Hi Klemen The distortion of the shape of the image on the wall is often referred to as parallax by the folks that work with projectors and cameras and images.
In EMC2 and machine tool terms we would think of it as a non-trivial kinematic and you are into the very recent post by Jeff. The X, Y, and Z axes of your "machine" are not square to each other. In fact there is interaction between them depending upon where the spot (tool) is and the angle of the tool to the projection plane. If the laser were moving about in X and Y so that it's projection angle was fixed you would remove one of the two sources of parallax. The other source of parallax is the angle between the XY plane of the laser motion and the XY plane of the screen or wall that the laser light is hitting. Fascinating problem to think about but I have no instant, easy solution that can be plugged into HAL. Rayh On Sat, 2007-12-01 at 06:13 -0800, Klemen Dovrtel wrote: > My second problem is, that I think the position signal > from emc should be modified a bit ( > hight_on_the_wall=constant*tangens(emc_output signal > ), because otherwise the "drawing" on the wall will be > stretched at the sides. How can i achieve this? ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
