Fix mesh conversion and lightning for examples

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

@@ -1,12 +1,21 @@
 package space.kscience.visionforge.examples
 
 import space.kscience.gdml.GdmlShowCase
-import space.kscience.visionforge.gdml.toVision
+import space.kscience.visionforge.Colors
+import space.kscience.visionforge.gdml.gdml
 import space.kscience.visionforge.solid.Solids
+import space.kscience.visionforge.solid.ambientLight
+import space.kscience.visionforge.solid.invoke
+import space.kscience.visionforge.solid.solid
 
 fun main() = makeVisionFile {
     vision("canvas") {
         requirePlugin(Solids)
-        GdmlShowCase.babyIaxo().toVision()
+        solid {
+            ambientLight {
+                color(Colors.white)
+            }
+            gdml(GdmlShowCase.babyIaxo(), "D0")
+        }
     }
 }

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

@@ -2,6 +2,7 @@ package space.kscience.visionforge.examples
 
 import kotlinx.html.div
 import kotlinx.html.h1
+import space.kscience.visionforge.Colors
 import space.kscience.visionforge.html.ResourceLocation
 import space.kscience.visionforge.solid.*
 import java.nio.file.Paths
@@ -17,6 +18,9 @@ fun main() = makeVisionFile(
     div {
         vision {
             solid {
+                ambientLight {
+                    color(Colors.white)
+                }
                 repeat(100) {
                     sphere(5, name = "sphere[$it]") {
                         x = random.nextDouble(-300.0, 300.0)

gradle.properties

@@ -1,6 +1,7 @@
 kotlin.code.style=official
 kotlin.mpp.stability.nowarn=true
 kotlin.jupyter.add.scanner=false
+#kotlin.incremental.js.ir=true
 
 org.gradle.parallel=true
 org.gradle.jvmargs=-Xmx4G

visionforge-threejs/build.gradle.kts

@@ -11,5 +11,5 @@ kotlin{
 dependencies {
     api(project(":visionforge-solid"))
     implementation(npm("three", "0.137.4"))
-    implementation(npm("three-csg-ts", "3.1.9"))
+    implementation(npm("three-csg-ts", "3.1.10"))
 }

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

@@ -38,8 +38,8 @@ public class ThreeCompositeFactory(public val three: ThreePlugin) : ThreeFactory
     override val type: KClass<in Composite> get() = Composite::class
 
     override fun invoke(three: ThreePlugin, obj: Composite): Mesh {
-        val first = three.buildObject3D(obj.first) as? Mesh ?: error("First part of composite is not a mesh")
+        val first = three.buildObject3D(obj.first).takeIfMesh() ?: error("First part of composite is not a mesh")
-        val second = three.buildObject3D(obj.second) as? Mesh ?: error("Second part of composite is not a mesh")
+        val second = three.buildObject3D(obj.second).takeIfMesh() ?: error("Second part of composite is not a mesh")
         return when (obj.compositeType) {
             CompositeType.GROUP, CompositeType.UNION -> CSG.union(first, second)
             CompositeType.INTERSECT -> CSG.intersect(first, second)

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

@@ -161,17 +161,14 @@ public fun Mesh.updateMaterialProperty(vision: Vision, propertyName: Name) {
             SolidMaterial.MATERIAL_COLOR_KEY -> {
                 material.asDynamic().color = vision.computePropertyNode(SolidMaterial.MATERIAL_COLOR_KEY)?.threeColor()
                     ?: ThreeMaterials.DEFAULT_COLOR
-                material.needsUpdate = true
             }
             SolidMaterial.SPECULAR_COLOR_KEY -> {
                 material.asDynamic().specular = vision.computePropertyNode(SolidMaterial.SPECULAR_COLOR_KEY)?.threeColor()
                     ?: ThreeMaterials.DEFAULT_COLOR
-                material.needsUpdate = true
             }
             SolidMaterial.MATERIAL_EMISSIVE_COLOR_KEY -> {
                 material.asDynamic().emissive = vision.computePropertyNode(SolidMaterial.MATERIAL_EMISSIVE_COLOR_KEY)?.threeColor()
                     ?: ThreeMaterials.BLACK_COLOR
-                material.needsUpdate = true
             }
             SolidMaterial.MATERIAL_OPACITY_KEY -> {
                 val opacity = vision.getPropertyValue(
@@ -180,16 +177,15 @@ public fun Mesh.updateMaterialProperty(vision: Vision, propertyName: Name) {
                 )?.double ?: 1.0
                 material.opacity = opacity
                 material.transparent = opacity < 1.0
-                material.needsUpdate = true
             }
             SolidMaterial.MATERIAL_WIREFRAME_KEY -> {
                 material.asDynamic().wireframe = vision.getPropertyValue(
                     SolidMaterial.MATERIAL_WIREFRAME_KEY,
                     inherit = true,
                 )?.boolean ?: false
-                material.needsUpdate = true
             }
             else -> console.warn("Unrecognized material property: $propertyName")
         }
+        material.needsUpdate = true
     }
 }

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

@@ -2,6 +2,7 @@ package space.kscience.visionforge.solid.three
 
 import info.laht.threekt.core.BufferGeometry
 import info.laht.threekt.core.Layers
+import info.laht.threekt.core.Object3D
 import info.laht.threekt.external.controls.OrbitControls
 import info.laht.threekt.materials.Material
 import info.laht.threekt.math.Vector3
@@ -32,3 +33,12 @@ internal fun Any.dispose() {
 }
 
 public fun Layers.check(layer: Int): Boolean = (mask shr (layer) and 0x00000001) > 0
+
+internal fun Object3D.takeIfMesh(): Mesh? {
+    val d = asDynamic()
+    return if(d.isMesh as Boolean){
+        d.unsafeCast<Mesh>()
+    } else {
+        null
+    }
+}