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Moved ngon creating function from obj_import into BPyMesh so other importers can use it.

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Exporter free's mesh vertex data each run (was causing memory errors when exporting fluidsim meshes... poke ken for Mesh.Unlink() since many meshes are still created)
Exporter had an indentation error also.
Added an NMesh wrapper around Mesh for importers to use, so as to work around slow 1 by 1 adding of data. used in upcoming flt_importer update.
Mesh cleanup now has the dangerous option to perform a cleanup on ALL mesh data. (needed it for a project)
This commit is contained in:
Campbell Barton
2006-04-10 21:42:18 +00:00
parent 4043934d2c
commit 9c322c7e86
4 changed files with 273 additions and 109 deletions
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107
release/scripts/obj_import.py
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@@ -73,91 +73,7 @@ def stripExt(name): # name is a string
from Blender import *
import BPyImage
reload(BPyImage)
# takes a polyline of indicies (fgon)
# and returns a list of face indicie lists.
def ngon(from_mesh, indicies):
if len(indicies) < 4:
return [indicies]
temp_mesh_name= '~NGON_TEMP~'
is_editmode= Window.EditMode()
if is_editmode:
Window.EditMode(0)
try:
temp_mesh = Mesh.Get(temp_mesh_name)
if temp_mesh.users!=0:
temp_mesh = Mesh.New(temp_mesh_name)
except:
temp_mesh = Mesh.New(temp_mesh_name)
temp_mesh.verts.extend( [from_mesh.verts[i].co for i in indicies] )
temp_mesh.edges.extend( [(temp_mesh.verts[i], temp_mesh.verts[i-1]) for i in xrange(len(temp_mesh.verts))] )
oldmode = Mesh.Mode()
Mesh.Mode(Mesh.SelectModes['VERTEX'])
for v in temp_mesh.verts:
v.sel= 1
# Must link to scene
scn= Scene.GetCurrent()
temp_ob= Object.New('Mesh')
temp_ob.link(temp_mesh)
scn.link(temp_ob)
temp_mesh.fill()
scn.unlink(temp_ob)
Mesh.Mode(oldmode)
new_indicies= [ [v.index for v in f.v] for f in temp_mesh.faces ]
if not new_indicies: # JUST DO A FAN, Cant Scanfill
print 'Warning Cannot scanfill!- Fallback on a triangle fan.'
new_indicies = [ [indicies[0], indicies[i-1], indicies[i]] for i in xrange(2, len(indicies)) ]
else:
# Use real scanfill.
# See if its flipped the wrong way.
flip= None
for fi in new_indicies:
if flip != None:
break
for i, vi in enumerate(fi):
if vi==0 and fi[i-1]==1:
flip= False
break
elif vi==1 and fi[i-1]==0:
flip= True
break
if not flip:
for fi in new_indicies:
fi.reverse()
if is_editmode:
Window.EditMode(1)
# Save some memory and forget about the verts.
# since we cant unlink the mesh.
temp_mesh.verts= None
return new_indicies
# EG
'''
scn= Scene.GetCurrent()
me = scn.getActiveObject().getData(mesh=1)
ind= [v.index for v in me.verts if v.sel] # Get indicies
indicies = ngon(me, ind) # fill the ngon.
# Extand the faces to show what the scanfill looked like.
print len(indicies)
me.faces.extend([[me.verts[ii] for ii in i] for i in indicies])
'''
import BPyMesh
try:
import os
@@ -416,12 +332,12 @@ def load_obj(file, IMPORT_MTL=1, IMPORT_EDGES=1, IMPORT_SMOOTH_ALL=0, IMPORT_FGO
materialDict[k]= Material.New(k)
# Make a list of all unused vert indicies that we can copy from
# Make a list of all unused vert indices that we can copy from
VERT_USED_LIST= [-1]*len_vertList
# Here we store a boolean list of which verts are used or not
# no we know weather to add them to the current mesh
# This is an issue with global vertex indicies being translated to per mesh indicies
# This is an issue with global vertex indices being translated to per mesh indices
# like blenders, we start with a dummy just like the vert.
# -1 means unused, any other value refers to the local mesh index of the vert.
@@ -435,7 +351,7 @@ def load_obj(file, IMPORT_MTL=1, IMPORT_EDGES=1, IMPORT_SMOOTH_ALL=0, IMPORT_FGO
#meshDict= {} # The 3 variables below are stored in a tuple within this dict for each mesh
currentMesh= NMesh.GetRaw() # The NMesh representation of the OBJ group/Object
#currentUsedVertList= {} # A Dict of smooth groups, each smooth group has a list of used verts and they are generated on demand so as to save memory.
currentMaterialMeshMapping= {} # Used to store material indicies so we dont have to search the mesh for materials every time.
currentMaterialMeshMapping= {} # Used to store material indices so we dont have to search the mesh for materials every time.
