healer.py

from meshlib import mrmeshpy as mm

def holeLength( mesh : mm.Mesh, hole : mm.vectorEdges )->float:
	sumLength = 0.0
	for e in hole:
		org = mesh.topology.org( e )
		dest = mesh.topology.dest( e )
		sumLength += (mesh.points.vec[dest.get()] - mesh.points.vec[org.get()]).length()
	return sumLength

def hasBigHoles(mesh : mm.Mesh, critHoleLength : float)->bool:
	if ( critHoleLength < 0 ):
		return False
	holes = mm.findRightBoundary( mesh.topology )
	for hole in holes:
		if ( holeLength(mesh, hole) >= critHoleLength ):
			return True
	return False

def hasOverhangs( mesh : mm.Mesh, layerStep : float, width : float )->bool:
	oParams = mm.FindOverhangsSettings()
	oParams.layerHeight = layerStep
	oParams.maxOverhangDistance = width
	return mrmesh.findOverhangs(mesh,oParams).size() > 0

def heal( mesh : mm.Mesh, voxelSize : float, decimate : bool = True )->mm.Mesh:
	numHoles = mm.findRightBoundary( mesh.topology ).size()
	oParams = mm.GeneralOffsetParameters()
	if (numHoles != 0):
		oParams.signDetectionMode = mm.SignDetectionMode.HoleWindingRule
	oParams.voxelSize = voxelSize
	resMesh = mm.generalOffsetMesh( mesh, 0.0, oParams)
	if ( decimate ):
		resMesh.packOptimally(False)
		dSettings = mm.DecimateSettings()
		dSettings.maxError = 0.25 * voxelSize
		dSettings.tinyEdgeLength = mesh.computeBoundingBox().diagonal() * 1e-4
		dSettings.stabilizer = 1e-5
		dSettings.packMesh = True
		dSettings.subdivideParts = 64
		mm.decimateMesh(resMesh,dSettings)
	return resMesh