Hi there. As part of a much larger patch, I wish to make a small drawing patch, where you draw with the mouse, and a shape appears. I think to do this, I'll use a lot of curves, that use dynamically created curve patches, or is there a better way? (I've got this working more or less). Then I want to scan the drawing, which is a small area of the gem screen, and store it. I don't know how to do this simply (though you can interrogate a pixel). Then store it? - pd doesn't have 2d arrays. Or make a small jpg - someone has shown how to do that. Any help appreciated...

@RolandTpd amazing how posting makes me solve it, more or less. SO I found someones' etch_a_sketch, so that you rebang the gemhead to render a new frame to draw a new point. Ok. solved 2d array - duh! Not sure about scanning a section of screen and filing it away however.

how did you solve your problems? would be nice to see your patch. perhaps this is a way to "scan" the drawing: http://forum.pdpatchrepo.info/topic/9101/save-gem-window-content-as-image