Blender-ZeroEngine-MSH2-Plugin/src_research_readme/blender_2.43_scripts/mesh_unfolder.py

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#!BPY
"""
Name: 'Unfold'
Blender: 245
Group: 'Mesh'
Tip: 'Unfold meshes to create nets'
Version: v2.5
Author: Matthew Chadwick
"""
import Blender
from Blender import *
from Blender.Mathutils import *
try:
import sys
import traceback
import math
import re
from math import *
import sys
import random
import xml.sax, xml.sax.handler, xml.sax.saxutils
# annoying but need so classes dont raise errors
xml_sax_handler_ContentHandler = xml.sax.handler.ContentHandler
except:
Draw.PupMenu('Error%t|A full python installation is required to run this script.')
xml = None
xml_sax_handler_ContentHandler = type(0)
__author__ = 'Matthew Chadwick'
__version__ = '2.5 06102007'
__url__ = ["http://celeriac.net/unfolder/", "blender", "blenderartist"]
__email__ = ["post at cele[remove this text]riac.net", "scripts"]
__bpydoc__ = """\
Mesh Unfolder
Unfolds the selected mesh onto a plane to form a net
Not all meshes can be unfolded
Meshes must be free of holes,
isolated edges (not part of a face), twisted quads and other rubbish.
Nice clean triangulated meshes unfold best
This program is free software; you can distribute it and/or modify it under the terms
of the GNU General Public License as published by the Free Software Foundation; version 2
or later, currently at http://www.gnu.org/copyleft/gpl.html
The idea came while I was riding a bike.
"""
# ***** BEGIN GPL LICENSE BLOCK *****
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# ***** END GPL LICENCE BLOCK *****
# Face lookup
class FacesAndEdges:
def __init__(self, mesh):
self.nfaces = 0
# straight from the documentation
self.edgeFaces = dict([(edge.key, []) for edge in mesh.edges])
for face in mesh.faces:
face.sel = False
for key in face.edge_keys:
self.edgeFaces[key].append(face)
def findTakenAdjacentFace(self, bface, edge):
return self.findAdjacentFace(bface, edge)
# find the first untaken (non-selected) adjacent face in the list of adjacent faces for the given edge (allows for manifold meshes too)
def findAdjacentFace(self, bface, edge):
faces = self.edgeFaces[edge.key()]
for i in xrange(len(faces)):
if faces[i] == bface:
j = (i+1) % len(faces)
while(faces[j]!=bface):
if faces[j].sel == False:
return faces[j]
j = (j+1) % len(faces)
return None
def returnFace(self, face):
face.sel = False
self.nfaces-=1
def facesTaken(self):
return self.nfaces
def takeAdjacentFace(self, bface, edge):
if (edge==None):
return None
face = self.findAdjacentFace(bface, edge)
if(face!=None):
face.sel = True
self.nfaces+=1
return face
def takeFace(self, bface):
if(bface!=None):
bface.sel= True
self.nfaces+=1
# A fold between two faces with a common edge
class Fold:
ids = -1
def __init__(self, parent, refPoly, poly, edge, angle=None):
Fold.ids+=1
self.id = Fold.ids
self.refPoly = refPoly
self.poly = poly
self.srcFace = None
self.desFace = None
self.edge = edge
self.foldedEdge = edge
self.rm = None
self.parent = parent
self.tree = None
if(refPoly!=None):
self.refPolyNormal = refPoly.normal()
self.polyNormal = poly.normal()
if(angle==None):
self.angle = self.calculateAngle()
self.foldingPoly = poly.rotated(edge, self.angle)
else:
self.angle = angle
self.foldingPoly = poly
self.unfoldedEdge = self.edge
self.unfoldedNormal = None
self.animAngle = self.angle
self.cr = None
self.nancestors = None
def reset(self):
self.foldingPoly = self.poly.rotated(self.edge, self.dihedralAngle())
def getID(self):
return self.id
def getParent(self):
return self.parent
def ancestors(self):
if(self.nancestors==None):
self.nancestors = self.computeAncestors()
return self.nancestors
def computeAncestors(self):
if(self.parent==None):
return 0
else:
return self.parent.ancestors()+1
def dihedralAngle(self):
return self.angle
def unfoldTo(self, f):
self.animAngle = self.angle*f
self.foldingPoly = self.poly.rotated(self.edge, self.animAngle)
def calculateAngle(self):
sangle = Mathutils.AngleBetweenVecs(self.refPolyNormal, self.polyNormal)
if(sangle!=sangle):
sangle=0.0
ncp = self.refPolyNormal.cross(self.polyNormal)
dp = ncp.dot(self.edge.vector)
if(dp>0.0):
return +sangle
else:
return -sangle
def alignWithParent(self):
pass
def unfoldedNormal(self):
return self.unfoldedNormal
def getEdge(self):
return self.edge
def getFace(self):
return self.poly
def testFace(self):
return Poly.fromVectors([self.edge.v1, self.edge.v2, Vector([0,0,0])])
def unfoldedFace(self):
return self.foldingPoly
def unfold(self):
if(self.parent!=None):
self.parent.foldFace(self)
def foldFace(self, child):
child.foldingPoly.rotate(self.edge, self.animAngle)
if(self.parent!=None):
self.parent.foldFace(child)
class Cut(Fold):
pass
# Trees build folds by traversing the mesh according to a local measure
class Tree:
def __init__(self, net, parent,fold,otherConstructor=None):
self.net = net
self.fold = fold
self.face = fold.srcFace
self.poly = Poly.fromBlenderFace(self.face)
self.generations = net.generations
self.growing = True
self.tooLong = False
self.parent = parent
self.grown = False
if not(otherConstructor):
self.edges = net.edgeIteratorClass(self)
def goodness(self):
return self.edges.goodness()
def compare(self, other):
if(self.goodness() > other.goodness()):
return +1
else:
return -1
def isGrowing(self):
return self.growing
def beGrowing(self):
self.growing = True
def grow(self):
self.tooLong = self.fold.ancestors()>self.generations
if(self.edges.hasNext() and self.growing):
edge = self.edges.next()
tface = self.net.facesAndEdges.takeAdjacentFace(self.face, edge)
if(tface!=None):
self.branch(tface, edge)
if(self.parent==None):
self.grow()
else:
self.grown = True
def isGrown(self):
return self.grown
def canGrow(self):
return (self.parent!=None and self.parent.grown)
def getNet(self):
return self.net
def getFold(self):
return self.fold
def getFace(self):
return self.face
def branch(self, tface, edge):
fold = Fold(self.fold, self.poly, Poly.fromBlenderFace(tface), edge)
fold.srcFace = tface
self.net.myFacesVisited+=1
tree = Tree(self.net, self, fold)
fold.tree = tree
fold.unfold()
overlaps = self.net.checkOverlaps(fold)
nc = len(overlaps)
self.net.overlaps+=nc
if(nc>0 and self.net.avoidsOverlaps):
self.handleOverlap(fold, overlaps)
else:
self.addFace(fold)
def handleOverlap(self, fold, overlaps):
self.net.facesAndEdges.returnFace(fold.srcFace)
