snowshughes Posted September 30, 2020 Share Posted September 30, 2020 I'm looking for some guidance with an effect. I have a pyro simulation of some smoke hitting a floor and the collision is working fine. I want to take the collision information from the sim and pass it back to the floor geometry as a point attribute e.g. an attribute that is 0 when the sim starts but as soon as the smoke touches the floor the attribute changes to one. If anyone that could point me in the direction of how best to achieve this, I've tried to play around with the 'Gas Impact To Attribute' node and I could not work out how to properly wire it up. Thanks! SmokeCollision-01.hipnc Quote Link to comment Share on other sites More sharing options...
bunker Posted September 30, 2020 Share Posted September 30, 2020 You could transfer the volume density to the grid with the attributeToVolume SOP, or volumesample() in a wrangle. Quote Link to comment Share on other sites More sharing options...
snowshughes Posted September 30, 2020 Author Share Posted September 30, 2020 @bunker Thank you so much, such a simple solution. I thought there must be an easy way but I just couldn't find my way to it. Solution attached for anyone else interested. SmokeCollision-01.hipnc 1 Quote Link to comment Share on other sites More sharing options...
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