f07f996c48
To allow successful Collada Export for Py3 and Py2, tested import of DAE file with colours from Blender to ensure no regression on the import side. Note: I had to download Pycollada to enable testing in Conda build.
292 lines
13 KiB
Python
292 lines
13 KiB
Python
#***************************************************************************
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#* *
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#* Copyright (c) 2011 *
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#* Yorik van Havre <yorik@uncreated.net> *
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#* *
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#* This program is free software; you can redistribute it and/or modify *
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#* it under the terms of the GNU Lesser General Public License (LGPL) *
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#* as published by the Free Software Foundation; either version 2 of *
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#* the License, or (at your option) any later version. *
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#* for detail see the LICENCE text file. *
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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 Library General Public License for more details. *
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#* *
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#* You should have received a copy of the GNU Library General Public *
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#* License along with this program; if not, write to the Free Software *
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#* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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#* USA *
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#* *
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#***************************************************************************
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import FreeCAD, Mesh, os, numpy, MeshPart, Arch, Draft
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if FreeCAD.GuiUp:
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from DraftTools import translate
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else:
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# \cond
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def translate(context,text):
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return text
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# \endcond
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## @package importDAE
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# \ingroup ARCH
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# \brief DAE (Collada) file format importer and exporter
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#
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# This module provides tools to import and export Collada (.dae) files.
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__title__="FreeCAD Collada importer"
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__author__ = "Yorik van Havre"
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__url__ = "http://www.freecadweb.org"
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DEBUG = True
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try:
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# Python 2 forward compatibility
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range = xrange
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except NameError:
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pass
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def checkCollada():
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"checks if collada if available"
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global collada
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COLLADA = None
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try:
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import collada
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except ImportError:
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FreeCAD.Console.PrintError(translate("Arch","pycollada not found, collada support is disabled.")+"\n")
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return False
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else:
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return True
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def triangulate(shape):
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"triangulates the given face"
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p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch")
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mesher = p.GetInt("ColladaMesher",0)
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tessellation = p.GetFloat("ColladaTessellation",1.0)
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grading = p.GetFloat("ColladaGrading",0.3)
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segsperedge = p.GetInt("ColladaSegsPerEdge",1)
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segsperradius = p.GetInt("ColladaSegsPerRadius",2)
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secondorder = p.GetBool("ColladaSecondOrder",False)
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optimize = p.GetBool("ColladaOptimize",True)
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allowquads = p.GetBool("ColladaAllowQuads",False)
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if mesher == 0:
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return shape.tessellate(tessellation)
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elif mesher == 1:
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return MeshPart.meshFromShape(Shape=shape,MaxLength=tessellation).Topology
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else:
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return MeshPart.meshFromShape(Shape=shape,GrowthRate=grading,SegPerEdge=segsperedge,
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SegPerRadius=segsperradius,SecondOrder=secondorder,Optimize=optimize,
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AllowQuad=allowquads).Topology
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def open(filename):
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"called when freecad wants to open a file"
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if not checkCollada():
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return
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docname = (os.path.splitext(os.path.basename(filename))[0]).encode("utf8")
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doc = FreeCAD.newDocument(docname)
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doc.Label = decode(docname)
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FreeCAD.ActiveDocument = doc
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read(filename)
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return doc
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def insert(filename,docname):
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"called when freecad wants to import a file"
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if not checkCollada():
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return
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try:
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doc = FreeCAD.getDocument(docname)
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except NameError:
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doc = FreeCAD.newDocument(docname)
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FreeCAD.ActiveDocument = doc
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read(filename)
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return doc
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def decode(name):
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"decodes encoded strings"
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try:
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decodedName = (name.decode("utf8"))
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except UnicodeDecodeError:
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try:
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decodedName = (name.decode("latin1"))
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except UnicodeDecodeError:
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FreeCAD.Console.PrintError(translate("Arch","Error: Couldn't determine character encoding"))
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decodedName = name
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return decodedName
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def read(filename):
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global col
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col = collada.Collada(filename, ignore=[collada.DaeUnsupportedError])
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# Read the unitmeter info from dae file and compute unit to convert to mm
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unitmeter = col.assetInfo.unitmeter or 1
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unit = unitmeter / 0.001
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#for geom in col.geometries:
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#for geom in col.scene.objects('geometry'):
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for node in col.scene.nodes:
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if list(node.objects("geometry")):
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color = None
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# retrieving material
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if "}" in node.xmlnode.tag:
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bt = node.xmlnode.tag.split("}")[0]+"}"
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gnode = node.xmlnode.find(bt+"instance_geometry")
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if gnode != None:
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bnode = gnode.find(bt+"bind_material")
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if bnode != None:
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tnode = bnode.find(bt+"technique_common")
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if tnode != None:
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mnode = tnode.find(bt+"instance_material")
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if mnode != None:
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if "target" in mnode.keys():
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mname = mnode.get("target").strip("#")
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for m in col.materials:
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if m.id == mname:
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e = m.effect
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if isinstance(e.diffuse,tuple):
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color = e.diffuse
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for geom in node.objects("geometry"):
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for prim in geom.primitives():
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#print(prim, dir(prim))
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meshdata = []
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if hasattr(prim,"triangles"):
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tset = prim.triangles()
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elif hasattr(prim,"triangleset"):
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tset = prim.triangleset()
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else:
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tset = []
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for tri in tset:
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face = []
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for v in tri.vertices:
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v = [x * unit for x in v]
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face.append([v[0],v[1],v[2]])
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meshdata.append(face)
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#print(meshdata)
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newmesh = Mesh.Mesh(meshdata)
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#print(newmesh)
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obj = FreeCAD.ActiveDocument.addObject("Mesh::Feature","Mesh")
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obj.Mesh = newmesh
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if color and FreeCAD.GuiUp:
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obj.ViewObject.ShapeColor = color
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def export(exportList,filename,tessellation=1):
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"called when freecad exports a file"
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if not checkCollada(): return
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p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch")
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scale = p.GetFloat("ColladaScalingFactor",1.0)
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scale = scale * 0.001 # from millimeters (FreeCAD) to meters (Collada)
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p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/View")
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c = p.GetUnsigned("DefaultShapeColor",4294967295)
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defaultcolor = (float((c>>24)&0xFF)/255.0,float((c>>16)&0xFF)/255.0,float((c>>8)&0xFF)/255.0)
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colmesh = collada.Collada()
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colmesh.assetInfo.upaxis = collada.asset.UP_AXIS.Z_UP
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# authoring info
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cont = collada.asset.Contributor()
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try:
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author = FreeCAD.ActiveDocument.CreatedBy
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except UnicodeEncodeError:
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author = FreeCAD.ActiveDocument.CreatedBy.encode("utf8")
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author = author.replace("<","")
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author = author.replace(">","")
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cont.author = author
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ver = FreeCAD.Version()
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appli = "FreeCAD v" + ver[0] + "." + ver[1] + " build" + ver[2] + "\n"
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cont.authoring_tool = appli
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print(author, appli)
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colmesh.assetInfo.contributors.append(cont)
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colmesh.assetInfo.unitname = "meter"
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colmesh.assetInfo.unitmeter = 1.0
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defaultmat = None
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objind = 0
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scenenodes = []
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objectslist = Draft.getGroupContents(exportList,walls=True,addgroups=True)
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objectslist = Arch.pruneIncluded(objectslist)
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for obj in objectslist:
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findex = numpy.array([])
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m = None
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if obj.isDerivedFrom("Part::Feature"):
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print("exporting object ",obj.Name, obj.Shape)
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new_shape = obj.Shape.copy()
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new_shape.Placement = obj.getGlobalPlacement()
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m = Mesh.Mesh(triangulate(new_shape))
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elif obj.isDerivedFrom("Mesh::Feature"):
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print("exporting object ",obj.Name, obj.Mesh)
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m = obj.Mesh
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elif obj.isDerivedFrom("App::Part"):
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for child in obj.OutList:
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objectslist.append(child)
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continue
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else:
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continue
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if m:
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Topology = m.Topology
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Facets = m.Facets
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# vertex indices
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vindex = numpy.empty(len(Topology[0]) * 3)
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for i in range(len(Topology[0])):
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v = Topology[0][i]
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vindex[list(range(i*3, i*3+3))] = (v.x*scale,v.y*scale,v.z*scale)
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# normals
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nindex = numpy.empty(len(Facets) * 3)
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for i in range(len(Facets)):
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n = Facets[i].Normal
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nindex[list(range(i*3, i*3+3))] = (n.x,n.y,n.z)
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# face indices
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findex = numpy.empty(len(Topology[1]) * 6, numpy.int64)
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for i in range(len(Topology[1])):
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f = Topology[1][i]
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findex[list(range(i*6, i*6+6))] = (f[0],i,f[1],i,f[2],i)
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print(len(vindex), " vert indices, ", len(nindex), " norm indices, ", len(findex), " face indices.")
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vert_src = collada.source.FloatSource("cubeverts-array"+str(objind), vindex, ('X', 'Y', 'Z'))
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normal_src = collada.source.FloatSource("cubenormals-array"+str(objind), nindex, ('X', 'Y', 'Z'))
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geom = collada.geometry.Geometry(colmesh, "geometry"+str(objind), obj.Name, [vert_src, normal_src])
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input_list = collada.source.InputList()
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input_list.addInput(0, 'VERTEX', "#cubeverts-array"+str(objind))
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input_list.addInput(1, 'NORMAL', "#cubenormals-array"+str(objind))
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matnode = None
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matref = "materialref"
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if hasattr(obj,"Material"):
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if obj.Material:
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if hasattr(obj.Material,"Material"):
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if "DiffuseColor" in obj.Material.Material:
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kd = tuple([float(k) for k in obj.Material.Material["DiffuseColor"].strip("()").split(",")])
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effect = collada.material.Effect("effect_"+obj.Material.Name, [], "phong", diffuse=kd, specular=(1,1,1))
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mat = collada.material.Material("mat_"+obj.Material.Name, obj.Material.Name, effect)
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colmesh.effects.append(effect)
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colmesh.materials.append(mat)
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matref = "ref_"+obj.Material.Name
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matnode = collada.scene.MaterialNode(matref, mat, inputs=[])
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if not matnode:
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if FreeCAD.GuiUp:
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if hasattr(obj.ViewObject,"ShapeColor"):
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kd = obj.ViewObject.ShapeColor[:3]
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effect = collada.material.Effect("effect_"+obj.Name, [], "phong", diffuse=kd, specular=(1,1,1))
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mat = collada.material.Material("mat_"+obj.Name, obj.Name, effect)
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colmesh.effects.append(effect)
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colmesh.materials.append(mat)
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matref = "ref_"+obj.Name
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matnode = collada.scene.MaterialNode(matref, mat, inputs=[])
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if not matnode:
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if not defaultmat:
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effect = collada.material.Effect("effect_default", [], "phong", diffuse=defaultcolor, specular=(1,1,1))
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defaultmat = collada.material.Material("mat_default", "default_material", effect)
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colmesh.effects.append(effect)
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colmesh.materials.append(defaultmat)
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matnode = collada.scene.MaterialNode(matref, defaultmat, inputs=[])
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triset = geom.createTriangleSet(findex, input_list, matref)
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geom.primitives.append(triset)
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colmesh.geometries.append(geom)
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geomnode = collada.scene.GeometryNode(geom, [matnode])
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node = collada.scene.Node("node"+str(objind), children=[geomnode])
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scenenodes.append(node)
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objind += 1
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myscene = collada.scene.Scene("myscene", scenenodes)
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colmesh.scenes.append(myscene)
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colmesh.scene = myscene
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colmesh.write(filename)
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FreeCAD.Console.PrintMessage(translate("Arch","file %s successfully created.") % filename)
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