self.net.myFacesVisited-=1
for cfold in overlaps:
ttree = cfold.tree
ttree.growing = True
ttree.grow()
def addFace(self, fold):
ff = fold.unfoldedFace()
fold.desFace = self.net.addFace(ff, fold.srcFace)
self.net.folds.append(fold)
self.net.addBranch(fold.tree)
fold.tree.growing = not(self.tooLong)
if(self.net.diffuse==False):
fold.tree.grow()
# A Net is the result of the traversal of the mesh by Trees
class Net:
def __init__(self, src, des):
self.src = src
self.des = des
self.firstFace = None
self.firstPoly = None
self.refFold = None
self.edgeIteratorClass = RandomEdgeIterator
if(src!=None):
self.srcFaces = src.faces
self.facesAndEdges = FacesAndEdges(self.src)
self.myFacesVisited = 0
self.facesAdded = 0
self.folds = []
self.cuts = []
self.branches = []
self.overlaps = 0
self.avoidsOverlaps = True
self.frame = 1
self.ff = 180.0
self.firstFaceIndex = None
self.trees = 0
self.foldIPO = None
self.perFoldIPO = None
self.IPOCurves = {}
self.generations = 128
self.diffuse = True
self.noise = 0.0
self.grownBranches = 0
self.assignsUV = True
self.animates = False
self.showProgress = False
self.feedback = None
def setSelectedFaces(self, faces):
self.srcFaces = faces
self.facesAndEdges = FacesAndEdges(self.srcFaces)
def setShowProgress(self, show):
self.showProgress = show
# this method really needs work
def unfold(self):
selectedFaces = [face for face in self.src.faces if (self.src.faceUV and face.sel)]
if(self.avoidsOverlaps):
print "unfolding with overlap detection"
if(self.firstFaceIndex==None):
self.firstFaceIndex = random.randint(0, len(self.src.faces)-1)
else:
print "Using user-selected seed face ", self.firstFaceIndex
self.firstFace = self.src.faces[self.firstFaceIndex]
z = min([v.co.z for v in self.src.verts])-0.1
ff = Poly.fromBlenderFace(self.firstFace)
if(len(ff.v)<3):
raise Exception("This mesh contains an isolated edge - it must consist only of faces")
testFace = Poly.fromVectors( [ Vector([0.0,0.0,0.0]), Vector([0.0,1.0,0.0]), Vector([1.0,1.0,0.0]) ] )
# hmmm. I honestly can't remember why this needs to be done, but it does.
u=0
v=1
w=2
if ff.v[u].x==ff.v[u+1].x and ff.v[u].y==ff.v[u+1].y:
u=1
v=2
w=0
# here we make a couple of folds, not part of the net, which serve to get the net into the xy plane
xyFace = Poly.fromList( [ [ff.v[u].x,ff.v[u].y, z] , [ff.v[v].x,ff.v[v].y, z] , [ff.v[w].x+0.1,ff.v[w].y+0.1, z] ] )
refFace = Poly.fromVectors([ ff.v[u], ff.v[v], xyFace.v[1], xyFace.v[0] ] )
xyFold = Fold(None, xyFace, refFace, Edge(xyFace.v[0], xyFace.v[1] ))
self.refFold = Fold(xyFold, refFace, ff, Edge(refFace.v[0], refFace.v[1] ))
self.refFold.srcFace = self.firstFace
# prepare to grow the trees
trunk = Tree(self, None, self.refFold)
trunk.generations = self.generations
self.firstPoly = ff
self.facesAndEdges.takeFace(self.firstFace)
self.myFacesVisited+=1
self.refFold.unfold()
self.refFold.tree = trunk
self.refFold.desFace = self.addFace(self.refFold.unfoldedFace(), self.refFold.srcFace)
self.folds.append(self.refFold)
trunk.grow()
i = 0
# keep the trees growing while they can
while(self.myFacesVisited<len(self.src.faces) and len(self.branches) > 0):
if self.edgeIteratorClass==RandomEdgeIterator:
i = random.randint(0,len(self.branches)-1)
tree = self.branches[i]
if(tree.isGrown()):
self.branches.pop(i)
else:
tree.beGrowing()
if(tree.canGrow()):
tree.grow()
i = 0
else:
i = (i + 1) % len(self.branches)
if self.src.faceUV:
for face in self.src.faces:
face.sel = False
for face in selectedFaces:
face.sel = True
self.src.update()
Window.RedrawAll()
def assignUVs(self):
for fold in self.folds:
self.assignUV(fold.srcFace, fold.unfoldedFace())
print " assigned uv to ", len(self.folds), len(self.src.faces)
self.src.update()
def checkOverlaps(self, fold):
#return self.getOverlapsBetween(fold, self.folds)
return self.getOverlapsBetweenGL(fold, self.folds)
def getOverlapsBetween(self, fold, folds):
if(fold.parent==None):
return []
mf = fold.unfoldedFace()
c = []
for afold in folds:
mdf = afold.unfoldedFace()
if(afold!=fold):
# currently need to get agreement from both polys because
# a touch by a vertex of one the other's edge is acceptable &
# they disagree on that
intersects = mf.intersects2D(mdf) and mdf.intersects2D(mf)
inside = ( mdf.containsAnyOf(mf) or mf.containsAnyOf(mdf) )
if( intersects or inside or mdf.overlays(mf)):
c.append(afold)
return c
def getOverlapsBetweenGL(self, fold, folds):
b = fold.unfoldedFace().bounds()
polys = len(folds)*4+16 # the buffer is nhits, mindepth, maxdepth, name
buffer = BGL.Buffer(BGL.GL_INT, polys)
BGL.glSelectBuffer(polys, buffer)
BGL.glRenderMode(BGL.GL_SELECT)
BGL.glInitNames()
BGL.glPushName(0)
BGL.glPushMatrix()
BGL.glMatrixMode(BGL.GL_PROJECTION)
BGL.glLoadIdentity()
BGL.glOrtho(b[0].x, b[1].x, b[1].y, b[0].y, 0.0, 10.0)
#clip = BGL.Buffer(BGL.GL_FLOAT, 4)
#clip.list = [0,0,0,0]
#BGL.glClipPlane(BGL.GL_CLIP_PLANE1, clip)
# could use clipping planes here too
BGL.glMatrixMode(BGL.GL_MODELVIEW)
BGL.glLoadIdentity()
bx = (b[1].x - b[0].x)
by = (b[1].y - b[0].y)
cx = bx / 2.0
cy = by / 2.0
for f in xrange(len(folds)):
afold = folds[f]
if(fold!=afold):
BGL.glLoadName(f)
BGL.glBegin(BGL.GL_LINE_LOOP)
for v in afold.unfoldedFace().v:
BGL.glVertex2f(v.x, v.y)
BGL.glEnd()
BGL.glPopMatrix()
BGL.glFlush()
hits = BGL.glRenderMode(BGL.GL_RENDER)
buffer = [buffer[i] for i in xrange(3, 4*hits, 4)]
o = [folds[buffer[i]] for i in xrange(len(buffer))]
return self.getOverlapsBetween(fold, o)
def colourFace(self, face, cr):
for c in face.col:
c.r = int(cr[0])
c.g = int(cr[1])
c.b = int(cr[2])
c.a = int(cr[3])
self.src.update()
def setAvoidsOverlaps(self, avoids):
self.avoidsOverlaps = avoids
def addBranch(self, branch):
self.branches.append(branch)
if self.edgeIteratorClass!=RandomEdgeIterator:
self.branches.sort(lambda b1, b2: b1.compare(b2))
def srcSize(self):
return len(self.src.faces)
def nBranches(self):
return len(self.branches)
def facesCreated(self):
return len(self.des.faces)
def facesVisited(self):
return self.myFacesVisited
def getOverlaps(self):
return self.overlaps
def sortOutIPOSource(self):
print "Sorting out IPO"
if self.foldIPO!=None:
return
o = None
try:
o = Blender.Object.Get("FoldRate")
except:
o = Blender.Object.New("Empty", "FoldRate")
Blender.Scene.GetCurrent().objects.link(o)
if(o.getIpo()==None):
ipo = Blender.Ipo.New("Object", "FoldRateIPO")
z = ipo.addCurve("RotZ")
print " added RotZ IPO curve"
z.addBezier((1,0))
