Crop node

[Black burst]

A node that functions the same as keystone except cropping rather than distorting would be handy. I have got iphone apps that have 2 xy controllers on the touch screen which work well with keystone, and crop would be sweet too.

[Black burst]

how does anyone else crop when they are mapping with vjo?

[VJ-Jean-Luc]

would you want simple cropping (just the top/sides being moved), or more complex cropping (full corner access as in the keystone)?

[Meierhans]

Thats a good question. I just started with mapping, did build several branches with big inputs on top to take just a region out of frame, then run the keystones in these branches just at the resolution of this part of the picture to save CPU. Finally add things together again with several ML Advanced that exactly take the input size of the biginput from before... This is not really elegant but works for simple shapes. If mangle would just do a proper bilinear resize, i think it would be much better suitable as you could have a bunch of keystones in one node (as script) which are all taking small parts out of the picture.

[Black burst]

Something exactly like the keystone plug would be great, it would practically be a real-time mask around the static image. Mainly because mapping is mainly just texturing things with video and if you use keystone it affects the texture. There's been heaps of times where I want a particular texture on something and then it ends up stretched and deformed. As justin pointed out there are ways around it but for mapping applications you don't often have a lot of time when you get there to build the stuff.

[VJ-Jean-Luc]

ok, i'll look into it