, inherited: Boolean = false) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { it.string }
+    DisplayObjectDelegateWrapper(key?.asName(), default, inherited) { it.string }
 
 fun VisualObject.boolean(default: Boolean? = null, key: String? = null, inherited: Boolean = false) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { it.boolean }
+    DisplayObjectDelegateWrapper(key?.asName(), default, inherited) { it.boolean }
 
 fun VisualObject.number(default: Number? = null, key: String? = null, inherited: Boolean = false) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { it.number }
+    DisplayObjectDelegateWrapper(key?.asName(), default, inherited) { it.number }
 
 fun VisualObject.double(default: Double? = null, key: String? = null, inherited: Boolean = false) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { it.double }
+    DisplayObjectDelegateWrapper(key?.asName(), default, inherited) { it.double }
 
 fun VisualObject.int(default: Int? = null, key: String? = null, inherited: Boolean = false) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { it.int }
+    DisplayObjectDelegateWrapper(key?.asName(), default, inherited) { it.int }
 
 
 fun VisualObject.node(key: String? = null, inherited: Boolean = true) =
-    DisplayObjectDelegateWrapper(key?.toName(), null, inherited) { it.node }
+    DisplayObjectDelegateWrapper(key?.asName(), null, inherited) { it.node }
 
 fun VisualObject.item(key: String? = null, inherited: Boolean = true) =
-    DisplayObjectDelegateWrapper(key?.toName(), null, inherited) { it }
+    DisplayObjectDelegateWrapper(key?.asName(), 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) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { it.string }
+    DisplayObjectDelegateWrapper(key?.asName(), default, inherited) { it.string }
 
 @JvmName("safeBoolean")
 fun VisualObject.boolean(default: Boolean, key: String? = null, inherited: Boolean = false) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { it.boolean }
+    DisplayObjectDelegateWrapper(key?.asName(), default, inherited) { it.boolean }
 
 @JvmName("safeNumber")
 fun VisualObject.number(default: Number, key: String? = null, inherited: Boolean = false) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { it.number }
+    DisplayObjectDelegateWrapper(key?.asName(), default, inherited) { it.number }
 
 @JvmName("safeDouble")
 fun VisualObject.double(default: Double, key: String? = null, inherited: Boolean = false) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { it.double }
+    DisplayObjectDelegateWrapper(key?.asName(), default, inherited) { it.double }
 
 @JvmName("safeInt")
 fun VisualObject.int(default: Int, key: String? = null, inherited: Boolean = false) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { it.int }
+    DisplayObjectDelegateWrapper(key?.asName(), default, inherited) { it.int }
+
 
 inline fun <reified E : Enum<E>> VisualObject.enum(default: E, key: String? = null, inherited: Boolean = false) =
-    DisplayObjectDelegateWrapper(key?.toName(), default, inherited) { item -> item.string?.let { enumValueOf<E>(it) } }
+    DisplayObjectDelegateWrapper(key?.let{ NameToken(it).asName()}, default, inherited) { item -> item.string?.let { enumValueOf<E>(it) } }
 
 //merge properties
 
@@ -116,11 +120,11 @@ fun <T> VisualObject.merge(
 ): ReadOnlyProperty<VisualObject, T> {
     return object : ReadOnlyProperty<VisualObject, T> {
         override fun getValue(thisRef: VisualObject, property: KProperty<*>): T {
-            val name = key?.toName() ?: property.name.toName()
+            val name = key?.asName() ?: property.name.asName()
             val sequence = sequence<MetaItem<*>> {
                 var thisObj: VisualObject? = thisRef
                 while (thisObj != null) {
-                    thisObj.properties[name]?.let { yield(it) }
+                    thisObj.config[name]?.let { yield(it) }
                     thisObj = thisObj.parent
                 }
             }
diff --git a/dataforge-vis-spatial-fx/src/main/kotlin/hep/dataforge/vis/spatial/DisplayObjectFXListener.kt b/dataforge-vis-spatial-fx/src/main/kotlin/hep/dataforge/vis/spatial/DisplayObjectFXListener.kt
index 1fe12696..62bcaffd 100644
--- a/dataforge-vis-spatial-fx/src/main/kotlin/hep/dataforge/vis/spatial/DisplayObjectFXListener.kt
+++ b/dataforge-vis-spatial-fx/src/main/kotlin/hep/dataforge/vis/spatial/DisplayObjectFXListener.kt
@@ -4,7 +4,6 @@ import hep.dataforge.meta.*
 import hep.dataforge.names.Name
 import hep.dataforge.names.toName
 import hep.dataforge.vis.common.VisualObject
-import hep.dataforge.vis.common.getProperty
 import hep.dataforge.vis.common.onChange
 import javafx.beans.binding.ObjectBinding
 import tornadofx.*
@@ -24,7 +23,7 @@ class DisplayObjectFXListener(val obj: VisualObject) {
     operator fun get(key: Name): ObjectBinding<MetaItem<*>?> {
         return binndings.getOrPut(key) {
             object : ObjectBinding<MetaItem<*>?>() {
-                override fun computeValue(): MetaItem<*>? = obj.getProperty(key)
+                override fun computeValue(): MetaItem<*>? = obj.properties[key]
             }
         }
     }
diff --git a/dataforge-vis-spatial-fx/src/main/kotlin/hep/dataforge/vis/spatial/RendererDemoApp.kt b/dataforge-vis-spatial-fx/src/main/kotlin/hep/dataforge/vis/spatial/RendererDemoApp.kt
index e0778632..1e165cb8 100644
--- a/dataforge-vis-spatial-fx/src/main/kotlin/hep/dataforge/vis/spatial/RendererDemoApp.kt
+++ b/dataforge-vis-spatial-fx/src/main/kotlin/hep/dataforge/vis/spatial/RendererDemoApp.kt
@@ -27,21 +27,14 @@ class RendererDemoView : View() {
 
         renderer.render {
             group = group {
-                box {
-                    xSize = 100.0
-                    ySize = 100.0
-                    zSize = 100.0
-                }
-                box {
+                box(100,100,100)
+                box(100,100,100) {
                     x = 110.0
-                    xSize = 100.0
-                    ySize = 100.0
-                    zSize = 100.0
                 }
             }
         }
 
-        var color by group.properties.number(1530).int
+        var color by group.config.number(1530).int
 
         GlobalScope.launch {
             val random = Random(111)
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 43ac52b6..2951dbff 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
@@ -11,28 +11,57 @@ import kotlin.math.cos
 import kotlin.math.sin
 
