Draft importSVG reimplentation of path and transformation parsing
All basic elements besides elliptic arcs and rounded rects are now supported
This commit is contained in:
Sebastian Hoogen
parent
6d86e84d28
commit
48c9e2fbe8
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@ -27,9 +27,13 @@ __url__ = ["http://free-cad.sourceforge.net"]
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'''
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This script imports SVG files in FreeCAD. Currently only reads the following entities:
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paths, lines, arcs ,rects, circles, ellipses, polygons, polylines.
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currently unsupported: image, rounded rect(rx,ry), transform attribute??
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paths, lines, circular arcs ,rects, circles, ellipses, polygons, polylines.
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currently unsupported: image, rounded rect(rx,ry), elliptical arcs
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'''
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#ToDo:
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# elliptical arc segments
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# rounded rects (elliptical arcs)
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# ignoring CDATA
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import xml.sax, string, FreeCAD, os, math, re, Draft
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from draftlibs import fcvec
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@ -229,43 +233,6 @@ def getrgb(color):
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g = str(hex(int(color[1]*255)))[2:].zfill(2)
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b = str(hex(int(color[2]*255)))[2:].zfill(2)
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return "#"+r+g+b
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def splitpathd(pathdstr):
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whitespacechars = [' ','\t','\r','\n']
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commandchars = ['m','M','l','L','h','H','v','V','a','A','c','C','q','Q','s','S','t','T','z','Z']
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numberchars = ['e','E','+','-','.','0','1','2','3','4','5','6','7','8','9']
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dlist=[]
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currentnumber=''
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state='whitespace'
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for dchar in pathdstr:
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if dchar in commandchars:
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if currentnumber:
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dlist.append(float(currentnumber))
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currentnumber = ''
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dlist.append(dchar)
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state='whitespace'
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elif state == 'whitespace':
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if dchar in whitespacechars:
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pass #continue
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elif dchar in numberchars:
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state = 'number'
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currentnumber = dchar
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else:
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print 'unexpected char %s %d %s' % (dchar,ord(dchar),state)
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elif state == 'number':
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if dchar in numberchars:
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currentnumber += dchar
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elif dchar in whitespacechars:
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dlist.append(float(currentnumber))
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currentnumber = ''
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else:
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print 'unexpected char %s %d %s' % (dchar,ord(dchar),state)
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#End of string/list
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if currentnumber:
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dlist.append(float(currentnumber))
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currentnumber = ''
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return dlist
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class svgHandler(xml.sax.ContentHandler):
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"this handler parses the svg files and creates freecad objects"
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@ -318,12 +285,15 @@ class svgHandler(xml.sax.ContentHandler):
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content = content.split()
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data[keyword]=content
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if 'style' in data:
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content = data['style'][0].replace(' ','')
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content = content.split(';')
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for i in content:
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pair = i.split(':')
