forked from bartvdbraak/blender
b970eadedf
- updating some bundled scripts, thanks to authors Jean-Michel Soler, Campbell Barton and Anthony D'Agostino. BPython: - removing wrong fix from BGL.c's glDrawPixels. note: applied guitargeek's setName patch to Blender.Key, but saw that he updated it with more functionality and assigned to stivs, so I won't commit this old version.
490 lines
13 KiB
Python
490 lines
13 KiB
Python
#!BPY
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"""
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Name: 'Bridge Faces/Edge-Loops'
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Blender: 237
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Group: 'Mesh'
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Tooltip: 'Select 2 vert loops, then run this script.'
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"""
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__author__ = "Campbell Barton AKA Ideasman"
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__url__ = ["http://members.iinet.net.au/~cpbarton/ideasman/", "blender", "elysiun"]
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__version__ = "1.0 2004/04/25"
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__bpydoc__ = """\
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With this script vertex loops can be skinned: faces are created to connect the
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selected loops of vertices.
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Usage:
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In mesh Edit mode select the vertices of the loops (closed paths / curves of
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vertices: circles, for example) that should be skinned, then run this script.
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A pop-up will provide further options, if the results of a method are not adequate try one of the others.
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"""
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# $Id$
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#
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# --------------------------------------------------------------------------
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# Skin Selected edges 1.0 By Campbell Barton (AKA Ideasman)
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# --------------------------------------------------------------------------
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# ***** BEGIN GPL LICENSE BLOCK *****
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# ***** END GPL LICENCE BLOCK *****
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# --------------------------------------------------------------------------
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# Made by Ideasman/Campbell 2005/06/15 - ideasman@linuxmail.org
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import Blender
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from Blender import *
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BIG_NUM = 1<<30
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global CULL_METHOD
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CULL_METHOD = 0
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class edge:
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def __init__(self, v1,v2):
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self.v1 = v1
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self.v2 = v2
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# uv1 uv2 vcol1 vcol2 # Add later
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self.length = (v1.co - v2.co).length
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self.removed = 0 # Have we been culled from the eloop
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self.match = None # The other edge were making a face with
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class edgeLoop:
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def __init__(self, loop): # Vert loop
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# Use next and prev, nextDist, prevDist
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# Get Loops centre.
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self.centre = Mathutils.Vector()
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f = 1.0/len(loop)
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for v in loop:
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self.centre += v.co * f
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# Convert Vert loop to Edges.
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self.edges = []
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vIdx = 0
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while vIdx < len(loop):
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self.edges.append( edge(loop[vIdx-1], loop[vIdx]) )
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vIdx += 1
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# Assign linked list
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for eIdx in range(len(self.edges)-1):
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self.edges[eIdx].next = self.edges[eIdx+1]
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self.edges[eIdx].prev = self.edges[eIdx-1]
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# Now last
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self.edges[-1].next = self.edges[0]
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self.edges[-1].prev = self.edges[-2]
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# GENERATE AN AVERAGE NORMAL FOR THE WHOLE LOOP.
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self.normal = Mathutils.Vector()
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for e in self.edges:
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n = Mathutils.CrossVecs(self.centre-e.v1.co, self.centre-e.v2.co)
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# Do we realy need tot normalize?
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n.normalize()
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self.normal += n
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self.normal.normalize()
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# Generate a normal for each edge.
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for e in self.edges:
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n1 = e.v1.co
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n2 = e.v2.co
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n3 = e.prev.v1.co
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a = n1-n2
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b = n1-n3
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normal1 = Mathutils.CrossVecs(a,b)
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normal1.normalize()
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n1 = e.v2.co
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n3 = e.next.v2.co
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n2 = e.v1.co
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a = n1-n2
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b = n1-n3
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normal2 = Mathutils.CrossVecs(a,b)
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normal2.normalize()
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# Reuse normal1 var
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normal1 += normal1 + normal2
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normal1.normalize()
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e.normal = normal1
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#print e.normal
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def backup(self):
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# Keep a backup of the edges
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self.backupEdges = self.edges[:]
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def restore(self):
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self.edges = self.backupEdges[:]
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for e in self.edges:
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e.removed = 0
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def reverse(self):
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self.edges.reverse()
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for e in self.edges:
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e.normal = -e.normal
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e.v1, e.v2 = e.v2, e.v1
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self.normal = -self.normal
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# Removes N Smallest edges and backs up
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def removeSmallest(self, cullNum, otherLoopLen):
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global CULL_METHOD
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if CULL_METHOD == 0: # Shortest edge
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eloopCopy = self.edges[:]
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eloopCopy.sort(lambda e1, e2: cmp(e1.length, e2.length )) # Length sort, smallest first
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eloopCopy = eloopCopy[:cullNum]
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for e in eloopCopy:
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e.removed = 1
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self.edges.remove( e ) # Remove from own list, still in linked list.
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else: # CULL METHOD is even
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culled = 0
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step = int(otherLoopLen / float(cullNum))
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currentEdge = self.edges[0]
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while culled < cullNum:
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# Get the shortest face in the next STEP
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while currentEdge.removed == 1:
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# Bug here!
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currentEdge = currentEdge.next
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smallestEdge = currentEdge
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for i in range(step):
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currentEdge = currentEdge.next
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while currentEdge.removed == 1:
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currentEdge = currentEdge.next
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if smallestEdge.length > currentEdge.length:
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smallestEdge = currentEdge
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# In that stepping length we have the smallest edge.remove it
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smallestEdge.removed = 1
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self.edges.remove(smallestEdge)
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culled+=1
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# Returns face edges.
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# face must have edge data.
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def faceEdges(me, f):
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if len(f) == 3:
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return [\
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me.findEdge(f[0], f[1]),\
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me.findEdge(f[1], f[2]),\
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me.findEdge(f[2], f[0])\
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]
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elif len(f) == 4:
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return [\
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me.findEdge(f[0], f[1]),\
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me.findEdge(f[1], f[2]),\
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me.findEdge(f[2], f[3]),\
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me.findEdge(f[3], f[0])\
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]
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def getSelectedEdges(me, ob):
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SEL_FLAG = NMesh.EdgeFlags['SELECT']
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FGON_FLAG = NMesh.EdgeFlags['FGON']
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edges = [e for e in me.edges if e.flag & SEL_FLAG if (e.flag & FGON_FLAG) == 0 ]
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# Now remove edges that face 2 or more selected faces usoing them
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edgeFromSelFaces = []
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for f in me.faces:
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if len(f) >2 and f.sel:
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edgeFromSelFaces.extend(faceEdges(me, f))
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# Remove all edges with 2 or more selected faces as uses.
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for e in edgeFromSelFaces:
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if edgeFromSelFaces.count(e) > 1:
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me.removeEdge(e.v1, e.v2)
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# Remove selected faces?
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fIdx = len(me.faces)
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while fIdx:
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fIdx-=1
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if len(me.faces[fIdx]) > 2:
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if me.faces[fIdx].sel:
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me.faces.pop(fIdx)
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return [e for e in edges if edgeFromSelFaces.count(e) < 2]
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# Like vert loops
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def getVertLoops(selEdges):
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mainVertLoops = []
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while selEdges:
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e = selEdges.pop()
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contextVertLoop= [e.v1, e.v2] # start the vert loop
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eIdx = 1 # Get us into the loop. dummy var.
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# if eIdx == 0 then it means we searched and found no matches...
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# time for a new vert loop,
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while eIdx:
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eIdx = len(selEdges)
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while eIdx:
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eIdx-=1
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# Check for edge attached at the head of the loop.
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if contextVertLoop[0] == selEdges[eIdx].v1:
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contextVertLoop.insert(0, selEdges.pop(eIdx).v2)
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elif contextVertLoop[0] == selEdges[eIdx].v2:
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contextVertLoop.insert(0, selEdges.pop(eIdx).v1)
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# Chech for edge vert at the tail.
