[virtual]
Save shape to a stream.
Reimplemented from FX::FXObject.
Reimplemented in FX::FXGLCone, FX::FXGLCube, FX::FXGLCylinder, FX::FXGLSphere, FX::FXGLTriangleMesh, FX::FXGLVertices, and FX::FXGLCircle.