Such yaratish uchun Xgen ko’rsatmalari

from maya import cmds
from maya import OpenMaya
import os


def create_root_uv_attribute(curves_group, mesh_node, uv_set='map1'):
'''
Create "groom_root_uv" attribute on group of curves.
'''


# check curves group
if not cmds.objExists(curves_group):
raise RuntimeError('Group not found: "{}"'.format(curves_group))


# get curves in group
curve_shapes = cmds.listRelatives(curves_group, shapes=True, noIntermediate=True)
curve_shapes = cmds.ls(curve_shapes, type='nurbsCurve')
if not curve_shapes:
raise RuntimeError('Invalid curves group. No nurbs-curves found in group.')
else:
print "found curves"
print curve_shapes


# get curve roots
points = list()
for curve_shape in curve_shapes:
point = cmds.pointPosition('{}.cv[0]'.format(curve_shape), world=True)
points.append(point)


# get uvs
values = list()
uvs = find_closest_uv_point(points, mesh_node, uv_set=uv_set)
for u, v in uvs:
values.append([u, v, 0])
#print (str(u) + " , " + str(v) )


# create attribute
name = 'groom_root_uv'
cmds.addAttr(curves_group, ln=name, dt='vectorArray')
cmds.addAttr(curves_group, ln='{}_AbcGeomScope'.format(name), dt='string')
cmds.addAttr(curves_group, ln='{}_AbcType'.format(name), dt='string')


cmds.setAttr('{}.{}'.format(curves_group, name), len(values), *values, type='vectorArray')
cmds.setAttr('{}.{}_AbcGeomScope'.format(curves_group, name), 'uni', type='string')
cmds.setAttr('{}.{}_AbcType'.format(curves_group, name), 'vector2', type='string')


return uvs


def find_closest_uv_point(points, mesh_node, uv_set='map1'):
'''
Find mesh UV-coordinates at given points.
'''


# check mesh
if not cmds.objExists(mesh_node):
raise RuntimeError('Node not found: "{}"'.format(mesh_node))


# check uv_set
uv_sets = cmds.polyUVSet(mesh_node, q=True, allUVSets=True)
if uv_set not in uv_sets:
raise RuntimeError('Invalid uv_set provided: "{}"'.format(uv_set))


# get mesh as dag-path
selection_list = OpenMaya.MSelectionList()
selection_list.add(mesh_node)


mesh_dagpath = OpenMaya.MDagPath()
selection_list.getDagPath(0, mesh_dagpath)
mesh_dagpath.extendToShape()


# get mesh function set
fn_mesh = OpenMaya.MFnMesh(mesh_dagpath)


uvs = list()
for i in range(len(points)):


script_util = OpenMaya.MScriptUtil()
script_util.createFromDouble(0.0, 0.0)
uv_point = script_util.asFloat2Ptr()


point = OpenMaya.MPoint(*points[i])
fn_mesh.getUVAtPoint(point, uv_point, OpenMaya.MSpace.kWorld, uv_set)


u = OpenMaya.MScriptUtil.getFloat2ArrayItem(uv_point, 0, 0)
v = OpenMaya.MScriptUtil.getFloat2ArrayItem(uv_point, 0, 1)


uvs.append((u, v))


return uvs