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if len(pair)>1: data[pair[0]]=pair[1]
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if 'style' in data:
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if not data['style']:
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pass#empty style attribute stops inhertig from parent
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else:
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content = data['style'][0].replace(' ','')
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content = content.split(';')
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for i in content:
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pair = i.split(':')
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if len(pair)>1: data[pair[0]]=pair[1]
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for k in ['x','y','x1','y1','x2','y2','r','rx','ry','cx','cy','width','height']:
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if k in data:
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@ -351,7 +321,7 @@ class svgHandler(xml.sax.ContentHandler):
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if data['stroke-width'] != 'none':
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self.width = getsize(data['stroke-width'])
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if 'transform' in data:
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m = self.getMatrix(data['transform'])
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m = self.getMatrix(attrs.getValue('transform'))
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if name == "g":
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self.grouptransform.append(m)
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else:
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@ -359,38 +329,7 @@ class svgHandler(xml.sax.ContentHandler):
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else:
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if name == "g":
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self.grouptransform.append(FreeCAD.Matrix())
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'''
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print "existing grouptransform: ",self.grouptransform
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print "existing transform: ",self.transform
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if "translate" in tr:
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i0 = tr.index("translate")
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print "getting translate ",tr
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if "translate" in self.transform:
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self.transform['translate'] = self.transform['translate'].add(Vector(float(tr[i0+1]),-float(tr[i0+2]),0))
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else:
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self.transform['translate'] = Vector(float(tr[i0+1]),-float(tr[i0+2]),0)
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if "translate" in self.grouptransform:
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print "adding to group ",self.grouptransform['translate']
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self.transform['translate'] = self.grouptransform['translate'].add(self.transform['translate'])
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else:
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if "translate" in self.grouptransform:
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print "adding to group ",self.grouptransform['translate']
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self.transform['translate'] = self.grouptransform['translate']
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if "scale" in tr:
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i0 = tr.index("scale")
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if "scale" in self.transform:
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self.transform['scale'] = self.transform['scale'].add(Vector(float(tr[i0+1]),float(tr[i0+2]),0))
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else:
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print tr
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self.transform['scale'] = Vector(float(tr[i0+1]),float(tr[i0+2]),0)
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if "scale" in self.grouptransform:
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self.transform['scale'] = self.transform['scale'].add(self.grouptransform['scale'])
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else:
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if "scale" in self.grouptransform:
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self.transform['scale'] = self.grouptransform['scale']
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'''
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if (self.style == 1):
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self.color = self.col
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self.width = self.lw
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@ -415,9 +354,6 @@ class svgHandler(xml.sax.ContentHandler):
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relative = False
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firstvec = None
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pathdata = splitpathd(' '.join(data['d']))
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# print "debug: pathdata:",pathdata
