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Commit 7ea90663 authored by Campbell Barton's avatar Campbell Barton
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pass the pep8 checker.

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io_scene_obj/export_obj.py
+ 110
− 112
View file @ 7ea90663
......@@ -25,12 +25,14 @@ import shutil
import bpy
import mathutils
def fixName(name):
def name_compat(name):
if name is None:
return 'None'
else:
return name.replace(' ', '_')
def write_mtl(scene, filepath, copy_images, mtl_dict):
world = scene.world
......@@ -55,10 +57,8 @@ def write_mtl(scene, filepath, copy_images, mtl_dict):
rel = os.path.relpath(fn, dest_dir)
else:
rel = fn
return rel
file = open(filepath, "w", encoding='utf8')
file.write('# Blender MTL File: %r\n' % os.path.basename(bpy.data.filepath))
file.write('# Material Count: %i\n' % len(mtl_dict))
......@@ -68,50 +68,50 @@ def write_mtl(scene, filepath, copy_images, mtl_dict):
# Get the Blender data for the material and the image.
# Having an image named None will make a bug, dont do it :)
file.write('newmtl %s\n' % mtl_mat_name) # Define a new material: matname_imgname
file.write('newmtl %s\n' % mtl_mat_name) # Define a new material: matname_imgname
if mat:
file.write('Ns %.6f\n' % ((mat.specular_hardness-1) * 1.9607843137254901)) # Hardness, convert blenders 1-511 to MTL's
file.write('Ka %.6f %.6f %.6f\n' % tuple(c * mat.ambient for c in worldAmb)) # Ambient, uses mirror colour,
file.write('Kd %.6f %.6f %.6f\n' % tuple(c * mat.diffuse_intensity for c in mat.diffuse_color)) # Diffuse
file.write('Ks %.6f %.6f %.6f\n' % tuple(c * mat.specular_intensity for c in mat.specular_color)) # Specular
file.write('Ns %.6f\n' % ((mat.specular_hardness - 1) * 1.9607843137254901)) # Hardness, convert blenders 1-511 to MTL's
file.write('Ka %.6f %.6f %.6f\n' % tuple(c * mat.ambient for c in worldAmb)) # Ambient, uses mirror colour,
file.write('Kd %.6f %.6f %.6f\n' % tuple(c * mat.diffuse_intensity for c in mat.diffuse_color)) # Diffuse
file.write('Ks %.6f %.6f %.6f\n' % tuple(c * mat.specular_intensity for c in mat.specular_color)) # Specular
if hasattr(mat, "ior"):
file.write('Ni %.6f\n' % mat.ior) # Refraction index
file.write('Ni %.6f\n' % mat.ior) # Refraction index
else:
file.write('Ni %.6f\n' % 1.0)
file.write('d %.6f\n' % mat.alpha) # Alpha (obj uses 'd' for dissolve)
file.write('d %.6f\n' % mat.alpha) # Alpha (obj uses 'd' for dissolve)
# 0 to disable lighting, 1 for ambient & diffuse only (specular color set to black), 2 for full lighting.
if mat.use_shadeless:
file.write('illum 0\n') # ignore lighting
file.write('illum 0\n') # ignore lighting
elif mat.specular_intensity == 0:
file.write('illum 1\n') # no specular.
file.write('illum 1\n') # no specular.
else:
file.write('illum 2\n') # light normaly
file.write('illum 2\n') # light normaly
else:
#write a dummy material here?
file.write('Ns 0\n')
file.write('Ka %.6f %.6f %.6f\n' % tuple(c for c in worldAmb)) # Ambient, uses mirror colour,
file.write('Ka %.6f %.6f %.6f\n' % tuple(c for c in worldAmb)) # Ambient, uses mirror colour,
file.write('Kd 0.8 0.8 0.8\n')
file.write('Ks 0.8 0.8 0.8\n')
file.write('d 1\n') # No alpha
file.write('illum 2\n') # light normaly
file.write('d 1\n') # No alpha
file.write('illum 2\n') # light normaly
# Write images!
if img: # We have an image on the face!