 
-private fun VisualObject.applyPosition(pos: GDMLPosition): VisualObject = apply {
-    x = pos.x
-    y = pos.y
-    z = pos.z
-    //TODO convert units if needed
-}
+private fun VisualObject.withPosition(
+    pos: GDMLPosition? = null,
+    rotation: GDMLRotation? = null,
+    scale: GDMLScale? = null
+): VisualObject =
+    apply {
+        //        if( this is VisualObject3D){
+//            pos?.let {
+//                x = pos.x
+//                y = pos.y
+//                z = pos.z
+//            }
+//            rotation?.let {
+//                rotationX = rotation.x
+//                rotationY = rotation.y
+//                rotationZ = rotation.z
+//            }
+//        } else {
+        pos?.let {
+            x = pos.x
+            y = pos.y
+            z = pos.z
+        }
+        rotation?.let {
+            rotationX = rotation.x
+            rotationY = rotation.y
+            rotationZ = rotation.z
+        }
+        //}
+        scale?.let {
+            scaleX = scale.x
+            scaleY = scale.y
+            scaleZ = scale.z
+        }
+        //TODO convert units if needed
+    }
 
-private fun VisualObject.applyRotation(rotation: GDMLRotation): VisualObject = apply {
-    rotationX = rotation.x
-    rotationY = rotation.y
-    rotationZ = rotation.z
-    //TODO convert units if needed
-}
 
-private fun VisualGroup.addSolid(root: GDML, solid: GDMLSolid, block: VisualObject.() -> Unit = {}): VisualObject {
+private fun VisualGroup.addSolid(
+    root: GDML,
+    solid: GDMLSolid,
+    name: String? = null,
+    block: VisualObject.() -> Unit = {}
+): VisualObject {
     return when (solid) {
-        is GDMLBox -> box(solid.x, solid.y, solid.z)
-        is GDMLTube -> cylinder(solid.rmax, solid.z) {
+        is GDMLBox -> box(solid.x, solid.y, solid.z, name)
+        is GDMLTube -> cylinder(solid.rmax, solid.z, name) {
             startAngle = solid.startphi
             angle = solid.deltaphi
         }
-        is GDMLXtru -> extrude {
+        is GDMLXtru -> extrude(name) {
             shape {
                 solid.vertices.forEach {
                     point(it.x, it.y)
@@ -46,6 +75,7 @@ private fun VisualGroup.addSolid(root: GDML, solid: GDMLSolid, block: VisualObje
             //Add solid with modified scale
             val innerSolid = solid.solidref.resolve(root)
                 ?: error("Solid with tag ${solid.solidref.ref} for scaled solid ${solid.name} not defined")
+
             addSolid(root, innerSolid) {
                 block()
                 scaleX = scaleX.toDouble() * solid.scale.x.toDouble()
@@ -53,12 +83,12 @@ private fun VisualGroup.addSolid(root: GDML, solid: GDMLSolid, block: VisualObje
                 scaleZ = scaleZ.toDouble() * solid.scale.z.toDouble()
             }
         }
-        is GDMLSphere -> sphere(solid.rmax, solid.deltaphi, solid.deltatheta) {
+        is GDMLSphere -> sphere(solid.rmax, solid.deltaphi, solid.deltatheta, name) {
             phiStart = solid.startphi.toDouble()
             thetaStart = solid.starttheta.toDouble()
         }
-        is GDMLOrb -> sphere(solid.r)
-        is GDMLPolyhedra -> extrude {
+        is GDMLOrb -> sphere(solid.r, name = name)
+        is GDMLPolyhedra -> extrude(name) {
             //getting the radius of first
             require(solid.planes.size > 1) { "The polyhedron geometry requires at least two planes" }
             val baseRadius = solid.planes.first().rmax.toDouble()
@@ -81,14 +111,13 @@ private fun VisualGroup.addSolid(root: GDML, solid: GDMLSolid, block: VisualObje
                 is GDMLSubtraction -> CompositeType.SUBTRACT
                 is GDMLIntersection -> CompositeType.INTERSECT
             }
-            return composite(type) {
+
+            return composite(type, name) {
                 addSolid(root, first) {
-                    solid.resolveFirstPosition(root)?.let { applyPosition(it) }
-                    solid.resolveFirstRotation(root)?.let { applyRotation(it) }
+                    withPosition(solid.resolveFirstPosition(root), solid.resolveFirstRotation(root), null)
                 }
                 addSolid(root, second)
-                solid.resolvePosition(root)?.let { applyPosition(it) }
-                solid.resolveRotation(root)?.let { applyRotation(it) }
+                withPosition(solid.resolvePosition(root), solid.resolveRotation(root), null)
             }
         }
     }.apply(block)
@@ -97,30 +126,42 @@ private fun VisualGroup.addSolid(root: GDML, solid: GDMLSolid, block: VisualObje
 private fun VisualGroup.addVolume(
     root: GDML,
     group: GDMLGroup,
+    position: GDMLPosition? = null,
+    rotation: GDMLRotation? = null,
+    scale: GDMLScale? = null,
     resolveColor: GDMLMaterial.() -> Meta
-): VisualGroup {
-    if (group is GDMLVolume) {
-        val solid = group.solidref.resolve(root)
-            ?: error("Solid with tag ${group.solidref.ref} for volume ${group.name} not defined")
-        val material = group.materialref.resolve(root)
-            ?: error("Material with tag ${group.materialref.ref} for volume ${group.name} not defined")
+) {
 
-        addSolid(root, solid) {
-            color(material.resolveColor())
+    group(group.name) {
+        withPosition(position, rotation, scale)
+
+        if (group is GDMLVolume) {
+            val solid = group.solidref.resolve(root)
+                ?: error("Solid with tag ${group.solidref.ref} for volume ${group.name} not defined")
+            val material = group.materialref.resolve(root)
+                ?: error("Material with tag ${group.materialref.ref} for volume ${group.name} not defined")
+
+            addSolid(root, solid, solid.name) {
+                color(material.resolveColor())
+            }
+            //TODO render placements
         }
-        //TODO render placements
-    }
 
