demo/gdml/src/jsMain/kotlin/hep/dataforge/vision/gdml/demo/GDMLAppComponent.kt

@@ -10,13 +10,11 @@ import hep.dataforge.vision.gdml.toVision
 import hep.dataforge.vision.react.ThreeCanvasComponent
 import hep.dataforge.vision.react.flexColumn
 import hep.dataforge.vision.solid.Solid
-import hep.dataforge.vision.solid.SolidManager
+import hep.dataforge.vision.solid.Solids
 import hep.dataforge.vision.solid.specifications.Canvas3DOptions
 import hep.dataforge.vision.solid.three.ThreeCanvas
 import kotlinx.browser.window
 import kotlinx.css.*
-import space.kscience.gdml.Gdml
-import space.kscience.gdml.decodeFromString
 import org.w3c.files.FileReader
 import org.w3c.files.get
 import react.RProps
@@ -24,6 +22,8 @@ import react.child
 import react.dom.h1
 import react.functionalComponent
 import react.useState
+import space.kscience.gdml.Gdml
+import space.kscience.gdml.decodeFromString
 import styled.css
 import styled.styledDiv
 
@@ -52,7 +52,7 @@ val GDMLApp = functionalComponent<GDMLAppProps>("GDMLApp") { props ->
     }
 
     fun loadData(name: String, data: String) {
-        val visionManager = props.context.plugins.fetch(SolidManager).visionManager
+        val visionManager = props.context.plugins.fetch(Solids).visionManager
         val parsedVision = when {
             name.endsWith(".gdml") || name.endsWith(".xml") -> {
                 val gdml = Gdml.decodeFromString(data)

demo/gdml/src/jvmMain/kotlin/hep/dataforge/vision/gdml/demo/readFile.kt

@@ -1,14 +1,10 @@
 package hep.dataforge.vision.gdml.demo
 
 import hep.dataforge.misc.DFExperimental
-import hep.dataforge.values.asValue
-import hep.dataforge.vision.gdml.readFile
-import hep.dataforge.vision.gdml.toVision
-import hep.dataforge.vision.solid.SolidGroup
-import hep.dataforge.vision.solid.SolidManager
-import hep.dataforge.vision.solid.SolidMaterial
 import hep.dataforge.vision.Vision
 import hep.dataforge.vision.VisionManager
+import hep.dataforge.vision.gdml.readFile
+import hep.dataforge.vision.gdml.toVision
 import space.kscience.gdml.Gdml
 import java.io.File
 import java.util.zip.GZIPInputStream

demo/gdml/src/jvmMain/kotlin/hep/dataforge/vision/gdml/demo/saveToJson.kt

@@ -2,7 +2,7 @@ package hep.dataforge.vision.gdml.demo
 
 import hep.dataforge.vision.gdml.readFile
 import hep.dataforge.vision.gdml.toVision
-import hep.dataforge.vision.solid.SolidManager
+import hep.dataforge.vision.solid.Solids
 import space.kscience.gdml.Gdml
 import space.kscience.gdml.LUnit
 import java.io.File
@@ -21,7 +21,7 @@ fun main(args: Array<String>) {
         lUnit = LUnit.CM
     }
 
-    val json = SolidManager.encodeToString(vision)
+    val json = Solids.encodeToString(vision)
     println(json)
     File(outputFileName).writeText(json)
     //File("D:\\Work\\Projects\\gdml.kt\\gdml-source\\cubes.json").writeText(json)

demo/gdml/src/jvmTest/kotlin/hep/dataforge/vision/solid/FileSerializationTest.kt

@@ -9,7 +9,7 @@ class FileSerializationTest {
     @Ignore
     fun testFileRead(){
         val text = this::class.java.getResourceAsStream("/cubes.json").readBytes().decodeToString()
-        val visual = SolidManager.decodeFromString(text) as SolidGroup
+        val visual = Solids.decodeFromString(text) as SolidGroup
         visual["composite_001".asName()]
     }
 }

demo/jupyter-playground/src/main/kotlin/hep/dataforge/playground/VisionForgePlayGroundForJupyter.kt

