Example of finding materials connected to a mesh. This should become redundant as there will be convenience functions added to the TD SDK soon.

meshMaterials.py

# Example of finding materials connected to a mesh. This should become redundant as
# there will be convenience functions added to the TD SDK soon.

import modo

# This gets the selected mesh if any
mesh = modo.Mesh()

if mesh:
	
	# First collect the materials polygon tags of the mesh in question
	ptags = set()
	for tagType in (lx.symbol.i_POLYTAG_MATERIAL, lx.symbol.i_POLYTAG_PART):
		for index in range(mesh.geometry.PTagCount(tagType)):
			ptag = mesh.geometry.internalMesh.PTagByIndex(tagType, index)
			ptags.add(ptag)
	
	# Then, iterate all group masks and see if their tags match with the ones from the mesh
	groupMasks = set()
	for groupMask in modo.Scene().renderItem.childrenByType('mask'):
		tagType = groupMask.channel('ptyp').get()
		if tagType in ('Material', 'Part'):
			assignedTag = groupMask.channel('ptag').get()
			if assignedTag in ptags:
				groupMasks.add(groupMask)
	
	# Print their names and children's names
	for groupMask in groupMasks:
		print ''
		print 'groupMask {}:'.format(groupMask.name)
		for child in groupMask.children():
			print '- child {}'.format(child.name)