-    group.physVolumes.forEach {
-        val volume: GDMLGroup =
-            it.volumeref.resolve(root) ?: error("Volume with ref ${it.volumeref.ref} could not be resolved")
-        addVolume(root, volume, resolveColor).apply {
-            it.resolvePosition(root)?.let { pos -> applyPosition(pos) }
-            it.resolveRotation(root)?.let { rot -> applyRotation(rot) }
+        group.physVolumes.forEach { physVolume ->
+            val volume: GDMLGroup = physVolume.volumeref.resolve(root)
+                ?: error("Volume with ref ${physVolume.volumeref.ref} could not be resolved")
+
+            addVolume(
+                root,
+                volume,
+                physVolume.resolvePosition(root),
+                physVolume.resolveRotation(root),
+                physVolume.resolveScale(root),
+                resolveColor
+            )
         }
     }
 
-    return this
 }
 
 
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 328a28fb..1c13315b 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
@@ -17,7 +17,7 @@ import scientifik.gdml.GDML
 import kotlin.browser.document
 import kotlin.dom.clear
 
-class GDMLDemoApp : ApplicationBase() {
+private class GDMLDemoApp : ApplicationBase() {
 
 
     /**
@@ -56,13 +56,13 @@ class GDMLDemoApp : ApplicationBase() {
 
         val context = Global.context("demo") {}
         val three = context.plugins.load(ThreePlugin)
-        val canvas = document.getElementById("canvas") ?: error("Element with id canvas not found on page")
-        canvas.clear()
-        val output = three.output(canvas)
         //val url = URL("https://drive.google.com/open?id=1w5e7fILMN83JGgB8WANJUYm8OW2s0WVO")
 
+        val canvas = document.getElementById("canvas") ?: error("Element with id canvas not found on page")
 
         val action: suspend (String) -> Unit = {
+            canvas.clear()
+            val output = three.output(canvas)
             val gdml = GDML.format.parse(GDML.serializer(), it)
             val visual = gdml.toVisual()
             output.render(visual)
diff --git a/dataforge-vis-spatial-gdml/src/jvmTest/kotlin/hep/dataforge/vis/spatial/gdml/BMNTest.kt b/dataforge-vis-spatial-gdml/src/jvmTest/kotlin/hep/dataforge/vis/spatial/gdml/BMNTest.kt
index a04efbe5..b98993f5 100644
--- a/dataforge-vis-spatial-gdml/src/jvmTest/kotlin/hep/dataforge/vis/spatial/gdml/BMNTest.kt
+++ b/dataforge-vis-spatial-gdml/src/jvmTest/kotlin/hep/dataforge/vis/spatial/gdml/BMNTest.kt
@@ -13,7 +13,7 @@ class BMNTest {
 
         val url = URL("https://drive.google.com/open?id=1w5e7fILMN83JGgB8WANJUYm8OW2s0WVO")
         val file = File("D:\\Work\\Projects\\gdml.kt\\src\\commonTest\\resources\\gdml\\geofile_full.xml")
-        val stream = if(file.exists()){
+        val stream = if (file.exists()) {
             file.inputStream()
         } else {
             url.openStream()
@@ -21,7 +21,7 @@ class BMNTest {
 
         val xmlReader = StAXReader(stream, "UTF-8")
         val xml = GDML.format.parse(GDML.serializer(), xmlReader)
-        repeat(5) {
+        repeat(20) {
             xml.toVisual()
         }
     }
diff --git a/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/demo/ThreeDemoApp.kt b/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/demo/ThreeDemoApp.kt
index 3234ade9..41f833da 100644
--- a/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/demo/ThreeDemoApp.kt
+++ b/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/demo/ThreeDemoApp.kt
@@ -17,7 +17,7 @@ import kotlin.math.sin
 import kotlin.random.Random
 
 
-class ThreeDemoApp : ApplicationBase() {
+private class ThreeDemoApp : ApplicationBase() {
 
     override val stateKeys: List<String> = emptyList()
 
@@ -39,18 +39,12 @@ class ThreeDemoApp : ApplicationBase() {
 
             demo("dynamic", "Dynamic properties") {
                 val group = group {
-                    box {
+                    box(100, 100, 100) {
                         z = 110.0
-                        xSize = 100.0
-                        ySize = 100.0
-                        zSize = 100.0
                     }
-                    box {
+                    box(100, 100, 100) {
                         visible = false
                         x = 110.0
-                        xSize = 100.0
-                        ySize = 100.0
-                        zSize = 100.0
                         //override color for this cube
                         color(1530)
 
@@ -63,7 +57,7 @@ class ThreeDemoApp : ApplicationBase() {
                     }
                 }
 
-                var material by group.properties.number(1530).int
+                var material by group.config.number(1530).int
 
                 GlobalScope.launch {
                     val random = Random(111)
@@ -100,34 +94,28 @@ class ThreeDemoApp : ApplicationBase() {
             demo("CSG", "CSG operations") {
                 composite(CompositeType.UNION) {
                     box(100, 100, 100) {
-                        z = 100
-                        rotationX = PI / 4
-                        rotationY = PI / 4
+                        z = 50
                     }
-                    box(100, 100, 100)
+                    sphere(50)
                     color {
                         "color" to Colors.lightgreen
                         "opacity" to 0.3
                     }
                 }
                 composite(CompositeType.INTERSECT) {
-                    box(100, 100, 100) {
-                        z = 100
-                        rotationX = PI / 4
-                        rotationY = PI / 4
-                    }
-                    box(100, 100, 100)
                     y = 300
+                    box(100, 100, 100) {
+                        z = 50
+                    }
+                    sphere(50)
                     color(Colors.red)
                 }
                 composite(CompositeType.SUBTRACT) {
-                    box(100, 100, 100) {
-                        z = 100
-                        rotationX = PI / 4
-                        rotationY = PI / 4
-                    }
-                    box(100, 100, 100)
                     y = -300
+                    box(100, 100, 100) {
+                        z = 50
+                    }
+                    sphere(50)
                     color(Colors.blue)
                 }
             }
diff --git a/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreeCylinderFactory.kt b/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreeCylinderFactory.kt
index 756d2116..003c6a29 100644
--- a/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreeCylinderFactory.kt
+++ b/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreeCylinderFactory.kt
@@ -11,9 +11,9 @@ object ThreeCylinderFactory : MeshThreeFactory<Cylinder>(Cylinder::class) {
         return obj.detail?.let {
             val segments = it.toDouble().pow(0.5).toInt()
             CylinderBufferGeometry(
-                radiusTop = obj.upperRadius!!,
-                radiusBottom = obj.radius!!,
-                height = obj.height!!,
+                radiusTop = obj.upperRadius,
+                radiusBottom = obj.radius,
+                height = obj.height,
                 radialSegments = segments,
                 heightSegments = segments,
                 openEnded = false,
@@ -21,9 +21,9 @@ object ThreeCylinderFactory : MeshThreeFactory<Cylinder>(Cylinder::class) {
                 thetaLength = obj.angle
             )
         } ?: CylinderBufferGeometry(
-            radiusTop = obj.upperRadius!!,
-            radiusBottom = obj.radius!!,
-            height = obj.height!!,
+            radiusTop = obj.upperRadius,
+            radiusBottom = obj.radius,
+            height = obj.height,
             openEnded = false,
             thetaStart = obj.startAngle,
             thetaLength = obj.angle
diff --git a/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreeFactory.kt b/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreeFactory.kt
index 70bd4116..81d1031b 100644
--- a/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreeFactory.kt
+++ b/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreeFactory.kt
@@ -1,11 +1,10 @@
 package hep.dataforge.vis.spatial.three
 