@@ -10,7 +10,8 @@ import hep.dataforge.vision.html.embedVisionFragment
 import hep.dataforge.vision.html.fragment
 import hep.dataforge.vision.plotly.toVision
 import hep.dataforge.vision.plotly.usePlotly
-import hep.dataforge.vision.solid.useSolids
+import hep.dataforge.vision.plugins
+import hep.dataforge.vision.solid.Solids
 import hep.dataforge.vision.visionManager
 import kotlinx.html.div
 import kotlinx.html.id
@@ -51,7 +52,7 @@ internal class VisionForgePlayGroundForJupyter : JupyterIntegration() {
         resource(jsResource)
 
         onLoaded {
-            VisionForge.useSolids()
+            VisionForge.plugins.fetch(Solids)
             VisionForge.usePlotly()
         }
 

demo/muon-monitor/build.gradle.kts

@@ -51,6 +51,7 @@ kotlin {
                 implementation("io.ktor:ktor-client-js:$ktorVersion")
                 implementation("io.ktor:ktor-client-serialization:$ktorVersion")
                 implementation(project(":visionforge-threejs"))
+                implementation(devNpm("webpack-bundle-analyzer", "4.4.0"))
             }
         }
     }

demo/muon-monitor/src/jvmMain/kotlin/ru/mipt/npm/muon/monitor/server/MMServer.kt

@@ -4,7 +4,7 @@ package ru.mipt.npm.muon.monitor.server
 import hep.dataforge.context.Context
 import hep.dataforge.context.Global
 import hep.dataforge.misc.DFExperimental
-import hep.dataforge.vision.solid.SolidManager
+import hep.dataforge.vision.solid.Solids
 import io.ktor.application.Application
 import io.ktor.application.call
 import io.ktor.application.install
@@ -38,7 +38,7 @@ private val generator = Cos2TrackGenerator(JDKRandomGenerator(223))
 fun Application.module(context: Context = Global) {
     val currentDir = File(".").absoluteFile
     environment.log.info("Current directory: $currentDir")
-    val solidManager = context.plugins.load(SolidManager)
+    val solidManager = context.plugins.load(Solids)
 
     install(DefaultHeaders)
     install(CallLogging)

demo/playground/src/jvmMain/kotlin/gdmlCubes.kt

@@ -6,7 +6,7 @@ import hep.dataforge.vision.gdml.toVision
 import hep.dataforge.vision.html.ResourceLocation
 import hep.dataforge.vision.html.fragment
 import hep.dataforge.vision.invoke
-import hep.dataforge.vision.solid.useSolids
+import hep.dataforge.vision.solid.Solids
 import space.kscience.gdml.*
 
 internal val cubes = Gdml {
@@ -60,12 +60,11 @@ internal val cubes = Gdml {
 }
 
 @DFExperimental
-fun main() = VisionForge {
+fun main() = VisionForge(Solids) {
     val content = VisionForge.fragment {
         vision("canvas") {
             cubes.toVision()
         }
     }
-    useSolids()
     makeVisionFile(content, resourceLocation = ResourceLocation.SYSTEM)
 }

demo/playground/src/jvmMain/kotlin/generateSchema.kt

@@ -2,14 +2,14 @@ package hep.dataforge.vision.examples
 
 import com.github.ricky12awesome.jss.encodeToSchema
 import hep.dataforge.vision.solid.SolidGroup
-import hep.dataforge.vision.solid.SolidManager
+import hep.dataforge.vision.solid.Solids
 import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.json.Json
 
 @ExperimentalSerializationApi
 fun main() {
     val schema = Json {
-        serializersModule = SolidManager.serializersModuleForSolids
+        serializersModule = Solids.serializersModuleForSolids
         prettyPrintIndent = "  "
         prettyPrint = true
         ignoreUnknownKeys = true

demo/playground/src/jvmMain/kotlin/plotlyVision.kt

@@ -5,12 +5,12 @@ import hep.dataforge.vision.VisionForge
 import hep.dataforge.vision.html.ResourceLocation
 import hep.dataforge.vision.html.fragment
 import hep.dataforge.vision.invoke
+import hep.dataforge.vision.plotly.PlotlyPlugin
 import hep.dataforge.vision.plotly.plotly
-import hep.dataforge.vision.plotly.usePlotly
 import kscience.plotly.scatter
 
