romanus Posted May 11, 2015 Share Posted May 11, 2015 Hi guys, Is it possible to display only a percentage of pre-calculated particles? In 3dsmax I use prt loader from thinkbox and it's really helpful when using millions of particles. You can scrub the viewport in real time understanding the motion of particles without the need for flipbook. Thanks, Rui Romano Quote Link to comment Share on other sites More sharing options...
ChristopherC Posted May 11, 2015 Share Posted May 11, 2015 One way could be to add a `Delete` node with a filter expression such as $PT % (1 / 0.2) == 0 where 0.2 would be your normalized percentage (equivalent to 20% here). Quote Link to comment Share on other sites More sharing options...
romanus Posted May 11, 2015 Author Share Posted May 11, 2015 hum, it seems that houdini has to read the file and then delete... so, it seems that it will become slower. But if i really need to have fast viewport display, I could use that expression and render to a new sequence, right? Thanks ChristopherC! Quote Link to comment Share on other sites More sharing options...
ChristopherC Posted May 11, 2015 Share Posted May 11, 2015 Oh right, you'd like to partially load the particles from a file—sorry, I should have checked what PRT Loader was before answering. I'll let someone more experienced reply then because I'm clueless That being said, I don't know if deleting particles after loading them will make your viewport much faster if you're displaying them as points. But it will definitely help if you're copy stamping some geometry onto them. Quote Link to comment Share on other sites More sharing options...
myke3d Posted March 25, 2017 Share Posted March 25, 2017 Hi romanus... after 2 years I remembered about this post and got this solution. Hope it fits you. Is fast. Cheers DeletePercentage.hipnc Quote Link to comment Share on other sites More sharing options...
Howitzer99 Posted November 14, 2018 Share Posted November 14, 2018 I just stumbled upon this, and wanted to say thanks Myke for adding the example file, the AW node works perfect! Quote Link to comment Share on other sites More sharing options...
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