 import hep.dataforge.meta.boolean
+import hep.dataforge.meta.get
 import hep.dataforge.names.startsWith
-import hep.dataforge.names.toName
 import hep.dataforge.provider.Type
 import hep.dataforge.vis.common.VisualObject
-import hep.dataforge.vis.common.getProperty
 import hep.dataforge.vis.common.onChange
 import hep.dataforge.vis.spatial.*
 import hep.dataforge.vis.spatial.three.ThreeFactory.Companion.TYPE
@@ -19,7 +18,7 @@ import info.laht.threekt.objects.LineSegments
 import info.laht.threekt.objects.Mesh
 import kotlin.reflect.KClass
 
-internal val VisualObject.material get() = getProperty("material").material()
+internal val VisualObject.material get() = properties["material"].material()
 
 /**
  * Builder and updater for three.js object
@@ -43,14 +42,14 @@ interface ThreeFactory<T : VisualObject> {
             val mesh = Mesh(geometry, obj.material)
 
             //inherited edges definition, enabled by default
-            if (obj.getProperty("edges.enabled").boolean != false) {
-                val material = obj.getProperty("edges.material")?.material() ?: Materials.DEFAULT
+            if (obj.properties["edges.enabled"].boolean != false) {
+                val material = obj.properties["edges.material"]?.material() ?: Materials.DEFAULT
                 mesh.add(LineSegments(EdgesGeometry(mesh.geometry as BufferGeometry), material))
             }
 
             //inherited wireframe definition, disabled by default
-            if (obj.getProperty("wireframe.enabled").boolean == true) {
-                val material = obj.getProperty("edges.material")?.material() ?: Materials.DEFAULT
+            if (obj.properties["wireframe.enabled"].boolean == true) {
+                val material = obj.properties["edges.material"]?.material() ?: Materials.DEFAULT
                 mesh.add(LineSegments(WireframeGeometry(mesh.geometry as BufferGeometry), material))
             }
 
@@ -63,9 +62,9 @@ interface ThreeFactory<T : VisualObject> {
                     //updated material
                     mesh.material = obj.material
                 } else if (
-                    name.startsWith("pos".toName()) ||
-                    name.startsWith("scale".toName()) ||
-                    name.startsWith("rotation".toName()) ||
+                    name.startsWith(PropertyNames3D.position) ||
+                    name.startsWith(PropertyNames3D.rotation) ||
+                    name.startsWith(PropertyNames3D.scale) ||
                     name.toString() == "visible"
                 ) {
                     //update position of mesh using this object
diff --git a/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt b/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt
index 5c46b5d9..3d9a5247 100644
--- a/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt
+++ b/dataforge-vis-spatial-js/src/main/kotlin/hep/dataforge/vis/spatial/three/ThreePlugin.kt
@@ -38,7 +38,14 @@ class ThreePlugin : AbstractPlugin() {
 
     fun buildObject3D(obj: VisualObject): Object3D {
         return when (obj) {
-            is VisualGroup -> Group(obj.map { buildObject3D(it) }).apply {
+            is VisualGroup -> Group(obj.mapNotNull {
+                try {
+                    buildObject3D(it)
+                } catch (ex: Throwable){
+                    logger.error(ex){"Failed to render $it"}
+                    null
+                }
+             }).apply {
                 updatePosition(obj)
             }
             is Composite -> compositeFactory(obj)
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Box.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Box.kt
index 7f75f5c3..a8200122 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Box.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Box.kt
@@ -1,23 +1,18 @@
 package hep.dataforge.vis.spatial
 
-import hep.dataforge.meta.EmptyMeta
 import hep.dataforge.meta.Meta
 import hep.dataforge.vis.common.VisualGroup
-import hep.dataforge.vis.common.DisplayLeaf
 import hep.dataforge.vis.common.VisualObject
-import hep.dataforge.vis.common.double
 
-class Box(parent: VisualObject?, meta: Meta) : DisplayLeaf(parent, meta), Shape {
-    var xSize by double(100.0)
-    var ySize by double(100.0)
-    var zSize by double(100.0)
+class Box(parent: VisualObject?, val xSize: Number, val ySize: Number, val zSize: Number, meta: Array<out Meta>) :
+    VisualObject3D(parent, meta), Shape {
 
     //TODO add helper for color configuration
 
     override fun <T : Any> toGeometry(geometryBuilder: GeometryBuilder<T>) {
-        val dx = xSize / 2
-        val dy = ySize / 2
-        val dz = zSize / 2
+        val dx = xSize.toDouble() / 2
+        val dy = ySize.toDouble() / 2
+        val dz = zSize.toDouble() / 2
         val node1 = Point3D(-dx, -dy, -dz)
         val node2 = Point3D(dx, -dy, -dz)
         val node3 = Point3D(dx, dy, -dz)
@@ -40,12 +35,15 @@ class Box(parent: VisualObject?, meta: Meta) : DisplayLeaf(parent, meta), Shape
     }
 }
 
-fun VisualGroup.box(meta: Meta = EmptyMeta, action: Box.() -> Unit = {}) =
-    Box(this, meta).apply(action).also { add(it) }
+//fun VisualGroup.box(meta: Meta = EmptyMeta, action: Box.() -> Unit = {}) =
+//    Box(this, meta).apply(action).also { add(it) }
 