# write relative image path
rel = copy_image(img)
file.write('map_Kd %s\n' % rel) # Diffuse mapping image
file.write('map_Kd %s\n' % rel) # Diffuse mapping image
# file.write('map_Kd %s\n' % img.filepath.split('\\')[-1].split('/')[-1]) # Diffuse mapping image
elif mat: # No face image. if we havea material search for MTex image.
elif mat: # No face image. if we havea material search for MTex image.
for mtex in mat.texture_slots:
if mtex and mtex.texture.type == 'IMAGE':
try:
filepath = copy_image(mtex.texture.image)
# filepath = mtex.texture.image.filepath.split('\\')[-1].split('/')[-1]
file.write('map_Kd %s\n' % repr(filepath)[1:-1]) # Diffuse mapping image
file.write('map_Kd %s\n' % repr(filepath)[1:-1]) # Diffuse mapping image
break
except:
# Texture has no image though its an image type, best ignore.
......@@ -121,6 +121,7 @@ def write_mtl(scene, filepath, copy_images, mtl_dict):
file.close()
# XXX not used
def copy_file(source, dest):
file = open(source, 'rb')
......@@ -139,10 +140,10 @@ def copy_images(dest_dir):
# Get unique image names
uniqueImages = {}
for matname, mat, image in mtl_dict.values(): # Only use image name
for matname, mat, image in mtl_dict.values(): # Only use image name
# Get Texface images
if image:
uniqueImages[image] = image # Should use sets here. wait until Python 2.4 is default.
uniqueImages[image] = image # Should use sets here. wait until Python 2.4 is default.
# Get MTex images
if mat:
......@@ -178,7 +179,7 @@ def test_nurbs_compat(ob):
return False
for nu in ob.data.splines:
if nu.point_count_v == 1 and nu.type != 'BEZIER': # not a surface and not bezier
if nu.point_count_v == 1 and nu.type != 'BEZIER': # not a surface and not bezier
return True
return False
......@@ -217,11 +218,11 @@ def write_nurb(file, ob, ob_mat):
pt_num += 1
tot_verts += pt_num
file.write('g %s\n' % (fixName(ob.name))) # fixName(ob.getData(1)) could use the data name too
file.write('cstype bspline\n') # not ideal, hard coded
file.write('deg %d\n' % DEG_ORDER_U) # not used for curves but most files have it still
file.write('g %s\n' % (name_compat(ob.name))) # name_compat(ob.getData(1)) could use the data name too
file.write('cstype bspline\n') # not ideal, hard coded
file.write('deg %d\n' % DEG_ORDER_U) # not used for curves but most files have it still
curve_ls = [-(i+1) for i in range(pt_num)]
curve_ls = [-(i + 1) for i in range(pt_num)]
# 'curv' keyword
if do_closed:
......@@ -232,17 +233,17 @@ def write_nurb(file, ob, ob_mat):
pt_num += DEG_ORDER_U
curve_ls = curve_ls + curve_ls[0:DEG_ORDER_U]
file.write('curv 0.0 1.0 %s\n' % (" ".join([str(i) for i in curve_ls]))) # Blender has no U and V values for the curve
file.write('curv 0.0 1.0 %s\n' % (" ".join([str(i) for i in curve_ls]))) # Blender has no U and V values for the curve
# 'parm' keyword
tot_parm = (DEG_ORDER_U + 1) + pt_num
tot_parm_div = float(tot_parm-1)
parm_ls = [(i/tot_parm_div) for i in range(tot_parm)]
tot_parm_div = float(tot_parm - 1)
parm_ls = [(i / tot_parm_div) for i in range(tot_parm)]
if do_endpoints: # end points, force param
for i in range(DEG_ORDER_U+1):
if do_endpoints: # end points, force param
for i in range(DEG_ORDER_U + 1):
parm_ls[i] = 0.0
parm_ls[-(1+i)] = 1.0
parm_ls[-(1 + i)] = 1.0
file.write("parm u %s\n" % " ".join(["%.6f" % i for i in parm_ls]))
......@@ -250,6 +251,7 @@ def write_nurb(file, ob, ob_mat):
return tot_verts
def write_file(filepath, objects, scene,
EXPORT_TRI=False,
EXPORT_EDGES=False,
......@@ -300,9 +302,9 @@ def write_file(filepath, objects, scene,
weightDict[vGroupName] = weightDict.get(vGroupName, 0) + weight
if weightDict:
alist = [(weight,vGroupName) for vGroupName, weight in weightDict.items()] # sort least to greatest amount of weight
alist = [(weight, vGroupName) for vGroupName, weight in weightDict.items()] # sort least to greatest amount of weight
alist.sort()
return(alist[-1][1]) # highest value last
return(alist[-1][1]) # highest value last
else:
return '(null)'
