arifakca Posted January 17, 2015 Share Posted January 17, 2015 hola, i'm copying box and a sphere to particles and using copy stamp in order to randomize their scale. (rand($PT+215)) i'm watching my particles as they travel ,their point numbers are changing. so my expression returns diffrent result at every frame , so overall effect is look jittering. any idea how to fix? h14_jittering_particlescale.hipnc Quote Link to comment Share on other sites More sharing options...
Georgie Posted January 17, 2015 Share Posted January 17, 2015 http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=11643&view=previous&sid=c8de2e47414db66f5ceaf6adfb933087 you can use $ID instead Cheers ! Quote Link to comment Share on other sites More sharing options...
arifakca Posted January 17, 2015 Author Share Posted January 17, 2015 thnks Georgie, i tried @id i@id @id $id except $ID i'm still confused about channel expressions when we need to put $ or not, like $CD or $Cr or CR i'm doing method of trial and error. Quote Link to comment Share on other sites More sharing options...
old school Posted January 18, 2015 Share Posted January 18, 2015 You use @ to work with variables in Group parameter fields and in Wrangle fields where you are writing vex. Use $ to work with variables in SOP parameters directly (excluding group parameters) where you are using hscript. Quote Link to comment Share on other sites More sharing options...
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