#!BPY
-# $Id$
"""
Name: 'MSP GL Mesh (.mesh)...'
def make_edge_key(i1, i2):
return (min(i1, i2), max(i1, i2))
+progress_range = (0.0, 1.0, "")
+
+def set_progress(value):
+ Blender.Window.DrawProgressBar(progress_range[0]+progress_range[1]*value, progress_range[2])
+
+def set_progress_range(low, high, text):
+ global progress_range
+ progress_range = (low, high-low, text)
+ set_progress(0.0)
+
class Edge:
def __init__(self, me):
if me.__class__==Edge:
- self._medge=me._medge
- self.smooth=me.smooth
+ self._medge = me._medge
+ self.v1 = me.v1
+ self.v2 = me.v2
+ self.smooth = me.smooth
else:
- self._medge=me
- self.smooth=False
- self.faces=[]
+ self._medge = me
+ self.smooth = False
+ self.faces = []
def __getattr__(self, attr):
return getattr(self._medge, attr)
- def __cmp__(self, other):
- return self is other
-
def check_smooth(self, limit):
if len(self.faces)!=2:
return
- d=Blender.Mathutils.DotVecs(self.faces[0].no, self.faces[1].no)
+ d = Blender.Mathutils.DotVecs(self.faces[0].no, self.faces[1].no)
if (d>limit and self.faces[0].smooth and self.faces[1].smooth) or d>0.999:
- self.smooth=True
+ self.smooth = True
def other_face(self, f):
if f.index==self.faces[0].index:
class Vertex:
def __init__(self, mv):
if mv.__class__==Vertex:
- self._mvert=mv._mvert
- self.uv=mv.uv
+ self._mvert = mv._mvert
+ self.no = mv.no
+ self.uv = mv.uv
else:
- self._mvert=mv
- self.uv=None
- self.orig_index=self._mvert.index
- self.flag=False
- self.faces=[]
+ self._mvert = mv
+ self.uv = None
+ self.flag = False
+ self.faces = []
+ self.tan = None
+ self.bino = None
def __getattr__(self, attr):
return getattr(self._mvert, attr)
def __cmp__(self, other):
+ if other is None:
+ return 1
return cmp(self.index, other.index)
def __str__(self):
return "<Vert %d (%.4f, %.4f, %.4f) (%.4f, %.4f, %.4f)>"%(self.index, self.co[0], self.co[1], self.co[2], self.no[0], self.no[1], self.no[2])
- __repr__=__str__
+ __repr__ = __str__
class Face:
def __init__(self, mf):
- self._mface=mf
- #self.smooth_group=None
- self.edges=[]
- self.verts=[v for v in mf.verts]
- self.flag=False
+ self._mface = mf
+ self.edges = []
+ self.verts = [v for v in mf.verts]
+ self.flag = False
def __getattr__(self, attr):
return getattr(self._mface, attr)
def __cmp__(self, other):
+ if other is None:
+ return 1
return cmp(self.index, other.index)
def __str__(self):
return "<Face %d (%s)>"%(self.index, " ".join([str(v.index) for v in self.verts]))
- __repr__=__str__
-
- def get_vertices_from(self, reverse, *vt):
- verts=self.verts[:]
- if reverse:
- verts.reverse()
- indices=[u.index for u in vt]
- flags=[(v.index in indices) for v in verts]
- l=len(verts)
+ __repr__ = __str__
+
+ def pivot_vertices(self, *vt):
+ flags = [(v in vt) for v in self.verts]
+ l = len(self.verts)
for i in range(l):
if flags[i] and not flags[(i+l-1)%l]:
- return verts[i:]+verts[:i]
+ return self.verts[i:]+self.verts[:i]
def get_edge(self, v1, v2):
- key=make_edge_key(v1.index, v2.index)
+ key = make_edge_key(v1.index, v2.index)
for e in self.edges:
if e.key==key:
return e
+ raise KeyError, "No edge %s"%(key,)
-class SmoothGroup:
- def __init__(self, index):
- self.index=index
- self.faces=[]
- self.verts=[]
+class Line:
+ def __init__(self, e):
+ self.edge = e
+ self.verts = [e.v1, e.v2]
+ self.flag = False
- def find_vertices(self):
- vert_map={}
- for f in self.faces:
- for i in range(len(f.verts)):
- v=f.verts[i]
- if v.index not in vert_map:
- vt=Vertex(v)
- vt.index=len(self.verts)
- self.verts.append(vt)
-
- vert_map[v.index]=vt
- vt.no=Blender.Mathutils.Vector(f.no)
- else:
- vt=vert_map[v.index]
- vt.no+=f.no
- f.verts[i]=vt
-
- for v in self.verts:
- v.no.normalize()
-
- def separate_uv(self):
- copies={}
- for f in self.faces:
- for i in range(len(f.verts)):
- v=f.verts[i]
- if not v.uv:
- v.uv=f.uv[i]
- elif f.uv[i]!=v.uv:
- if v.index not in copies:
- copies[v.index]=[]
-
- vt=None
- for w in copies[v.index]:
- if w.uv==f.uv[i]:
- vt=w
- break
-
- if not vt:
- vt=Vertex(v)
- vt.index=len(self.verts)
- vt.uv=f.uv[i]
- self.verts.append(vt)
- copies[v.index].append(vt)
-
- f.verts[i]=vt
-
- def create_edges(self):
- edge_map={}
- for f in self.faces:
- vert_map=dict([(v.orig_index, v) for v in f.verts])
- for i in range(len(f.edges)):
- v1=vert_map[f.edges[i].v1.index]
- v2=vert_map[f.edges[i].v2.index]
- key=tuple(sorted((v1.index, v2.index)))
-
- if key in edge_map:
- e=edge_map[key]
- else:
- e=Edge(f.edges[i])
- edge_map[key]=e
- e.v1=v1
- e.v2=v2
- e.key=key
+ def __str__(self):
+ return "<Line (%d %d)>"%(self.verts[0].index, self.verts[1].index)
- f.edges[i]=e
- e.faces.append(f)
+ __repr__ = __str__
class Mesh:
def __init__(self, m):
- self._mesh=m
- self.verts=[Vertex(v) for v in m.verts]
- self.faces=[Face(f) for f in m.faces]
+ self._mesh = m
+ self.verts = [Vertex(v) for v in m.verts]
+ self.faces = [Face(f) for f in m.faces]
+ self.materials = m.materials[:]
for f in self.faces:
for i in range(len(f.verts)):
- f.verts[i]=self.verts[f.verts[i].index]
+ f.verts[i] = self.verts[f.verts[i].index]
f.verts[i].faces.append(f)
- self.edges=dict([(e.key, Edge(e)) for e in m.edges])
+ self.edges = dict([(e.key, Edge(e)) for e in m.edges])
for f in self.faces:
for k in f.edge_keys:
- e=self.edges[k]
+ e = self.edges[k]
e.faces.append(self.faces[f.index])
f.edges.append(e)
- smooth_limit=math.cos(m.degr*math.pi/180)
+ self.lines = [Line(e) for e in self.edges.itervalues() if not e.faces]
+
+ if m.mode&Blender.Mesh.Modes.AUTOSMOOTH:
+ smooth_limit = math.cos(m.degr*math.pi/180)
+ else:
+ smooth_limit = -1
+
for e in self.edges.itervalues():
- e.v1=self.verts[e.v1.index]
- e.v2=self.verts[e.v2.index]
+ e.v1 = self.verts[e.v1.index]
+ e.v2 = self.verts[e.v2.index]
e.check_smooth(smooth_limit)
def __getattr__(self, attr):
return getattr(self._mesh, attr)
- def split_vertices(self, debug=False):
- groups=[]
- for v in self.verts:
+ def splice(self, other):
+ material_map = []
+ for m in other.materials:
+ if m in self.materials:
+ material_map.append(self.materials.index(m))
+ else:
+ material_map.append(len(self.materials))
+ self.materials.append(m)
+
+ offset = len(self.verts)
+ for v in other.verts:
+ v.index += offset
+ self.verts.append(v)
+
+ offset = len(self.faces)
+ for f in other.faces:
+ f.index += offset
+ f.mat = material_map[f.mat]
+ self.faces.append(f)
+
+ for e in other.edges.itervalues():
+ e.key = make_edge_key(e.v1.index, e.v2.index)
+ self.edges[e.key] = e
+
+ self.lines += other.lines
+
+ def generate_material_uv(self):
+ for f in self.faces:
+ f.uv = ([(f.mat+0.5)/len(self.materials), 0.5],)*len(f.verts)
+ self.faceUV = True
+
+ def split_vertices(self, find_group_func, debug):
+ groups = []
+ for i in range(len(self.verts)):
+ v = self.verts[i]
for f in v.faces:
- f.flag=False
+ f.flag = False
- vg=[]
+ vg = []
for f in v.faces:
if not f.flag:
- vg.append(self.find_group(v, f))
+ vg.append(find_group_func(v, f))
groups.append(vg)
+ set_progress(i*0.5/len(self.verts))
+
for i in range(len(self.verts)):
if len(groups[i])==1:
continue
print "Vertex %s has %d groups"%(self.verts[i], len(groups[i]))
for g in groups[i][1:]:
- v=Vertex(self.verts[i])
- v.index=len(self.verts)
+ v = Vertex(self.verts[i])
+ v.index = len(self.verts)
self.verts.append(v)
if debug:
- print " -> %d"%v.index
+ print " -> %d %s"%(v.index, [f.index for f in g])
for f in g:
for j in range(len(f.edges)):
- e=f.edges[j]
+ e = f.edges[j]
if e.v1!=self.verts[i] and e.v2!=self.verts[i]:
continue
if debug:
print " Splitting edge %s with faces %s"%(e.key, e.faces)
- old=e
- if not e.smooth:
- if len(e.faces)>=2:
- k=e.faces.index(f)
- e.faces.remove(f)
- e=Edge(e)
- f.edges[j]=e
- e.faces.append(f)
- else:
- del self.edges[e.key]
+ if e.other_face(f) not in g and len(e.faces)>=2:
+ k = e.faces.index(f)
+ e.faces.remove(f)
+ e = Edge(e)
+ f.edges[j] = e
+ e.faces.append(f)
+ else:
+ del self.edges[e.key]
if e.v1==self.verts[i]:
- e.v1=v
+ e.v1 = v
elif e.v2==self.verts[i]:
- e.v2=v
