Asteroid progress

core/src/mindustry/graphics/g3d/MatMesh.java

@@ -0,0 +1,22 @@
+package mindustry.graphics.g3d;
+
+import arc.math.geom.*;
+
+//TODO maybe this is a bad idea
+/** A GenericMesh that wraps and applies an additional transform to a generic mesh. */
+public class MatMesh implements GenericMesh{
+    private static final Mat3D tmp = new Mat3D();
+
+    GenericMesh mesh;
+    Mat3D mat;
+
+    public MatMesh(GenericMesh mesh, Mat3D mat){
+        this.mesh = mesh;
+        this.mat = mat;
+    }
+
+    @Override
+    public void render(Mat3D projection, Mat3D transform){
+        mesh.render(projection, tmp.set(transform).mul(mat));
+    }
+}