4 def make_edge_key(i1, i2):
5 return (min(i1, i2), max(i1, i2))
8 def __init__(self, me):
10 self._medge = me._medge
11 self.vertices = me.vertices[:]
12 self.smooth = me.smooth
18 def __getattr__(self, attr):
19 return getattr(self._medge, attr)
21 def check_smooth(self, limit):
22 if len(self.faces)!=2:
25 d = self.faces[0].normal.dot(self.faces[1].normal)
26 self.smooth = ((d>limit and self.faces[0].use_smooth and self.faces[1].use_smooth) or d>0.99995)
28 def other_face(self, f):
29 if f.index==self.faces[0].index:
30 if len(self.faces)>=2:
39 def __init__(self, mv):
40 if mv.__class__==Vertex:
41 self._mvert = mv._mvert
42 self.normal = mv.normal
54 def __getattr__(self, attr):
55 return getattr(self._mvert, attr)
57 def __cmp__(self, other):
60 return cmp(self.index, other.index)
64 def __init__(self, mf):
67 self.vertices = mf.vertices[:]
72 def __getattr__(self, attr):
73 return getattr(self._mface, attr)
75 def __cmp__(self, other):
78 return cmp(self.index, other.index)
80 def pivot_vertices(self, *vt):
81 flags = [(v in vt) for v in self.vertices]
82 l = len(self.vertices)
84 if flags[i] and not flags[(i+l-1)%l]:
85 return self.vertices[i:]+self.vertices[:i]
87 def get_edge(self, v1, v2):
88 key = make_edge_key(v1.index, v2.index)
92 raise KeyError("No edge %s"%(key,))
96 def __init__(self, e):
98 self.vertices = e.vertices[:]
102 def uvtex_unit_number(uvtex):
103 dot = uvtex.name.find('.')
104 if dot!=-1 and uvtex.name[dot+1:dot+5]=="unit" and uvtex.name[dot+5:].isdigit():
105 return int(uvtex.name[dot+5])
110 def __init__(self, m):
113 self.vertices = [Vertex(v) for v in self.vertices]
114 self.faces = [Face(f) for f in self.faces]
116 self.materials = self.materials[:]
118 self.uv_textures = [u for u in self.uv_textures if not u.name.endswith(".hidden")]
119 self.uv_textures.sort(key=uvtex_unit_number)
122 f.vertices = [self.vertices[i] for i in f.vertices]
125 for u in self.uv_textures:
126 r = u.data[f.index].uv_raw;
127 f.uvs.append([(r[i], r[i+1]) for i in range(0, 8, 2)])
129 self.edges = dict([(e.key, Edge(e)) for e in self.edges])
131 for k in f.edge_keys:
133 e.faces.append(self.faces[f.index])
136 self.lines = [Line(e) for e in self.edges.values() if not e.faces]
138 if self.use_auto_smooth:
139 smooth_limit = math.cos(self.auto_smooth_angle*math.pi/180)
143 for e in self.edges.values():
144 e.vertices = [self.vertices[i] for i in e.vertices]
145 e.check_smooth(smooth_limit)
147 def __getattr__(self, attr):
148 return getattr(self._mesh, attr)
150 def splice(self, other):
152 for m in other.materials:
153 if m in self.materials:
154 material_map.append(self.materials.index(m))
156 material_map.append(len(self.materials))
157 self.materials.append(m)
159 offset = len(self.vertices)
160 for v in other.vertices:
162 self.vertices.append(v)
164 offset = len(self.faces)
165 for f in other.faces:
167 f.material = material_map[f.material_index]
170 for e in other.edges.values():
171 e.key = make_edge_key(e.vertices[0].index, e.vertices[1].index)
172 self.edges[e.key] = e
174 self.lines += other.lines
176 def flatten_faces(self):
180 for e in self.edges.values():
183 def generate_material_uv(self):
185 f.uv = ([(f.material_index+0.5)/len(self.materials), 0.5],)*len(f.vertices)
188 def split_vertices(self, find_group_func, progress, *args):
190 for i in range(len(self.vertices)):
198 vg.append(find_group_func(v, f, *args))
203 progress.set_progress(i*0.5/len(self.vertices))
205 for i in range(len(self.vertices)):
206 if len(groups[i])==1:
209 for g in groups[i][1:]:
210 v = Vertex(self.vertices[i])
211 v.index = len(self.vertices)
212 self.vertices.append(v)
215 for j in range(len(f.edges)):
218 if self.vertices[i] not in e.vertices:
221 if e.other_face(f) not in g and len(e.faces)>=2:
227 del self.edges[e.key]
229 e.vertices[e.vertices.index(self.vertices[i])] = v
231 e.key = make_edge_key(e.vertices[0].index, e.vertices[1].index)
232 self.edges[e.key] = e
234 self.vertices[i].faces.remove(f)
235 f.vertices[f.vertices.index(self.vertices[i])] = v
239 progress.set_progress(0.5+i*0.5/len(self.vertices))
241 def split_smooth(self, progress = None):
242 self.split_vertices(self.find_smooth_group, progress)
244 def split_uv(self, index, progress = None):
245 self.split_vertices(self.find_uv_group, progress, index)
247 def find_smooth_group(self, vertex, face):
253 other = e.other_face(f)
254 if other not in vertex.faces:
264 def find_uv_group(self, vertex, face, index):
265 uv = face.uvs[index][face.vertices.index(vertex)]
268 for f in vertex.faces:
269 if not f.flag and f.uvs[index][f.vertices.index(vertex)]==uv:
274 def compute_normals(self):
275 for v in self.vertices:
277 v.normal = mathutils.Vector()
279 fv = f.pivot_vertices(v)
280 edge1 = fv[1].co-fv[0].co
281 edge2 = fv[-1].co-fv[0].co
283 if len(f.get_edge(fv[0], fv[1]).faces)==1:
285 if len(f.get_edge(fv[0], fv[-1]).faces)==1:
287 v.normal += f.normal*edge1.angle(edge2)*weight
290 # XXX Should use edges to compute normal
291 v.normal = mathutils.Vector(0, 0, 1)
293 def compute_uv(self):
294 for v in self.vertices:
297 i = f.vertices.index(v)
298 v.uvs = [u[i] for u in f.uvs]
300 def compute_tbn(self, index):
301 if not self.uv_textures:
304 for v in self.vertices:
305 v.tan = mathutils.Vector()
306 v.bino = mathutils.Vector()
308 fv = f.pivot_vertices(v)
309 uv0 = fv[0].uvs[index]
310 uv1 = fv[1].uvs[index]
311 uv2 = fv[-1].uvs[index]
316 edge1 = fv[1].co-fv[0].co
317 edge2 = fv[-1].co-fv[0].co
318 div = (du1*dv2-du2*dv1)
320 mul = edge1.angle(edge2)/div
321 v.tan += (edge1*dv2-edge2*dv1)*mul
322 v.bino += (edge2*du1-edge1*du2)*mul
329 def create_strip(self, face, max_len):
332 other = e.other_face(face)
333 if other and not other.flag:
340 vertices = face.pivot_vertices(*edge.vertices)
342 result = [vertices[-1], vertices[0]]
344 result = [vertices[-2], vertices[-1]]
347 vertices = face.pivot_vertices(*result[-2:])
351 if len(vertices)==4 and not k:
352 result.append(vertices[3])
353 result.append(vertices[2])
354 if len(vertices)==4 and k:
355 result.append(vertices[3])
357 if len(result)>=max_len:
360 edge = face.get_edge(*result[-2:])
362 next = edge.other_face(face)
363 if not next or next.flag: