Fix color resolution

build.gradle.kts

@@ -1,9 +1,9 @@
 plugins {
     id("ru.mipt.npm.gradle.project")
-    kotlin("multiplatform") version "1.5.30-RC" apply false
+//    kotlin("multiplatform") version "1.5.30-RC" apply false
 }
 
-val dataforgeVersion by extra("0.5.0")
+val dataforgeVersion by extra("0.5.1")
 val fxVersion by extra("11")
 
 allprojects {

demo/playground/build.gradle.kts

@@ -20,7 +20,7 @@ kotlin {
                 this.outputFileName = "js/visionforge-playground.js"
             }
             commonWebpackConfig {
-                sourceMaps = false
+                sourceMaps = true
                 cssSupport.enabled = false
             }
         }
@@ -37,7 +37,7 @@ kotlin {
     }
 
     afterEvaluate {
-        val jsBrowserDistribution by tasks.getting
+        val jsBrowserDistribution  = tasks.getByName("jsBrowserDevelopmentExecutableDistribution")
 
         tasks.getByName<ProcessResources>("jvmProcessResources") {
             dependsOn(jsBrowserDistribution)

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

@@ -17,7 +17,7 @@ fun main() {
 
     context.makeVisionFile(
         Paths.get("randomSpheres.html"),
-        resourceLocation = ResourceLocation.EMBED
+        resourceLocation = ResourceLocation.SYSTEM
     ) {
         h1 { +"Happy new year!" }
         div {

visionforge-solid/src/commonMain/kotlin/space/kscience/visionforge/solid/ColorAccessor.kt

@@ -2,16 +2,15 @@ package space.kscience.visionforge.solid
 
 import space.kscience.dataforge.names.Name
 import space.kscience.dataforge.names.plus
-import space.kscience.dataforge.values.MutableValueProvider
-import space.kscience.dataforge.values.Value
-import space.kscience.dataforge.values.asValue
-import space.kscience.dataforge.values.string
+import space.kscience.dataforge.values.*
 import space.kscience.visionforge.Colors
 import space.kscience.visionforge.VisionBuilder
 
 @VisionBuilder
-public class ColorAccessor(private val provider: MutableValueProvider, private val colorKey: Name) :
-    MutableValueProvider {
+public class ColorAccessor(
+    private val provider: MutableValueProvider,
+    private val colorKey: Name
+) : MutableValueProvider {
     public var value: Value?
         get() = provider.getValue(colorKey)
         set(value) {
@@ -26,7 +25,7 @@ public class ColorAccessor(private val provider: MutableValueProvider, private v
 }
 
 public var ColorAccessor?.string: String?
-    get() = this?.value?.string
+    get() = this?.value?.let { if(it == Null) null else it.string }
     set(value) {
         this?.value = value?.asValue()
     }

visionforge-solid/src/commonMain/kotlin/space/kscience/visionforge/solid/SolidBase.kt

@@ -5,7 +5,6 @@ import kotlinx.serialization.Serializable
 import space.kscience.dataforge.meta.MutableMeta
 import space.kscience.dataforge.meta.descriptors.MetaDescriptor
 import space.kscience.visionforge.VisionBase
-import space.kscience.visionforge.VisionChange
 
 @Serializable
 @SerialName("solid")
@@ -14,9 +13,4 @@ public open class SolidBase : VisionBase(), Solid {
     override var properties: MutableMeta? = null
 
     override val descriptor: MetaDescriptor get() = Solid.descriptor
-
-    override fun update(change: VisionChange) {
-        updatePosition(change.properties)
-        super.update(change)
-    }
 }

visionforge-threejs/src/main/kotlin/space/kscience/visionforge/solid/three/ThreeMaterials.kt

@@ -5,10 +5,7 @@ import info.laht.threekt.materials.Material
 import info.laht.threekt.materials.MeshBasicMaterial
 import info.laht.threekt.math.Color
 import info.laht.threekt.objects.Mesh
-import space.kscience.dataforge.meta.Meta
-import space.kscience.dataforge.meta.boolean
-import space.kscience.dataforge.meta.double
-import space.kscience.dataforge.meta.get
+import space.kscience.dataforge.meta.*
 import space.kscience.dataforge.names.Name
 import space.kscience.dataforge.names.asName
 import space.kscience.dataforge.values.*
@@ -100,18 +97,23 @@ public object ThreeMaterials {
 /**
  * Compute color
  */
-public fun Meta.threeColor(): Color = getValue(Name.EMPTY)?.let { value ->
-    if (value.type == ValueType.NUMBER) {
-        val int = value.int
-        Color(int)
-    } else {
-        Color(value.string)
+public fun Meta.threeColor(): Color? {
+    val value = getValue(Name.EMPTY)
+    return if (isLeaf) {
+        when {
+            value == null -> null
+            value === Null -> null
+            value.type == ValueType.NUMBER -> Color(value.int)
+            else -> Color(value.string)
         }
-} ?: Color(
+    } else {
+        Color(
             getValue(Colors.RED_KEY.asName())?.int ?: 0,
             getValue(Colors.GREEN_KEY.asName())?.int ?: 0,
             getValue(Colors.BLUE_KEY.asName())?.int ?: 0
         )
+    }
+}
 
 private var Material.cached: Boolean
     get() = userData["cached"] == true