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if "freecad:basepoint1" in data:
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p1 = data["freecad:basepoint1"]
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p1 = Vector(float(p1[0]),-float(p1[1]),0)
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@ -430,8 +366,9 @@ class svgHandler(xml.sax.ContentHandler):
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self.format(obj)
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pathdata = []
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self.lastdim = obj
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for d in pathdata:
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pathcommandsre=re.compile('\s*?([mMlLhHvVaAcCqQsStTzZ])\s*?([^mMlLhHvVaAcCqQsStTzZ]*)\s*?',re.DOTALL)
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for d,pointsstr in pathcommandsre.findall(' '.join(data['d'])):
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#for d in pathdata:
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if (d == "M"):
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command = "move"
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relative = False
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@ -515,215 +452,241 @@ class svgHandler(xml.sax.ContentHandler):
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relative = True
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smooth = True
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point = []
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else:
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try:
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point.append(float(d))
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except ValueError:
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pass
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pointlist = pointsstr.replace(',',' ').split()
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while pointlist:
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if pointlist:
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point.append(float(pointlist.pop(0)))
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print "command: ",command, ' point: ',point
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print "command: ",command, ' point: ',point
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if (len(point)==2) and (command=="move"):
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if path:
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sh = Part.Wire(path)
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if self.fill: sh = Part.Face(sh)
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sh = self.applyTrans(sh)
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obj = self.doc.addObject("Part::Feature",pathname)
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obj.Shape = sh
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self.format(obj)
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path = []
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if relative:
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lastvec = lastvec.add(Vector(point[0],-point[1],0))
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command="line"
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else:
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lastvec = Vector(point[0],-point[1],0)
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firstvec = lastvec
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print "move ",lastvec
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command = "line"
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lastpole = None
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point = []
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elif (len(point)==2) and (command=="line"):
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if relative:
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currentvec = lastvec.add(Vector(point[0],-point[1],0))
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else:
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currentvec = Vector(point[0],-point[1],0)
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if not fcvec.equals(lastvec,currentvec):
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if (len(point)==2) and (command=="move"):
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if path:
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sh = Part.Wire(path)
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if self.fill: sh = Part.Face(sh)
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sh = self.applyTrans(sh)
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obj = self.doc.addObject("Part::Feature",pathname)
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obj.Shape = sh
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self.format(obj)
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path = []
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if firstvec:
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lastvec = firstvec #Move relative to last move command not last draw command
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if relative:
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lastvec = lastvec.add(Vector(point[0],-point[1],0))
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command="line"
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else:
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lastvec = Vector(point[0],-point[1],0)
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firstvec = lastvec