+ e.v2 = v
- e.key=make_edge_key(e.v1.index, e.v2.index)
- if not e.smooth:
- self.edges[e.key]=e
+ e.key = make_edge_key(e.v1.index, e.v2.index)
+ self.edges[e.key] = e
self.verts[i].faces.remove(f)
- f.verts[f.verts.index(self.verts[i])]=v
+ f.verts[f.verts.index(self.verts[i])] = v
v.faces.append(f)
- def find_group(self, vert, face):
- face_indices=[f.index for f in vert.faces]
+ set_progress(0.5+i*0.5/len(self.verts))
+
+ def split_smooth(self, debug = False):
+ self.split_vertices(self.find_smooth_group, debug)
- face.flag=True
- queue=[face]
+ def split_uv(self, debug = False):
+ self.split_vertices(self.find_uv_group, debug)
+
+ def find_smooth_group(self, vert, face):
+ face.flag = True
+ queue = [face]
for f in queue:
for e in f.edges:
- other=e.other_face(f)
- if not other or other.index not in face_indices:
+ other = e.other_face(f)
+ #if not other or other.index not in face_indices:
+ if other not in vert.faces:
continue
if e.smooth:
if not other.flag:
- other.flag=True
+ other.flag = True
queue.append(other)
return queue
+ def find_uv_group(self, vert, face):
+ uv = face.uv[face.verts.index(vert)]
+ face.flag = True
+ group = [face]
+ for f in vert.faces:
+ if not f.flag and f.uv[f.verts.index(vert)]==uv:
+ f.flag = True
+ group.append(f)
+ return group
+
def compute_normals(self):
for v in self.verts:
- if not v.faces:
- print "WTF? Vertex %s without faces?"%v
- v.no=Blender.Mathutils.Vector()
- for f in v.faces:
- v.no+=f.no
- v.no.normalize()
+ if v.faces:
+ v.no = Blender.Mathutils.Vector()
+ for f in v.faces:
+ v.no += f.no
+ v.no.normalize()
+ else:
+ # XXX Should use edges to compute normal
+ v.no = Blender.Mathutils.Vector(0, 0, 1)
- def create_strip(self, face, reverse, debug):
- edge=None
+ def compute_uv(self):
+ for v in self.verts:
+ if v.faces:
+ v.uv = v.faces[0].uv[v.faces[0].verts.index(v)]
+
+ def compute_tbn(self):
+ for v in self.verts:
+ v.tan = Blender.Mathutils.Vector()
+ v.bino = Blender.Mathutils.Vector()
+ for f in v.faces:
+ fverts = f.pivot_vertices(False, v)
+ v1 = fverts[1]
+ v2 = fverts[-1]
+ du1 = v1.uv[0]-v.uv[0]
+ du2 = v2.uv[0]-v.uv[0]
+ dv1 = v1.uv[1]-v.uv[1]
+ dv2 = v2.uv[1]-v.uv[1]
+ div = du1*dv2-du2*dv1
+ edge1 = fverts[1].co-fverts[0].co
+ edge2 = fverts[-1].co-fverts[0].co
+ v.tan += (edge1*dv2-edge2*dv1)/div
+ v.bino += (edge2*du1-edge1*du2)/div
+ v.tan.normalize()
+ v.bino.normalize()
+
+ def create_strip(self, face, max_len, debug):
+ edge = None
for e in face.edges:
- other=e.other_face(face)
+ other = e.other_face(face)
if other and not other.flag:
- edge=e
+ edge = e
break
if not edge:
return None
if debug:
- print "Starting strip from %s, edge %s, reverse=%s"%([v.index for v in face.verts], (edge.v1.index, edge.v2.index), reverse)
+ print "Starting strip from %s, edge %s"%([v.index for v in face.verts], (edge.v1.index, edge.v2.index))
- verts=face.get_vertices_from(reverse, edge.v1, edge.v2)
+ verts = face.pivot_vertices(edge.v1, edge.v2)
if len(verts)==3:
- result=[verts[-1], verts[0]]
+ result = [verts[-1], verts[0]]
else:
- result=[verts[-2], verts[-1]]
+ result = [verts[-2], verts[-1]]
while 1:
- verts=face.get_vertices_from(reverse, *result[-2:])
- k=len(result)%2
if debug:
print " Adding %s"%face
- face.flag=True
+ verts = face.pivot_vertices(*result[-2:])
+ k = len(result)%2
+
+ face.flag = True
if len(verts)==4 and not k:
result.append(verts[3])
result.append(verts[2])
if len(verts)==4 and k:
result.append(verts[3])
- edge=face.get_edge(*result[-2:])
+ if len(result)>=max_len:
+ if debug:
+ print " Max length exceeded"
+ break
+
+ edge = face.get_edge(*result[-2:])
if debug:
print " Next edge is %s"%(edge.key, )
- next=edge.other_face(face)
+ next = edge.other_face(face)
if not next or next.flag:
break
- face=next
+ face = next
if debug:
print " %s"%[v.index for v in result]
return result
-class Exporter:
+class VertexCache:
+ def __init__(self, size):
+ self.size = size
+ self.slots = [-1]*self.size
+
+ def fetch(self, v):
+ hit = v.index in self.slots
+ if hit:
+ self.slots.remove(v.index)
+ self.slots.append(v.index)
+ if not hit:
+ del self.slots[0]
+ return hit
+
+ def fetch_strip(self, strip):
+ hits = 0
+ for v in strip:
+ if self.fetch(v):
+ hits += 1
+ return hits
+
+ def test_strip(self, strip):
+ hits = 0
+ for i in range(len(strip)):
+ if i>=self.size:
+ break
+ if strip[i].index in self.slots[i:]:
+ hits += 1
+ return hits
+
+
+class OutFile:
def __init__(self, fn):
- self.filename=fn
if fn==None:
- self.out_file=sys.stdout
+ self.file = sys.stdout
else:
- self.out_file=file(fn, "w")
- self.use_strips=True
- self.use_degen_tris=True
- self.optimize_locality=True
- self.debug=False
- self.strip_debug=False
- self.smooth_debug=False
-
- """def find_smooth_group(self, face, sg):
- face.smooth_group=sg
- sg.faces.append(face)
- queue=[face]
- while queue:
- cur=queue.pop(0)
- for e in cur.edges:
- if e.smooth:
- other=e.other_face(cur)
- if other and not other.smooth_group:
- other.smooth_group=sg
- sg.faces.append(other)
- queue.append(other)"""
-
- """def create_strip(self, face, reverse):
- edge=None
- for e in face.edges:
- other=e.other_face(face)
- if other and "other.smooth_group.index==face.smooth_group.index" and not other.flag:
- edge=e
- break
+ self.file = open(fn, "w")
+ self.indent = 0
+
+ def make(self, kwd, *params):
+ pstr = ""
+ for p in params:
+ if type(p)==float:
+ pstr += " %.6g"%p
+ else:
+ pstr += " %s"%p
+ return "%s%s"%(kwd, pstr)
- if not edge:
- return None
+ def write(self, kwd, *params):
+ self.file.write("%s%s;\n"%('\t'*self.indent, self.make(kwd, *params)))
- if self.strip_debug:
- print "Starting strip from %s, edge %s, reverse=%s"%([v.index for v in face.verts], edge.key, reverse)
+ def begin(self, kwd, *params):
+ i = '\t'*self.indent
+ self.file.write("%s%s\n%s{\n"%(i, self.make(kwd, *params), i))
+ self.indent += 1
- verts=face.get_vertices_from(reverse, edge.v1, edge.v2)
- if len(verts)==3:
- result=[verts[-1], verts[0]]
- else:
- result=[verts[-2], verts[-1]]
+ def end(self):
+ self.indent -= 1
+ self.file.write("%s};\n"%('\t'*self.indent))
- while 1:
- verts=face.get_vertices_from(reverse, *result[-2:])
- k=len(result)%2
- if self.strip_debug:
- print " Adding %s"%[v.index for v in verts]
- face.flag=True
- if len(verts)==4 and not k:
- result.append(verts[3])
- result.append(verts[2])
- if len(verts)==4 and k:
- result.append(verts[3])
-
- edge=face.get_edge(*result[-2:])
+class Exporter:
+ def __init__(self, fn):
+ self.out_file = OutFile(fn)
+ self.use_strips = True
+ self.use_degen_tris = True
+ self.max_strip_len = 1024
+ self.optimize_cache = False
+ self.cache_size = 64
+ self.export_lines = True
+ self.tbn_vecs = False
+ self.compound = False
+ self.object = False
+ self.material_tex = False
+ self.debug = False
+ self.strip_debug = False
+ self.split_debug = False
+
+ def stripify(self, mesh):
+ for f in mesh.faces:
+ f.flag = False
- if self.strip_debug:
- print " Next edge is %s"%((edge.v1.index, edge.v2.index), )
+ faces_done = 0
+ strips = []
+ loose = []
- next=edge.other_face(face)
- if not next or next.flag:
- break
- face=next
+ cache = None
+ if self.optimize_cache:
+ cache = VertexCache(self.cache_size)
- if self.strip_debug:
- print " %s"%[v.index for v in result]
+ island = []
+ island_strips = []
+ while 1:
+ if not island:
+ queue = []
+ for f in mesh.faces:
+ if not f.flag:
+ f.flag = True
+ queue.append(f)
+ break
- return result"""
-
- def get_locality(self, strip):
- total=0
- for i in range(1, len(strip)):
- if strip[i].index!=strip[i-1].index:
- total+=1.0/(abs(strip[i].index-strip[i-1].index))
- return total/len(strip)
-
- def get_followers(self, strip):
- result={}
- for i in range(len(strip)-1):
- v=strip[i]
- n=strip[i+1]
- if v.index!=n.index:
- if v.index not in result:
- result[v.index]={}
- if n.index not in result[v.index]:
- result[v.index][n.index]=1
- else:
- result[v.index][n.index]+=1
- return result
+ if not queue:
+ break
