forked from kscience/visionforge
Extruded shape demo
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@ -9,6 +9,9 @@ import kotlinx.coroutines.GlobalScope
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import kotlinx.coroutines.delay
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import kotlinx.coroutines.isActive
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import kotlinx.coroutines.launch
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import kotlin.math.PI
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import kotlin.math.cos
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import kotlin.math.sin
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import kotlin.random.Random
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@ -61,13 +64,24 @@ class ThreeDemoApp : ApplicationBase() {
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}
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}
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demo("jsroot", "JSROOT cube"){
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demo("jsroot", "JSROOT cube") {
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jsRootGeometry {
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y = 110.0
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shape = box(50, 50, 50)
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color(12285)
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}
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}
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demo("extrude", "extruded shape") {
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extrude {
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shape {
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polygon(8, 50)
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}
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for(i in 0..100) {
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layer(i*5, 20*sin(2*PI/100*i), 20*cos(2*PI/100*i))
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}
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}
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}
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}
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@ -50,9 +50,9 @@ class ThreeDemoGrid(meta: Meta) : AbstractPlugin(meta), OutputManager {
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gridRoot.append {
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span("border") {
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div("col-4") {
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h2 { +(meta["title"].string ?: name.toString()) }
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output.attach(div { id = "output-$name" }){300}
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hr()
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output.attach(div { id = "output-$name" })
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h2 { +(meta["title"].string ?: name.toString()) }
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}
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}
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}
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@ -1,45 +1,123 @@
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package hep.dataforge.vis.spatial
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import hep.dataforge.meta.*
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import hep.dataforge.names.toName
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import hep.dataforge.vis.common.DisplayLeaf
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import hep.dataforge.vis.common.DisplayObject
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import hep.dataforge.vis.common.DisplayObjectList
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import kotlin.math.PI
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import kotlin.math.cos
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import kotlin.math.sin
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typealias Shape2D = List<Point2D>
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data class Layer(val z: Number, val x: Number = 0.0, val y: Number = 0.0, val scale: Number = 1.0)
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class Shape2DBuilder {
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private val list = ArrayList<Point2D>()
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class Extruded(parent: DisplayObject?, meta: Meta) : DisplayLeaf(parent, meta) {
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fun point(x: Number, y: Number) {
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list.add(Point2D(x, y))
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}
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val shape
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get() = shape(properties["shape"] ?: error("Shape not defined"))
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fun build(): Shape2D = list
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}
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val layers
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get() = properties.getAll("layer").values.map {
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layer(it.node ?: error("layer item is not a node"))
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}
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companion object {
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const val TYPE = "geometry.3d.extruded"
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private fun shape(item: MetaItem<*>): Shape2D {
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return item.node?.getAll("xyPoint".toName())?.map { (_, value) ->
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Point2D(value.node["x"].number ?: 0, value.node["y"].number ?: 0)
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} ?: emptyList()
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}
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private fun layer(meta: Meta): Layer {
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val x by meta.number(0.0)
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val y by meta.number(0.0)
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val z by meta.number { error("z is undefined in layer") }
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val scale by meta.number(1.0)
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return Layer(z, x, y, scale)
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}
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fun Shape2DBuilder.polygon(vertices: Int, radius: Number) {
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require(vertices > 2) { "Polygon must have more than 2 vertices" }
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val angle = 2 * PI / vertices
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for (i in 0 until vertices) {
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point(radius.toDouble() * cos(angle * i), radius.toDouble() * sin(angle * i))
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}
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}
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class Layer(override val config: Config) : Specific {
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var z by number(0.0)
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var x by number(0.0)
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var y by number(0.0)
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var scale by number(1.0)
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companion object : Specification<Layer> {
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override fun wrap(config: Config): Layer = Layer(config)
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}
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}
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//class Layer(val z: Number, val x: Number = 0.0, val y: Number = 0.0, val scale: Number = 1.0)
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class Extruded(parent: DisplayObject?, meta: Meta) : DisplayLeaf(parent, meta), Shape {
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val shape
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get() = properties.getAll("shape.point").map { (_, value) ->
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Point2D(value.node["x"].number ?: 0, value.node["y"].number ?: 0)
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}
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fun shape(block: Shape2DBuilder.() -> Unit) {
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val points = Shape2DBuilder().apply(block).build().map { it.toMeta() }
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properties["shape.point"] = points
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}
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val layers
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get() = properties.getAll("layer").values.map {
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Layer.wrap(it.node ?: error("layer item is not a node"))
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}
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fun layer(z: Number, x: Number = 0.0, y: Number = 0.0, scale: Number = 1.0): Layer {
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val layer = Layer.build {
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this.x = x
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this.y = y
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this.z = z
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this.scale = scale
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}
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properties.append("layer", layer)
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return layer
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}
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override fun <T : Any> GeometryBuilder<T>.buildGeometry() {
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val shape: Shape2D = shape
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if (shape.size < 3) error("Extruded shape requires more than points per layer")
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/**
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* Expand the shape for specific layers
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*/
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val layers: List<List<Point3D>> = layers.map { layer ->
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shape.map { (x, y) ->
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val newX = layer.x.toDouble() + x.toDouble() * layer.scale.toDouble()
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val newY = layer.y.toDouble() + y.toDouble() * layer.scale.toDouble()
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Point3D(newX, newY, layer.z)
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}
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}
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if (layers.size < 2) error("Extruded shape requires more than one layer")
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var lowerLayer = layers.first()
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var upperLayer: List<Point3D>
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for (i in (1 until layers.size)) {
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upperLayer = layers[i]
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for (j in (0 until shape.size - 1)) {
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//counter clockwise
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face4(
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lowerLayer[j],
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lowerLayer[j + 1],
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upperLayer[j + 1],
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upperLayer[j]
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)
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}
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// final face
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face4(
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lowerLayer[shape.size - 1],
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lowerLayer[0],
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upperLayer[0],
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upperLayer[shape.size - 1]
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)
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lowerLayer = upperLayer
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}
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}
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companion object {
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const val TYPE = "geometry.3d.extruded"
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}
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}
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fun DisplayObjectList.extrude(meta: Meta = EmptyMeta, action: Extruded.() -> Unit = {}) =
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Extruded(this, meta).apply(action).also { addChild(it) }
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@ -6,7 +6,12 @@ import hep.dataforge.meta.MetaRepr
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import hep.dataforge.meta.buildMeta
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import hep.dataforge.vis.common.DisplayObject
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data class Point2D(val x: Number, val y: Number)
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data class Point2D(val x: Number, val y: Number): MetaRepr{
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override fun toMeta(): Meta = buildMeta {
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"x" to x
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"y" to y
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}
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}
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data class Point3D(val x: Number, val y: Number, val z: Number) : MetaRepr {
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override fun toMeta(): Meta = buildMeta {
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