自动初始化UV

auto_uv.py

#========================================
#    author: Changlong.Zang
#      mail: zclongpop123@163.cOpenMaya.
#      time: Wed Oct 20 21:20:37 2021
#========================================
import os
import glob
import datetime
import maya.cmds as mc
import pymel.core as pm
import maya.OpenMaya as OpenMaya
import maya.api.OpenMaya as om
#--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
def export_uv(uv_file):
    '''
    '''
    l_meshes = []
    top_group = 'master'
    if pm.objExists('master_grp'):
        top_group = 'master_grp'
    mesh_group = '|%s|poly' % top_group
    l_meshes = pm.listRelatives(mesh_group, ad=True, type='mesh')

    f = open(uv_file, 'w')
    f.write('// ' + pm.sceneName() + '\n')

    for node in l_meshes:
        if node.isIntermediateObject():
            continue
        f.write(
            ' '.join([node.fullPath(), str(node.numVertices()), str(node.numEdges()), str(node.numFaces())]) + '\n')
        uvset_list = [n for n in pm.polyUVSet(node, allUVSets=True, q=True)]

        for uvset in uvset_list:
            f.write(uvset + '\n')
            pm.polyUVSet(node, currentUVSet=True, uvSet=uvset)
            sl = om.MSelectionList()
            sl.add(node.name())
            mesh_dag = sl.getDagPath(0)
            mesh_mfn = om.MFnMesh(mesh_dag)
            (l_u, l_v) = mesh_mfn.getUVs()
            (uv_cnts, uv_ids) = mesh_mfn.getAssignedUVs()

            if not (l_u and l_v and uv_cnts and uv_ids):
                continue

            f.write(' '.join([str(i) for i in l_u]) + '\n')
            f.write(' '.join([str(i) for i in l_v]) + '\n')
            f.write(' '.join([str(i) for i in uv_cnts]) + '\n')
            f.write(' '.join([str(i) for i in uv_ids]) + '\n')

        pm.polyUVSet(node, currentUVSet=True, uvSet='map1')
    f.close()



def main():
    '''
    '''
    for asset_root in glob.iglob('Z:/projects/huoshen/publish/asset/*/*'):
        if not os.path.isdir(asset_root):
            continue

        asset_name = os.path.basename(asset_root)
        uv_file = os.path.join(asset_root, 'srf', '{0}.srf.surfacing'.format(asset_name), '{0}.uv'.format(asset_name))
        if not os.path.isfile(uv_file):
            continue
        print uv_file
        mtime = datetime.datetime.fromtimestamp(os.path.getmtime(uv_file))
        if mtime.year == 2021 and mtime.month == 10 and mtime.day >= 20:
            continue

        srf_file = '{0}.ma'.format(os.path.splitext(uv_file)[0])
        print srf_file
        try:
            mc.file(srf_file, o=True, f=True)
        except:
            continue

        for geo_node in mc.listRelatives(mc.ls(typ='mesh'), p=True, path=True):
            try:
                geo_mfn = OpenMaya.MFnMesh(pm.PyNode(geo_node).__apimdagpath__())
            except:
                continue
            geo_uv_names = list()
            geo_mfn.getUVSetNames(geo_uv_names)

            if not geo_uv_names:
                uv_set = mc.polyUVSet(create=True, uvSet='map1')
                mc.polyUVSet(currentUVSet=True, uvSet=uv_set[0])
                mc.polyAutoProjection(geo_node)

            _u = OpenMaya.MFloatArray()
            _v = OpenMaya.MFloatArray()
            for uv_set in geo_uv_names:
                geo_mfn.getUVs(_u, _v, uv_set)
                if not _u or not _v:
                    mc.polyUVSet(currentUVSet=True, uvSet=uv_set)
                    mc.polyAutoProjection(geo_node)

        export_uv(uv_file)
        print 'OK!\n'


if __name__ == '__main__':
    main()