public void spotLight(float red, float green, float blue,
                        float x, float y, float z,
                        float nx, float ny, float nz,
                        float angle, float concentration) {
    if (recorder != null) recorder.spotLight(red, green, blue, x, y, z, nx, ny, nz, angle, concentration);
    g.spotLight(red, green, blue, x, y, z, nx, ny, nz, angle, concentration);
  }