Macro PartToVRML
Description
This macro converts selected parts to VRML meshes for small size and faster loading (VRML models Kicad and Blender compatible)
Script
The icone 
Macro_PartToVRML.FCMacro
# -*- coding: utf-8 -*-
# PartToVRML.FCMacro
# creates VRML model of selected object(s), with colors (for Kicad and Blender compatibility)
# useful messages on Report view
#
__title__ = "PartToVRML"
__author__ = "easyw-fc, hyOzd"
__url__ = "http://www.freecadweb.org/"
__version__ = "1.9.1"
__date__ = "03/02/2016"
__Comment__ = "This macro creates VRML model of selected object(s), with colors (for Kicad and Blender compatibility)"
__Web__ = "http://www.freecadweb.org/"
__Wiki__ = "http://www.freecadweb.org/wiki/index.php?title=Macro_PartToVRML"
__Icon__ = "/usr/lib/freecad/Mod/plugins/icons/Macro_PartToVRML.png"
__IconW__ = "C:/Users/User Name/AppData/Roaming/FreeCAD/Macro_PartToVRML.png"
__Help__ = "start the macro and follow the instructions"
__Status__ = "stable"
__Requires__ = "Freecad"
# FreeCAD VRML python exporter 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 3 of
# the License, or (at your option) any later version.
#
# This sw 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 expVrmlColor.FCMacro. If not, see
# <http://www.gnu.org/licenses/>.
## export VRML from FreeCAD is a python macro that will export simplified VRML of
## a (multi)selected Part or fused Part to VRML optimized to Kicad and compatible with Blender
## the size of VRML is much smaller compared to the one exported from FC Gui
## and the loading/rendering time is smaller too
## change mesh deviation to increase quality of VRML
## to do
# export material properties to vrml
import FreeCAD,FreeCADGui,Part,Mesh
import PySide
from PySide import QtGui, QtCore
from collections import namedtuple
import sys, os
from os.path import expanduser
#clearing previous messages
mw=Gui.getMainWindow()
c=mw.findChild(QtGui.QPlainTextEdit, "Python console")
c.clear()
r=mw.findChild(QtGui.QTextEdit, "Report view")
r.clear()
def say(msg):
FreeCAD.Console.PrintMessage(msg)
FreeCAD.Console.PrintMessage('\n')
# points: [Vector, Vector, ...]
# faces: [(pi, pi, pi), ], pi: point index
# color: (Red, Green, Blue), values range from 0 to 1.0
Mesh = namedtuple('Mesh', ['points', 'faces', 'color', 'transp'])
def shapeToMesh(shape, color, transp, scale=None):
mesh_deviation=0.03 #the smaller the best quality, 1 coarse; 0.03 good compromise :)
mesh_data = shape.tessellate(mesh_deviation)
points = mesh_data[0]
if scale != None:
points = map(lambda p: p*scale, points)
newMesh= Mesh(points = points,
faces = mesh_data[1],
color = color, transp=transp)
return newMesh
def exportVRML(objects, filepath):
"""Export given list of Mesh objects to a VRML file.
`Mesh` structure is defined at root."""
with open(filepath, 'w') as f:
# write the standard VRML header
f.write("#VRML V2.0 utf8\n\n")
for obj in objects:
f.write("Shape { geometry IndexedFaceSet \n{ coordIndex [")
# write coordinate indexes for each face
f.write(','.join("%d,%d,%d,-1" % f for f in obj.faces))
f.write("]\n") # closes coordIndex
f.write("coord Coordinate { point [")
# write coordinate points for each vertex
#f.write(','.join('%.3f %.3f %.3f' % (p.x, p.y, p.z) for p in obj.points))
f.write(','.join('%.3f %.3f %.3f' % (p.x, p.y, p.z) for p in obj.points))
f.write("]\n}") # closes Coordinate
#shape_col=(1.0, 0.0, 0.0)#, 0.0)
f.write("}\n") # closes points
#say(obj.color)
shape_col=obj.color[:-1] #remove last item
#say(shape_col)
shape_transparency=obj.transp
f.write("appearance Appearance{material Material{diffuseColor %f %f %f\n" % shape_col)
f.write("transparency %f}}" % shape_transparency)
f.write("}\n") # closes Shape
say(filepath+' written')
###
def export(componentObjs, fullfilePathName, scale=None):
""" Exports given ComponentModel object using FreeCAD.
`componentObjs` : a ComponentObjs list
`fullfilePathName` : name of the FC file, extension is important
"""
exp_name=componentObjs[0].Label
path, fname = os.path.split(fullfilePathName)
fname=os.path.splitext(fname)[0]
if scale != None:
filename=path+os.sep+exp_name+'.wrl'
else:
filename=path+os.sep+exp_name+'_1_1.wrl'
say(filename)
color=[]
Diffuse_color=[]
transparency=[]
for obj in componentObjs:
say(obj.Label)
color.append(Gui.ActiveDocument.getObject(obj.Name).ShapeColor)
transparency.append(Gui.ActiveDocument.getObject(obj.Name).Transparency/100.0)
#say("color")
#say(Gui.ActiveDocument.getObject(obj.Name).DiffuseColor)
Diffuse_color.append(Gui.ActiveDocument.getObject(obj.Name).DiffuseColor)
i=0
meshes=[]
#say("diffuse color")
#say(Diffuse_color)
indexColor=0;
color_vector=[]
applyDiffuse=0
for obj in componentObjs:
shape1=obj.Shape
single_color=Diffuse_color[i];
#check lenght color
#say("len color")
#say(len(single_color))
#colors less then faces
if(len(single_color)!=len(shape1.Faces)):
applyDiffuse=0;
#copy color to all faces
#else copy singolar colors for faces
else:
applyDiffuse=1;
for color in single_color:
color_vector.append(color)
#say("color_vector")
#say(color_vector)
for index in range(len(shape1.Faces)):
#say("color x")
#say(color_vector[indexColor])
singleFace=shape1.Faces[index]
if(applyDiffuse):
#say(color_vector[indexColor])
meshes.append(shapeToMesh(singleFace, color_vector[indexColor], transparency[i], scale))
else:
#say(single_color[0])
meshes.append(shapeToMesh(singleFace, single_color[0], transparency[i], scale))
indexColor=indexColor+1
#meshes.append(shapeToMesh(face, Diffuse_color[i], transparency[i], scale))
color_vector=[]
indexColor=0;
i=i+1
exportVRML(meshes, filename)
return
###
def go_export():
sel = FreeCADGui.Selection.getSelection()
if not sel:
FreeCAD.Console.PrintWarning("Select something first!\n\n")
msg="export VRML from FreeCAD is a python macro that will export simplified VRML of "
msg+="a (multi)selected Part or fused Part to VRML optimized to Kicad and compatible with Blender "
msg+="the size of VRML is much smaller compared to the one exported from FC Gui "
msg+="and the loading/rendering time is also smaller\n"
msg+="change mesh deviation to increase quality of VRML"
say(msg)
else:
objs = []
for obj in sel:
objs.append(obj)
#say(obj.Label)
#say(obj.Name)
say(fullFilePathName)
#say(objs)
export(objs, fullFilePathName, scale=None)
export(objs, fullFilePathName, 0.3937)
doc = FreeCAD.ActiveDocument
if doc!=None:
fullFilePathName=doc.FileName
if fullFilePathName=="":
home = expanduser("~")
fullFilePathName=home+os.sep+doc.Label+'.FCStd'
say('path not found, saving to '+fullFilePathName)
#say(fullFilePathName)
else:
say(fullFilePathName)
go_export()