diff options
author | Chris Want <cwant@ualberta.ca> | 2006-08-16 05:06:38 +0400 |
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committer | Chris Want <cwant@ualberta.ca> | 2006-08-16 05:06:38 +0400 |
commit | 1f68dfb499f93960c0a188d2b205a81cd3e6a999 (patch) | |
tree | 4300e13ec88d33c0ccda2018283e8dfb4fffc341 /release/scripts/vrml97_export.py | |
parent | 73f44f6fbb4ddd2b466f0d540581d3e86b3fbe28 (diff) |
A mesh from the Blender python Mesh module can sometimes have
a materials array with entries that are 'None'. Added some code
to check for this perverse situation.
Diffstat (limited to 'release/scripts/vrml97_export.py')
-rw-r--r-- | release/scripts/vrml97_export.py | 45 |
1 files changed, 32 insertions, 13 deletions
diff --git a/release/scripts/vrml97_export.py b/release/scripts/vrml97_export.py index 703460805da..3fa58339f04 100644 --- a/release/scripts/vrml97_export.py +++ b/release/scripts/vrml97_export.py @@ -455,8 +455,9 @@ class VRML2Export: if (me.vertexColors): if len(me.materials) > 0: mat = me.materials[0] - if (mat.mode & Blender.Material.Modes['VCOL_PAINT']): - self.vcolors = 1 + if mat: + if (mat.mode & Blender.Material.Modes['VCOL_PAINT']): + self.vcolors = 1 # check if object is wireframe only if ob.drawType == Blender.Object.DrawTypes.WIRE: @@ -557,26 +558,31 @@ class VRML2Export: issmooth = 0 maters = me.materials + nummats = self.getNumMaterials(me) # Vertex and Face colors trump materials and image textures if (self.facecolors or self.vcolors): - if len(maters) > 0: - self.writeShape(ob, me, 0, None) + if nummats > 0: + if maters[0]: + self.writeShape(ob, me, 0, None) + else: + self.writeShape(ob, me, -1, None) else: self.writeShape(ob, me, -1, None) # Do meshes with materials, possible with image textures - elif len(maters) > 0: + elif nummats > 0: for matnum in range(len(maters)): - images = [] - if me.faceUV: - images = self.getImages(me, matnum) - if len(images) > 0: - for image in images: - self.writeShape(ob, me, matnum, image) + if maters[matnum]: + images = [] + if me.faceUV: + images = self.getImages(me, matnum) + if len(images) > 0: + for image in images: + self.writeShape(ob, me, matnum, image) + else: + self.writeShape(ob, me, matnum, None) else: self.writeShape(ob, me, matnum, None) - else: - self.writeShape(ob, me, matnum, None) else: if me.faceUV: images = self.getImages(me, -1) @@ -604,6 +610,15 @@ class VRML2Export: imageNames[imName]=1 return images + def getNumMaterials(self, me): + # Oh silly Blender, why do you sometimes have 'None' as + # a member of the me.materials array? + num = 0 + for mat in me.materials: + if mat: + num = num + 1 + return num + def writeCoordinates(self, me, meshName): coordName = "coord_%s" % (meshName) # look up coord name, use it if available @@ -631,6 +646,10 @@ class VRML2Export: self.writeIndented("\n") def writeShape(self, ob, me, matnum, image): + # Note: at this point it is assumed for matnum!=-1 that the + # material in me.materials[matnum] is not equal to 'None'. + # Such validation should be performed by the function that + # calls this one. self.writeIndented("Shape {\n",1) self.writeIndented("appearance Appearance {\n", 1) |