 @DFExperimental
-fun main() = VisionForge {
+fun main() = VisionForge(PlotlyPlugin) {
     val fragment = fragment {
         vision {
             plotly {
@@ -21,6 +21,5 @@ fun main() = VisionForge {
             }
         }
     }
-    usePlotly()
     makeVisionFile(fragment, resourceLocation = ResourceLocation.SYSTEM)
 }

demo/playground/src/jvmMain/kotlin/randomSpheres.kt

@@ -11,7 +11,7 @@ import java.nio.file.Paths
 import kotlin.random.Random
 
 @OptIn(DFExperimental::class)
-fun main() = VisionForge.invoke {
+fun main() = VisionForge(Solids) {
 
     val random = Random(112233)
     val fragment = fragment {
@@ -33,7 +33,6 @@ fun main() = VisionForge.invoke {
             }
         }
     }
-    useSolids()
     makeVisionFile(
         fragment,
         Paths.get("randomSpheres.html"),

demo/playground/src/jvmMain/kotlin/simpleCube.kt

@@ -5,12 +5,12 @@ import hep.dataforge.vision.VisionForge
 import hep.dataforge.vision.html.ResourceLocation
 import hep.dataforge.vision.html.fragment
 import hep.dataforge.vision.invoke
+import hep.dataforge.vision.solid.Solids
 import hep.dataforge.vision.solid.box
 import hep.dataforge.vision.solid.solid
-import hep.dataforge.vision.solid.useSolids
 
 @DFExperimental
-fun main() = VisionForge.invoke {
+fun main() = VisionForge(Solids) {
     val content = fragment {
         vision("canvas") {
             solid {
@@ -18,6 +18,5 @@ fun main() = VisionForge.invoke {
             }
         }
     }
-    useSolids()
     makeVisionFile(content, resourceLocation = ResourceLocation.SYSTEM)
 }

demo/sat-demo/src/main/kotlin/ru/mipt/npm/sat/satServer.kt

@@ -16,7 +16,7 @@ import kotlin.random.Random
 
 fun main() {
     val satContext = Global.context("sat") {
-        plugin(SolidManager)
+        plugin(Solids)
     }
 
     //Create a geometry

ui/bootstrap/src/main/kotlin/hep/dataforge/vision/bootstrap/outputConfig.kt

@@ -44,7 +44,7 @@ public external interface CanvasControlsProps : RProps {
 
 public val CanvasControls: FunctionalComponent<CanvasControlsProps> = functionalComponent("CanvasControls") { props ->
     val visionManager = useMemo(
-        { props.canvas.three.solidManager.visionManager },
+        { props.canvas.three.solids.visionManager },
         arrayOf(props.canvas)
     )
     flexColumn {

visionforge-core/src/commonMain/kotlin/hep/dataforge/vision/VisionForge.kt

@@ -2,11 +2,16 @@ package hep.dataforge.vision
 
 import hep.dataforge.context.Context
 import hep.dataforge.context.PluginManager
+import hep.dataforge.misc.DFExperimental
 
+@DFExperimental
 public expect object VisionForge
 
+@DFExperimental
 public expect val VisionForge.context: Context
 
+@DFExperimental
 public val VisionForge.plugins: PluginManager get() = context.plugins
 
+@DFExperimental
 public val VisionForge.visionManager: VisionManager get() = plugins.fetch(VisionManager)

visionforge-core/src/commonMain/kotlin/hep/dataforge/vision/html/VisionTagConsumer.kt

@@ -20,6 +20,8 @@ import kotlin.collections.set
 public class VisionOutput @PublishedApi internal constructor() {
     public var meta: Meta = Meta.EMPTY
 
+    //TODO expose a way to define required plugins.
+
     public inline fun meta(block: MetaBuilder.() -> Unit) {
         this.meta = Meta(block)
     }

visionforge-core/src/jsMain/kotlin/hep/dataforge/vision/visionForgeJs.kt

@@ -1,10 +1,12 @@
 package hep.dataforge.vision
 
 import hep.dataforge.context.Context
+import hep.dataforge.misc.DFExperimental
 import kotlinx.browser.document
 import kotlinx.browser.window
 
 @JsExport
+@DFExperimental
 public actual object VisionForge{
     /**
      * Render all visions in this [window] using current global state of [VisionForge]
@@ -32,6 +34,8 @@ private val visionForgeContext = Context("VisionForge"){
     plugin(VisionClient)
 }
 