......@@ -322,10 +324,10 @@ def write_file(filepath, objects, scene,
# Tell the obj file what material file to use.
if EXPORT_MTL:
mtlfilepath = os.path.splitext(filepath)[0] + ".mtl"
file.write('mtllib %s\n' % repr(os.path.basename(mtlfilepath))[1:-1]) # filepath can contain non utf8 chars, use repr
file.write('mtllib %s\n' % repr(os.path.basename(mtlfilepath))[1:-1]) # filepath can contain non utf8 chars, use repr
if EXPORT_ROTX90:
mat_xrot90= mathutils.Matrix.Rotation(-math.pi/2, 4, 'X')
mat_xrot90 = mathutils.Matrix.Rotation(-math.pi / 2.0, 4, 'X')
# Initialize totals, these are updated each object
totverts = totuvco = totno = 1
......@@ -365,7 +367,7 @@ def write_file(filepath, objects, scene,
# Nurbs curve support
if EXPORT_CURVE_AS_NURBS and test_nurbs_compat(ob):
if EXPORT_ROTX90:
ob_mat = ob_mat * mat_xrot90
ob_mat = ob_mat * mat_xrot90
totverts += write_nurb(file, ob, ob_mat)
continue
# END NURBS
......@@ -395,7 +397,7 @@ def write_file(filepath, objects, scene,
me_verts = me.vertices[:]
# Make our own list so it can be sorted to reduce context switching
face_index_pairs = [ (face, index) for index, face in enumerate(me.faces)]
face_index_pairs = [(face, index) for index, face in enumerate(me.faces)]
# faces = [ f for f in me.faces ]
if EXPORT_EDGES:
......@@ -403,12 +405,12 @@ def write_file(filepath, objects, scene,
else:
edges = []
if not (len(face_index_pairs)+len(edges)+len(me.vertices)): # Make sure there is somthing to write
if not (len(face_index_pairs) + len(edges) + len(me.vertices)): # Make sure there is somthing to write
# clean up
bpy.data.meshes.remove(me)
continue # dont bother with this mesh.
continue # dont bother with this mesh.
# XXX
# High Quality Normals
......@@ -437,8 +439,8 @@ def write_file(filepath, objects, scene,
# Possible there null materials, will mess up indices
# but at least it will export, wait until Blender gets fixed.
materialNames.extend((16-len(materialNames)) * [None])
materialItems.extend((16-len(materialItems)) * [None])
materialNames.extend((16 - len(materialNames)) * [None])
materialItems.extend((16 - len(materialItems)) * [None])
# Sort by Material, then images
# so we dont over context switch in the obj file.
......@@ -447,10 +449,10 @@ def write_file(filepath, objects, scene,
elif faceuv:
face_index_pairs.sort(key=lambda a: (a[0].material_index, hash(uv_layer[a[1]].image), a[0].use_smooth))
elif len(materials) > 1:
face_index_pairs.sort(key = lambda a: (a[0].material_index, a[0].use_smooth))
face_index_pairs.sort(key=lambda a: (a[0].material_index, a[0].use_smooth))
else:
# no materials
face_index_pairs.sort(key = lambda a: a[0].use_smooth)
face_index_pairs.sort(key=lambda a: a[0].use_smooth)
# if EXPORT_KEEP_VERT_ORDER:
# pass
# elif faceuv:
......@@ -465,32 +467,31 @@ def write_file(filepath, objects, scene,
# except: faces.sort(lambda a,b: cmp(a.use_smooth, b.use_smooth))
# Set the default mat to no material and no image.
contextMat = (0, 0) # Can never be this, so we will label a new material teh first chance we get.
