forked from bartvdbraak/blender
- Campbell Barton's (AKA Ideasman) obj importer script (some split improvements)
- I added support of material and texture import (.mtl files) Textures are assigned to faces and materials too.
This commit is contained in:
Jiri Hnidek
parent
f24be4c6ad
commit
317e067ecb
@ -31,11 +31,23 @@ Tooltip: 'Load a Wavefront OBJ File'
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# ***** END GPL LICENCE BLOCK *****
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# --------------------------------------------------------------------------
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WHITESPACE = [' ', '\n', '\r', '\t', '\f', '\v'] # used for the split function.
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NULL_MAT = '(null)' # Name for mesh's that have no mat set.
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MATLIMIT = 16
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DIR = ''
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#==============================================#
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# Return directory, where is file #
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#==============================================#
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def pathName(path,name):
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length=len(path)
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for CH in range(1, length):
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if path[length-CH:] == name:
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path = path[:length-CH]
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break
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return path
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#==============================================#
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# Strips the slashes from the back of a string #
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#==============================================#
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@ -48,38 +60,12 @@ def stripPath(path):
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#====================================================#
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# Strips the prefix off the name before writing #
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#====================================================#
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def stripName(name): # name is a string
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prefixDelimiter = '.'
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return name[ : name.find(prefixDelimiter) ]
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#================================================================#
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# Replace module deps 'string' for join and split # #
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# - Split splits a string into a list, and join does the reverse #
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#================================================================#
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def split(splitString, WHITESPACE):
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splitList = []
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charIndex = 0
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while charIndex < len(splitString):
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# Skip white space
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while charIndex < len(splitString):
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if splitString[charIndex] in WHITESPACE:
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charIndex += 1
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else:
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break
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# Gather text that is not white space and append to splitList
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startWordCharIndex = charIndex
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while charIndex < len(splitString):
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if splitString[charIndex] in WHITESPACE: break
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charIndex += 1
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# Now we have the first and last chars we can append the word to the list
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if charIndex != startWordCharIndex:
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splitList.append(splitString[startWordCharIndex:charIndex])
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return splitList
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#===============================#
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# Join list items into a string #
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#===============================#
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@ -95,8 +81,9 @@ def join(joinList):
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from Blender import *
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def load_obj(file):
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# This gets a mat or creates one of the requested name if none exist.
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#==================================================================================#
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# This gets a mat or creates one of the requested name if none exist. #
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#==================================================================================#
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def getMat(matName):
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# Make a new mat
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try:
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@ -104,6 +91,83 @@ def load_obj(file):
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except:
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return Material.New(matName)
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#==================================================================================#
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# This function sets textures defined in .mtl file #
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#==================================================================================#
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def load_image(mat, img_fileName, type, mesh):
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try:
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image = Image.Load(img_fileName)
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except:
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print "unable to open", img_fileName
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return
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texture = Texture.New(type)
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texture.setType('Image')
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texture.image = image
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# adds textures to faces (Textured/Alt-Z mode)
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for f in mesh.faces:
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if mesh.materials[f.mat].name == mat.name:
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f.image = image
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# adds textures for materials (rendering)
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if type == 'Ka':
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mat.setTexture(0, texture, Texture.TexCo.UV, Texture.MapTo.CMIR)
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if type == 'Kd':
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mat.setTexture(1, texture, Texture.TexCo.UV, Texture.MapTo.COL)
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if type == 'Ks':
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mat.setTexture(2, texture, Texture.TexCo.UV, Texture.MapTo.SPEC)
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#==================================================================================#
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# This function loads materials from .mtl file (have to be defined in obj file) #
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#==================================================================================#
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def load_mtl(dir, mtl_file, mesh):
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mtl_fileName = dir + mtl_file
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try:
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fileLines= open(mtl_fileName, 'r').readlines()
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except:
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print "unable to open", mtl_fileName
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return
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lIdx=0
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while lIdx < len(fileLines):
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l = fileLines[lIdx].split()
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# Detect a line that will be ignored
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if len(l) == 0:
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pass
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elif l[0] == '#' or len(l) == 0:
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pass
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elif l[0] == 'newmtl':
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currentMat = getMat(join(l[1:]))
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elif l[0] == 'Ka':
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currentMat.setMirCol(eval(l[1]), eval(l[2]), eval(l[3]))
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elif l[0] == 'Kd':
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currentMat.setRGBCol(eval(l[1]), eval(l[2]), eval(l[3]))
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elif l[0] == 'Ks':
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currentMat.setSpecCol(eval(l[1]), eval(l[2]), eval(l[3]))
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elif l[0] == 'Ns':
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currentMat.setEmit(eval(l[1])/100.0)
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elif l[0] == 'd':
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currentMat.setAlpha(eval(l[1]))
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elif l[0] == 'Tr':
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currentMat.setAlpha(eval(l[1]))
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elif l[0] == 'map_Ka':
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img_fileName = dir + l[1]
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load_image(currentMat, img_fileName, 'Ka', mesh)
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elif l[0] == 'map_Kd':
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img_fileName = dir + l[1]
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load_image(currentMat, img_fileName, 'Kd', mesh)
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elif l[0] == 'map_Ks':
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img_fileName = dir + l[1]
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load_image(currentMat, img_fileName, 'Ks', mesh)
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lIdx+=1
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#==================================================================================#
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# This loads data from .obj file #
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#==================================================================================#
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def load_obj(file):
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def applyMat(mesh, f, mat):
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# Check weather the 16 mat limit has been met.
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if len( mesh.materials ) >= MATLIMIT:
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@ -125,6 +189,10 @@ def load_obj(file):
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# Get the file name with no path or .obj
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fileName = stripName( stripPath(file) )
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mtl_fileName = ''
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DIR = pathName(file, stripPath(file))
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fileLines = open(file, 'r').readlines()
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mesh = NMesh.GetRaw() # new empty mesh
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@ -140,7 +208,7 @@ def load_obj(file):
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# Main loop
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lIdx = 0
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while lIdx < len(fileLines):
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l = split(fileLines[lIdx], WHITESPACE)
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l = fileLines[lIdx].split()
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# Detect a line that will be idnored
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if len(l) == 0:
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@ -170,7 +238,8 @@ def load_obj(file):
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vIdxLs = []
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vtIdxLs = []
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for v in l[1:]:
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objVert = split( v, ['/'] )
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#objVert = split( v, ['/'] )
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objVert = v.split('/', -1)
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# VERT INDEX
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vIdxLs.append(eval(objVert[0]) -1)
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@ -237,8 +306,15 @@ def load_obj(file):
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else:
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currentMat = getMat(join(l[1:])) # Use join in case of spaces
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elif l[0] == 'mtllib':
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mtl_fileName = l[1]
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lIdx+=1
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# Some material stuff
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if mtl_fileName != '':
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load_mtl(DIR, mtl_fileName, mesh)
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# We need to do this to put the last object.
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# All other objects will be put alredy
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if len(mesh.verts) > 0:
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