# again, why is this 10x out ?
z.addBezier((180, self.ff/10.0))
z.addBezier((361, 0.0))
o.setIpo(ipo)
z.recalc()
z.setInterpolation("Bezier")
z.setExtrapolation("Cyclic")
self.setIPOSource(o)
print " added IPO source"
def setIPOSource(self, object):
try:
self.foldIPO = object
for i in xrange(self.foldIPO.getIpo().getNcurves()):
self.IPOCurves[self.foldIPO.getIpo().getCurves()[i].getName()] = i
print " added ", self.foldIPO.getIpo().getCurves()[i].getName()
except:
print "Problem setting IPO object"
print sys.exc_info()[1]
traceback.print_exc(file=sys.stdout)
def setFoldFactor(self, ff):
self.ff = ff
def sayTree(self):
for fold in self.folds:
if(fold.getParent()!=None):
print fold.getID(), fold.dihedralAngle(), fold.getParent().getID()
def report(self):
p = int(float(self.myFacesVisited)/float(len(self.src.faces)) * 100)
print str(p) + "% unfolded"
print "faces created:", self.facesCreated()
print "faces visited:", self.facesVisited()
print "originalfaces:", len(self.src.faces)
n=0
if(self.avoidsOverlaps):
print "net avoided at least ", self.getOverlaps(), " overlaps ",
n = len(self.src.faces) - self.facesCreated()
if(n>0):
print "but was unable to avoid ", n, " overlaps. Incomplete net."
else:
print "- A complete net."
else:
print "net has at least ", self.getOverlaps(), " collision(s)"
return n
# fold all my folds to a fraction of their total fold angle
def unfoldToCurrentFrame(self):
self.unfoldTo(Blender.Scene.GetCurrent().getRenderingContext().currentFrame())
def unfoldTo(self, frame):
frames = Blender.Scene.GetCurrent().getRenderingContext().endFrame()
if(self.foldIPO!=None and self.foldIPO.getIpo()!=None):
f = self.foldIPO.getIpo().EvaluateCurveOn(self.IPOCurves["RotZ"],frame)
# err, this number seems to be 10x less than it ought to be
fff = 1.0 - (f*10.0 / self.ff)
else:
fff = 1.0-((frame)/(frames*1.0))
for fold in self.folds:
fold.unfoldTo(fff)
for fold in self.folds:
fold.unfold()
tface = fold.unfoldedFace()
bface = fold.desFace
i = 0
for v in bface.verts:
v.co.x = tface.v[i].x
v.co.y = tface.v[i].y
v.co.z = tface.v[i].z
i+=1
Window.Redraw(Window.Types.VIEW3D)
return None
def addFace(self, poly, originalFace=None):
originalLength = len(self.des.verts)
self.des.verts.extend([Vector(vv.x, vv.y, vv.z) for vv in poly.v])
self.des.faces.extend([ range(originalLength, originalLength + poly.size()) ])
newFace = self.des.faces[len(self.des.faces)-1]
newFace.uv = [vv for vv in poly.v]
if(originalFace!=None and self.src.vertexColors):
newFace.col = [c for c in originalFace.col]
if(self.feedback!=None):
pu = str(int(self.fractionUnfolded() * 100))+"% unfolded"
howMuchDone = str(self.myFacesVisited)+" of "+str(len(self.src.faces))+" "+pu
self.feedback.say(howMuchDone)
#Window.DrawProgressBar (p, pu)
if(self.showProgress):
Window.Redraw(Window.Types.VIEW3D)
return newFace
def fractionUnfolded(self):
return float(self.myFacesVisited)/float(len(self.src.faces))
def assignUV(self, face, uv):
face.uv = [Vector(v.x, v.y) for v in uv.v]
def unfoldAll(feedback=None):
objects = Blender.Object.Get()
for object in objects:
if(object.getType()=='Mesh' and not(object.getName().endswith("_net")) and len(object.getData(False, True).faces)>1):
net = Net.createNet(object, feedback)
net.searchForUnfolding()
svg = SVGExporter(net, object.getName()+".svg")
svg.export()
unfoldAll = staticmethod(unfoldAll)
def searchForUnfolding(self, limit=-1):
overlaps = 1
attempts = 0
while(overlaps > 0 or attempts<limit):
self.unfold()
overlaps = self.report()
attempts+=1
return attempts
def fromSelected(feedback=None, netName=None):
return Net.createNet(Blender.Object.GetSelected()[0], feedback, netName)
fromSelected = staticmethod(fromSelected)
def clone(self, object=None):
if(object==None):
object = self.object
net = Net.createNet(object, self.feedback)
net.avoidsOverlaps = net.avoidsOverlaps
return net
def createNet(ob, feedback=None, netName=None):
mesh = ob.getData(mesh=1)
netObject = None
if(netName==None):
netName = ob.name[0:16]+"_net"
try:
netObject = Blender.Object.Get(netName)
netMesh = netObject.getData(False, True)
if(netMesh!=None):
netMesh.verts = None # clear the mesh
else:
netObject = Blender.Object.New("Mesh", netName)
except:
if(netObject==None):
netObject = Blender.Object.New("Mesh", netName)
netMesh = netObject.getData(False, True) # True means "as a Mesh not an NMesh"
try:
Blender.Scene.GetCurrent().objects.link(netObject)
except:
pass
try:
netMesh.materials = mesh.materials
netMesh.vertexColors = True
except:
print "Problem setting materials here"
net = Net(mesh, netMesh)
if mesh.faceUV and mesh.activeFace>=0 and (mesh.faces[mesh.activeFace].sel):
net.firstFaceIndex = mesh.activeFace
net.object = ob
net.feedback = feedback
return net
createNet = staticmethod(createNet)
def importNet(filename):
netName = filename.rstrip(".svg").replace("\\","/")
netName = netName[netName.rfind("/")+1:]
try:
netObject = Blender.Object.Get(netName)
except:
netObject = Blender.Object.New("Mesh", netName)
