starting to load and render .vrm

.idea/inspectionProfiles/Project_Default.xml

@@ -1,6 +1,9 @@
 <component name="InspectionProjectProfileManager">
   <profile version="1.0">
     <option name="myName" value="Project Default" />
+    <inspection_tool class="AutoCloseableResource" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="METHOD_MATCHER_CONFIG" value="java.util.Formatter,format,java.io.Writer,append,com.google.common.base.Preconditions,checkNotNull,org.hibernate.Session,close,java.io.PrintWriter,printf,java.io.PrintStream,printf,org.lwjgl.assimp.Assimp,aiImportFile" />
+    </inspection_tool>
     <inspection_tool class="ClassCanBeRecord" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
   </profile>
 </component>

com/danitheskunk/skunkworks/BaseGame.java

@@ -6,7 +6,7 @@ import com.danitheskunk.skunkworks.audio.nodes.Mixer;
 import com.danitheskunk.skunkworks.audio.nodes.Node;
 import com.danitheskunk.skunkworks.audio.nodes.SamplePlayer;
 import com.danitheskunk.skunkworks.gfx.IRenderContext;
-import com.danitheskunk.skunkworks.gfx.IRenderContext3D;
+import com.danitheskunk.skunkworks.gfx.threedee.IRenderContext3D;
 import com.danitheskunk.skunkworks.gfx.ITexture;
 import com.danitheskunk.skunkworks.gfx.font.IFont;
 import com.danitheskunk.skunkworks.nodes.NodeRoot;

com/danitheskunk/skunkworks/IWindow.java

@@ -2,6 +2,7 @@ package com.danitheskunk.skunkworks;
 
 import com.danitheskunk.skunkworks.gfx.*;
 import com.danitheskunk.skunkworks.gfx.font.IFont;
+import com.danitheskunk.skunkworks.gfx.threedee.IRenderContext3D;
 
 import java.util.List;
 

com/danitheskunk/skunkworks/Test3D.java

@@ -1,10 +1,44 @@
 package com.danitheskunk.skunkworks;
 
-import com.danitheskunk.skunkworks.gfx.IRenderContext3D;
+import com.danitheskunk.skunkworks.gfx.threedee.IRenderContext3D;
+import com.danitheskunk.skunkworks.gfx.threedee.Mesh;
+import org.lwjgl.assimp.AIMesh;
+import org.lwjgl.assimp.Assimp;
 
 public class Test3D extends BaseGame {
+	private Mesh[] meshes;
 	public Test3D() {
 		super(new Vec2i(1920, 1080), "Skunkworks 3d test");
+		System.out.printf("assimp version: %d.%d.%d\n",
+			Assimp.aiGetVersionMajor(),
+			Assimp.aiGetVersionMinor(),
+			Assimp.aiGetVersionPatch()
+		);
+		var path = "C:\\stream\\models\\Dani.glb";
+		var bytes = engine.loadBytes(path);
+		var flags = Assimp.aiProcess_Triangulate;
+		flags |= Assimp.aiProcess_OptimizeGraph;
+		flags |= Assimp.aiProcess_PreTransformVertices;
+		//flags |= Assimp.aiProcess_OptimizeMeshes;
+		//flags |= Assimp.aiProcess_Debone;
+		var ai = Assimp.aiImportFile(path, flags);
+		if(ai == null) {
+			throw new RuntimeException("couldn't load model because: " +
+				Assimp.aiGetErrorString());
+		}
+		var numMeshes = ai.mNumMeshes();
+		var meshespb = ai.mMeshes();
+		meshes = new Mesh[numMeshes];
+		int faces = 0;
+		for(int i = 0; i < numMeshes; ++i) {
+			var aiMesh = AIMesh.create(meshespb.get(i));
+			var mesh = Mesh.fromAIMesh(aiMesh);
+			meshes[i] = mesh;
+			System.out.println(aiMesh.mNumFaces());
+			faces += aiMesh.mNumFaces();
+		}
+
+		System.out.printf("numMeshes: %d, faces: %d\n", numMeshes, faces);
 	}
 
 	static public void main(String[] args) {
@@ -13,11 +47,15 @@ public class Test3D extends BaseGame {
 
 	@Override
 	protected void render3D(IRenderContext3D rc) {
-		rc.renderTriangle(new Vec3f(-10, -10, 0),
-			new Vec3f(10, -10, 0),
-			new Vec3f(10, 10, -1)
-
-
+		for(int i = 0; i < meshes.length; ++i) {
+			rc.renderMesh(meshes[i]);
+		}
+		/*
+		rc.renderTriangle(new Vec3f(-10, -10, 1),
+			new Vec3f(10, -10, 1),
+			new Vec3f(10, 10, 1)
 		);
+		 */
+
 	}
 }

com/danitheskunk/skunkworks/Vec3i.java

@@ -0,0 +1,25 @@
+package com.danitheskunk.skunkworks;
+
+public class Vec3i {
+	public static Vec3i ONE = new Vec3i(1, 1, 1);
+	public static Vec3i ZERO = new Vec3i(0, 0, 0);
+	private final int x, y, z;
+
+	public Vec3i(int x, int y, int z) {
+		this.x = x;
+		this.y = y;
+		this.z = z;
+	}
+
+	public int getX() {
+		return x;
+	}
+
+	public int getY() {
+		return y;
+	}
+
+	public int getZ() {
+		return z;
+	}
+}

com/danitheskunk/skunkworks/backends/gl/RenderContext3D.java

@@ -1,7 +1,8 @@
 package com.danitheskunk.skunkworks.backends.gl;
 
 import com.danitheskunk.skunkworks.Vec3f;
-import com.danitheskunk.skunkworks.gfx.BaseRenderContext3D;
+import com.danitheskunk.skunkworks.gfx.threedee.BaseRenderContext3D;
+import com.danitheskunk.skunkworks.gfx.threedee.Mesh;
 
 import static org.lwjgl.opengl.GL46.*;
 
