private void RotateNegativeZ(object sender, EventArgs e)
{
cubeZ -= 5;
labelCrZ.Text = cubeZ.ToString();
YLScsDrawing.Drawing3d.Quaternion q = new YLScsDrawing.Drawing3d.Quaternion();
q.FromAxisAngle(new YLScsDrawing.Drawing3d.Vector3d(0, 0, 1), -5 * Math.PI / 180.0);
cub.RotateAt(cub.Center, q);
GetLocalAxis();
Invalidate();
}
private void RotatePositiveX(object sender, EventArgs e)
{
cubeX += 5;
labelCrX.Text = cubeX.ToString();
YLScsDrawing.Drawing3d.Quaternion q = new YLScsDrawing.Drawing3d.Quaternion();
q.FromAxisAngle(new YLScsDrawing.Drawing3d.Vector3d(1, 0, 0), 5 * Math.PI / 180.0);
cub.RotateAt(cub.Center, q);
GetLocalAxis();
Invalidate();
}