+@DFExperimental
 public actual val VisionForge.context: Context get() = visionForgeContext
 
+@DFExperimental
 public val VisionForge.visionClient: VisionClient get() = plugins.fetch(VisionClient)

visionforge-core/src/jvmMain/kotlin/hep/dataforge/vision/visionForgeJvm.kt

@@ -1,13 +1,22 @@
 package hep.dataforge.vision
 
 import hep.dataforge.context.Context
+import hep.dataforge.context.PluginFactory
 import hep.dataforge.misc.DFExperimental
 
+@DFExperimental
 public actual object VisionForge
 
+@DFExperimental
 private val visionForgeContext = Context("VisionForge")
 
+@DFExperimental
 public actual val VisionForge.context: Context get() = visionForgeContext
 
 @DFExperimental
-public operator fun VisionForge.invoke(block: VisionForge.() -> Unit): Unit = run(block)
+public operator fun VisionForge.invoke(vararg modules: PluginFactory<out VisionPlugin>, block: VisionForge.() -> Unit): Unit {
+    modules.forEach {
+        plugins.fetch(it)
+    }
+    run(block)
+}

visionforge-gdml/src/jvmTest/kotlin/hep/dataforge/vision/gdml/TestConvertor.kt

@@ -1,7 +1,7 @@
 package hep.dataforge.vision.gdml
 
 import hep.dataforge.names.toName
-import hep.dataforge.vision.solid.SolidManager
+import hep.dataforge.vision.solid.Solids
 import org.junit.jupiter.api.Test
 import space.kscience.gdml.Gdml
 import space.kscience.gdml.decodeFromStream
@@ -23,7 +23,7 @@ class TestConvertor {
         val gdml = Gdml.decodeFromStream(stream)
         val vision = gdml.toVision()
         assertNotNull(vision.getPrototype("solids.box".toName()))
-        println(SolidManager.encodeToString(vision))
+        println(Solids.encodeToString(vision))
     }
 
     @Test

visionforge-gdml/src/jvmTest/kotlin/hep/dataforge/vision/gdml/TestCubes.kt

@@ -4,8 +4,8 @@ import hep.dataforge.context.Context
 import hep.dataforge.names.toName
 import hep.dataforge.vision.Vision
 import hep.dataforge.vision.solid.SolidGroup
-import hep.dataforge.vision.solid.SolidManager
 import hep.dataforge.vision.solid.SolidReference
+import hep.dataforge.vision.solid.Solids
 import hep.dataforge.vision.visionManager
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertDoesNotThrow
@@ -13,7 +13,7 @@ import space.kscience.gdml.*
 import kotlin.test.assertNotNull
 
 internal val testContext = Context("TEST"){
-    plugin(SolidManager)
+    plugin(Solids)
 }
 
 class TestCubes {
@@ -77,7 +77,7 @@ class TestCubes {
     @Test
     fun testCubesReSerialize(){
         val vision = cubes.toVision()
-        val serialized = SolidManager.encodeToString(vision)
+        val serialized = Solids.encodeToString(vision)
         val deserialized = testContext.visionManager.decodeFromString(serialized) as SolidGroup
         assertNotNull(deserialized.getPrototype("solids.smallBox".toName()))
         //println(testContext.visionManager.encodeToString(deserialized))

visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/SolidGroup.kt

@@ -28,7 +28,7 @@ public interface PrototypeHolder {
 @Serializable
 @SerialName("group.solid")
 public class SolidGroup(
-    @Serializable(Prototypes.Companion::class) @SerialName("prototypes") internal var prototypes: MutableVisionGroup? = null,
+    @Serializable(PrototypeSerializer::class) internal var prototypes: MutableVisionGroup? = null,
 ) : VisionGroupBase(), Solid, PrototypeHolder {
 
     init {
@@ -98,17 +98,9 @@ public fun VisionContainerBuilder<Vision>.group(name: String, action: SolidGroup
 /**
  * A special class which works as a holder for prototypes
  */
-@Serializable(Prototypes.Companion::class)
 internal class Prototypes(
-    children: Map<NameToken, Vision> = emptyMap(),
-) : VisionGroupBase(children as? MutableMap<NameToken, Vision> ?: children.toMutableMap()), PrototypeHolder {
-
-    init {
-        //used during deserialization only
-        children.values.forEach {
-            it.parent = parent
-        }
-    }
+    children: MutableMap<NameToken, Vision> = hashMapOf(),
+) : VisionGroupBase(children), PrototypeHolder {
 
