Bases: MayaInstancePlugin, OptionalPyblishPluginMixin
Validate the current mesh has UVs.
It validates whether the current UV set has non-zero UVs and at least more than the vertex count. It's not really bulletproof, but a simple quick validation to check if there are likely UVs for every face.
Source code in client/ayon_maya/plugins/publish/validate_mesh_has_uv.py
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87 | class ValidateMeshHasUVs(plugin.MayaInstancePlugin,
OptionalPyblishPluginMixin):
"""Validate the current mesh has UVs.
It validates whether the current UV set has non-zero UVs and
at least more than the vertex count. It's not really bulletproof,
but a simple quick validation to check if there are likely
UVs for every face.
"""
order = ValidateMeshOrder
families = ['model']
label = 'Mesh Has UVs'
actions = [ayon_maya.api.action.SelectInvalidAction]
optional = True
@classmethod
def get_invalid(cls, instance):
invalid = []
for node in cmds.ls(instance, type='mesh'):
num_vertices = cmds.polyEvaluate(node, vertex=True)
if num_vertices == 0:
cls.log.warning(
"Skipping \"{}\", cause it does not have any "
"vertices.".format(node)
)
continue
uv = cmds.polyEvaluate(node, uv=True)
if uv == 0:
invalid.append(node)
continue
vertex = cmds.polyEvaluate(node, vertex=True)
if uv < vertex:
# Workaround:
# Maya can have instanced UVs in a single mesh, for example
# imported from an Alembic. With instanced UVs the UV count
# from `maya.cmds.polyEvaluate(uv=True)` will only result in
# the unique UV count instead of for all vertices.
#
# Note: Maya can save instanced UVs to `mayaAscii` but cannot
# load this as instanced. So saving, opening and saving
# again will lose this information.
map_attr = "{}.map[*]".format(node)
uv_to_vertex = cmds.polyListComponentConversion(map_attr,
toVertex=True)
uv_vertex_count = len_flattened(uv_to_vertex)
if uv_vertex_count < vertex:
invalid.append(node)
else:
cls.log.warning("Node has instanced UV points: "
"{0}".format(node))
return invalid
def process(self, instance):
if not self.is_active(instance.data):
return
invalid = self.get_invalid(instance)
if invalid:
names = "\n".join(
" - {}".format(node) for node in invalid
)
raise PublishValidationError(
title="Mesh has missing UVs",
message="Model meshes are required to have UVs.\n\n"
"Meshes detected with invalid or missing UVs:\n"
"{0}".format(names)
)
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