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print "move ",lastvec
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command = "line"
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lastpole = None
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point = []
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elif (len(point)==2) and (command=="line"):
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if relative:
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currentvec = lastvec.add(Vector(point[0],-point[1],0))
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else:
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currentvec = Vector(point[0],-point[1],0)
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if not fcvec.equals(lastvec,currentvec):
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seg = Part.Line(lastvec,currentvec).toShape()
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print "line ",lastvec,currentvec
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lastvec = currentvec
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path.append(seg)
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lastpole = None
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point = []
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elif (len(point)==1) and (command=="horizontal"):
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if relative:
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currentvec = lastvec.add(Vector(point[0],0,0))
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else:
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lasty = path[-1].y
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currentvec = Vector(point[0],lasty,0)
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seg = Part.Line(lastvec,currentvec).toShape()
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print "line ",lastvec,currentvec
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lastvec = currentvec
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lastpole = None
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path.append(seg)
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lastpole = None
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point = []
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elif (len(point)==1) and (command=="horizontal"):
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if relative:
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currentvec = lastvec.add(Vector(point[0],0,0))
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else:
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lasty = path[-1].y
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currentvec = Vector(point[0],lasty,0)
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seg = Part.Line(lastvec,currentvec).toShape()
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lastvec = currentvec
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lastpole = None
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path.append(seg)
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point = []
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elif (len(point)==1) and (command=="vertical"):
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if relative:
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currentvec = lastvec.add(Vector(0,-point[0],0))
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else:
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lastx = path[-1].x
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currentvec = Vector(lastx,-point[0],0)
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seg = Part.Line(lastvec,currentvec).toShape()
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lastvec = currentvec
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lastpole = None
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path.append(seg)
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point = []
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elif (len(point)==7) and (command=="arc"):
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if relative:
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currentvec = lastvec.add(Vector(point[-2],-point[-1],0))
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else:
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currentvec = Vector(point[-2],-point[-1],0)
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chord = currentvec.sub(lastvec)
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# perp = chord.cross(Vector(0,0,-1))
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# here is a better way to find the perpendicular
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if point[4] == 1:
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# clockwise
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perp = fcvec.rotate2D(chord,-math.pi/2)
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else:
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# anticlockwise
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perp = fcvec.rotate2D(chord,math.pi/2)
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chord = fcvec.scale(chord,.5)
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if chord.Length > point[0]: a = 0
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else: a = math.sqrt(point[0]**2-chord.Length**2)
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s = point[0] - a
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perp = fcvec.scale(perp,s/perp.Length)
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midpoint = lastvec.add(chord.add(perp))
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seg = Part.Arc(lastvec,midpoint,currentvec).toShape()
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lastvec = currentvec
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lastpole = None
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path.append(seg)
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point = []
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elif (command == "close"):
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if not fcvec.equals(lastvec,firstvec):
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seg = Part.Line(lastvec,firstvec).toShape()
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path.append(seg)
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if path:
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sh = Part.Wire(path)
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if self.fill: sh = Part.Face(sh)
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sh = self.applyTrans(sh)
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obj = self.doc.addObject("Part::Feature",pathname)
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obj.Shape = sh
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self.format(obj)
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path = []
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point = []
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command = None
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elif (command=="cubic") and (((smooth==False) and (len(point)==6)) or (smooth==True and (len(point)==4))) :
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if smooth:
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if relative:
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currentvec = lastvec.add(Vector(point[2],-point[3],0))
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pole2 = lastvec.add(Vector(point[0],-point[1],0))
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else:
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currentvec = Vector(point[2],-point[3],0)
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pole2 = Vector(point[0],-point[1],0)
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if lastpole is not None and lastpole[0]=='cubic':
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pole1 = lastvec.sub(lastpole[1]).add(lastvec)
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else:
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pole1 = lastvec
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else: #not smooth
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if relative:
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currentvec = lastvec.add(Vector(point[4],-point[5],0))
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pole1 = lastvec.add(Vector(point[0],-point[1],0))
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pole2 = lastvec.add(Vector(point[2],-point[3],0))
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else:
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currentvec = Vector(point[4],-point[5],0)
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pole1 = Vector(point[0],-point[1],0)
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pole2 = Vector(point[2],-point[3],0)
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if not fcvec.equals(currentvec,lastvec):
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mainv = currentvec.sub(lastvec)
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pole1v = lastvec.add(pole1)
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pole2v = currentvec.add(pole2)
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print "cubic curve data:",mainv.normalize(),pole1v.normalize(),pole2v.normalize()
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if pole1.distanceToLine(lastvec,currentvec) < 10**(-1*Draft.precision()) and pole2.distanceToLine(lastvec,currentvec) < 10**(-1*Draft.precision()):
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print "straight segment"
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seg = Part.Line(lastvec,currentvec).toShape()
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point = []
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elif (len(point)==1) and (command=="vertical"):
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if relative:
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currentvec = lastvec.add(Vector(0,-point[0],0))
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else:
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print "cubic bezier segment"
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b = Part.BezierCurve()
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b.setPoles([lastvec,pole1,pole2,currentvec])
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seg = b.toShape()
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print "connect ",lastvec,currentvec
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lastvec = currentvec
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lastpole = ('cubic',pole2)
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path.append(seg)
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point = []
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elif (command=="quadratic") and (((smooth==False) and (len(point)==4)) or (smooth==True and (len(point)==2))) :
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if smooth:
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if relative:
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currentvec = lastvec.add(Vector(point[0],-point[1],0))
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else:
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currentvec = Vector(point[0],-point[1],0)
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if lastpole is not None and lastpole[0]=='quadratic':
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pole1 = lastvec.sub(lastpole[1]).add(lastvec)
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else:
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pole1 = lastvec
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else: #not smooth
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if relative:
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currentvec = lastvec.add(Vector(point[2],-point[3],0))
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pole1 = lastvec.add(Vector(point[0],-point[1],0))
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else:
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currentvec = Vector(point[2],-point[3],0)
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pole1 = Vector(point[0],-point[1],0)
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if not fcvec.equals(currentvec,lastvec):
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if pole1.distanceToLine(lastvec,currentvec) < 10**(-1*Draft.precision()):
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print "straight segment"
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seg = Part.Line(lastvec,currentvec).toShape()
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lastx = path[-1].x
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currentvec = Vector(lastx,-point[0],0)
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seg = Part.Line(lastvec,currentvec).toShape()
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lastvec = currentvec
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lastpole = None
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path.append(seg)
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point = []
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elif (len(point)==7) and (command=="arc"):
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#support for large-arc and x-rotation are missing
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rx,ry,xrotation, largeflag, sweepflag = point[0:5]
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if relative:
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currentvec = lastvec.add(Vector(point[-2],-point[-1],0))
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else:
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print "quadratic bezier segment"
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b = Part.BezierCurve()
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b.setPoles([lastvec,pole1,currentvec])
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seg = b.toShape()
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print "connect ",lastvec,currentvec
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lastvec = currentvec
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lastpole = ('quadratic',pole1)
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path.append(seg)
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point = []
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currentvec = Vector(point[-2],-point[-1],0)
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chord = currentvec.sub(lastvec)
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# perp = chord.cross(Vector(0,0,-1))
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# here is a better way to find the perpendicular
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if sweepflag == 1:
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# clockwise
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perp = fcvec.rotate2D(chord,-math.pi/2)
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else:
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# anticlockwise
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perp = fcvec.rotate2D(chord,math.pi/2)
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chord = fcvec.scale(chord,.5)
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if chord.Length > rx: a = 0
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else: a = math.sqrt(rx**2-chord.Length**2)
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s = rx - a
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perp = fcvec.scale(perp,s/perp.Length)
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midpoint = lastvec.add(chord.add(perp))
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seg = Part.Arc(lastvec,midpoint,currentvec).toShape()
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lastvec = currentvec
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lastpole = None
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path.append(seg)
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point = []
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elif (command=="cubic") and (((smooth==False) and (len(point)==6)) or (smooth==True and (len(point)==4))) :
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if smooth:
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if relative:
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currentvec = lastvec.add(Vector(point[2],-point[3],0))
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pole2 = lastvec.add(Vector(point[0],-point[1],0))
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else:
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currentvec = Vector(point[2],-point[3],0)
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pole2 = Vector(point[0],-point[1],0)
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if lastpole is not None and lastpole[0]=='cubic':
|
||||
pole1 = lastvec.sub(lastpole[1]).add(lastvec)
|
||||
else:
|
||||
pole1 = lastvec
|
||||
else: #not smooth
|
||||
if relative:
|
||||
currentvec = lastvec.add(Vector(point[4],-point[5],0))
|
||||
pole1 = lastvec.add(Vector(point[0],-point[1],0))
|
||||
pole2 = lastvec.add(Vector(point[2],-point[3],0))
|
||||
else:
|
||||
currentvec = Vector(point[4],-point[5],0)
|
||||
pole1 = Vector(point[0],-point[1],0)
|
||||
pole2 = Vector(point[2],-point[3],0)
|
||||
|
||||
if path:
|
||||
sh = Part.Wire(path)
|
||||
if self.fill: sh = Part.Face(sh)
|
||||
if not fcvec.equals(currentvec,lastvec):
|
||||
mainv = currentvec.sub(lastvec)
|
||||
pole1v = lastvec.add(pole1)
|
||||
pole2v = currentvec.add(pole2)
|
||||
print "cubic curve data:",mainv.normalize(),pole1v.normalize(),pole2v.normalize()
|
||||
if True and \
|
||||
pole1.distanceToLine(lastvec,currentvec) < 20**(-1*Draft.precision()) and \
|
||||
pole2.distanceToLine(lastvec,currentvec) < 20**(-1*Draft.precision()):
|
||||
print "straight segment"
|
||||
seg = Part.Line(lastvec,currentvec).toShape()
|
||||
else:
|
||||
print "cubic bezier segment"
|
||||
b = Part.BezierCurve()
|
||||
b.setPoles([lastvec,pole1,pole2,currentvec])
|
||||
seg = b.toShape()
|
||||
print "connect ",lastvec,currentvec
|
||||
lastvec = currentvec
|
||||
lastpole = ('cubic',pole2)
|
||||
path.append(seg)
|
||||
point = []
|
||||
|
||||
elif (command=="quadratic") and (((smooth==False) and (len(point)==4)) or (smooth==True and (len(point)==2))) :
|
||||
if smooth:
|
||||
if relative:
|
||||
currentvec = lastvec.add(Vector(point[0],-point[1],0))
|
||||
else:
|
||||
currentvec = Vector(point[0],-point[1],0)
|
||||
if lastpole is not None and lastpole[0]=='quadratic':
|
||||
pole1 = lastvec.sub(lastpole[1]).add(lastvec)
|
||||
else:
|
||||
pole1 = lastvec
|
||||
else: #not smooth
|
||||
if relative:
|
||||
currentvec = lastvec.add(Vector(point[2],-point[3],0))
|
||||
pole1 = lastvec.add(Vector(point[0],-point[1],0))
|
||||
else:
|
||||
currentvec = Vector(point[2],-point[3],0)
|
||||
pole1 = Vector(point[0],-point[1],0)
|
||||
|
||||
if not fcvec.equals(currentvec,lastvec):
|
||||
if True and pole1.distanceToLine(lastvec,currentvec) < 20**(-1*Draft.precision()):
|
||||
print "straight segment"
|
||||
seg = Part.Line(lastvec,currentvec).toShape()
|
||||
else:
|
||||
print "quadratic bezier segment"
|
||||
b = Part.BezierCurve()
|
||||
b.setPoles([lastvec,pole1,currentvec])
|
||||
seg = b.toShape()
|
||||
print "connect ",lastvec,currentvec
|
||||
lastvec = currentvec
|
||||
lastpole = ('quadratic',pole1)
|
||||
path.append(seg)
|
||||
point = []
|
||||
|
||||
#while pointlist or command:
|
||||
else:
|
||||
|
||||
if (command == "close"):
|
||||
if not fcvec.equals(lastvec,firstvec):
|
||||
seg = Part.Line(lastvec,firstvec).toShape()
|
||||
path.append(seg)
|
||||
if path: #the path should be closed by now
|
||||
sh = Part.Wire(path)
|
||||
if not sh.isClosed:
|
||||
#Code from wmayer forum p15549 to fix the tolerance problem
|
||||
comp=Part.Compound(path)
|
||||
sh = comp.connectEdgesToWires(False,10**(-1*Draft.precision())).Wires[0] #original tolerance = 0.00001
|
||||
if self.fill: sh = Part.Face(sh)
|
||||
sh = self.applyTrans(sh)
|
||||
obj = self.doc.addObject("Part::Feature",pathname)
|
||||
obj.Shape = sh
|
||||
self.format(obj)
|
||||
path = []
|
||||
if firstvec:
|
||||
lastvec = firstvec #Move relative to last move command not last draw command
|
||||
point = []
|
||||
command = None
|
||||
if path:
|
||||
sh = Part.Wire(path)
|
||||
if self.fill: sh = Part.Face(sh)
|
||||
sh = self.applyTrans(sh)
|
||||
obj = self.doc.addObject("Part::Feature",pathname)
|
||||
obj.Shape = sh
|
||||
self.format(obj)
|
||||
obj = self.doc.addObject("Part::Feature",pathname)
|
||||
obj.Shape = sh
|
||||
self.format(obj)
|
||||
|
||||
|
||||
# processing rects
|
||||
|
||||
if name == "rect":
|
||||
if not pathname: pathname = 'Rectangle'
|
||||
p1 = Vector(data['x'],-data['y'],0)
|
||||
p2 = Vector(data['x']+data['width'],-data['y'],0)
|
||||
p3 = Vector(data['x']+data['width'],-data['y']-data['height'],0)
|
||||
p4 = Vector(data['x'],-data['y']-data['height'],0)
|
||||
edges = []
|
||||
edges.append(Part.Line(p1,p2).toShape())
|
||||
edges.append(Part.Line(p2,p3).toShape())
|
||||
edges.append(Part.Line(p3,p4).toShape())
|
||||
edges.append(Part.Line(p4,p1).toShape())
|
||||
sh = Part.Wire(edges)
|
||||
if self.fill: sh = Part.Face(sh)
|
||||
edges = []
|
||||
# if ('rx' not in data or data['rx'] < 10**(-1*Draft.precision())) and \
|
||||
# ('ry' not in data or data['ry'] < 10**(-1*Draft.precision())): #negative values are invalid
|
||||
if True:
|
||||
p1 = Vector(data['x'],-data['y'],0)
|
||||
p2 = Vector(data['x']+data['width'],-data['y'],0)
|
||||
p3 = Vector(data['x']+data['width'],-data['y']-data['height'],0)
|
||||
p4 = Vector(data['x'],-data['y']-data['height'],0)
|
||||
edges.append(Part.Line(p1,p2).toShape())
|
||||
edges.append(Part.Line(p2,p3).toShape())
|
||||
edges.append(Part.Line(p3,p4).toShape())
|
||||
edges.append(Part.Line(p4,p1).toShape())
|
||||
else: #rounded edges
|
||||
rx = data.get('rx')
|
||||
ry = data.get('ry') or rx
|
||||
rx = rx or ry
|
||||
if rx > 2 * data['width']:
|
||||
rx = data['width'] / 2.0
|
||||
if ry > 2 * data['height']:
|
||||
ry = data['height'] / 2.0
|
||||
#TBD
|
||||