@@ -22,4 +23,19 @@ public class RenderContext3D extends BaseRenderContext3D {
 
 		glEnd();
 	}
+
+	@Override
+	public void renderMesh(Mesh mesh) {
+		glBegin(GL_TRIANGLES);
+		for(int i = 0; i < mesh.getTriangleCount(); ++i) {
+			var tri = mesh.getTriangle(i);
+			var p1 = mesh.getVertex(tri.getX());
+			var p2 = mesh.getVertex(tri.getY());
+			var p3 = mesh.getVertex(tri.getZ());
+			glVertex3d(p1.getX(), p1.getY(), p1.getZ());
+			glVertex3d(p2.getX(), p2.getY(), p2.getZ());
+			glVertex3d(p3.getX(), p3.getY(), p3.getZ());
+		}
+		glEnd();
+	}
 }

com/danitheskunk/skunkworks/backends/gl/Window.java

@@ -2,7 +2,7 @@ package com.danitheskunk.skunkworks.backends.gl;
 
 import com.danitheskunk.skunkworks.*;
 import com.danitheskunk.skunkworks.gfx.IRenderContext;
-import com.danitheskunk.skunkworks.gfx.IRenderContext3D;
+import com.danitheskunk.skunkworks.gfx.threedee.IRenderContext3D;
 import com.danitheskunk.skunkworks.gfx.ITexture;
 import com.danitheskunk.skunkworks.gfx.Image;
 import org.lwjgl.glfw.GLFWErrorCallback;

com/danitheskunk/skunkworks/gfx/BaseRenderContext3D.java

@@ -1,5 +0,0 @@
-package com.danitheskunk.skunkworks.gfx;
-
-abstract public class BaseRenderContext3D implements IRenderContext3D {
-
-}

com/danitheskunk/skunkworks/gfx/threedee/BaseRenderContext3D.java

@@ -0,0 +1,7 @@
+package com.danitheskunk.skunkworks.gfx.threedee;
+
+import com.danitheskunk.skunkworks.gfx.threedee.IRenderContext3D;
+
+abstract public class BaseRenderContext3D implements IRenderContext3D {
+
+}

com/danitheskunk/skunkworks/gfx/threedee/IRenderContext3D.java

@@ -1,7 +1,8 @@
-package com.danitheskunk.skunkworks.gfx;
+package com.danitheskunk.skunkworks.gfx.threedee;
 
 import com.danitheskunk.skunkworks.Vec3f;
 
 public interface IRenderContext3D {
 	void renderTriangle(Vec3f p1, Vec3f p2, Vec3f p3);
+	void renderMesh(Mesh mesh);
 }

com/danitheskunk/skunkworks/gfx/threedee/Mesh.java

@@ -0,0 +1,69 @@
+package com.danitheskunk.skunkworks.gfx.threedee;
+
+import com.danitheskunk.skunkworks.Vec3f;
+import com.danitheskunk.skunkworks.Vec3i;
+import org.lwjgl.assimp.AIMesh;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Mesh {
+	private List<Vec3i> triangles;
+	private List<Vec3f> vertices;
+
+	public Mesh() {
+		vertices = new ArrayList<>();
+		triangles = new ArrayList<>();
+	}
+
+	public static Mesh fromAIMesh(AIMesh aiMesh) {
+		var mesh = new Mesh();
+
+		var numVertices = aiMesh.mNumVertices();
+		var numFaces = aiMesh.mNumFaces();
+
+		var vertexBuffer = aiMesh.mVertices();
+		var faceBuffer = aiMesh.mFaces();
+
+		while(vertexBuffer.remaining() > 0) {
+			var vert = vertexBuffer.get();
+			mesh.addVertex(new Vec3f(vert.x(), vert.y(), vert.z()));
+		}
+
+		while(faceBuffer.remaining() > 0) {
+			var face = faceBuffer.get();
+			if(face.mNumIndices() != 3) {
+				throw new RuntimeException("skunkworks only supports " +
+					"triangles currently");
+			}
+			var indices = face.mIndices();
+			mesh.addTriangle(indices.get(0), indices.get(1), indices.get(2));
+		}
+		return mesh;
+	}
+
+	public void addTriangle(int v1, int v2, int v3) {
+		triangles.add(new Vec3i(v1, v2, v3));
+	}
+
+	public void addVertex(Vec3f vertex) {
+		vertices.add(vertex);
+	}
+
+	public int getTriangleCount() {
+		return triangles.size();
+	}
+
+	public int getVertexCount() {
+		return vertices.size();
+	}
+
+	public Vec3f getVertex(int idx) {
+		return vertices.get(idx);
+	}
+
+	public Vec3i getTriangle(int idx) {
+		return triangles.get(idx);
+	}
+
+}