contextSmooth = None # Will either be true or false, set bad to force initialization switch.
contextMat = 0, 0 # Can never be this, so we will label a new material teh first chance we get.
contextSmooth = None # Will either be true or false, set bad to force initialization switch.
if EXPORT_BLEN_OBS or EXPORT_GROUP_BY_OB:
name1 = ob.name
name2 = ob.data.name
if name1 == name2:
obnamestring = fixName(name1)
obnamestring = name_compat(name1)
else:
obnamestring = '%s_%s' % (fixName(name1), fixName(name2))
obnamestring = '%s_%s' % (name_compat(name1), name_compat(name2))
if EXPORT_BLEN_OBS:
file.write('o %s\n' % obnamestring) # Write Object name
else: # if EXPORT_GROUP_BY_OB:
file.write('o %s\n' % obnamestring) # Write Object name
else: # if EXPORT_GROUP_BY_OB:
file.write('g %s\n' % obnamestring)
# Vert
for v in me_verts:
file.write('v %.6f %.6f %.6f\n' % v.co[:])
# UV
if faceuv:
uv_face_mapping = [[0,0,0,0] for i in range(len(face_index_pairs))] # a bit of a waste for tri's :/
uv_face_mapping = [[0, 0, 0, 0] for i in range(len(face_index_pairs))] # a bit of a waste for tri's :/
uv_dict = {} # could use a set() here
uv_dict = {} # could use a set() here
uv_layer = me.uv_textures.active.data
for f, f_index in face_index_pairs:
for uv_index, uv in enumerate(uv_layer[f_index].uv):
......@@ -514,14 +515,14 @@ def write_file(filepath, objects, scene,
noKey = veckey3d(v.normal)
if noKey not in globalNormals:
globalNormals[noKey] = totno
totno +=1
totno += 1
file.write('vn %.6f %.6f %.6f\n' % noKey)
else:
# Hard, 1 normal from the face.
noKey = veckey3d(f.normal)
if noKey not in globalNormals:
globalNormals[noKey] = totno
totno +=1
totno += 1
file.write('vn %.6f %.6f %.6f\n' % noKey)
if not faceuv:
......@@ -540,70 +541,70 @@ def write_file(filepath, objects, scene,
vgroupsMap[v_idx].append((vertGroupNames[g.group], g.weight))
for f, f_index in face_index_pairs:
f_smooth= f.use_smooth
f_mat = min(f.material_index, len(materialNames)-1)
f_smooth = f.use_smooth
f_mat = min(f.material_index, len(materialNames) - 1)
if faceuv:
tface = uv_layer[f_index]
f_image = tface.image
# MAKE KEY
if faceuv and f_image: # Object is always true.
key = materialNames[f_mat], f_image.name
if faceuv and f_image: # Object is always true.
key = materialNames[f_mat], f_image.name
else:
key = materialNames[f_mat], None # No image, use None instead.
key = materialNames[f_mat], None # No image, use None instead.
