[orx-mesh] Split MeshData types from orx-obj-loader

orx-mesh/src/commonMain/kotlin/MeshData.kt

@@ -0,0 +1,41 @@
+package org.openrndr.extra.objloader
+
+import kotlin.jvm.JvmRecord
+
+interface IMeshData {
+    val vertexData: IVertexData
+    val polygons: List<IIndexedPolygon>
+    fun triangulate(): IMeshData
+    fun flattenPolygons(): List<IPolygon>
+}
+
+@JvmRecord
+data class MeshData(
+    override val vertexData: VertexData,
+    override val polygons: List<IndexedPolygon>,
+) : IMeshData {
+    override fun triangulate(): MeshData {
+        return copy(polygons = polygons.flatMap { polygon -> polygon.triangulate(vertexData) })
+    }
+
+    override fun flattenPolygons(): List<Polygon> {
+        return polygons.map { ip ->
+            ip.toPolygon(vertexData)
+        }
+    }
+}
+
+
+data class MutableMeshData(
+    override val vertexData: MutableVertexData,
+    override val polygons: MutableList<IndexedPolygon>
+) : IMeshData {
+    override fun triangulate(): MutableMeshData {
+        return copy(polygons = polygons.flatMap { it.triangulate(vertexData) }.toMutableList())
+    }
+
+    override fun flattenPolygons(): List<Polygon> {
+        return polygons.map { it.toPolygon(vertexData) }
+
+    }
+}