{"id":785,"date":"2024-02-17T07:55:41","date_gmt":"2024-02-17T15:55:41","guid":{"rendered":"http:\/\/fx-td.com\/houdiniandchill\/?p=785"},"modified":"2024-02-17T08:03:12","modified_gmt":"2024-02-17T16:03:12","slug":"archived-post-by-waffleboytom-7","status":"publish","type":"post","link":"http:\/\/fx-td.com\/houdiniandchill\/2024\/02\/17\/archived-post-by-waffleboytom-7\/","title":{"rendered":"Archived post by waffleboytom"},"content":{"rendered":"
\n

this works but I feel like it’s a hack<\/p>\n

“`py node = hou.pwd() stage = node.editableStage()
\nprim = stage.GetPrimAtPath(‘\/geo\/points_0’)
\nptsattrib = prim.GetAttribute(‘points’)
\nptsarray = prim.GetAttribute(‘points’).Get()
\nptsattrib.Set(ptsarray[::10]) “` weirdly enough the python version doesn’t seem to affect the HoudiniDataId while the vex version sets it to -1 which makes me go hmmmmm<\/p>\n

“`py node = hou.pwd() stage = node.editableStage()
\nprim = stage.GetPrimAtPath(‘\/geo\/points_0’)
\nattribs = prim.GetAttributes()
\nfor attrib in attribs:
\n interp = attrib.GetMetadata(“interpolation”)
\n if interp == “vertex”:
\n valarray = attrib.Get() attrib.Set(valarray[::10]) “` this makes more sense as if you have more primvars on your points you would wanna slice those arrays as well<\/p>\n

the 10 here drives the percentage of points you want, setting it to 10 gives me 10 percent of my original pointcount<\/p>\n

to get 5% you would do 20 because 100\/20<\/p>\n

“`py node = hou.pwd() stage = node.editableStage()
\nfor prim in stage.Traverse():
\n if not prim.GetTypeName() == ‘Points’:
\n continue
\n attribs = prim.GetAttributes()
\n for attrib in attribs:
\n interp = attrib.GetMetadata(“interpolation”)
\n if interp == “vertex”:
\n valarray = attrib.Get() attrib.Set(valarray[::10]) “` here’s a version that will cull all your point clouds to keep only 10%. Might be slow if you have a large stage as I’m doing a stage traversal here<\/p>\n

this won’t work for an animated pointcloud though<\/p>\n

hold on<\/p>\n

right, here’s a file with a static point cloud, animated(time dependent), animated(time samples)<\/p>\n

Attachments in this post:
http:\/\/fx-td.com\/houdiniandchill\/wp-content\/uploads\/discord\/20245502\/17\/24\/image.png<\/a>
http:\/\/fx-td.com\/houdiniandchill\/wp-content\/uploads\/discord\/20245502\/17\/24\/waffles_cull_points_solaris.hip<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

this works but I feel like it’s a hack “`py node = hou.pwd() stage = node.editableStage() prim = stage.GetPrimAtPath(‘\/geo\/points_0’) ptsattrib = prim.GetAttribute(‘points’) ptsarray = prim.GetAttribute(‘points’).Get() ptsattrib.Set(ptsarray[::10]) “` weirdly enough the python version doesn’t seem to affect the HoudiniDataId while the vex version sets it to -1 which makes me go hmmmmm “`py node = hou.pwd() … Continue reading Archived post by waffleboytom<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[],"_links":{"self":[{"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/posts\/785"}],"collection":[{"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/comments?post=785"}],"version-history":[{"count":0,"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/posts\/785\/revisions"}],"wp:attachment":[{"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/media?parent=785"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/categories?post=785"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/fx-td.com\/houdiniandchill\/wp-json\/wp\/v2\/tags?post=785"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}