- def export(self):
- scene=bpy.data.scenes.active
+ while queue:
+ f = queue[0]
+ del queue[0]
+ island.append(f)
- obj=scene.objects.active
- if obj.getType()!="Mesh":
- raise Exception, "Can only export Mesh data"
+ for e in f.edges:
+ other = e.other_face(f)
+ if other and not other.flag:
+ other.flag = True
+ queue.append(other)
- mesh=Mesh(obj.getData(mesh=True))
+ for f in island:
+ f.flag = False
- if self.debug:
- ntris=sum([len(f.verts)-2 for f in mesh.faces])
- print "Starting with %d vertices, %d faces (%d triangles) and %d edges"%(len(mesh.verts), len(mesh.faces), ntris, len(mesh.edges))
+ best = 5
+ face = None
+ for f in island:
+ if f.flag:
+ continue
+ score = 0
+ for e in f.edges:
+ other = e.other_face(f)
+ if other and not other.flag:
+ score += 1
+ if score>0 and score<best:
+ face = f
+ best = score
+
+ if not face:
+ while island_strips:
+ best = 0
+ if cache:
+ best_hits = 0
+ for i in range(len(island_strips)):
+ hits = cache.test_strip(island_strips[i])
+ if hits>best_hits:
+ best = i
+ best_hits = hits
+
+ s = island_strips[best]
+ del island_strips[best]
+ strips.append(s)
+
+ if cache:
+ cache.fetch_strip(s)
+
+ faces_done += len(island)
+ set_progress(float(faces_done)/len(mesh.faces))
+
+ loose += [f for f in island if not f.flag]
+ for f in island:
+ f.flag = True
+
+ island = []
+ island_strips = []
+ continue
- mesh.split_vertices(self.smooth_debug)
+ strip = mesh.create_strip(face, self.max_strip_len, self.strip_debug)
+ if strip:
+ island_strips.append(strip)
if self.debug:
- ntris=sum([len(f.verts)-2 for f in mesh.faces])
- print "After splitting %d vertices, %d faces (%d triangles) and %d edges"%(len(mesh.verts), len(mesh.faces), ntris, len(mesh.edges))
+ print "%d strips:"%len(strips)
+ for i in range(len(strips)):
+ print " %d: %d indices"%(i, len(strips[i]))
+ print "%d loose faces"%len(loose)
+ nind = sum([len(s) for s in strips])+sum([len(f.verts) for f in loose])
+ print "%d indices total"%nind
- mesh.compute_normals()
+ if cache:
+ cache = VertexCache(self.cache_size)
+ total_hits = 0
- #return
+ if self.use_degen_tris and strips:
+ big_strip = []
- """faces=[Face(f) for f in mesh.faces]
+ for s in strips:
+ if big_strip:
+ glue = [big_strip[-1], s[0]]
+ if len(big_strip)%2:
+ glue += [s[0]]
+
+ big_strip += glue
+ if cache:
+ total_hits += cache.fetch_strip(glue)
+
+ big_strip += s
+ if cache:
+ total_hits += cache.fetch_strip(s)
+
+ for f in loose:
+ if len(big_strip)%2:
+ order = (-1, -2, 0, 1)
+ else:
+ order = (0, 1, -1, -2)
+ verts = [f.verts[i] for i in order[:len(f.verts)]]
+
+ if big_strip:
+ glue = [big_strip[-1], verts[0]]
+ big_strip += glue
+ if cache:
+ total_hits += cache.fetch_strip(glue)
+
+ big_strip += verts
+ if cache:
+ total_hits += cache.fetch_strip(verts)
+
+ strips = [big_strip]
+ loose = []
+
+ if self.debug:
+ nind = len(big_strip)
+ print "Big strip has %d indices"%nind
+ if self.optimize_cache:
+ print "%d cache hits"%total_hits
- edges=dict([(e.key, Edge(e)) for e in mesh.edges])
- for f in faces:
- for e in f.edge_keys:
- edges[e].faces.append(f)
- f.edges.append(edges[e])
+ if self.debug:
+ ntris = sum([len(f.verts)-2 for f in mesh.faces])
+ print "%.2f indices per triangle"%(float(nind)/max(ntris, 1))
- smooth_limit=math.cos(mesh.degr*math.pi/180)
- for e in edges.itervalues():
- e.check_smooth(smooth_limit)
+ return strips, loose
- if self.debug:
- ntris=sum([len(f.verts)-2 for f in faces])
- print "%d faces (%d triangles), %d edges"%(len(faces), ntris, len(edges))
-
- smooth_groups=[]
- for f in faces:
- if not f.smooth_group:
- sg=SmoothGroup(len(smooth_groups))
- smooth_groups.append(sg)
- self.find_smooth_group(f, sg)
-
- for sg in smooth_groups:
- sg.find_vertices()
- if mesh.faceUV:
- sg.separate_uv()
- sg.create_edges()
-
- verts=[]
- for sg in smooth_groups:
- for v in sg.verts:
- v.index=len(verts)
- verts.append(v)
+ def export(self):
+ scene = bpy.data.scenes.active
+
+ objs = Blender.Object.GetSelected()
+ if not objs:
+ raise Exception, "Nothing to export"
+ for o in objs:
+ if o.getType()!="Mesh":
+ raise Exception, "Can only export Mesh data"
+
+ Blender.Window.DrawProgressBar(0.0, "Preparing");
+
+ mesh = Blender.Mesh.New("export_tmp")
+ mesh.getFromObject(objs[0])
+ mesh = Mesh(mesh)
+ if self.compound:
+ # Must keep a ref to each Blender mesh
+ bmeshes = []
+ for o in objs[1:]:
+ bmesh = Blender.Mesh.New("export_tmp")
+ bmesh.getFromObject(o)
+ bmeshes.append(bmesh)
+ mesh.splice(Mesh(bmesh))
if self.debug:
- print "%d smooth groups:"%len(smooth_groups)
- for i in range(len(smooth_groups)):
- sg=smooth_groups[i]
- print " %d: %d faces, %d vertices"%(i, len(sg.faces), len(sg.verts))
- print "%d vertices total"%len(verts)"""
+ ntris = sum([len(f.verts)-2 for f in mesh.faces])
+ print "Starting with %d vertices, %d faces (%d triangles) and %d edges"%(len(mesh.verts), len(mesh.faces), ntris, len(mesh.edges))
- strips=[]
- if self.use_strips:
- for f in mesh.faces:
- f.flag=False
+ set_progress_range(0.05, 0.35, "Smoothing")
+ mesh.split_smooth(self.split_debug)
- while 1:
- best=5
- face=None
- for f in mesh.faces:
- if f.flag:
- continue
- score=0
- for e in f.edges:
- other=e.other_face(f)
- if other and not other.flag:
- score+=1
- if score>0 and score<best:
- face=f
- best=score
+ if self.debug:
+ print "After smooth splitting %d vertices and %d edges"%(len(mesh.verts), len(mesh.edges))
- if not face:
- break
+ mesh.compute_normals()
- strip=mesh.create_strip(face, self.use_degen_tris and sum([len(s) for s in strips])%2, self.strip_debug)
- if strip:
- strips.append(strip)
+ if self.material_tex:
+ mesh.generate_material_uv()
+ if mesh.faceUV:
+ set_progress_range(0.35, 0.65, "Splitting UVs")
+ mesh.split_uv(self.split_debug)
if self.debug:
- print "%d strips:"%len(strips)
- for i in range(len(strips)):
- print " %d: %d indices"%(i, len(strips[i]))
- print "%d loose faces"%len([f for f in mesh.faces if not f.flag])
- nind=sum([len(s) for s in strips])+sum([len(f.verts) for f in mesh.faces if not f.flag])
- print "%d indices total"%nind
-
- if self.use_degen_tris:
- big_strip=[]
- for s in strips:
- if big_strip:
- big_strip+=[big_strip[-1], s[0]]
- big_strip+=s
+ print "After UV splitting %d vertices and %d edges"%(len(mesh.verts), len(mesh.edges))
- for f in mesh.faces:
- if not f.flag:
- if len(big_strip)%2:
- order=(-1, -2, 0, 1)
- else:
- order=(0, 1, -1, -2)
- if big_strip:
- big_strip+=[big_strip[-1], f.verts[order[0]]]
- big_strip+=[f.verts[i] for i in order[:len(f.verts)]]
- f.flag=True
-
- strips=[big_strip]
-
- if self.debug:
- nind=len(big_strip)
- print "Big strip has %d indices"%len(big_strip)
-
- if self.debug:
- print "%.2f indices per triangle"%(float(nind)/ntris)
- print "Locality before optimization: "+" ".join(["%.3f"%self.get_locality(s) for s in strips])
-
- if self.optimize_locality and self.use_strips:
- followers={}
- for s in strips:
- followers.update(self.get_followers(s))
-
- verts2=[]
- vert=strips[0][0]
- while 1:
- vert.flag=True
- verts2.append(vert)
-
- next=None
- if vert.index in followers:
- flw=followers[vert.index]
- best=0
- for n in flw:
- if flw[n]>best and not mesh.verts[n].flag:
- next=mesh.verts[n]
- best=flw[n]+0.9/abs(vert.index-n)
-
- if not next:
- for v in mesh.verts:
- if not v.flag:
- next=v
- break
- if not next:
- break
-
- vert=next
+ mesh.compute_uv()
+ if self.tbn_vecs:
+ mesh.compute_tbn()
- mesh.verts=verts2
+ set_progress_range(0.65, 0.95, "Creating strips")
+ strips = []
+ loose = mesh.faces
+ if self.use_strips:
+ strips, loose = self.stripify(mesh)
- for i in range(len(mesh.verts)):
- mesh.verts[i].index=i
+ Blender.Window.DrawProgressBar(0.95, "Writing file");
- if self.debug:
- print "Locality after optimization: "+" ".join(["%.3f"%self.get_locality(s) for s in strips])
+ if self.object:
+ self.out_file.begin("mesh")
- self.out_file.write("vertices NORMAL3")
+ fmt = "NORMAL3"
if mesh.faceUV:
- self.out_file.write("_TEXCOORD2")