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elif contextVertLoop[-1] == selEdges[eIdx].v1:
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contextVertLoop.append(selEdges.pop(eIdx).v2)
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elif contextVertLoop[-1] == selEdges[eIdx].v2:
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contextVertLoop.append(selEdges.pop(eIdx).v1)
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else:
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# None found? Keep looking
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continue
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# Once found we.
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break
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# Is this a loop? if so then its forst and last vert must be teh same.
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if contextVertLoop[0].index == contextVertLoop[-1].index:
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contextVertLoop.pop() # remove double vert
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mainVertLoops.append(contextVertLoop)
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# Build context vert loops
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return mainVertLoops
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def skin2EdgeLoops(eloop1, eloop2, me, ob, MODE):
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# Make sure e1 loops is bigger then e2
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if len(eloop1.edges) != len(eloop2.edges):
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if len(eloop1.edges) < len(eloop2.edges):
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eloop1, eloop2 = eloop2, eloop1
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eloop1.backup() # were about to cull faces
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CULL_FACES = len(eloop1.edges) - len(eloop2.edges)
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eloop1.removeSmallest(CULL_FACES, len(eloop1.edges))
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else:
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CULL_FACES = 0
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# First make sure poly vert loops are in sync with eachother.
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# The vector allong which we are skinning.
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skinVector = eloop1.centre - eloop2.centre
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loopDist = skinVector.length
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# IS THE LOOP FLIPPED, IF SO FLIP BACK.
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angleBetweenLoopNormals = Mathutils.AngleBetweenVecs(eloop1.normal, eloop2.normal)
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if angleBetweenLoopNormals > 90:
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eloop2.reverse()
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bestEloopDist = BIG_NUM
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bestOffset = 0
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# Loop rotation offset to test.1
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eLoopIdxs = range(len(eloop1.edges))
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for offset in range(len(eloop1.edges)):
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totEloopDist = 0 # Measure this total distance for thsi loop.
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offsetIndexLs = eLoopIdxs[offset:] + eLoopIdxs[:offset] # Make offset index list
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# e1Idx is always from 0 to N, e2Idx is offset.
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for e1Idx, e2Idx in enumerate(offsetIndexLs):
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# Measure the vloop distance ===============
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totEloopDist += ((eloop1.edges[e1Idx].v1.co - eloop2.edges[e2Idx].v1.co).length / loopDist) #/ nangle1
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totEloopDist += ((eloop1.edges[e1Idx].v2.co - eloop2.edges[e2Idx].v2.co).length / loopDist) #/ nangle1
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# Premeture break if where no better off
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if totEloopDist > bestEloopDist:
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break
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if totEloopDist < bestEloopDist:
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bestOffset = offset
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bestEloopDist = totEloopDist
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# Modify V2 LS for Best offset
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eloop2.edges = eloop2.edges[bestOffset:] + eloop2.edges[:bestOffset]
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for loopIdx in range(len(eloop2.edges)):
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e1 = eloop1.edges[loopIdx]
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e2 = eloop2.edges[loopIdx]
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# Remember the pairs for fan filling culled edges.
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e1.match = e2; e2.match = e1
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# need some smart face flipping code here.
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f = NMesh.Face([e1.v1, e1.v2, e2.v2, e2.v1])
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f.sel = 1
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me.faces.append(f)
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# FAN FILL MISSING FACES.
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if CULL_FACES:
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# Culled edges will be in eloop1.
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FAN_FILLED_FACES = 0
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contextEdge = eloop1.edges[0] # The larger of teh 2
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while FAN_FILLED_FACES < CULL_FACES:
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while contextEdge.next.removed == 0:
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contextEdge = contextEdge.next
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vertFanPivot = contextEdge.match.v2
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while contextEdge.next.removed == 1:
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f = NMesh.Face([contextEdge.next.v1, contextEdge.next.v2, vertFanPivot] )
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f.sel = 1
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me.faces.append(f)
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# Should we use another var?, this will work for now.
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contextEdge.next.removed = 1
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contextEdge = contextEdge.next
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FAN_FILLED_FACES += 1
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eloop1.restore() # Add culled back into the list.
