Generate Normal Data for All Meshes in a 3D File

Using Aspose.3D for .NET, developers can generate normal data for all meshes in any 3D model (without the normal data).

Generate Normal Data for All Meshes in a 3DS File

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.

// For complete examples and data files, please go to https://github.com/aspose-3d/Aspose.3D-for-.NET

            // Load a 3ds file, 3ds file doesn't have normal data, but it has smoothing group
            Scene s = new Scene(RunExamples.GetDataFilePath("camera.3ds"));
            // Visit all nodes and create normal data for all meshes
            s.RootNode.Accept(delegate(Node n)
            {
                Mesh mesh = n.GetEntity<Mesh>();
                if (mesh != null)
                {
                    VertexElementNormal normals = PolygonModifier.GenerateNormal(mesh);
                    mesh.VertexElements.Add(normals);
                }
                return true;
            });