- self.out_file.write("_VERTEX3\n{\n")
- norm=None
- uv=None
+ fmt += "_TEXCOORD2"
+ if self.tbn_vecs:
+ fmt += "_ATTRIB33_ATTRIB34"
+ fmt += "_VERTEX3"
+ self.out_file.begin("vertices", fmt)
+ norm = None
+ uv = None
+ tan = None
+ bino = None
for v in mesh.verts:
if v.no!=norm:
- self.out_file.write("\tnormal3 %f %f %f;\n"%tuple(v.no))
- norm=v.no
+ self.out_file.write("normal3", *v.no)
+ norm = v.no
if v.uv!=uv:
- self.out_file.write("\ttexcoord2 %f %f;\n"%tuple(v.uv))
- uv=v.uv
- self.out_file.write("\tvertex3 %f %f %f;\n"%tuple(v.co))
- self.out_file.write("};\n")
+ self.out_file.write("texcoord2", *v.uv)
+ uv = v.uv
+ if v.tan!=tan:
+ self.out_file.write("attrib3", 3, *v.tan)
+ tan = v.tan
+ if v.bino!=bino:
+ self.out_file.write("attrib3", 4, *v.bino)
+ bino = v.bino
+ self.out_file.write("vertex3", *v.co)
+ self.out_file.end()
for s in strips:
- self.out_file.write("batch TRIANGLE_STRIP\n{\n\tindices")
- n=0
+ self.out_file.begin("batch", "TRIANGLE_STRIP")
+ indices = []
+ n = 0
for v in s:
- self.out_file.write(" %u"%v.index)
- n+=1;
- if n%32==0:
- self.out_file.write(";\n\tindices")
- self.out_file.write(";\n};\n")
-
- first=True
- for f in mesh.faces:
- if not f.flag:
- if first:
- self.out_file.write("batch TRIANGLES\n{\n")
- first=False
+ indices.append(v.index)
+ if len(indices)>=32:
+ self.out_file.write("indices", *indices)
+ indices = []
+ if indices:
+ self.out_file.write("indices", *indices)
+ self.out_file.end()
+
+ if loose:
+ self.out_file.begin("batch", "TRIANGLES")
+ for f in loose:
for i in range(2, len(f.verts)):
- self.out_file.write("\tindices %u %u %u;\n"%(f.verts[0].index, f.verts[i-1].index, f.verts[i].index))
- if not first:
- self.out_file.write("};\n")
+ self.out_file.write("indices", f.verts[0].index, f.verts[i-1].index, f.verts[i].index)
+ self.out_file.end()
+
+ if self.export_lines and mesh.lines:
+ self.out_file.write("batch", "LINES")
+ for l in mesh.lines:
+ self.out_file.write("indices", l.verts[0].index, l.verts[1].index)
+ self.out_file.end()
+
+ if self.object:
+ self.out_file.end()
+ self.out_file.begin("technique")
+ self.out_file.begin("pass", '""')
+ if self.material_tex:
+ self.out_file.begin("material")
+ self.out_file.write("diffuse", 1.0, 1.0, 1.0, 1.0)
+ self.out_file.end()
+ self.out_file.begin("texunit", 0)
+ self.out_file.begin("texture2d")
+ self.out_file.write("min_filter", "NEAREST")
+ self.out_file.write("mag_filter", "NEAREST")
+ self.out_file.write("storage", "RGB", len(mesh.materials), 1)
+ texdata = '"'
+ for m in mesh.materials:
+ texdata += "\\x%02X\\x%02X\\x%02X"%(int(m.R*255), int(m.G*255), int(m.B*255))
+ texdata += '"'
+ self.out_file.write("raw_data", texdata)
+ self.out_file.end()
+ self.out_file.end()
+ elif mesh.materials:
+ m = mesh.materials[0]
+ self.out_file.begin("material")
+ self.out_file.write("diffuse", m.R, m.G, m.B, 1.0)
+ self.out_file.write("ambient", m.R*m.amb, m.G*m.amb, m.B*m.amb, 1.0)
+ self.out_file.write("specular", m.specR*m.spec, m.specG*m.spec, m.specB*m.spec, 1.0)
+ self.out_file.write("shininess", m.hard);
+ self.out_file.end()
+ self.out_file.end()
+ self.out_file.end()
+
+ Blender.Window.DrawProgressBar(1.0, "Done")
class FrontEnd:
+ def __init__(self):
+ self.config = Blender.Registry.GetKey('mspgl_export', True) or {}
+ self.temp_config = Blender.Registry.GetKey('mspgl_export_temp') or {}
+
def run(self):
- self.use_strips=Blender.Draw.Create(True)
- self.use_degen_tris=Blender.Draw.Create(True)
- self.optimize_locality=Blender.Draw.Create(True)
- self.debug=Blender.Draw.Create(False)
- self.strip_debug=Blender.Draw.Create(False)
- self.smooth_debug=Blender.Draw.Create(False)
- ret=Blender.Draw.PupBlock("Export MSP GL mesh",
+ self.use_strips = Blender.Draw.Create(self.config.get('use_strips', True))
+ self.use_degen_tris = Blender.Draw.Create(self.config.get('use_degen_tris', True))
+ self.max_strip_len = Blender.Draw.Create(self.config.get('max_strip_len', 1024))
