pclaes Posted February 28, 2008 Share Posted February 28, 2008 (edited) Hi, I would like to implement a way of mapping color values to the lifespan of the particles without using the "ramp" in the color pop. I am sure this can be done. So far I have managed to map the color values and have the lifespan drive it, but the sampling is uniform. I would like to integrate the "percent" parameters on my MASTERCONTROL node, but am unsure where to attach this in. I am guessing there is a better way than using sops. Probably with chops, but I have no experience with chops yet. The reason why I go through this effort is because I want to integrate a simplified ramp control into a digital asset and so far there is no ramp parameter that allows me to hook into the ramp values of the color pop. any ideas? Thanks! lifespan_color_mapping_01.hip Edited February 28, 2008 by pclaes Quote Link to comment Share on other sites More sharing options...
edward Posted February 28, 2008 Share Posted February 28, 2008 How about embedding a Ramp COP? Then you could promote those parameters. To do the ramp lookup, you can use the pic() expression. Quote Link to comment Share on other sites More sharing options...
andrewlowell Posted February 28, 2008 Share Posted February 28, 2008 Here's a simplified version of what I'll be going over for the CHOPs class on the 8th. This uses a method similar to afterburn that sets ranges based on low, and high values .. with a curve ... in this case a user-defined animation curve; in the middle. The color is just animated. The CHOPs network is useful for aligning and configuring the user input before it's read by the fx system. interactive_pops_chops_lookup.zip Quote Link to comment Share on other sites More sharing options...
pclaes Posted February 28, 2008 Author Share Posted February 28, 2008 Thank you both, I will try out both solutions. I wish sooo much I could be there for that class... but I'm at the other side of the ocean . The afterburn ramps where indeed what I had in mind. I have been looking into the "Heavy Smoke" example on the Fx Shelf by Peter Bowmar. And he has got a chops network inside with a vop chop that creates linear or smooth interpolation. I have been considering putting down five of those and multiplying them with the respective values. This would be very non-procedural though. So I will try out your suggestions first. Quote Link to comment Share on other sites More sharing options...
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