Node node = leaf3D.getNode();
CompilerHelper.compile(node);
Shape3D leafShape3D = (Shape3D) node;
// test position and geometry
Geometry leafGeometry = leafShape3D.getGeometry();
assertTrue(leafGeometry instanceof TriangleArray);
TriangleArray leafTriangle = (TriangleArray) leafGeometry;
assertEquals(3, leafTriangle.getVertexCount());
Point3d actualStartPoint = new Point3d();