-fun VisualGroup.box(xSize: Number, ySize: Number, zSize: Number, meta: Meta = EmptyMeta, action: Box.() -> Unit = {}) =
-    Box(this, meta).apply(action).apply{
-        this.xSize = xSize.toDouble()
-        this.ySize = ySize.toDouble()
-        this.zSize = zSize.toDouble()
-    }.also { add(it) }
\ No newline at end of file
+fun VisualGroup.box(
+    xSize: Number,
+    ySize: Number,
+    zSize: Number,
+    name: String? = null,
+    vararg meta: Meta,
+    action: Box.() -> Unit = {}
+) =
+    Box(this, xSize, ySize, zSize, meta).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/Composite.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Composite.kt
index ac987e1d..0123e1df 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Composite.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Composite.kt
@@ -1,9 +1,8 @@
 package hep.dataforge.vis.spatial
 
-import hep.dataforge.meta.EmptyMeta
 import hep.dataforge.meta.Meta
 import hep.dataforge.meta.seal
-import hep.dataforge.vis.common.DisplayLeaf
+import hep.dataforge.meta.update
 import hep.dataforge.vis.common.VisualGroup
 import hep.dataforge.vis.common.VisualObject
 
@@ -13,28 +12,35 @@ enum class CompositeType {
     SUBTRACT
 }
 
-class Composite(
+open class Composite(
     parent: VisualObject?,
     val first: VisualObject,
     val second: VisualObject,
     val type: CompositeType = CompositeType.UNION,
-    meta: Meta = EmptyMeta
-) : DisplayLeaf(parent, meta)
+    meta: Array<out Meta>
+) : VisualObject3D(parent, meta)
 
-fun VisualGroup.composite(type: CompositeType, builder: VisualGroup.() -> Unit): Composite {
+fun VisualGroup.composite(
+    type: CompositeType,
+    name: String? = null,
+    vararg meta: Meta,
+    builder: VisualGroup.() -> Unit
+): Composite {
     val group = VisualGroup().apply(builder)
     val children = group.toList()
     if (children.size != 2) error("Composite requires exactly two children")
-    return Composite(this, children[0], children[1], type, group.properties.seal()).also {
-        this.add(it)
+    val groupMeta = group.properties.seal()
+    return Composite(this, children[0], children[1], type, meta).also {
+        it.config.update(groupMeta)
+        set(name, it)
     }
 }
 
-fun VisualGroup.union(builder: VisualGroup.() -> Unit) =
-    composite(CompositeType.UNION,builder)
+fun VisualGroup.union(name: String? = null, vararg meta: Meta, builder: VisualGroup.() -> Unit) =
+    composite(CompositeType.UNION, name, *meta, builder = builder)
 
-fun VisualGroup.subtract(builder: VisualGroup.() -> Unit) =
-    composite(CompositeType.SUBTRACT,builder)
+fun VisualGroup.subtract(name: String? = null, vararg meta: Meta, builder: VisualGroup.() -> Unit) =
+    composite(CompositeType.SUBTRACT, name, *meta, builder = builder)
 
-fun VisualGroup.intersect(builder: VisualGroup.() -> Unit) =
-    composite(CompositeType.INTERSECT,builder)
\ No newline at end of file
+fun VisualGroup.intersect(name: String? = null, vararg meta: Meta, builder: VisualGroup.() -> Unit) =
+    composite(CompositeType.INTERSECT, name, *meta, builder = builder)
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Convex.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Convex.kt
index 55426f82..35cadcd6 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Convex.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Convex.kt
@@ -1,26 +1,19 @@
 package hep.dataforge.vis.spatial
 
-import hep.dataforge.meta.*
+import hep.dataforge.meta.Meta
 import hep.dataforge.vis.common.VisualGroup
-import hep.dataforge.vis.common.DisplayLeaf
+import hep.dataforge.vis.common.VisualLeaf
 import hep.dataforge.vis.common.VisualObject
 
-class Convex(parent: VisualObject?, meta: Meta) : DisplayLeaf(parent, meta) {
+class Convex(parent: VisualObject?, val points: List<Point3D>, meta: Array<out Meta>) : VisualLeaf(parent, meta) {
 
-    val points = points(properties["points"] ?: error("Vertices not defined"))
 
     companion object {
         const val TYPE = "geometry.3d.convex"
-
-        fun points(item: MetaItem<*>): List<Point3D> {
-            return item.node?.getAll("point")?.map { (_, value) ->
-                Point3D.from(value.node?: error("Point definition is not a node"))
-            } ?: emptyList()
-        }
     }
 }
 
-fun VisualGroup.convex(meta: Meta = EmptyMeta, action: ConvexBuilder.() -> Unit = {}) =
+fun VisualGroup.convex(vararg meta: Meta, action: ConvexBuilder.() -> Unit = {}) =
     ConvexBuilder().apply(action).build(this, meta).also { add(it) }
 
 class ConvexBuilder {
@@ -30,13 +23,7 @@ class ConvexBuilder {
         points.add(Point3D(x, y, z))
     }
 
-    fun build(parent: VisualObject?, meta: Meta): Convex {
-        val points = buildMeta {
-            points.forEachIndexed { index, value ->
-                "points.point[$index]" to value.toMeta()
-            }
-        }.seal()
-
-        return Convex(parent, points)
+    fun build(parent: VisualObject?, meta: Array<out Meta>): Convex {
+        return Convex(parent, points, meta)
     }
 }
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Cylinder.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Cylinder.kt
index 8e04be1d..be539ba6 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Cylinder.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Cylinder.kt
@@ -1,9 +1,8 @@
 package hep.dataforge.vis.spatial
 
-import hep.dataforge.meta.EmptyMeta
 import hep.dataforge.meta.Meta
-import hep.dataforge.vis.common.DisplayLeaf
 import hep.dataforge.vis.common.VisualGroup
+import hep.dataforge.vis.common.VisualLeaf
 import hep.dataforge.vis.common.VisualObject
 import hep.dataforge.vis.common.number
 import kotlin.math.PI
@@ -11,18 +10,23 @@ import kotlin.math.PI
 /**
  * A cylinder or cut cone segment
  */
-class Cylinder(parent: VisualObject?, meta: Meta) : DisplayLeaf(parent, meta) {
-    var radius by number()
-    var upperRadius by number(default = radius)
-    var height by number()
+class Cylinder(parent: VisualObject?, radius: Number, height: Number, meta: Array<out Meta>) :
+    VisualLeaf(parent, meta) {
+    var radius by number(radius)
+    var upperRadius by number(radius)
+    var height by number(height)
     var startAngle by number(0.0)
     var angle by number(2 * PI)
 }
 
