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[:]
103 def __init__(self, n):
106 def uvtex_unit_number(uvtex):
107 dot = uvtex.name.find('.')
108 if dot!=-1 and uvtex.name[dot+1:dot+5]=="unit" and uvtex.name[dot+5:].isdigit():
109 return int(uvtex.name[dot+5])
114 def __init__(self, m):
117 self.vertices = [Vertex(v) for v in self.vertices]
118 self.faces = [Face(f) for f in self.faces]
120 self.materials = self.materials[:]
122 self.uv_textures = [u for u in self.uv_textures if not u.name.endswith(".hidden")]
123 self.uv_textures.sort(key=uvtex_unit_number)
126 f.vertices = [self.vertices[i] for i in f.vertices]
129 for u in self.uv_textures:
130 r = u.data[f.index].uv_raw;
131 f.uvs.append([(r[i], r[i+1]) for i in range(0, 8, 2)])
133 self.edges = dict([(e.key, Edge(e)) for e in self.edges])
135 for k in f.edge_keys:
137 e.faces.append(self.faces[f.index])
140 self.lines = [Line(e) for e in self.edges.values() if not e.faces]
142 if self.use_auto_smooth:
143 smooth_limit = math.cos(self.auto_smooth_angle*math.pi/180)
147 for e in self.edges.values():
148 e.vertices = [self.vertices[i] for i in e.vertices]
149 e.check_smooth(smooth_limit)
151 def __getattr__(self, attr):
152 return getattr(self._mesh, attr)
154 def splice(self, other):
156 for m in other.materials:
157 if m in self.materials:
158 material_map.append(self.materials.index(m))
160 material_map.append(len(self.materials))
161 self.materials.append(m)
163 offset = len(self.vertices)
164 for v in other.vertices:
166 self.vertices.append(v)
168 offset = len(self.faces)
169 for f in other.faces:
171 f.material = material_map[f.material_index]
174 for e in other.edges.values():
175 e.key = make_edge_key(e.vertices[0].index, e.vertices[1].index)
176 self.edges[e.key] = e
178 self.lines += other.lines
180 def flatten_faces(self):
184 for e in self.edges.values():
187 def generate_material_uv(self):
188 self.uv_textures.append(FakeUvTex("material_tex"))
190 f.uvs.append([((f.material_index+0.5)/len(self.materials), 0.5)]*len(f.vertices))
192 def split_vertices(self, find_group_func, progress, *args):
194 for i in range(len(self.vertices)):
202 vg.append(find_group_func(v, f, *args))
207 progress.set_progress(i*0.5/len(self.vertices))
209 for i in range(len(self.vertices)):
210 if len(groups[i])==1:
213 for g in groups[i][1:]:
214 v = Vertex(self.vertices[i])
215 v.index = len(self.vertices)
216 self.vertices.append(v)
219 for j in range(len(f.edges)):
222 if self.vertices[i] not in e.vertices:
225 if e.other_face(f) not in g and len(e.faces)>=2:
231 del self.edges[e.key]
233 e.vertices[e.vertices.index(self.vertices[i])] = v
235 e.key = make_edge_key(e.vertices[0].index, e.vertices[1].index)
236 self.edges[e.key] = e
238 self.vertices[i].faces.remove(f)
239 f.vertices[f.vertices.index(self.vertices[i])] = v
243 progress.set_progress(0.5+i*0.5/len(self.vertices))
245 def split_smooth(self, progress = None):
246 self.split_vertices(self.find_smooth_group, progress)
248 def split_uv(self, index, progress = None):
249 self.split_vertices(self.find_uv_group, progress, index)
251 def find_smooth_group(self, vertex, face):
257 other = e.other_face(f)
258 if other not in vertex.faces:
268 def find_uv_group(self, vertex, face, index):
269 uv = face.uvs[index][face.vertices.index(vertex)]
272 for f in vertex.faces:
273 if not f.flag and f.uvs[index][f.vertices.index(vertex)]==uv:
278 def compute_normals(self):
279 for v in self.vertices:
281 v.normal = mathutils.Vector()
283 fv = f.pivot_vertices(v)
284 edge1 = fv[1].co-fv[0].co
285 edge2 = fv[-1].co-fv[0].co
287 if len(f.get_edge(fv[0], fv[1]).faces)==1:
289 if len(f.get_edge(fv[0], fv[-1]).faces)==1:
291 v.normal += f.normal*edge1.angle(edge2)*weight
294 # XXX Should use edges to compute normal
295 v.normal = mathutils.Vector(0, 0, 1)
297 def compute_uv(self):
298 for v in self.vertices:
301 i = f.vertices.index(v)
302 v.uvs = [u[i] for u in f.uvs]
304 def compute_tbn(self, index):
305 if not self.uv_textures:
308 for v in self.vertices:
309 v.tan = mathutils.Vector()
310 v.bino = mathutils.Vector()
312 fv = f.pivot_vertices(v)
313 uv0 = fv[0].uvs[index]
314 uv1 = fv[1].uvs[index]
315 uv2 = fv[-1].uvs[index]
320 edge1 = fv[1].co-fv[0].co
321 edge2 = fv[-1].co-fv[0].co
322 div = (du1*dv2-du2*dv1)
324 mul = edge1.angle(edge2)/div
325 v.tan += (edge1*dv2-edge2*dv1)*mul
326 v.bino += (edge2*du1-edge1*du2)*mul
333 def create_strip(self, face, max_len):
336 other = e.other_face(face)
337 if other and not other.flag:
344 vertices = face.pivot_vertices(*edge.vertices)
346 result = [vertices[-1], vertices[0]]
348 result = [vertices[-2], vertices[-1]]
351 vertices = face.pivot_vertices(*result[-2:])
355 if len(vertices)==4 and not k:
356 result.append(vertices[3])
357 result.append(vertices[2])
358 if len(vertices)==4 and k:
359 result.append(vertices[3])
361 if len(result)>=max_len:
364 edge = face.get_edge(*result[-2:])
366 next = edge.other_face(face)
367 if not next or next.flag: