rod.vfx.td Posted February 18, 2018 Share Posted February 18, 2018 (edited) Hello guys! I have a math problem, i need scale circles with sop solver, but i need scales linearly, but for each iteraction (frame) scaling acts exponentially. i tried use some formulation on transform inside sop solver with “log()” but with no sucess… what i need is circles scaling equidistantly, so i need some trick to scale linearly. and yes, need reside inside a sop solver. any ideas? attached a image showing above the problem, and below (manually made) what i need output… thanks in advance. Edited February 18, 2018 by rod.vfx.td Quote Link to comment Share on other sites More sharing options...
Noobini Posted February 18, 2018 Share Posted February 18, 2018 (edited) try this ? LinearRings.hipnc (note that it could have been easily done with just a polyextrude>inset>divisions....but I guess you have reason to use a solver SOP instead so I tried solver SOP) Edited February 18, 2018 by Noobini Quote Link to comment Share on other sites More sharing options...
Gorrod Posted February 18, 2018 Share Posted February 18, 2018 maybe try this out scale_circle.hipnc Quote Link to comment Share on other sites More sharing options...
rod.vfx.td Posted February 18, 2018 Author Share Posted February 18, 2018 2 hours ago, Gorrod said: maybe try this out scale_circle.hipnc thanks, very interesting solution! but how to scale only in x and z? i tried modify your settings, but the result was a cross, not a circle... scaling in xyz, result incoming geometry (a oscillating waveform circle) turn an sphere... i need only a concentric circles (x and z scaling). again, thanks in advance! Quote Link to comment Share on other sites More sharing options...
rod.vfx.td Posted February 18, 2018 Author Share Posted February 18, 2018 3 hours ago, Noobini said: try this ? LinearRings.hipnc (note that it could have been easily done with just a polyextrude>inset>divisions....but I guess you have reason to use a solver SOP instead so I tried solver SOP) thanks! but for my user case i can't use polyextrude inset, i really need scale lineraly the incoming geometry... (a oscillating waveform circle) Quote Link to comment Share on other sites More sharing options...
Gorrod Posted February 19, 2018 Share Posted February 19, 2018 (edited) I don't exactly know what geometry you're dealing with, but I tried some different ones and also restricted the scaling to only x and z here: scale_circle_2.hipnc Edited February 19, 2018 by Gorrod Quote Link to comment Share on other sites More sharing options...
satoru Posted February 19, 2018 Share Posted February 19, 2018 (edited) If you connect Transform SOP to Prev_Frame, It scales Linearly. linear_scale.hipnc Edited February 19, 2018 by satoru Quote Link to comment Share on other sites More sharing options...
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