-fun VisualGroup.cylinder(r: Number, height: Number, meta: Meta = EmptyMeta, block: Cylinder.() -> Unit = {}): Cylinder {
-    val cylinder = Cylinder(this, meta)
-    cylinder.radius = r
-    cylinder.height = height
+fun VisualGroup.cylinder(
+    r: Number,
+    height: Number,
+    name: String? = null,
+    vararg meta: Meta,
+    block: Cylinder.() -> Unit = {}
+): Cylinder {
+    val cylinder = Cylinder(this, r, height, meta)
     cylinder.apply(block)
-    return cylinder.also { add(it) }
+    return cylinder.also { set(name, it) }
 }
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Extruded.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Extruded.kt
index 0f1763bb..49dac4ff 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Extruded.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Extruded.kt
@@ -1,8 +1,8 @@
 package hep.dataforge.vis.spatial
 
-import hep.dataforge.meta.*
-import hep.dataforge.vis.common.DisplayLeaf
+import hep.dataforge.meta.Meta
 import hep.dataforge.vis.common.VisualGroup
+import hep.dataforge.vis.common.VisualLeaf
 import hep.dataforge.vis.common.VisualObject
 import kotlin.math.PI
 import kotlin.math.cos
@@ -18,7 +18,7 @@ class Shape2DBuilder {
         list.add(Point2D(x, y))
     }
 
-    infix fun Number.to(y:Number) = point(this, y)
+    infix fun Number.to(y: Number) = point(this, y)
 
     fun build(): Shape2D = list
 }
@@ -31,45 +31,22 @@ fun Shape2DBuilder.polygon(vertices: Int, radius: Number) {
     }
 }
 
-class Layer(override val config: Config) : Specific {
-    var z by number(0.0)
-    var x by number(0.0)
-    var y by number(0.0)
-    var scale by number(1.0)
+data class Layer(var x: Number, var y: Number, var z: Number, var scale: Number)
 
-    companion object : Specification<Layer> {
-        override fun wrap(config: Config): Layer = Layer(config)
-    }
-}
+class Extruded(parent: VisualObject?, meta: Array<out Meta>) : VisualLeaf(parent, meta), Shape {
 
-//class Layer(val z: Number, val x: Number = 0.0, val y: Number = 0.0, val scale: Number = 1.0)
-
-class Extruded(parent: VisualObject?, meta: Meta) : DisplayLeaf(parent, meta), Shape {
-
-    val shape
-        get() = properties.getAll("shape.point").map { (_, value) ->
-            Point2D.from(value.node ?: error("Point definition is not a node"))
-        }
+    var shape: List<Point2D> = ArrayList()
 
     fun shape(block: Shape2DBuilder.() -> Unit) {
-        val points = Shape2DBuilder().apply(block).build().map { it.toMeta() }
-        properties["shape.point"] = points
+        this.shape = Shape2DBuilder().apply(block).build()
+        //TODO send invalidation signal
     }
 
-    val layers
-        get() = properties.getAll("layer").values.map {
-            Layer.wrap(it.node ?: error("layer item is not a node"))
-        }
+    val layers: MutableList<Layer> = ArrayList()
 
-    fun layer(z: Number, x: Number = 0.0, y: Number = 0.0, scale: Number = 1.0): Layer {
-        val layer = Layer.build {
-            this.x = x
-            this.y = y
-            this.z = z
-            this.scale = scale
-        }
-        properties.append("layer", layer)
-        return layer
+    fun layer(z: Number, x: Number = 0.0, y: Number = 0.0, scale: Number = 1.0) {
+        layers.add(Layer(x,y,z,scale))
+        //TODO send invalidation signal
     }
 
     override fun <T : Any> toGeometry(geometryBuilder: GeometryBuilder<T>) {
@@ -121,5 +98,5 @@ class Extruded(parent: VisualObject?, meta: Meta) : DisplayLeaf(parent, meta), S
     }
 }
 
-fun VisualGroup.extrude(meta: Meta = EmptyMeta, action: Extruded.() -> Unit = {}) =
-    Extruded(this, meta).apply(action).also { add(it) }
\ No newline at end of file
+fun VisualGroup.extrude(name: String? = null, vararg meta: Meta, action: Extruded.() -> Unit = {}) =
+    Extruded(this, meta).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/Sphere.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Sphere.kt
index 501a5881..cdc8e0b9 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Sphere.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Sphere.kt
@@ -1,14 +1,13 @@
 package hep.dataforge.vis.spatial
 
-import hep.dataforge.meta.EmptyMeta
 import hep.dataforge.meta.Meta
 import hep.dataforge.vis.common.VisualGroup
-import hep.dataforge.vis.common.DisplayLeaf
+import hep.dataforge.vis.common.VisualLeaf
 import hep.dataforge.vis.common.VisualObject
 import hep.dataforge.vis.common.double
 import kotlin.math.PI
 
-class Sphere(parent: VisualObject?, meta: Meta) : DisplayLeaf(parent, meta) {
+class Sphere(parent: VisualObject?, meta: Array<out Meta>) : VisualLeaf(parent, meta) {
     var radius by double(50.0)
     var phiStart by double(0.0)
     var phi by double(2 * PI)
@@ -16,17 +15,15 @@ class Sphere(parent: VisualObject?, meta: Meta) : DisplayLeaf(parent, meta) {
     var theta by double(PI)
 }
 
