def createFromTo(objs=[], divisions=4, degree=3):
from maya.cmds import ls, attributeQuery, xform, pointPosition, curve
from ezLib import transform
# no objs put it: get from selection
if not objs:
objs = ls(sl=1)
if len(objs) != 2:
raise IOError, 'need 2 objs to get start & end from!'
print ('objs: ' + str(objs))
pos = []
for i in range(2):
# to get transforms/joints or anything that has translate attributes
if attributeQuery('t', node=objs[i], exists=1):
pos.append(xform(objs[i],q=1,t=1,ws=1))
else:
try:
pos.append(pointPosition(objs[i], world=1))
except IOError:
print 'cannot get position from ' + objs[i]
#vector from start to end
posArray = transform.posRange(pos[0], pos[1], divisions + 1)
crv = curve(p=posArray)
# center pivot and reset pivot
xform(crv, centerPivots=1)
transform.resetPivot(crv)
def ribbonize(crv=[], shader='lambert1', divLen=32, divWid=1):
'''
creates a basic curve driven mesh stream
future versions shall have a twist, shift and width value
that can be animated over lenght of the curve
'''
from ezLib import transform
numInput = len(crv)
crv = get(crv)
for c in crv:
crvShp = ls(c, s=1, dag=1)[0]
o1 = createNode('offsetCurve')
o2 = createNode('offsetCurve')
connectAttr(crvShp + '.worldSpace[0]', o1 + '.inputCurve')
connectAttr(crvShp + '.worldSpace[0]', o2 + '.inputCurve')
# create visible attr at the curveShape to control ribbon width
rw = 'ribbonWidth'
if not attributeQuery(rw, node=crvShp, exists=1):
addAttr(crvShp, ln=rw, at='float')
setAttr(crvShp + '.' + rw, 10, keyable=1)
connectAttr(crvShp + '.' + rw, o1 + '.distance')
mtply = createNode('multiplyDivide')
setAttr(mtply + '.input2X', -1)
connectAttr(crvShp + '.' + rw, mtply + '.input1X')
connectAttr(mtply + '.outputX', o2 + '.distance')
# loft the 2 offsets
loft = createNode('loft')
connectAttr(o1 + '.outputCurve[0]', loft + '.inputCurve[0]')
connectAttr(o2 + '.outputCurve[0]', loft + '.inputCurve[1]')
tess = createNode('nurbsTessellate')
connectAttr(loft + '.outputSurface', tess + '.inputSurface')
# setup the surface creation
setAttr(tess + '.format', 2) # 0 or 2 is useful. 0 'count' tries to create square quads
setAttr(tess + '.polygonType', 1)
setAttr(tess + '.chordHeightRatio', 0.9)
setAttr(tess + '.uNumber', divWid)
setAttr(tess + '.vNumber', divLen)
setAttr(tess + '.uType', 3)
setAttr(tess + '.vType', 1) # makes up the distribution: 2 is cv based, 1 is even distribution
mesh = createNode('mesh')
sets(mesh, e=1,forceElement='initialShadingGroup')
tr = listRelatives(mesh, p=1)[0]
xform(tr, pivots=xform(c, q=1,t=1, ws=1))
connectAttr(tess + '.outputPolygon', mesh + '.inMesh')
transform.resetPivot(tr)
rename(tr, c + 'Ribbon')
if not numInput:
select(crv)
