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Snippet to removeUnusedInfluences in Autodesk Maya using Python.
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| import maya.cmds as cmds | |
| ''' | |
| # EXAMPLE USAGES: | |
| # Removes all unused influences from skinCluster1 | |
| remove_unused_influences('skinCluster1') | |
| # Removes the two specified joints from Body_SkinCluster, | |
| but only if they are not currently weighted to anything. | |
| remove_unused_influences('Body_SkinCluster', ['leg_L0_5_jnt', 'leg_R0_5_jnt']) | |
| ''' | |
| def remove_unused_influences(skinCls, targetInfluences=[]): | |
| ''' | |
| Snippet to removeUnusedInfluences in Autodesk Maya using Python. | |
| The MEL version runs slowly, over every influence one at a time. | |
| "targetInfluences" allows you to directly specify which influences to remove. | |
| This will only remove targets which are not currently being used. | |
| ''' | |
| allInfluences = cmds.skinCluster(skinCls, q=True, inf=True) | |
| weightedInfluences = cmds.skinCluster(skinCls, q=True, wi=True) | |
| unusedInfluences = [inf for inf in allInfluences if inf not in weightedInfluences] | |
| if targetInfluences: | |
| unusedInfluences = [ | |
| inf for inf in allInfluences | |
| if inf in targetInfluences | |
| if inf not in weightedInfluences | |
| ] | |
| cmds.skinCluster(skinCls, e=True, removeInfluence=unusedInfluences) |
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