netObject.getData(mesh=1).name = netName
try:
Blender.Scene.GetCurrent().objects.link(netObject)
except:
pass
net = Net(None, netObject.getData(mesh=1))
handler = NetHandler(net)
xml.sax.parse(filename, handler)
Window.Redraw(Window.Types.VIEW3D)
return net
importNet = staticmethod(importNet)
def getSourceMesh(self):
return self.src
# determines the order in which to visit faces according to a local measure
class EdgeIterator:
def __init__(self, branch, otherConstructor=None):
self.branch = branch
self.bface = branch.getFace()
self.edge = branch.getFold().getEdge()
self.net = branch.getNet()
self.n = len(self.bface)
self.edges = []
self.i = 0
self.gooodness = 0
self.createEdges()
self.computeGoodness()
if(otherConstructor==None):
self.sequenceEdges()
def createEdges(self):
edge = None
e = Edge.edgesOfBlenderFace(self.net.getSourceMesh(), self.bface)
for edge in e:
if not(edge.isBlenderSeam() and edge!=self.edge):
self.edges.append(edge)
def sequenceEdges(self):
pass
def next(self):
edge = self.edges[self.i]
self.i+=1
return edge
def size(self):
return len(self.edges)
def reset(self):
self.i = 0
def hasNext(self):
return (self.i<len(self.edges))
def goodness(self):
return self.gooodness
def computeGoodness(self):
self.gooodness = 0
def rotate(self):
self.edges.append(self.edges.pop(0))
class RandomEdgeIterator(EdgeIterator):
def sequenceEdges(self):
random.seed()
random.shuffle(self.edges)
def goodness(self):
return random.randint(0, self.net.srcSize())
class Largest(EdgeIterator):
def sequenceEdges(self):
for e in self.edges:
f = self.net.facesAndEdges.findAdjacentFace(self.bface, e)
if(f!=None):
e.setGoodness(f.area)
self.edges.sort(lambda e1, e2: -e1.compare(e2))
def computeGoodness(self):
self.gooodness = self.bface.area
class Brightest(EdgeIterator):
def sequenceEdges(self):
for edge in self.edges:
f = self.net.facesAndEdges.findAdjacentFace(self.bface, edge)
if(f!=None):
b = 0
if self.net.src.vertexColors:
for c in f.col:
b+=(c.g+c.r+c.b)
rc = float(random.randint(0, self.net.srcSize())) / float(self.net.srcSize()) / 100.0
b+=rc
edge.setGoodness(b)
self.edges.sort(lambda e1, e2: e1.compare(e2))
def computeGoodness(self):
g = 0
if self.net.src.vertexColors:
for c in self.bface.col:
g+=(c.g+c.r+c.b)
self.gooodness = g
class OddEven(EdgeIterator):
i = True
def sequenceEdges(self):
OddEven.i = not(OddEven.i)
if(OddEven.i):
self.edges.reverse()
class Curvature(EdgeIterator):
def sequenceEdges(self):
p1 = Poly.fromBlenderFace(self.bface)
gg = 0.0
for edge in self.edges:
f = self.net.facesAndEdges.findAdjacentFace(self.bface, edge)
if(f!=None):
p2 = Poly.fromBlenderFace(f)
fold = Fold(None, p1, p2, edge)
fold.srcFace = f
b = Tree(self.net, self.branch, fold, self)
c = Curvature(b, False)
g = c.goodness()
gg+=g
edge.setGoodness(g)
self.edges.sort(lambda e1, e2: e1.compare(e2))
tg = (self.gooodness + gg)
rc = float(random.randint(0, self.net.srcSize())) / float(self.net.srcSize()) / 100.0
if(tg!=0.0):
self.gooodness = self.gooodness + rc / tg
def computeGoodness(self):
g = 0
for edge in self.edges:
f = self.net.facesAndEdges.findAdjacentFace(self.bface, edge)
if(f!=None):
p1 = Poly.fromBlenderFace(self.bface)
p2 = Poly.fromBlenderFace(f)
f = Fold(None, p1, p2, edge)
g += f.dihedralAngle()
self.gooodness = g
class Edge:
def __init__(self, v1=None, v2=None, mEdge=None, i=-1):
self.idx = i
if v1 and v2:
self.v1 = v1.copy()
self.v2 = v2.copy()
else:
self.v1 = mEdge.v1.co.copy()
self.v2 = mEdge.v2.co.copy()
self.v1n = -self.v1
self.vector = self.v1-self.v2
self.vector.resize3D()
self.vector.normalize()
self.bmEdge = mEdge
self.gooodness = 0.0
def fromBlenderFace(mesh, bface, i):
if(i>len(bface)-1):
return None
if(i==len(bface)-1):
j = 0
else:
j = i+1
edge = Edge( bface.v[i].co.copy(), bface.v[j].co.copy() )
edge.bEdge = mesh.findEdge(bface.v[i], bface.v[j])
edge.idx = i
return edge
fromBlenderFace=staticmethod(fromBlenderFace)
def edgesOfBlenderFace(mesh, bmFace):
edges = [mesh.edges[mesh.findEdges(edge[0], edge[1])] for edge in bmFace.edge_keys]
v = bmFace.verts
e = []
vi = v[0]
i=0
for j in xrange(1, len(bmFace)+1):
vj = v[j%len(bmFace)]
for ee in edges:
if((ee.v1.index==vi.index and ee.v2.index==vj.index) or (ee.v2.index==vi.index and ee.v1.index==vj.index)):
e.append(Edge(vi.co, vj.co, ee, i))
i+=1
vi = vj
return e
edgesOfBlenderFace=staticmethod(edgesOfBlenderFace)
def isBlenderSeam(self):
return (self.bmEdge.flag & Mesh.EdgeFlags.SEAM)
def isInFGon(self):
return (self.bmEdge.flag & Mesh.EdgeFlags.FGON)
def mapTo(self, poly):
if(self.idx==len(poly.v)-1):
j = 0
else:
j = self.idx+1
return Edge(poly.v[self.idx], poly.v[j])
def isDegenerate(self):
return self.vector.length==0
def vertices(s):
return [ [s.v1.x, s.v1.y, s.v1.z], [s.v2.x, s.v2.y,s.v2.z] ]
def key(self):
return self.bmEdge.key
def goodness(self):
return self.gooodness
def setGoodness(self, g):
self.gooodness = g
def compare(self, other):
if(self.goodness() > other.goodness()):
return +1
else:
return -1
# Does the given segment intersect this, for overlap detection.
# endpoints are allowed to touch the line segment
def intersects2D(self, s):
if(self.matches(s)):
return False
else:
i = Geometry.LineIntersect2D(self.v1, self.v2, s.v1, s.v2)
if(i!=None):
i.resize4D()
i.z = self.v1.z # hack to put the point on the same plane as this edge for comparison
return(i!=None and not(self.endsWith(i)))
def matches(self, s):
return ( (self.v1==s.v1 and self.v2==s.v2) or (self.v2==s.v1 and self.v1==s.v2) )
# Is the given point on the end of this segment ? 10-5 seems to an acceptable limit for closeness in Blender
def endsWith(self, aPoint, e=0.0001):
return ( (self.v1-aPoint).length < e or (self.v2-aPoint).length < e )
class Poly:
ids = -1
def __init__(self):
Poly.ids+=1
self.v = []
self.id = Poly.ids
self.boundz = None
self.edges = None
def getID(self):
return self.id
def normal(self):
a =self.v[0]
b=self.v[1]
c=self.v[2]
p = b-a
p.resize3D()
q = a-c
q.resize3D()
return p.cross(q)
def makeEdges(self):
self.edges = []
for i in xrange(self.nPoints()):
self.edges.append(Edge( self.v[i % self.nPoints()], self.v[ (i+1) % self.nPoints()] ))
def edgeAt(self, i):
if(self.edges==None):
self.makeEdges()
return self.edges[i]
def intersects2D(self, poly):
for i in xrange(self.nPoints()):
edge = self.edgeAt(i)
for j in xrange(poly.nPoints()):
if edge.intersects2D(poly.edgeAt(j)):
return True
return False
def isBad(self):
badness = 0
for vv in self.v:
if(vv.x!=vv.x or vv.y!=vv.y or vv.z!=vv.z): # Nan check
badness+=1
return (badness>0)
def midpoint(self):
x=y=z = 0.0
n = 0
for vv in self.v:
x+=vv.x
y+=vv.y
z+=vv.z
n+=1
return [ x/n, y/n, z/n ]
def centerAtOrigin(self):
mp = self.midpoint()
mp = -mp
toOrigin = TranslationMatrix(mp)
self.v = [(vv * toOrigin) for vv in self.v]
def move(self, tv):
mv = TranslationMatrix(tv)
self.v = [(vv * mv) for vv in self.v]
def scale(self, s):
mp = Vector(self.midpoint())
fromOrigin = TranslationMatrix(mp)
mp = -mp
toOrigin = TranslationMatrix(mp)
sm = ScaleMatrix(s, 4)
# Todo, the 3 lines below in 1 LC
self.v = [(vv * toOrigin) for vv in self.v]
self.v = [(sm * vv) for vv in self.v]
self.v = [(vv * fromOrigin) for vv in self.v]
def nPoints(self):
return len(self.v)
def size(self):
return len(self.v)
def rotated(self, axis, angle):
p = self.clone()
p.rotate(axis, angle)
return p
def rotate(self, axis, angle):
rotation = RotationMatrix(angle, 4, "r", axis.vector)
toOrigin = TranslationMatrix(axis.v1n)
fromOrigin = TranslationMatrix(axis.v1)
# Todo, the 3 lines below in 1 LC
self.v = [(vv * toOrigin) for vv in self.v]
self.v = [(rotation * vv) for vv in self.v]
self.v = [(vv * fromOrigin) for vv in self.v]
def moveAlong(self, vector, distance):
t = TranslationMatrix(vector)
s = ScaleMatrix(distance, 4)
ts = t*s
self.v = [(vv * ts) for vv in self.v]
def bounds(self):
if(self.boundz == None):
vv = [vv for vv in self.v]
vv.sort(key=lambda v: v.x)
minx = vv[0].x
maxx = vv[len(vv)-1].x
vv.sort(key=lambda v: v.y)
miny = vv[0].y
maxy = vv[len(vv)-1].y
self.boundz = [Vector(minx, miny, 0), Vector(maxx, maxy, 0)]
return self.boundz
def fromBlenderFace(bface):
p = Poly()
for vv in bface.v:
vec = Vector([vv.co[0], vv.co[1], vv.co[2] , 1.0])
p.v.append(vec)
return p
fromBlenderFace = staticmethod(fromBlenderFace)
def fromList(list):
p = Poly()
for vv in list:
vec = Vector( [vvv for vvv in vv] )
vec.resize4D()
p.v.append(vec)
return p
fromList = staticmethod(fromList)
def fromVectors(vectors):
p = Poly()
p.v.extend([v.copy().resize4D() for v in vectors])
return p
fromVectors = staticmethod(fromVectors)
def clone(self):
p = Poly()
p.v.extend(self.v)
return p
def hasVertex(self, ttv):
v = Mathutils.Vector(ttv)
v.normalize()
for tv in self.v:
vv = Mathutils.Vector(tv)
vv.normalize()
t = 0.00001
if abs(vv.x-v.x)<t and abs(vv.y-v.y)<t:
return True
return False
def overlays(self, poly):
if len(poly.v)!=len(self.v):
return False
c = 0
for point in poly.v:
if self.hasVertex(point):
c+=1
return c==len(self.v)
def sharesVertexWith(self, poly):
for point in poly.v:
if(self.hasVertex(point)):
return True
return False
def containsAnyOf(self, poly):
for point in poly.v:
if(not(self.hasVertex(point))):
if self.contains(point):
return True
return False
def toString(self):
return self.v
# This is the BEST algorithm for point-in-polygon detection.
# It's by W. Randolph Franklin.
# returns 1 for inside, 1 or 0 for edges
def contains(self, tp):
c = 0
j = len(self.v)-1
for i in xrange(len(self.v)):
if(i>0): j=i-1
cv = self.v[i]
nv = self.v[j]
if ((((cv.y<=tp.y) and (tp.y<nv.y)) or ((nv.y<=tp.y) and (tp.y<cv.y))) and (tp.x < (nv.x - cv.x) * (tp.y - cv.y) / (nv.y - cv.y) + cv.x)):
c = not(c)
return (c == 1)
class SVGExporter:
def __init__(self, net, filename):
self.net = net
print self.net.des.name
self.object = self.net.object
print "Exporting ", self.object
self.filename = filename
self.file = None
self.e = None
self.width = 1024
self.height = 768
def start(self):
print "Exporting SVG to ", self.filename
self.file = open(self.filename, 'w')
self.e = xml.sax.saxutils.XMLGenerator(self.file, "UTF-8")
atts = {}
atts["width"] = "100%"
atts["height"] = "100%"
atts["viewBox"] = str(self.vxmin)+" "+str(self.vymin)+" "+str(self.vxmax-self.vxmin)+" "+str(self.vymax-self.vymin)
atts["xmlns:nets"] = "http://celeriac.net/unfolder/rdf#"
atts["xmlns:xlink"] = "http://www.w3.org/1999/xlink"
atts["xmlns"] ="http://www.w3.org/2000/svg"
a = xml.sax.xmlreader.AttributesImpl(atts)
self.e.startDocument()
self.e.startElement("svg", a)
self.e.startElement("defs", xml.sax.xmlreader.AttributesImpl({}))
atts = {}
atts["type"]="text/css"
self.e.startElement("style", atts)
# can't find a proper way to do this
self.file.write("<![CDATA[")
self.file.write("polygon.poly{fill:white;stroke:black;stroke-width: 0.001}")
self.file.write("g#foldLines line.valley{stroke:white;stroke-width:0.01;stroke-dasharray:0.02,0.01,0.02,0.05}")
self.file.write("g#foldLines line.mountain{stroke:white;stroke-width:0.01;stroke-dasharray:0.02,0.04}")
self.file.write("]]>")
self.e.endElement("style")
self.e.endElement("defs")
#self.addClipPath()
self.addMeta()
def addMeta(self):
self.e.startElement("metadata", xml.sax.xmlreader.AttributesImpl({}))
self.e.startElement("nets:net", xml.sax.xmlreader.AttributesImpl({}))
for i in xrange(1, len(self.net.folds)):
fold = self.net.folds[i]
# AttributesNSImpl - documentation is rubbish. using this hack.
atts = {}
atts["nets:id"] = "fold"+str(fold.getID())
if(fold.parent!=None):
atts["nets:parent"] = "fold"+str(fold.parent.getID())
else:
atts["nets:parent"] = "null"
atts["nets:da"] = str(fold.dihedralAngle())
if(fold.parent!=None):
atts["nets:ofPoly"] = "poly"+str(fold.parent.foldingPoly.getID())
else:
atts["nets:ofPoly"] = ""
atts["nets:toPoly"] = "poly"+str(fold.foldingPoly.getID())
a = xml.sax.xmlreader.AttributesImpl(atts)
self.e.startElement("nets:fold", a)
self.e.endElement("nets:fold")
self.e.endElement("nets:net")
self.e.endElement("metadata")
def end(self):
self.e.endElement("svg")
self.e.endDocument()
print "grown."
def export(self):
self.net.unfoldTo(1)
bb = self.object.getBoundBox()
print bb
self.vxmin = bb[0][0]
self.vymin = bb[0][1]
self.vxmax = bb[7][0]
self.vymax = bb[7][1]
self.start()
atts = {}
atts["id"] = self.object.getName()
a = xml.sax.xmlreader.AttributesImpl(atts)
self.e.startElement("g", a)
#self.addUVImage()
self.addPolys()
self.addFoldLines()
#self.addCutLines()
self.e.endElement("g")
self.end()
def addClipPath(self):
atts = {}
atts["id"] = "netClip"
atts["clipPathUnits"] = "userSpaceOnUse"
atts["x"] = str(self.vxmin)
atts["y"] = str(self.vymin)
atts["width"] = "100%"
atts["height"] = "100%"
self.e.startElement("clipPath", atts)
self.addPolys()
self.e.endElement("clipPath")
def addUVImage(self):
image = Blender.Image.GetCurrent() #hmm - how to determine the desired image ?
if image==None:
return
ifn = image.getFilename()
ifn = self.filename.replace(".svg", ".jpg")
image.setFilename(ifn)
ifn = ifn[ifn.rfind("/")+1:]
image.save()
atts = {}
atts["clip-path"] = "url(#netClip)"
atts["xlink:href"] = ifn
self.e.startElement("image", atts)
self.e.endElement("image")
def addPolys(self):
atts = {}
atts["id"] = "polys"
a = xml.sax.xmlreader.AttributesImpl(atts)
self.e.startElement("g", a)
for i in xrange(len(self.net.folds)):
self.addPoly(self.net.folds[i])
self.e.endElement("g")
def addFoldLines(self):
atts = {}
atts["id"] = "foldLines"
a = xml.sax.xmlreader.AttributesImpl(atts)
self.e.startElement("g", a)
for i in xrange( 1, len(self.net.folds)):
self.addFoldLine(self.net.folds[i])
self.e.endElement("g")
def addFoldLine(self, fold):
edge = fold.edge.mapTo(fold.parent.foldingPoly)
if fold.dihedralAngle()>0:
foldType="valley"
else:
foldType="mountain"
atts={}
atts["x1"] = str(edge.v1.x)
atts["y1"] = str(edge.v1.y)
atts["x2"] = str(edge.v2.x)
atts["y2"] = str(edge.v2.y)
atts["id"] = "fold"+str(fold.getID())
atts["class"] = foldType
a = xml.sax.xmlreader.AttributesImpl(atts)
self.e.startElement("line", a)
self.e.endElement("line")
def addCutLines(self):
atts = {}
atts["id"] = "cutLines"
a = xml.sax.xmlreader.AttributesImpl(atts)
self.e.startElement("g", a)
for i in xrange( 1, len(self.net.cuts)):
self.addCutLine(self.net.cuts[i])
self.e.endElement("g")
def addCutLine(self, cut):
edge = cut.edge.mapTo(cut.parent.foldingPoly)
if cut.dihedralAngle()>0:
foldType="valley"
else:
foldType="mountain"
atts={}
atts["x1"] = str(edge.v1.x)
atts["y1"] = str(edge.v1.y)
atts["x2"] = str(edge.v2.x)
atts["y2"] = str(edge.v2.y)
atts["id"] = "cut"+str(cut.getID())
atts["class"] = foldType
a = xml.sax.xmlreader.AttributesImpl(atts)
self.e.startElement("line", a)
self.e.endElement("line")
def addPoly(self, fold):
face = fold.foldingPoly
atts = {}
if fold.desFace.col:
col = fold.desFace.col[0]
rgb = "rgb("+str(col.r)+","+str(col.g)+","+str(col.b)+")"