# Every mesh has a null smooth group, this is used if there are no smooth groups in the OBJ file.
# and when for faces where no smooth group is used.
@@ -456,7 +372,7 @@ def load_obj(file, IMPORT_MTL=1, IMPORT_EDGES=1, IMPORT_SMOOTH_ALL=0, IMPORT_FGO
badObjFaceTexCo= 0
#currentMesh.verts.append(vertList[0]) # So we can sync with OBJ indicies where 1 is the first item.
#currentMesh.verts.append(vertList[0]) # So we can sync with OBJ indices where 1 is the first item.
if len_uvMapList > 1:
currentMesh.hasFaceUV(1) # Turn UV's on if we have ANY texture coords in this obj file.
@@ -591,7 +507,7 @@ def load_obj(file, IMPORT_MTL=1, IMPORT_EDGES=1, IMPORT_SMOOTH_ALL=0, IMPORT_FGO
# Vert Index - OBJ supports negative index assignment (like python)
index= int(objVert[0])-1
# Account for negative indicies.
# Account for negative indices.
if index < 0:
if IMPORT_RELATIVE_VERTS: # non standard
index= VERT_COUNT+index+1
@@ -713,16 +629,17 @@ def load_obj(file, IMPORT_MTL=1, IMPORT_EDGES=1, IMPORT_SMOOTH_ALL=0, IMPORT_FGO
currentMesh.faces.append(f) # move the face onto the mesh
elif face_vert_count > 4: # NGons.
# we need to map indicies to uv coords.
# we need to map indices to uv coords.
currentMeshRelativeIdxs= [currentUsedVertListSmoothGroup[i] for i in vIdxLs]
if fHasUV:
vert2UvMapping=dict( [ (currentMeshRelativeIdxs[i],vtIdxLs[i]) for i in xrange(face_vert_count)] )
ngon_face_indicies= ngon(currentMesh, currentMeshRelativeIdxs)
ngon_face_indices= BPyMesh.ngon(currentMesh, currentMeshRelativeIdxs)
# At the moment scanfill always makes tri's but dont count on it
for fillFace in ngon_face_indicies:
for fillFace in ngon_face_indices:
f= NMesh.Face([currentMesh.verts[currentMeshRelativeIdxs[i]] for i in fillFace])
if fHasUV:
@@ -739,7 +656,7 @@ def load_obj(file, IMPORT_MTL=1, IMPORT_EDGES=1, IMPORT_SMOOTH_ALL=0, IMPORT_FGO
# Set fgon flag.
if IMPORT_FGON:
edgeUsers={}
for fillFace in ngon_face_indicies:
for fillFace in ngon_face_indices:
for i in xrange(len(fillFace)): # Should always be 3
i1= currentMeshRelativeIdxs[fillFace[i]]
i2= currentMeshRelativeIdxs[fillFace[i-1]]
@@ -908,7 +825,7 @@ def load_obj_ui(file):
('Create FGons', IMPORT_FGON, 'Import faces with more then 4 verts as fgons.'),\
('Smooth Groups', IMPORT_SMOOTH_GROUPS, 'Only Share verts within smooth groups. (Warning, Hogs Memory)'),\
('Split by Material', IMPORT_MTL_SPLIT, 'Import each material into a seperate mesh (Avoids >16 meterials per mesh problem)'),\
('Relative Verts', IMPORT_RELATIVE_VERTS, 'Import non standard OBJs with relative vertex indicies, try if your mesh imports with scrambled faces.'),\
('Relative Verts', IMPORT_RELATIVE_VERTS, 'Import non standard OBJs with relative vertex indices, try if your mesh imports with scrambled faces.'),\
]
if not os: