A few weeks ago I got stuck while writing a foot snapping tool — the snapping code I used to use didn’t work on the rigs we inherited because there were a lot of pivot changes. I tried a bunch of more elegant ways to fix this but ended up doing the old standby:<\/p>\n
Now, that solution wasn’t a satisfying one to me, so I kept looking for a better one.<\/p>\n Turns out there’s an easy fix. If you use getAttr<\/b> on a transform node’s .worldMatrix, you get back the proper 4×4 set of float values that represents its final position in world space. Afterwards you can set the matrix of another object using xform<\/b>. It’s pretty simple in either MEL or Python.<\/p>\n The MEL code is a bit ugly because of having to specifically reference each item in the array of floats, but it works. Here’s the Python equivalent. I keep it now as a button my shelf.<\/p>\n sel = ls(sl=True) A few weeks ago I got stuck while writing a foot snapping tool — the snapping code I used to use didn’t work on the rigs we inherited because there were a lot of pivot changes. I tried a bunch of more elegant ways to fix this but ended up doing the old standby: delete […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,13],"tags":[],"class_list":["post-74","post","type-post","status-publish","format-standard","hentry","category-3d","category-maya"],"_links":{"self":[{"href":"http:\/\/sugarandcyanide.com\/blog\/wp-json\/wp\/v2\/posts\/74","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/sugarandcyanide.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sugarandcyanide.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sugarandcyanide.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/sugarandcyanide.com\/blog\/wp-json\/wp\/v2\/comments?post=74"}],"version-history":[{"count":0,"href":"http:\/\/sugarandcyanide.com\/blog\/wp-json\/wp\/v2\/posts\/74\/revisions"}],"wp:attachment":[{"href":"http:\/\/sugarandcyanide.com\/blog\/wp-json\/wp\/v2\/media?parent=74"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sugarandcyanide.com\/blog\/wp-json\/wp\/v2\/categories?post=74"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sugarandcyanide.com\/blog\/wp-json\/wp\/v2\/tags?post=74"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}delete `orientConstraint`;
\ndelete `pointConstraint`;<\/code><\/p>\n
\n\/\/ this snaps one object to another using worldSpace matrix coordinates
\nstring $sel[] = `ls -sl`;
\nfloat $m[] = `getAttr ($sel[1] + \".worldMatrix\")`;
\nxform -ws -m $m[0] $m[1] $m[2] $m[3] $m[4] $m[5] $m[6] $m[7] $m[8] $m[9] $m[10] $m[11] $m[12] $m[13] $m[14] $m[15] ($sel[0]);
\n<\/code><\/p>\n
\n# uses matrices to snap one object to another
\nimport maya
\n# yes, I put all my commands into the main namespace
\nfrom maya.cmds import *<\/p>\n
\nmat = getAttr(sel[1] + \".worldMatrix\")
\nxform(sel[0], ws=True, m=mat)
\n<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"