blender/release/scripts/mesh_cleanup.py

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#!BPY
"""
Name: 'Clean meshes'
Blender: 228
Group: 'Mesh'
Tooltip: 'Clean unused data from all selected mesh objects.'
"""
from Blender import *
from Blender.Mathutils import TriangleArea
def rem_free_verts(me):
vert_users = [0] * len(me.verts)
for f in me.faces:
for v in f.v:
vert_users[v.index]+=1
for e in me.edges:
for v in e: # loop on edge verts
vert_users[v.index]+=1
verts_free = []
for i, users in enumerate(vert_users):
if not users:
verts_free.append(i)
if verts_free:
pass
me.verts.delete(verts_free)
return len(verts_free)
def rem_free_edges(me, limit=None):
''' Only remove based on limit if a limit is set, else remove all '''
def sortPair(a,b):
return min(a,b), max(a,b)
edgeDict = {} # will use a set when python 2.4 is standard.
for f in me.faces:
for i in xrange(len(f.v)):
edgeDict[sortPair(f.v[i].index, f.v[i-1].index)] = None
edges_free = []
for e in me.edges:
if not edgeDict.has_key(sortPair(e.v1.index, e.v2.index)):
edges_free.append(e)
if limit != None:
edges_free = [e for e in edges_free if (e.v1.co-e.v2.co).length <= limit]
me.edges.delete(edges_free)
return len(edges_free)
def rem_area_faces(me, limit=0.001):
''' Faces that have an area below the limit '''
def faceArea(f):
if len(f.v) == 3:
return TriangleArea(f.v[0].co, f.v[1].co, f.v[2].co)
elif len(f.v) == 4:
return\
TriangleArea(f.v[0].co, f.v[1].co, f.v[2].co) +\
TriangleArea(f.v[0].co, f.v[2].co, f.v[3].co)
rem_faces = [f for f in me.faces if faceArea(f) <= limit]
if rem_faces:
me.faces.delete( 0, rem_faces )
return len(rem_faces)
def rem_perimeter_faces(me, limit=0.001):
''' Faces whos combine edge length is below the limit '''
def faceEdLen(f):
if len(f.v) == 3:
return\
(f.v[0].co-f.v[1].co).length +\
(f.v[1].co-f.v[2].co).length +\
(f.v[2].co-f.v[0].co).length
elif len(f.v) == 4:
return\
(f.v[0].co-f.v[1].co).length +\
(f.v[1].co-f.v[2].co).length +\
(f.v[2].co-f.v[3].co).length +\
(f.v[3].co-f.v[0].co).length
rem_faces = [f for f in me.faces if faceEdLen(f) <= limit]
if rem_faces:
me.faces.delete( 0, rem_faces )
return len(rem_faces)
def main():
def getLimit(text):
return Draw.PupFloatInput(text, 0.001, 0.0, 1.0, 0.1, 4)
scn = Scene.GetCurrent()
obsel = Object.GetSelected()
actob = scn.getActiveObject()
is_editmode = Window.EditMode()
# Edit mode object is not active, add it to the list.
if is_editmode and (not actob.sel):
obsel.append(actob)
meshes = [ob.getData(mesh=1) for ob in obsel if ob.getType() == 'Mesh']
#====================================#
# Popup menu to select the functions #
#====================================#
'''
if not meshes:
Draw.PupMenu('ERROR%t|no meshes in selection')
return
method = Draw.PupMenu("""
Clean Mesh, Remove...%t|
Verts: free standing|
Edges: not in a face|
Edges: below a length|
Faces: below an area|%l|
All of the above|""")
if method == -1:
return
if method >= 3:
limit = getLimit('threshold: ')
print 'method', method
'''
CLEAN_VERTS_FREE = Draw.Create(1)
CLEAN_EDGE_NOFACE = Draw.Create(0)
CLEAN_EDGE_SMALL = Draw.Create(0)
CLEAN_FACE_PERIMETER = Draw.Create(0)
CLEAN_FACE_SMALL = Draw.Create(0)
limit = Draw.Create(0.01)
# Get USER Options
pup_block = [\
('Verts: free', CLEAN_VERTS_FREE, 'Remove verts that are not used by an edge or a face.'),\
('Edges: free', CLEAN_EDGE_NOFACE, 'Remove edges that are not in a face.'),\
('Edges: short', CLEAN_EDGE_SMALL, 'Remove edges that are below the length limit.'),\
('Faces: small perimeter', CLEAN_FACE_PERIMETER, 'Remove faces below the perimeter limit.'),\
('Faces: small area', CLEAN_FACE_SMALL, 'Remove faces below the area limit (may remove faces stopping T-face artifacts).'),\
('limit: ', limit, 0.001, 1.0, 'Limit used for the area and length tests above (a higher limit will remove more data).'),\
]
if not Draw.PupBlock('Clean Selected Meshes...', pup_block):
return
CLEAN_VERTS_FREE = CLEAN_VERTS_FREE.val
CLEAN_EDGE_NOFACE = CLEAN_EDGE_NOFACE.val
CLEAN_EDGE_SMALL = CLEAN_EDGE_SMALL.val
CLEAN_FACE_PERIMETER = CLEAN_FACE_PERIMETER.val
CLEAN_FACE_SMALL = CLEAN_FACE_SMALL.val
limit = limit.val
if is_editmode: Window.EditMode(0)
rem_face_count = rem_edge_count = rem_vert_count = 0
for me in meshes:
if CLEAN_FACE_SMALL:
rem_face_count += rem_area_faces(me, limit)
if CLEAN_FACE_PERIMETER:
rem_face_count += rem_perimeter_faces(me, limit)
if CLEAN_EDGE_SMALL: # for all use 2- remove all edges.
rem_edge_count += rem_free_edges(me, limit)
if CLEAN_EDGE_NOFACE:
rem_edge_count += rem_free_edges(me)
if CLEAN_VERTS_FREE:
rem_vert_count += rem_free_verts(me)
if is_editmode: Window.EditMode(0)
Draw.PupMenu('Removed from ' + str(len(meshes)) +' Mesh(es)%t|' + 'Verts:' + str(rem_vert_count) + ' Edges:' + str(rem_edge_count) + ' Faces:' + str(rem_face_count))
if __name__ == '__main__':
main()