+ self.optimize_cache = Blender.Draw.Create(self.config.get('optimize_cache', False))
+ self.cache_size = Blender.Draw.Create(self.config.get('cache_size', 64))
+ self.export_lines = Blender.Draw.Create(self.config.get('export_lines', False))
+ self.tbn_vecs = Blender.Draw.Create(self.config.get('tbn_vecs', False))
+ self.compound = Blender.Draw.Create(self.config.get('compound', False))
+ self.object = Blender.Draw.Create(self.config.get('object', False))
+ self.material_tex = Blender.Draw.Create(self.config.get('material_tex', False))
+ self.debug = Blender.Draw.Create(self.config.get('debug', False))
+ self.strip_debug = Blender.Draw.Create(self.config.get('strip_debug', False))
+ self.split_debug = Blender.Draw.Create(self.config.get('split_debug', False))
+ ret = Blender.Draw.PupBlock("Export MSP GL mesh",
[("Use strips", self.use_strips, "Generage OpenGL triangle strips"),
("Use degen tris", self.use_degen_tris, "Use degenerate triangles to combine triangle strips"),
- ("Optimize locality", self.optimize_locality),
+ ("Max strip len", self.max_strip_len, 4, 16384, "Maximum length of a triangle strip"),
+ ("Optimize cache", self.optimize_cache, "Optimize for vertex cache"),
+ ("Cache size", self.cache_size, 8, 1024, "Cache size to optimize for"),
+ ("Export lines", self.export_lines, "Export lone edges as lines"),
+ ("Compute T/B vecs", self.tbn_vecs, "Compute tangent/binormal vectors for bumpmapping"),
+ ("Compound", self.compound, "Create a compound mesh of all selected objects"),
+ ("Object", self.object, "Export as an object"),
+ ("Material texture", self.material_tex, "Create a texture from material data"),
("Debugging options"),
("Debug", self.debug),
("Debug strips", self.strip_debug),
- ("Debug smoothing", self.smooth_debug)])
+ ("Debug splitting", self.split_debug)])
if ret:
- Blender.Window.FileSelector(self.export, "Export MSP GL mesh", Blender.sys.makename(ext='.mesh'))
+ dirname = self.temp_config.get("dirname", Blender.sys.dirname(Blender.Get("filename")))
+ obj = Blender.Object.GetSelected()[0]
+ ext = "mesh"
+ if self.object.val:
+ ext = "object"
+ Blender.Window.FileSelector(self.export, "Export MSP GL mesh", "%s/%s.%s"%(dirname, obj.name, ext))
def draw(self):
pass
def export(self, fn):
- exp=Exporter(fn)
- exp.use_strips=self.use_strips.val
- exp.use_degen_tris=self.use_degen_tris.val
- exp.optimize_locality=self.optimize_locality.val
- exp.debug=self.debug.val
- exp.strip_debug=self.strip_debug.val
- exp.smooth_debug=self.smooth_debug.val
+ self.config['use_strips'] = self.use_strips.val
+ self.config['use_degen_tris'] = self.use_degen_tris.val
+ self.config['max_strip_len'] = self.max_strip_len.val
+ self.config['optimize_cache'] = self.optimize_cache.val
+ self.config['cache_size'] = self.cache_size.val
+ self.config['export_lines'] = self.export_lines.val
+ self.config['tbn_vecs'] = self.tbn_vecs.val
+ self.config['compound'] = self.compound.val
+ self.config['object'] = self.object.val
+ self.config['material_tex'] = self.material_tex.val
+ self.config['debug'] = self.debug.val
+ self.config['strip_debug'] = self.strip_debug.val
+ self.config['split_debug'] = self.split_debug.val
+ Blender.Registry.SetKey('mspgl_export', self.config, True)
+
+ import os
+ self.temp_config["dirname"] = os.path.dirname(fn)
+ Blender.Registry.SetKey('mspgl_export_temp', self.temp_config)
+
+ exp = Exporter(fn)
+ exp.use_strips = self.use_strips.val
+ exp.use_degen_tris = self.use_degen_tris.val
+ exp.max_strip_len = self.max_strip_len.val
+ exp.optimize_cache = self.optimize_cache.val
+ exp.cache_size = self.cache_size.val
+ exp.export_lines = self.export_lines.val
+ exp.tbn_vecs = self.tbn_vecs.val
+ exp.compound = self.compound.val
+ exp.object = self.object.val
+ exp.material_tex = self.material_tex.val
+ exp.debug = self.debug.val
+ exp.strip_debug = self.strip_debug.val
+ exp.split_debug = self.split_debug.val
exp.export()
if __name__=="__main__":
- fe=FrontEnd()
+ fe = FrontEnd()
fe.run()
projects / libs / gl.git / blobdiff