Generate Normal Data for All Meshes of 3D Model

Aspose.3D for Java API has support of generating normal data for all meshes of 3D model (without the normal data).

Generate Normal Data for All Meshes of 3DS Model

The generateNormal method exposed by the PolygonModifier class can be used to generate normal data for all meshes in a 3DS file. If VertexElementSmoothingGroup element was defined in the mesh, the generated normal data will get smoothed by the VertexElementSmoothingGroup.

Programming Sample

This code example loads a 3DS file, visit all nodes and create normal data for all meshes.

// The path to the documents directory.
String MyDir = RunExamples.getDataDir();
// Load a 3ds file, 3ds file doesn't have normal data, but it has smoothing group
Scene s = new Scene(MyDir + "camera.3ds");
// Visit all nodes and create normal data for all meshes
s.getRootNode().accept(new NodeVisitor() {
    @Override
    public boolean call(Node node) {
        Mesh mesh = (Mesh)node.getEntity();
        if (mesh != null)
        {
            VertexElementNormal normals = PolygonModifier.generateNormal(mesh);
            mesh.addElement(normals);
        }
        return true;
    }
});