# Write the vertex group
if EXPORT_POLYGROUPS:
if ob.vertex_groups:
# find what vertext group the face belongs to
theVGroup = findVertexGroupName(f,vgroupsMap)
theVGroup = findVertexGroupName(f, vgroupsMap)
if theVGroup != currentVGroup:
currentVGroup = theVGroup
file.write('g %s\n' % theVGroup)
# CHECK FOR CONTEXT SWITCH
if key == contextMat:
pass # Context already switched, dont do anything
pass # Context already switched, dont do anything
else:
if key[0] is None and key[1] is None:
# Write a null material, since we know the context has changed.
if EXPORT_GROUP_BY_MAT:
# can be mat_image or (null)
file.write('g %s_%s\n' % (fixName(ob.name), fixName(ob.data.name)) ) # can be mat_image or (null)
file.write('usemtl (null)\n') # mat, image
file.write("g %s_%s\n" % (name_compat(ob.name), name_compat(ob.data.name))) # can be mat_image or (null)
file.write("usemtl (null)\n") # mat, image
else:
mat_data= mtl_dict.get(key)
mat_data = mtl_dict.get(key)
if not mat_data:
# First add to global dict so we can export to mtl
# Then write mtl
# Make a new names from the mat and image name,
# converting any spaces to underscores with fixName.
# converting any spaces to underscores with name_compat.
# If none image dont bother adding it to the name
if key[1] is None:
mat_data = mtl_dict[key] = ('%s'%fixName(key[0])), materialItems[f_mat], f_image
mat_data = mtl_dict[key] = ("%s" % name_compat(key[0])), materialItems[f_mat], f_image
else:
mat_data = mtl_dict[key] = ('%s_%s' % (fixName(key[0]), fixName(key[1]))), materialItems[f_mat], f_image
mat_data = mtl_dict[key] = ("%s_%s" % (name_compat(key[0]), name_compat(key[1]))), materialItems[f_mat], f_image
if EXPORT_GROUP_BY_MAT:
file.write('g %s_%s_%s\n' % (fixName(ob.name), fixName(ob.data.name), mat_data[0]) ) # can be mat_image or (null)
file.write("g %s_%s_%s\n" % (name_compat(ob.name), name_compat(ob.data.name), mat_data[0])) # can be mat_image or (null)
file.write('usemtl %s\n' % mat_data[0]) # can be mat_image or (null)
file.write("usemtl %s\n" % mat_data[0]) # can be mat_image or (null)
contextMat = key
if f_smooth != contextSmooth:
if f_smooth: # on now off
if f_smooth: # on now off
file.write('s 1\n')
contextSmooth = f_smooth
else: # was off now on
else: # was off now on
file.write('s off\n')
contextSmooth = f_smooth
f_v_orig = [(vi, me_verts[v_idx]) for vi, v_idx in enumerate(f.vertices)]
if not EXPORT_TRI or len(f_v_orig) == 3:
f_v_iter = (f_v_orig, )
else:
......@@ -615,41 +616,41 @@ def write_file(filepath, objects, scene,
if faceuv:
if EXPORT_NORMALS:
if f_smooth: # Smoothed, use vertex normals
if f_smooth: # Smoothed, use vertex normals
for vi, v in f_v:
file.write( ' %d/%d/%d' % \
file.write(" %d/%d/%d" % \
(v.index + totverts,
totuvco + uv_face_mapping[f_index][vi],
globalNormals[ veckey3d(v.normal) ]) ) # vert, uv, normal
globalNormals[veckey3d(v.normal)])) # vert, uv, normal
else: # No smoothing, face normals
no = globalNormals[ veckey3d(f.normal) ]
else: # No smoothing, face normals
no = globalNormals[veckey3d(f.normal)]
for vi, v in f_v:
file.write( ' %d/%d/%d' % \
file.write(" %d/%d/%d" % \
(v.index + totverts,
totuvco + uv_face_mapping[f_index][vi],
no) ) # vert, uv, normal
else: # No Normals
no)) # vert, uv, normal
else: # No Normals
for vi, v in f_v:
file.write( ' %d/%d' % (\
file.write(" %d/%d" % (\
v.index + totverts,\
totuvco + uv_face_mapping[f_index][vi])) # vert, uv