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#if angleBetweenLoopNormals > 90:
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# eloop2.reverse()
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def main():
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global CULL_METHOD
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is_editmode = Window.EditMode()
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if is_editmode: Window.EditMode(0)
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ob = Scene.GetCurrent().getActiveObject()
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if ob == None or ob.getType() != 'Mesh':
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return
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me = ob.getData()
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if not me.edges:
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Draw.PupMenu('Error, add edge data first')
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if is_editmode: Window.EditMode(1)
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return
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# BAD BLENDER PYTHON API, NEED TO ENTER EXIT EDIT MODE FOR ADDING EDGE DATA.
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# ADD EDGE DATA HERE, Python API CANT DO IT YET, LOOSES SELECTION
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selEdges = getSelectedEdges(me, ob)
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vertLoops = getVertLoops(selEdges) # list of lists of edges.
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if len(vertLoops) > 2:
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choice = Draw.PupMenu('Loft '+str(len(vertLoops))+' edge loops%t|loop|segment')
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if choice == -1:
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if is_editmode: Window.EditMode(1)
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return
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elif len(vertLoops) < 2:
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Draw.PupMenu('Error, No Vertloops found%t|if you have a valid selection, go in and out of face edit mode to update the selection state.')
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if is_editmode: Window.EditMode(1)
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return
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else:
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choice = 2
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# The line below checks if any of the vert loops are differenyt in length.
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if False in [len(v) == len(vertLoops[0]) for v in vertLoops]:
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CULL_METHOD = Draw.PupMenu('Small to large edge loop distrobution method%t|remove edges evenly|remove smallest edges edges')
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if CULL_METHOD == -1:
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if is_editmode: Window.EditMode(1)
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return
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if CULL_METHOD ==1: # RESET CULL_METHOD
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CULL_METHOD = 0 # shortest
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else:
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CULL_METHOD = 1 # even
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time1 = sys.time()
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# Convert to special edge data.
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edgeLoops = []
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for vloop in vertLoops:
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edgeLoops.append(edgeLoop(vloop))
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# VERT LOOP ORDERING CODE
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# Build a worm list - grow from Both ends
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edgeOrderedList = [edgeLoops.pop()]
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# Find the closest.
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bestSoFar = BIG_NUM
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bestIdxSoFar = None
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for edLoopIdx, edLoop in enumerate(edgeLoops):
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l =(edgeOrderedList[-1].centre - edLoop.centre).length
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if l < bestSoFar:
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bestIdxSoFar = edLoopIdx
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bestSoFar = l
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edgeOrderedList.append( edgeLoops.pop(bestIdxSoFar) )
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# Now we have the 2 closest, append to either end-
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# Find the closest.
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while edgeLoops:
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bestSoFar = BIG_NUM
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bestIdxSoFar = None
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first_or_last = 0 # Zero is first
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for edLoopIdx, edLoop in enumerate(edgeLoops):
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l1 =(edgeOrderedList[-1].centre - edLoop.centre).length
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if l1 < bestSoFar:
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bestIdxSoFar = edLoopIdx
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bestSoFar = l1
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first_or_last = 1 # last
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l2 =(edgeOrderedList[0].centre - edLoop.centre).length
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if l2 < bestSoFar:
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bestIdxSoFar = edLoopIdx
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bestSoFar = l2
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first_or_last = 0 # last
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if first_or_last: # add closest Last
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edgeOrderedList.append( edgeLoops.pop(bestIdxSoFar) )
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else: # Add closest First
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edgeOrderedList.insert(0, edgeLoops.pop(bestIdxSoFar) ) # First
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for i in range(len(edgeOrderedList)-1):
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skin2EdgeLoops(edgeOrderedList[i], edgeOrderedList[i+1], me, ob, 0)
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if choice == 1 and len(edgeOrderedList) > 2: # Loop
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skin2EdgeLoops(edgeOrderedList[0], edgeOrderedList[-1], me, ob, 0)
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me.update(1, 1, 0)
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if is_editmode: Window.EditMode(1)
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main()
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