     override fun getProperty(
         name: Name,
@@ -118,34 +110,34 @@ internal class Prototypes(
     ): MetaItem? = null
 
     override fun setProperty(name: Name, item: MetaItem?, notify: Boolean) {
-        error("Can't ser property of prototypes container")
+        error("Can't set property of a prototypes container")
     }
 
     override val descriptor: NodeDescriptor? = null
 
-    companion object : KSerializer<MutableVisionGroup> {
-
-        private val mapSerializer: KSerializer<Map<NameToken, Vision>> =
-            MapSerializer(
-                NameToken.serializer(),
-                PolymorphicSerializer(Vision::class)
-            )
-
-        override val descriptor: SerialDescriptor get() = mapSerializer.descriptor
-
-        override fun deserialize(decoder: Decoder): MutableVisionGroup {
-            val map = mapSerializer.deserialize(decoder)
-            return Prototypes(map)
-        }
-
-        override fun serialize(encoder: Encoder, value: MutableVisionGroup) {
-            mapSerializer.serialize(encoder, value.children)
-        }
-    }
-
     override fun prototypes(builder: VisionContainerBuilder<Solid>.() -> Unit) {
         apply(builder)
     }
 
     override fun getPrototype(name: Name): Solid? = get(name) as? Solid
 }
+
+internal class PrototypeSerializer : KSerializer<MutableVisionGroup> {
+
+    private val mapSerializer: KSerializer<Map<NameToken, Vision>> =
+        MapSerializer(
+            NameToken.serializer(),
+            PolymorphicSerializer(Vision::class)
+        )
+
+    override val descriptor: SerialDescriptor get() = mapSerializer.descriptor
+
+    override fun deserialize(decoder: Decoder): MutableVisionGroup {
+        val map = mapSerializer.deserialize(decoder)
+        return Prototypes(map.toMutableMap())
+    }
+
+    override fun serialize(encoder: Encoder, value: MutableVisionGroup) {
+        mapSerializer.serialize(encoder, value.children)
+    }
+}

visionforge-solid/src/commonMain/kotlin/hep/dataforge/vision/solid/Solids.kt

@@ -16,16 +16,16 @@ import kotlinx.serialization.modules.subclass
 import kotlin.reflect.KClass
 
 
-public class SolidManager(meta: Meta) : VisionPlugin(meta) {
+public class Solids(meta: Meta) : VisionPlugin(meta) {
 
     override val tag: PluginTag get() = Companion.tag
 
     override val visionSerializersModule: SerializersModule get() = serializersModuleForSolids
 
-    public companion object : PluginFactory<SolidManager> {
+    public companion object : PluginFactory<Solids> {
         override val tag: PluginTag = PluginTag(name = "vision.solid", group = PluginTag.DATAFORGE_GROUP)
-        override val type: KClass<out SolidManager> = SolidManager::class
-        override fun invoke(meta: Meta, context: Context): SolidManager = SolidManager(meta)
+        override val type: KClass<out Solids> = Solids::class
+        override fun invoke(meta: Meta, context: Context): Solids = Solids(meta)
 
         private fun PolymorphicModuleBuilder<Solid>.solids() {
             subclass(SolidGroup.serializer())
@@ -69,8 +69,3 @@ public class SolidManager(meta: Meta) : VisionPlugin(meta) {
 @VisionBuilder
 @DFExperimental
 public inline fun VisionOutput.solid(block: SolidGroup.() -> Unit): SolidGroup = SolidGroup().apply(block)
-
-@DFExperimental
-public fun VisionForge.useSolids(): Unit{
-    plugins.fetch(SolidManager)
-}

visionforge-solid/src/commonTest/kotlin/hep/dataforge/vision/solid/ConvexTest.kt

@@ -28,7 +28,7 @@ class ConvexTest {
 
         val convex = group.children.values.first() as Convex
 
-        val json = SolidManager.jsonForSolids.encodeToJsonElement(Convex.serializer(), convex)
+        val json = Solids.jsonForSolids.encodeToJsonElement(Convex.serializer(), convex)
         val meta = json.toMetaItem().node!!
 
