Show PointCloud

// 点群の表示
{
    gl.Begin( OpenGL.GL_POINTS );

    foreach ( var point in kinect.PointCloud ) {
        if ( (point.X == 0) && (point.Y == 0) && (point.Z == 0) ) {
            continue;
        }

        Vector3 v = new Vector3( point.X, point.Y, point.Z );
        if ( IsFloorClipPlane.IsChecked == true ) {
            v = Vector3.Transform( v, matrix );
        }

        gl.Color( point.R, point.G, point.B );
        gl.Vertex( v.X, v.Y, v.Z );
    }

    gl.End();
}