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November 28, 2015 17:42
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Creates circle ctrls around a hierarchy of joints
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import maya.cmds as cmds | |
from collections import namedtuple | |
PivotCtrl = namedtuple("PivotCtrl", "jnt ctrl sdk offset") | |
def getInheritedRotation(obj): | |
rotation = [0,0,0] | |
p = cmds.listRelatives(obj, allParents=True) | |
while p != None: | |
if cmds.nodeType(p) != "joint": | |
rotation = [x + y for x,y in zip(rotation, cmds.xform(p, q=True, rotation=True))] | |
else: | |
rotation = [x + y for x,y in zip(rotation, cmds.joint(p, q=True, orientation=True))] | |
p = cmds.listRelatives(p, allParents=True) | |
return rotation | |
def getChildLevel(obj): | |
p = cmds.listRelatives(obj, allParents=True, type="joint") | |
level = 1 | |
while p != None: | |
level += 1 | |
p = cmds.listRelatives(p, allParents=True, type="joint") | |
return level | |
def generateColour(level, lenLevels, red=True, green=True, blue=False, redSub=False, greenSub=True, blueSub=False): | |
div = 1.0/lenLevels | |
col = [0,0,0] | |
if red and not redSub: | |
col[0] = div*level | |
elif red: | |
col[0] = 1-div*level | |
if green and not greenSub: | |
col[1] = div*level | |
elif green: | |
col[1] = 1-div*level | |
if blue and not blueSub: | |
col[2] = div*level | |
if blue: | |
col[2] = 1-div*level | |
return col | |
def generateColourList(lenLevels, red=True, green=True, blue=False, redSub=False, greenSub=True, blueSub=False): | |
colours = [] | |
for i in range(1,lenLevels+1): | |
colours.append(generateColour(i, lenLevels, red, green, blue)) | |
return colours | |
if __name__ == "__main__": | |
jnt = [cmds.ls(selection=True, type="joint")[0]] | |
jntHier = cmds.listRelatives(allDescendents=True, type="joint")[1:] + jnt | |
colours = generateColourList(len(jntHier)) | |
allJntCtrls = [] | |
for i,jnt in enumerate(jntHier): | |
jntPos = cmds.joint(jnt, q=True, p=True) | |
jntOri = cmds.joint(jnt, q=True, o=True) | |
jntOri[1] += 90 | |
finalJntOri = [x + y for x,y in zip(jntOri, getInheritedRotation(jnt))] | |
ctrl = cmds.circle(name="{}_ctrl".format(jnt)) | |
ctrl[1] = cmds.listRelatives(ctrl[0], shapes=True, type="nurbsCurve")[0] | |
cmds.setAttr("{}.overrideEnabled".format(ctrl[1]), 1) | |
cmds.setAttr("{}.overrideRGBColors".format(ctrl[1]), 1) | |
cmds.setAttr("{}.overrideColorRGB".format(ctrl[1]), *colours[i], type="double3") | |
sdk = cmds.group(ctrl, name="{}_sdk".format(ctrl[0])) | |
off = cmds.group(sdk, name="{}_0".format(ctrl[0])) | |
cmds.xform(off, translation=jntPos, rotation=finalJntOri) | |
allJntCtrls.append(PivotCtrl(jnt=jnt, ctrl=ctrl, sdk=sdk, offset=off)) | |
print allJntCtrls | |
for i in range(len(allJntCtrls)-1): | |
cmds.parent(allJntCtrls[i].offset, allJntCtrls[i+1].ctrl[0]) |
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