         val points = meta.getIndexed("points").values.map { (it as MetaItemNode<*>).node.point3D() }

visionforge-solid/src/commonTest/kotlin/hep/dataforge/vision/solid/SerializationTest.kt

@@ -30,9 +30,9 @@ class SerializationTest {
             x = 100
             z = -100
         }
-        val string =  SolidManager.encodeToString(cube)
+        val string =  Solids.encodeToString(cube)
         println(string)
-        val newCube = SolidManager.decodeFromString(string)
+        val newCube = Solids.decodeFromString(string)
         assertEquals(cube.meta, newCube.meta)
     }
 
@@ -51,9 +51,9 @@ class SerializationTest {
                 }
             }
         }
-        val string = SolidManager.encodeToString(group)
+        val string = Solids.encodeToString(group)
         println(string)
-        val reconstructed = SolidManager.decodeFromString(string) as SolidGroup
+        val reconstructed = Solids.decodeFromString(string) as SolidGroup
         assertEquals(group["cube"]?.meta, reconstructed["cube"]?.meta)
     }
 

visionforge-solid/src/commonTest/kotlin/hep/dataforge/vision/solid/SolidPluginTest.kt

@@ -18,7 +18,7 @@ class SolidPluginTest {
     @DFExperimental
     @Test
     fun testPluginConverter() {
-        val visionManager = Global.plugins.fetch(SolidManager).visionManager
+        val visionManager = Global.plugins.fetch(Solids).visionManager
         val meta = visionManager.encodeToMeta(vision)
 
         val reconstructed = visionManager.decodeFromMeta(meta) as SolidGroup

visionforge-solid/src/commonTest/kotlin/hep/dataforge/vision/solid/SolidReferenceTest.kt

@@ -3,7 +3,6 @@ package hep.dataforge.vision.solid
 import hep.dataforge.vision.get
 import hep.dataforge.vision.style
 import hep.dataforge.vision.useStyle
-import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.encodeToJsonElement
 import kotlin.test.Test
 import kotlin.test.assertEquals
@@ -27,8 +26,8 @@ class SolidReferenceTest {
 
     @Test
     fun testReferenceSerialization(){
-        val serialized = SolidManager.jsonForSolids.encodeToJsonElement(groupWithReference)
-        val deserialized = SolidManager.jsonForSolids.decodeFromJsonElement(SolidGroup.serializer(), serialized)
+        val serialized = Solids.jsonForSolids.encodeToJsonElement(groupWithReference)
+        val deserialized = Solids.jsonForSolids.decodeFromJsonElement(SolidGroup.serializer(), serialized)
         assertEquals("blue", (deserialized["test"] as Solid).color.string)
     }
 }

visionforge-solid/src/commonTest/kotlin/hep/dataforge/vision/solid/VisionUpdateTest.kt

@@ -10,7 +10,7 @@ import kotlin.test.assertEquals
 import kotlin.test.assertTrue
 
 class VisionUpdateTest {
-    val solidManager = Global.plugins.fetch(SolidManager)
+    val solidManager = Global.plugins.fetch(Solids)
     val visionManager = solidManager.visionManager
 
     @Test

visionforge-threejs/src/main/kotlin/hep/dataforge/vision/solid/three/ThreePlugin.kt

@@ -6,7 +6,6 @@ import hep.dataforge.names.*
 import hep.dataforge.vision.*
 import hep.dataforge.vision.solid.*
 import hep.dataforge.vision.solid.specifications.Canvas3DOptions
-import hep.dataforge.vision.solid.three.set
 import info.laht.threekt.core.Object3D
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.launchIn
@@ -20,7 +19,7 @@ import info.laht.threekt.objects.Group as ThreeGroup
 public class ThreePlugin : AbstractPlugin(), ElementVisionRenderer {
     override val tag: PluginTag get() = Companion.tag
 
-    public val solidManager: SolidManager by require(SolidManager)
+    public val solids: Solids by require(Solids)
 
     private val objectFactories = HashMap<KClass<out Solid>, ThreeFactory<*>>()
     private val compositeFactory = ThreeCompositeFactory(this)