# Part.Ellipse(c,rx,ry).toShape() #needs a proxy object
|
||||
sh = Part.Wire(edges)
|
||||
if self.fill: sh = Part.Face(sh)
|
||||
sh = self.applyTrans(sh)
|
||||
obj = self.doc.addObject("Part::Feature",pathname)
|
||||
obj.Shape = sh
|
||||
self.format(obj)
|
||||
obj = self.doc.addObject("Part::Feature",pathname)
|
||||
obj.Shape = sh
|
||||
self.format(obj)
|
||||
|
||||
# processing lines
|
||||
|
||||
if name == "line":
|
||||
if not pathname: pathname = 'Line'
|
||||
p1 = Vector(float(data['x1'][0]),-float(data['y1'][0]),0)
|
||||
p2 = Vector(float(data['x2'][0]),-float(data['y2'][0]),0)
|
||||
p1 = Vector(data['x1'],-data['y1'],0)
|
||||
p2 = Vector(data['x2'],-data['y2'],0)
|
||||
sh = Part.Line(p1,p2).toShape()
|
||||
sh = self.applyTrans(sh)
|
||||
obj = self.doc.addObject("Part::Feature",pathname)
|
||||
|
|
@ -733,6 +696,8 @@ class svgHandler(xml.sax.ContentHandler):
|
|||
# processing polylines and polygons
|
||||
|
||||
if name == "polyline" or name == "polygon":
|
||||
'''a simpler implementation would be sh = Part.makePolygon([Vector(svgx,-svgy,0) for svgx,svgy in zip(points[0::2],points[1::2])])
|
||||
but there would be more difficlult to search for duplicate points beforehand.'''
|
||||
if not pathname: pathname = 'Polyline'
|
||||
points=[float(d) for d in data['points']]
|
||||
print points
|
||||
|
|
@ -823,9 +788,9 @@ class svgHandler(xml.sax.ContentHandler):
|
|||
if self.transform:
|
||||
vec = self.translateVec(vec,self.transform)
|
||||
print "own transform: ",self.transform, vec
|
||||
for i in range(len(self.grouptransform)):
|
||||
#vec = self.translateVec(vec,self.grouptransform[-i-1])
|
||||
vec = self.grouptransform[-i-1].multiply(vec)
|
||||
for transform in self.grouptransform[::-1]:
|
||||
#vec = self.translateVec(vec,transform)
|
||||
vec = transform.multiply(vec)
|
||||
print "applying vector: ",vec
|
||||
obj.Position = vec
|
||||
if gui:
|
||||
|
|
@ -846,9 +811,9 @@ class svgHandler(xml.sax.ContentHandler):
|
|||
if self.transform:
|
||||
print "applying object transform: ",self.transform
|
||||
sh = sh.transformGeometry(self.transform)
|
||||
for i in range(len(self.grouptransform)):
|
||||
print "applying group transform: ",self.grouptransform[-i-1]
|
||||
sh = sh.transformGeometry(self.grouptransform[-i-1])
|
||||
for transform in self.grouptransform[::-1]:
|
||||
print "applying group transform: ", transform
|
||||
sh = sh.transformGeometry(transform)
|
||||
return sh
|
||||
elif Draft.getType(sh) == "Dimension":
|
||||
pts = []
|
||||
|
|
@ -857,9 +822,9 @@ class svgHandler(xml.sax.ContentHandler):
|
|||
if self.transform:
|
||||
print "applying object transform: ",self.transform
|
||||
cp = self.transform.multiply(cp)
|
||||
for i in range(len(self.grouptransform)):
|
||||
print "applying group transform: ",self.grouptransform[-i-1]
|
||||
cp = self.grouptransform[-i-1].multiply(cp)
|
||||
for transform in self.grouptransform[::-1]:
|
||||
print "applying group transform: ",transform
|
||||
cp = transform.multiply(cp)
|
||||
pts.append(cp)
|
||||
sh.Start = pts[0]
|
||||
sh.End = pts[1]
|
||||
|
|
@ -871,27 +836,47 @@ class svgHandler(xml.sax.ContentHandler):
|
|||
|
||||
def getMatrix(self,tr):
|
||||
"returns a FreeCAD matrix from a svg transform attribute"
|
||||
s = ""
|
||||
for l in tr:
|
||||
s += l
|
||||
s += " "
|
||||
s=s.replace("("," ")
|
||||
s=s.replace(")"," ")
|
||||
s = s.strip()
|
||||
tr = s.split()
|
||||
transformre=re.compile('(matrix|translate|scale|rotate|skewX|skewY)\s*?\((.*?)\)',re.DOTALL)
|
||||
m = FreeCAD.Matrix()
|
||||
for i in range(len(tr)):
|
||||
if tr[i] == 'translate':
|
||||
vec = Vector(float(tr[i+1]),-float(tr[i+2]),0)
|
||||
m.move(vec)
|
||||
elif tr[i] == 'scale':
|
||||
vec = Vector(float(tr[i+1]),float(tr[i+2]),0)
|
||||
m.scale(vec)
|
||||
#elif tr[i] == 'rotate':
|
||||
# m.rotateZ(float(tr[i+1]))
|
||||
for transformation, arguments in transformre.findall(tr):
|
||||
argsplit=[float(arg) for arg in arguments.replace(',',' ').split()]
|
||||
#m.multiply(FreeCAD.Matrix (1,0,0,0,0,-1))
|
||||
print '%s:%s %s %d' % (transformation, arguments,argsplit,len(argsplit))
|
||||
if transformation == 'translate':
|
||||
tx = argsplit[0]
|
||||
ty = argsplit[1] if len(argsplit) > 1 else 0.0
|
||||
m.move(Vector(tx,-ty,0))
|
||||
elif transformation == 'scale':
|
||||
sx = argsplit[0]
|
||||
sy = argsplit[1] if len(argsplit) > 1 else sx
|
||||
m.scale(Vector(sx,sy,1))
|
||||
elif transformation == 'rotate':
|
||||
angle = argsplit[0]
|
||||
if len(argsplit) >= 3:
|
||||
cx = argsplit[1]
|
||||
cy = argsplit[2]
|
||||
m.move(Vector(cx,-cy,0))
|
||||
m.rotateZ(math.radians(-angle)) #mirroring one axis equals changing the direction of rotaion
|
||||
if len(argsplit) >= 3:
|
||||
m.move(Vector(-cx,cy,0))
|
||||
elif transformation == 'skewX':
|
||||
m=m.multiply(FreeCAD.Matrix(1,-math.tan(math.radians(argsplit[0]))))
|
||||
elif transformation == 'skewY':
|
||||
m=m.multiply(FreeCAD.Matrix(1,0,0,0,-math.tan(math.radians(argsplit[0]))))
|
||||
elif transformation == 'matrix':
|
||||
# '''transformation matrix:
|
||||
# FreeCAD SVG
|
||||
# (+A -C +0 +E) (A C 0 E)
|
||||
# (-B +D -0 -F) = (-Y) * (B D 0 F) *(-Y)
|
||||
# (+0 -0 +1 +0) (0 0 1 0)
|
||||
# (+0 -0 +0 +1) (0 0 0 1)'''
|
||||
m=m.multiply(FreeCAD.Matrix(argsplit[0],-argsplit[2],0,argsplit[4],-argsplit[1],argsplit[3],0,-argsplit[5]))
|
||||
else:
|
||||
print 'SKIPPED %s' % transformation
|
||||
print "m= ",m
|
||||
print "generating transformation: ",m
|
||||
return m
|
||||
|
||||
|
||||
def decodeName(name):
|
||||
"decodes encoded strings"
|
||||
try:
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user