On Wednesday 13 April 2005 21:12, Joao S. O. Bueno Calligaris wrote: > On Tuesday 12 April 2005 13:06, JS wrote: Let's see how far I can MAP these SVG comp. modes to GIMPs: 1) clear: Not available as a composite mode. One might just turn the layers visibility off. 2) src:No mode. Turn off the visibility of the dst layer. 3) dst: No mode. Turn off the visibility of the src layer. 4) src_over: mode "behind" 5) dst_over: mode "normal" 6) src_in: no equivalent mode. There would be needed another (custom) mode mode that would multiply or "lighten only" the alpha component, and ignored the dst color. 7) drc_in: no equivalent mode. There would be needed another mode that would multiply or "lighten only" the alpha component, and ignored the src color. 8) src_out: no equivalent mode. There would be needed another mode that would multiply or "lighten only" srca by the complement of dsta, and ignored the dst color. 9) dst_out: no equivalent mode. There would be needed another mode that would multiply or "lighten only" srca by the complement of dsta, and ignored the dst color. 10) src_atop: no equivalent mode. There would be needed another mode that would be like the current behind mode, but use dsta instead of srca 11) drt_atop: no equivalent mode. There would be needed another mode that would be like the current normal mode, but use srca to replace dsta. 12) src_atop: no equivalent mode. A XOR_alpha mode would be needed to emulate this. ------------ Apart of the nice code I pointed in the other e-mail, I have a current python script is flexible enough to easily do these compositions. As a plug-in, however, it doesn't operate in real time: you have to draw you layers, and call the plug-in to generate a resulting layer from the operation. If you are interested I can have it dealing with these 12 modes in a little more than an hour. JS -><-