-fun VisualGroup.sphere(meta: Meta = EmptyMeta, action: Sphere.() -> Unit = {}) =
-    Sphere(this, meta).apply(action).also { add(it) }
-
 fun VisualGroup.sphere(
     radius: Number,
     phi: Number = 2 * PI,
     theta: Number = PI,
-    meta: Meta = EmptyMeta,
+    name: String? = null,
+    vararg meta: Meta,
     action: Sphere.() -> Unit = {}
 ) = Sphere(this, meta).apply(action).apply {
     this.radius = radius.toDouble()
     this.phi = phi.toDouble()
     this.theta = theta.toDouble()
-}.also { add(it) }
\ No newline at end of file
+}.also { set(name, it) }
\ No newline at end of file
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
new file mode 100644
index 00000000..306a820c
--- /dev/null
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualObject3D.kt
@@ -0,0 +1,196 @@
+package hep.dataforge.vis.spatial
+
+import hep.dataforge.meta.*
+import hep.dataforge.names.plus
+import hep.dataforge.output.Output
+import hep.dataforge.vis.common.VisualGroup
+import hep.dataforge.vis.common.VisualLeaf
+import hep.dataforge.vis.common.VisualObject
+import hep.dataforge.vis.common.asName
+
+/**
+ * Performance optimized version of visual object
+ */
+open class VisualObject3D(parent: VisualObject?, tagRefs: Array<out Meta>) : VisualLeaf(parent, tagRefs) {
+    var x: Number? = null; get() = field ?: (this as VisualLeaf).x
+    var y: Number? = null; get() = field ?: (this as VisualLeaf).y
+    var z: Number? = null; get() = field ?: (this as VisualLeaf).z
+
+    var rotationX: Number? = null; get() = field ?: (this as VisualLeaf).rotationX
+    var rotationY: Number? = null; get() = field ?: (this as VisualLeaf).rotationY
+    var rotationZ: Number? = null; get() = field ?: (this as VisualLeaf).rotationZ
+}
+
+fun VisualGroup.group(key: String? = null, vararg meta: Meta, action: VisualGroup.() -> Unit = {}): VisualGroup =
+    VisualGroup(this, meta).apply(action).also { set(key, it) }
+
+
+fun Output<VisualObject>.render(meta: Meta = EmptyMeta, action: VisualGroup.() -> Unit) =
+    render(VisualGroup().apply(action), meta)
+
+//TODO replace properties by containers?
+
+object PropertyNames3D {
+    val x = "x".asName()
+    val y = "y".asName()
+    val z = "z".asName()
+
+    val position = "pos".asName()
+
+    val xPos = position + x
+    val yPos = position + y
+    val zPos = position + z
+
+    val rotation = "rotation".asName()
+
+    val xRotation = rotation + x
+    val yRotation = rotation + y
+    val zRotation = rotation + z
+
+    val rotationOrder = rotation + "order"
+
+    val scale = "scale".asName()
+
+    val xScale = scale + x
+    val yScale = scale + y
+    val zScale = scale + z
+}
+
+// Common properties
+
+/**
+ * Visibility property. Inherited from parent
+ */
+var VisualObject.visible
+    get() = properties["visible"].boolean ?: true
+    set(value) {
+        config["visible"] = value
+    }
+
+// 3D Object position
+
+/**
+ * x position property relative to parent. Not inherited
+ */
+var VisualObject.x
+    get() =  config[PropertyNames3D.xPos].number ?: 0.0
+    set(value) {
+        config[PropertyNames3D.xPos] = value
+    }
+
+
+/**
+ * y position property. Not inherited
+ */
+var VisualObject.y
+    get() = config[PropertyNames3D.yPos].number ?: 0.0
+    set(value) {
+        config[PropertyNames3D.yPos] = value
+    }
+
+
+/**
+ * z position property. Not inherited
+ */
+var VisualObject.z
+    get() = config[PropertyNames3D.zPos].number ?: 0.0
+    set(value) {
+        config[PropertyNames3D.zPos] = value
+    }
+
+// 3D Object rotation
+
+
+/**
+ * x rotation relative to parent. Not inherited
+ */
+var VisualObject.rotationX
+    get() = config[PropertyNames3D.xRotation].number ?: 0.0
+    set(value) {
+        config[PropertyNames3D.xRotation] = value
+    }
+
+/**
+ * y rotation relative to parent. Not inherited
+ */
+var VisualObject.rotationY
+    get() = config[PropertyNames3D.yRotation].number ?: 0.0
+    set(value) {
+        config[PropertyNames3D.yRotation] = value
+    }
+
+/**
+ * z rotation relative to parent. Not inherited
+ */
+var VisualObject.rotationZ
+    get() = config[PropertyNames3D.zRotation].number ?: 0.0
+    set(value) {
+        config[PropertyNames3D.zRotation] = value
+    }
+
+enum class RotationOrder {
+    XYZ,
+    YZX,
+    ZXY,
+    XZY,
+    YXZ,
+    ZYX
+}
+
+/**
+ * Rotation order. Not inherited
+ */
+var VisualObject.rotationOrder: RotationOrder
+    get() = config[PropertyNames3D.rotationOrder].enum<RotationOrder>() ?: RotationOrder.XYZ
+    set(value) {
+        config[PropertyNames3D.rotationOrder] = value
+    }
+
+// 3D object scale
+
+/**
+ * X scale. Not inherited
+ */
+var VisualObject.scaleX
+    get() = config[PropertyNames3D.xScale].number ?: 1.0
+    set(value) {
+        config[PropertyNames3D.xScale] = value
+    }
+
+/**
+ * Y scale. Not inherited
+ */
+var VisualObject.scaleY
+    get() = config[PropertyNames3D.yScale].number ?: 1.0
+    set(value) {
+        config[PropertyNames3D.yScale] = value
+    }
+
+/**
+ * Z scale. Not inherited
+ */
+var VisualObject.scaleZ
+    get() = config[PropertyNames3D.zScale].number ?: 1.0
+    set(value) {
+        config[PropertyNames3D.zScale] = value
+    }
+
+//TODO add inherited scale
+
+/**
+ * Preferred number of polygons for displaying the object. If not defined, uses shape or renderer default
+ */
+var VisualObject.detail: Int?
+    get() = properties["detail"]?.int
+    set(value) {
+        config["detail"] = value
+    }
+
+object World {
+    const val CAMERA_INITIAL_DISTANCE = -500.0
+    const val CAMERA_INITIAL_X_ANGLE = -50.0
+    const val CAMERA_INITIAL_Y_ANGLE = 0.0
+    const val CAMERA_INITIAL_Z_ANGLE = -210.0
+    const val CAMERA_NEAR_CLIP = 0.1
+    const val CAMERA_FAR_CLIP = 10000.0
+}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/displayObject3D.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/displayObject3D.kt
deleted file mode 100644
index 3d1ebfdd..00000000
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/displayObject3D.kt
+++ /dev/null
@@ -1,164 +0,0 @@
-package hep.dataforge.vis.spatial
-
-import hep.dataforge.meta.*
-import hep.dataforge.names.toName
-import hep.dataforge.output.Output
-import hep.dataforge.vis.common.VisualGroup
-import hep.dataforge.vis.common.VisualObject
-import hep.dataforge.vis.common.getProperty
-
-fun VisualGroup.group(meta: Meta = EmptyMeta, action: VisualGroup.() -> Unit = {}): VisualGroup =
-    VisualGroup(this, meta).apply(action).also { add(it) }
-
-
-fun Output<VisualObject>.render(meta: Meta = EmptyMeta, action: VisualGroup.() -> Unit) =
-    render(VisualGroup(null, EmptyMeta).apply(action), meta)
-
-//TODO replace properties by containers?
-
-// Common properties
-
-/**
- * Visibility property. Inherited from parent
- */
-var VisualObject.visible
-    get() = getProperty("visible").boolean ?: true
-    set(value) {
-        properties["visible"] = value
-    }
-
-// 3D Object position
-
-private val xPos = "pos.x".toName()
-/**
- * x position property relative to parent. Not inherited
- */
-var VisualObject.x
-    get() = properties[xPos].number ?: 0.0
-    set(value) {
-        properties[xPos] = value
-    }
-
-private val yPos = "pos.y".toName()
-
-/**
- * y position property. Not inherited
- */
-var VisualObject.y
-    get() = properties[yPos].number ?: 0.0
-    set(value) {
-        properties[yPos] = value
-    }
-
-private val zPos = "pos.z".toName()
-
-/**
- * z position property. Not inherited
- */
-var VisualObject.z
-    get() = properties[zPos].number ?: 0.0
-    set(value) {
-        properties[zPos] = value
-    }
-
-// 3D Object rotation
-
-private val xRotation = "rotation.x".toName()
-
-/**
- * x rotation relative to parent. Not inherited
- */
-var VisualObject.rotationX
-    get() = properties[xRotation].number ?: 0.0
-    set(value) {
-        properties[xRotation] = value
-    }
-
-private val yRotation = "rotation.y".toName()
-
-/**
- * y rotation relative to parent. Not inherited
- */
-var VisualObject.rotationY
-    get() = properties[yRotation].number ?: 0.0
-    set(value) {
-        properties[yRotation] = value
-    }
-
-private val zRotation = "rotation.z".toName()
-
-/**
- * z rotation relative to parent. Not inherited
- */
-var VisualObject.rotationZ
-    get() = properties[zRotation].number ?: 0.0
-    set(value) {
-        properties[zRotation] = value
-    }
-
-enum class RotationOrder {
-    XYZ,
-    YZX,
-    ZXY,
-    XZY,
-    YXZ,
-    ZYX
-}
-
-/**
- * Rotation order. Not inherited
- */
-var VisualObject.rotationOrder: RotationOrder
-    get() = getProperty("rotation.order").enum<RotationOrder>() ?: RotationOrder.XYZ
-    set(value) {
-        properties["rotation.order"] = value
-    }
-
-// 3D object scale
-
-/**
- * X scale. Not inherited
- */
-var VisualObject.scaleX
-    get() = properties["scale.x"].number ?: 1.0
-    set(value) {
-        properties["scale.x"] = value
-    }
-
-/**
- * Y scale. Not inherited
- */
-var VisualObject.scaleY
-    get() = properties["scale.y"].number ?: 1.0
-    set(value) {
-        properties["scale.y"] = value
-    }
-
-/**
- * Z scale. Not inherited
- */
-var VisualObject.scaleZ
-    get() = properties["scale.z"].number ?: 1.0
-    set(value) {
-        properties["scale.z"] = value
-    }
-
-//TODO add inherited scale
-
-/**
- * Preferred number of polygons for displaying the object. If not defined, uses shape or renderer default
- */
-var VisualObject.detail: Int?
-    get() = properties["detail"]?.int
-    set(value) {
-        properties["detail"] = value
-    }
-
-object World {
-    const val CAMERA_INITIAL_DISTANCE = -500.0
-    const val CAMERA_INITIAL_X_ANGLE = -50.0
-    const val CAMERA_INITIAL_Y_ANGLE = 0.0
-    const val CAMERA_INITIAL_Z_ANGLE = -210.0
-    const val CAMERA_NEAR_CLIP = 0.1
-    const val CAMERA_FAR_CLIP = 10000.0
-}
\ No newline at end of file
diff --git a/dataforge-vis-spatial/src/commonTest/kotlin/hep/dataforge/vis/spatial/ConvexTest.kt b/dataforge-vis-spatial/src/commonTest/kotlin/hep/dataforge/vis/spatial/ConvexTest.kt
index 48a93aa6..85291506 100644
--- a/dataforge-vis-spatial/src/commonTest/kotlin/hep/dataforge/vis/spatial/ConvexTest.kt
+++ b/dataforge-vis-spatial/src/commonTest/kotlin/hep/dataforge/vis/spatial/ConvexTest.kt
@@ -26,7 +26,7 @@ class ConvexTest {
 