totuvco + uv_face_mapping[f_index][vi])) # vert, uv
face_vert_index += len(f_v)
else: # No UV's
else: # No UV's
if EXPORT_NORMALS:
if f_smooth: # Smoothed, use vertex normals
if f_smooth: # Smoothed, use vertex normals
for vi, v in f_v:
file.write( ' %d//%d' %
(v.index + totverts, globalNormals[ veckey3d(v.normal) ]) )
else: # No smoothing, face normals
no = globalNormals[ veckey3d(f.normal) ]
file.write(" %d//%d" %
(v.index + totverts, globalNormals[veckey3d(v.normal)]))
else: # No smoothing, face normals
no = globalNormals[veckey3d(f.normal)]
for vi, v in f_v:
file.write( ' %d//%d' % (v.index + totverts, no) )
else: # No Normals
file.write(" %d//%d" % (v.index + totverts, no))
else: # No Normals
for vi, v in f_v:
file.write( ' %d' % (v.index + totverts) )
file.write(" %d" % (v.index + totverts))
file.write('\n')
......@@ -672,7 +673,6 @@ def write_file(filepath, objects, scene,
file.close()
# Now we have all our materials, save them
if EXPORT_MTL:
write_mtl(scene, mtlfilepath, EXPORT_COPY_IMAGES, mtl_dict)
......@@ -689,29 +689,29 @@ def write_file(filepath, objects, scene,
print("OBJ Export time: %.2f" % (time.clock() - time1))
#
def _write(context, filepath,
EXPORT_TRI, # ok
EXPORT_TRI, # ok
EXPORT_EDGES,
EXPORT_NORMALS, # not yet
EXPORT_NORMALS_HQ, # not yet
EXPORT_UV, # ok
EXPORT_NORMALS, # not yet
EXPORT_NORMALS_HQ, # not yet
EXPORT_UV, # ok
EXPORT_MTL,
EXPORT_COPY_IMAGES,
EXPORT_APPLY_MODIFIERS, # ok
EXPORT_ROTX90, # wrong
EXPORT_APPLY_MODIFIERS, # ok
EXPORT_ROTX90, # wrong
EXPORT_BLEN_OBS,
EXPORT_GROUP_BY_OB,
EXPORT_GROUP_BY_MAT,
EXPORT_KEEP_VERT_ORDER,
EXPORT_POLYGROUPS,
EXPORT_CURVE_AS_NURBS,
EXPORT_SEL_ONLY, # ok
EXPORT_ALL_SCENES, # XXX not working atm
EXPORT_ANIMATION): # Not used
EXPORT_SEL_ONLY, # ok
EXPORT_ALL_SCENES, # XXX not working atm
EXPORT_ANIMATION): # Not used
base_name, ext = os.path.splitext(filepath)
context_name = [base_name, '', '', ext] # Base name, scene name, frame number, extension
context_name = [base_name, '', '', ext] # Base name, scene name, frame number, extension
orig_scene = context.scene
......@@ -732,22 +732,20 @@ def _write(context, filepath,
# Export all scenes.
for scene in export_scenes:
# scene.makeCurrent() # If already current, this is not slow.
# context = scene.getRenderingContext()
orig_frame = scene.frame_current
if EXPORT_ALL_SCENES: # Add scene name into the context_name
context_name[1] = '_%s' % bpy.path.clean_name(scene.name) # WARNING, its possible that this could cause a collision. we could fix if were feeling parranoied.
if EXPORT_ALL_SCENES: # Add scene name into the context_name
context_name[1] = '_%s' % bpy.path.clean_name(scene.name) # WARNING, its possible that this could cause a collision. we could fix if were feeling parranoied.
# Export an animation?
if EXPORT_ANIMATION:
scene_frames = range(scene.frame_start, scene.frame_end + 1) # Up to and including the end frame.
scene_frames = range(scene.frame_start, scene.frame_end + 1) # Up to and including the end frame.
else:
scene_frames = [orig_frame] # Dont export an animation.
scene_frames = [orig_frame] # Dont export an animation.
# Loop through all frames in the scene and export.
for frame in scene_frames:
if EXPORT_ANIMATION: # Add frame to the filepath.
if EXPORT_ANIMATION: # Add frame to the filepath.
context_name[2] = '_%.6d' % frame
scene.frame_set(frame, 0.0)
......
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