atts["fill"] = rgb
atts["class"] = "poly"
atts["id"] = "poly"+str(face.getID())
points = ""
first = True
for vv in face.v:
if(not(first)):
points+=','
first = False
points+=str(vv[0])
points+=' '
points+=str(vv[1])
atts["points"] = points
a = xml.sax.xmlreader.AttributesImpl(atts)
self.e.startElement("polygon", a)
self.e.endElement("polygon")
def fileSelected(filename):
try:
net = Registry.GetKey('unfolder')['net']
exporter = SVGExporter(net, filename)
exporter.export()
except:
print "Problem exporting SVG"
traceback.print_exc(file=sys.stdout)
fileSelected = staticmethod(fileSelected)
# for importing nets saved by the above exporter
class NetHandler(xml.sax.handler.ContentHandler):
def __init__(self, net):
self.net = net
self.first = (41==41)
self.currentElement = None
self.chars = None
self.currentAction = None
self.foldsPending = {}
self.polys = {}
self.actions = {}
self.actions["nets:fold"] = self.foldInfo
self.actions["line"] = self.cutOrFold
self.actions["polygon"] = self.createPoly
def setDocumentLocator(self, locator):
pass
def startDocument(self):
pass
def endDocument(self):
for fold in self.foldsPending.values():
face = self.net.addFace(fold.unfoldedFace())
fold.desFace = face
self.net.folds.append(fold)
self.net.addFace(self.first)
self.foldsPending = None
self.polys = None
def startPrefixMapping(self, prefix, uri):
pass
def endPrefixMapping(self, prefix):
pass
def startElement(self, name, attributes):
self.currentAction = None
try:
self.currentAction = self.actions[name]
except:
pass
if(self.currentAction!=None):
self.currentAction(attributes)
def endElement(self, name):
pass
def startElementNS(self, name, qname, attrs):
self.currentAction = self.actions[name]
if(self.currentAction!=None):
self.currentAction(attributes)
def endElementNS(self, name, qname):
pass
def characters(self, content):
pass
def ignorableWhitespace(self):
pass
def processingInstruction(self, target, data):
pass
def skippedEntity(self, name):
pass
def foldInfo(self, atts):
self.foldsPending[atts["nets:id"]] = atts
def createPoly(self, atts):
xy = re.split('[, ]' , atts["points"])
vectors = []
for i in xrange(0, len(xy)-1, 2):
v = Vector([float(xy[i]), float(xy[i+1]), 0.0])
vectors.append(v)
poly = Poly.fromVectors(vectors)
if(self.first==True):
self.first = poly
self.polys[atts["id"]] = poly
def cutOrFold(self, atts):
fid = atts["id"]
try:
fi = self.foldsPending[fid]
except:
pass
p1 = Vector([float(atts["x1"]), float(atts["y1"]), 0.0])
p2 = Vector([float(atts["x2"]), float(atts["y2"]), 0.0])
edge = Edge(p1, p2)
parent = None
ofPoly = None
toPoly = None
try:
parent = self.foldsPending[fi["nets:parent"]]
except:
pass
try:
ofPoly = self.polys[fi["nets:ofPoly"]]
except:
pass
try:
toPoly = self.polys[fi["nets:toPoly"]]
except:
pass
fold = Fold(parent, ofPoly , toPoly, edge, float(fi["nets:da"]))
self.foldsPending[fid] = fold
def fileSelected(filename):
try:
net = Net.importNet(filename)
try:
Registry.GetKey('unfolder')['net'] = net
except:
Registry.SetKey('unfolder', {})
Registry.GetKey('unfolder')['net'] = net
Registry.GetKey('unfolder')['lastpath'] = filename
except:
print "Problem importing SVG"
traceback.print_exc(file=sys.stdout)
fileSelected = staticmethod(fileSelected)
class GUI:
def __init__(self):
self.overlaps = Draw.Create(0)
self.ani = Draw.Create(0)
self.selectedFaces =0
self.search = Draw.Create(0)
self.diffuse = True
self.ancestors = Draw.Create(0)
self.noise = Draw.Create(0.0)
self.shape = Draw.Create(0)
self.nOverlaps = 1==2
self.iterators = [RandomEdgeIterator,Brightest,Curvature,EdgeIterator,OddEven,Largest]
self.iterator = RandomEdgeIterator
self.overlapsText = "*"
self.message = " "
def makePopupGUI(self):
useRandom = Draw.Create(0)
pub = []
pub.append(("Search", self.search, "Search for non-overlapping net (maybe forever)"))
pub.append(("Random", useRandom, "Random style net"))
ok = True
while ok:
ok = Blender.Draw.PupBlock("Unfold", pub)
if ok:
if useRandom.val:
self.iterator = RandomEdgeIterator
else:
self.iterator = Curvature
self.unfold()
def makeStandardGUI(self):
Draw.Register(self.draw, self.keyOrMouseEvent, self.buttonEvent)
def installScriptLink(self):
print "Adding script link for animation"
s = Blender.Scene.GetCurrent().getScriptLinks("FrameChanged")
if(s!=None and s.count("frameChanged.py")>0):
return
try:
script = Blender.Text.Get("frameChanged.py")
except:
script = Blender.Text.New("frameChanged.py")
script.write("import Blender\n")
script.write("import mesh_unfolder as Unfolder\n")
script.write("u = Blender.Registry.GetKey('unfolder')\n")
script.write("if u!=None:\n")
script.write("\tn = u['net']\n")
script.write("\tif(n!=None and n.animates):\n")
script.write("\t\tn.unfoldToCurrentFrame()\n")
Blender.Scene.GetCurrent().addScriptLink("frameChanged.py", "FrameChanged")
def unfold(self):
anc = self.ancestors.val
n = 0.0
s = True
self.nOverlaps = 0
searchLimit = 10
search = 1
Draw.Redraw(1)
net = None
name = None
try:
self.say("Unfolding...")
Draw.Redraw(1)
while(s):# and search < searchLimit):
if(net!=None):
name = net.des.name
net = Net.fromSelected(self, name)
net.setAvoidsOverlaps(not(self.overlaps.val))
print
print "Unfolding selected object"
net.edgeIteratorClass = self.iterator
print "Using ", net.edgeIteratorClass
net.animates = self.ani.val
self.diffuse = (self.ancestors.val==0)
net.diffuse = self.diffuse
net.generations = self.ancestors.val
net.noise = self.noise.val
print "even:", net.diffuse, " depth:", net.generations
net.unfold()
n = net.report()
t = "."
if(n<1.0):
t = "Overlaps>="+str(n)
else:
t = "A complete net."