         val convex = group.first() as Convex
 
-        val pointsNode = convex.properties["points"].node
+        val pointsNode = convex.config["points"].node
 
         assertEquals(8, pointsNode?.items?.count())
         val points = pointsNode?.getAll("point".toName())
diff --git a/dataforge-vis-spatial/src/commonTest/kotlin/hep/dataforge/vis/spatial/GroupTest.kt b/dataforge-vis-spatial/src/commonTest/kotlin/hep/dataforge/vis/spatial/GroupTest.kt
new file mode 100644
index 00000000..c9f2ea51
--- /dev/null
+++ b/dataforge-vis-spatial/src/commonTest/kotlin/hep/dataforge/vis/spatial/GroupTest.kt
@@ -0,0 +1,52 @@
+package hep.dataforge.vis.spatial
+
+import hep.dataforge.vis.common.Colors
+import hep.dataforge.vis.common.VisualGroup
+import hep.dataforge.vis.common.color
+import kotlin.math.PI
+import kotlin.test.Test
+import kotlin.test.assertEquals
+
+class GroupTest {
+    @Test
+    fun testGroupWithComposite(){
+        val group = VisualGroup().apply{
+            union {
+                box(100, 100, 100) {
+                    z = 100
+                    rotationX = PI / 4
+                    rotationY = PI / 4
+                }
+                box(100, 100, 100)
+                color {
+                    "color" to Colors.lightgreen
+                    "opacity" to 0.3
+                }
+            }
+            intersect{
+                box(100, 100, 100) {
+                    z = 100
+                    rotationX = PI / 4
+                    rotationY = PI / 4
+                }
+                box(100, 100, 100)
+                y = 300
+                color(Colors.red)
+            }
+            subtract{
+                box(100, 100, 100) {
+                    z = 100
+                    rotationX = PI / 4
+                    rotationY = PI / 4
+                }
+                box(100, 100, 100)
+                y = -300
+                color(Colors.blue)
+            }
+        }
+
+        assertEquals(3, group.count())
+        assertEquals(300.0,group.toList()[1].y.toDouble())
+        assertEquals(-300.0,group.toList()[2].y.toDouble())
+    }
+}
\ No newline at end of file