chrisperry05 Posted March 28, 2011 Share Posted March 28, 2011 Hi, I'm caching out some particle simulations and then bringing them back in via the file dop. I want to add trails to the points but as soon as the points start being deleted the pt numbers are constantly changing. Is there a way that i can force the point numbers to take on the particle id? Or a way to tell the trail sop to use $ID rather than $PT? Thanks Quote Link to comment Share on other sites More sharing options...
sanostol Posted March 28, 2011 Share Posted March 28, 2011 (edited) maybe this works for you. I tend to use split in pops and addSOP to generate polys per parent attribute trailwithadd.hip Edited March 28, 2011 by sanostol Quote Link to comment Share on other sites More sharing options...
chrisperry05 Posted March 28, 2011 Author Share Posted March 28, 2011 Hi, Thanks for the reply, i have been using that method to add trails but i was hoping there would be a way that i could use the trail sop instead just so that i could keep the .sim file sizes down rather than have to calculate extra particles for the trail. Thanks again for the reply though. Quote Link to comment Share on other sites More sharing options...
Div Posted March 28, 2011 Share Posted March 28, 2011 Use a trail sop and let the result type to preserve original. Then append a add sop and go to Polygons-> By group. set 'Add' to by attribute and set the attribute name to id... Quote Link to comment Share on other sites More sharing options...
chrisperry05 Posted March 28, 2011 Author Share Posted March 28, 2011 Awesome, thankyou. Quote Link to comment Share on other sites More sharing options...
chrisperry05 Posted March 28, 2011 Author Share Posted March 28, 2011 Hi, Thanks again fo rthe reply, when i go to render i'm getting glitches everynow and again as if the add sop is being set to "all points". Playing in the timeline it is absolutely fine but as soon as i render i start to get these glitches? Does anyone know why this would be, is it something to do with the order things are being calculated or something? Quote Link to comment Share on other sites More sharing options...
sanostol Posted March 28, 2011 Share Posted March 28, 2011 so many ways to do stuff, great Quote Link to comment Share on other sites More sharing options...
chrisperry05 Posted March 28, 2011 Author Share Posted March 28, 2011 Hey with regards to the glitches happening it seemed to be a problem with the caching. If i turn off caching on the dop network that contains the file dop it seems to be fine. Quote Link to comment Share on other sites More sharing options...
Macha Posted March 28, 2011 Share Posted March 28, 2011 Or you the sort sop with an expression. Quote Link to comment Share on other sites More sharing options...
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