Generate round blurred masks
Apr 09 2013 | 2:56 pm
Hello all,
I would like to generate round ellipses in jitter with a blurred edge, similar to this:
http://photobatch.wdfiles.com/local--files/action-mask/mask_round_256x256.jpg
The goal would be to have several of these in my image that I could control dynamically (Size and location) the goal is to simulate follow spots on stage. What would be the best approach for this ? I did a quick hack of this with vizzie and a png but I'd like a more solid patch. What would be best between jit.mgraphics or jit.gl.sketch ?
Thanks !
- Apr 09 2013 | 6:08 pmjit.gl.slab.gauss6x abstraction is your friend. whether you use jit.mgraphics or jit.gl.sketch is entirely your preference (maybe depending on if you want to use pixels, or gl-world units):
- Apr 09 2013 | 7:11 pmThanks ! This seems to be exactly what I'm looking for.If I wanted to have several of these circles in the same image and control the position and scale of those circle, I assume the best is to have several videoplanes and control the anchor and scale attributes of the videoplane object ?
- Apr 09 2013 | 7:17 pmyeah, that would be my suggestion. also check out jit.gl.multiple for this.you have to be careful with the gauss-blur, as it can be quite expensive if not managed properly. you may also want to lower the dims of your mgraphics matrix, and only output when changed, depending on your patch needs.
- Apr 09 2013 | 7:33 pmHmm the problem I see with this is that since the background of each white circle is black, if I have multiple videoplanes the background will obscure the other white spots..
- Apr 09 2013 | 9:23 pmyou must enable @blend_enable and set the @blend screen:
- Apr 10 2013 | 12:55 amThanks !