self.nOverlaps = (n>=1)
if(self.nOverlaps):
self.say(self.message+" - unfolding failed - try again ")
elif(not(self.overlaps.val)):
self.say("Success. Complete net - no overlaps ")
else:
self.say("Unfolding complete")
self.ancestors.val = anc
s = (self.search.val and n>=1.0)
dict = Registry.GetKey('unfolder')
if(not(dict)):
dict = {}
dict['net'] = net
Registry.SetKey('unfolder', dict)
if(s):
net = net.clone()
search += 1
except(IndexError):
self.say("Please select an object to unfold")
except:
self.say("Problem unfolding selected object - see console for details")
print "Problem unfolding selected object:"
print sys.exc_info()[1]
traceback.print_exc(file=sys.stdout)
if(self.ani):
if Registry.GetKey('unfolder')==None:
print "no net!"
return
Registry.GetKey('unfolder')['net'].sortOutIPOSource()
self.installScriptLink()
Draw.Redraw(1)
def keyOrMouseEvent(self, evt, val):
if (evt == Draw.ESCKEY and not val):
Draw.Exit()
def buttonEvent(self, evt):
if (evt == 1):
self.unfold()
if (evt == 5):
try:
Registry.GetKey('unfolder')['net'].setAvoidsOverlaps(self.overlaps.val)
except:
pass
if (evt == 2):
print "Trying to set IPO curve"
try:
s = Blender.Object.GetSelected()
if(s!=None):
Registry.GetKey('unfolder')['net'].setIPOSource( s[0] )
print "Set IPO curve"
else:
print "Please select an object to use the IPO of"
except:
print "Problem setting IPO source"
Draw.Redraw(1)
if (evt == 6):
Draw.Exit()
if (evt == 7):
try:
if (Registry.GetKey('unfolder')['net']!=None):
Registry.GetKey('unfolder')['net'].animates = self.ani.val
if(self.ani):
Registry.GetKey('unfolder')['net'].sortOutIPOSource()
self.installScriptLink()
except:
print sys.exc_info()[1]
traceback.print_exc(file=sys.stdout)
Draw.Redraw(1)
if (evt == 19):
pass
if (evt == 87):
try:
if (Registry.GetKey('unfolder')['net']!=None):
Registry.GetKey('unfolder')['net'].assignUVs()
self.say("Assigned UVs")
except:
print sys.exc_info()[1]
traceback.print_exc(file=sys.stdout)
Draw.Redraw(1)
if(evt==91):
if( testOverlap() == True):
self.nOverlaps = 1
else:
self.nOverlaps = 0
Draw.Redraw(1)
if(evt==233):
f1 = Poly.fromBlenderFace(Blender.Object.GetSelected()[0].getData().faces[0])
f2 = Poly.fromBlenderFace(Blender.Object.GetSelected()[1].getData().faces[0])
print
print Blender.Object.GetSelected()[0].getName()
print Blender.Object.GetSelected()[1].getName()
print f1.intersects2D(f2)
print f2.intersects2D(f1)
if(evt==714):
Net.unfoldAll(self)
Draw.Redraw(1)
if(evt==713):
self.iterator = self.iterators[self.shape.val]
Draw.Redraw(1)
if(evt==92):
if( testContains() == True):
self.nOverlaps = 1
else:
self.nOverlaps = 0
Draw.Redraw(1)
if(evt==104):
try:
filename = "net.svg"
s = Blender.Object.GetSelected()
if(s!=None and len(s)>0):
filename = s[0].getName()+".svg"
else:
if (Registry.GetKey('unfolder')['net']!=None):
filename = Registry.GetKey('unfolder')['net'].des.name
if(filename==None):
filename="net.svg"
else:
filename=filename+".svg"
Window.FileSelector(SVGExporter.fileSelected, "Select filename", filename)
except:
print "Problem exporting SVG"
traceback.print_exc(file=sys.stdout)
if(evt==107):
try:
Window.FileSelector(NetHandler.fileSelected, "Select file")
except:
print "Problem importing SVG"
traceback.print_exc(file=sys.stdout)
def say(self, m):
self.message = m
Draw.Redraw(1)
Window.Redraw(Window.Types.SCRIPT)
def draw(self):
cw = 64
ch = 16
l = FlowLayout(32, cw, ch, 350, 64)
l.y = 70
self.search = Draw.Toggle("search", 19, l.nx(), l.ny(), l.cw, l.ch, self.search.val, "Search for non-overlapping mesh (potentially indefinitely)")
self.overlaps = Draw.Toggle("overlaps", 5, l.nx(), l.ny(), l.cw, l.ch, self.overlaps.val, "Allow overlaps / avoid overlaps - if off, will not place overlapping faces")
self.ani = Draw.Toggle("ani", 7, l.nx(), l.ny(), l.cw, l.ch, self.ani.val, "Animate net")
Draw.Button("uv", 87, l.nx(), l.ny(), l.cw, l.ch, "Assign net as UV to source mesh (overwriting existing UV)")
Draw.Button("Unfold", 1, l.nx(), l.ny(), l.cw, l.ch, "Unfold selected mesh to net")
Draw.Button("save", 104, l.nx(), l.ny(), l.cw, l.ch, "Save net as SVG")
Draw.Button("load", 107, l.nx(), l.ny(), l.cw, l.ch, "Load net from SVG")
#Draw.Button("test", 233, l.nx(), l.ny(), l.cw, l.ch, "test")
# unfolding enthusiasts - try uncommenting this
self.ancestors = Draw.Number("depth", 654, l.nx(), l.ny(), cw, ch, self.ancestors.val, 0, 9999, "depth of branching 0=diffuse")
#self.noise = Draw.Number("noise", 631, l.nx(), l.ny(), cw, ch, self.noise.val, 0.0, 1.0, "noisyness of branching")
#Draw.Button("UnfoldAll", 714, l.nx(), l.ny(), l.cw, l.ch, "Unfold all meshes and save their nets")
options = "order %t|random %x0|brightest %x1|curvature %x2|winding %x3| 1010 %x4|largest %x5"
self.shape = Draw.Menu(options, 713, l.nx(), l.ny(), cw, ch, self.shape.val, "shape of net")
Draw.Button("exit", 6, l.nx(), l.ny(), l.cw, l.ch, "exit")
BGL.glClearColor(0.3, 0.3, 0.3, 1)
BGL.glColor3f(0.3,0.3,0.3)
l.newLine()
BGL.glRasterPos2i(32, 100)
Draw.Text(self.message)
class FlowLayout:
def __init__(self, margin, cw, ch, w, h):
self.x = margin-cw-4
self.y = margin
self.cw = cw
self.ch = ch
self.width = w
self.height = h
self.margin = margin
def nx(self):
self.x+=(self.cw+4)
if(self.x>self.width):
self.x = self.margin
self.y-=self.ch+4
return self.x
def ny(self):
return self.y
def newLine(self):
self.y-=self.ch+self.margin
self.x = self.margin
# if xml is None, then dont bother running the script
if xml:
try:
sys.setrecursionlimit(10000)
gui = GUI()
gui.makeStandardGUI()
#gui.makePopupGUI()
except:
traceback.print_exc(file=sys.stdout)