Macro PartToVRML/fr

Description
Cette macro converti un objet Parts en objet VRML meshe pour les petites tailles et un chargement plus rapide utilisez (VRML models Kicad et Blender)

Script
L’icône pour votre barre d'outils

Macro_PartToVRML.FCMacro


 * 1) -*- coding: utf-8 -*-


 * 1) PartToVRML.FCMacro
 * 2) creates VRML model of selected object(s), with colors (for Kicad and Blender compatibility)
 * 3) useful messages on Report view

__title__ = "PartToVRML" __author__ = "easyw-fc, hyOzd" __url__    = "http://www.freecadweb.org/" __version__ = "1.9.2" __date__   = "22/02/2016"

__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"


 * 1) FreeCAD VRML python exporter is free software: you can redistribute it
 * 2) and/or modify it under the terms of the GNU General Public License
 * 3) as published by the Free Software Foundation, either version 3 of
 * 4) the License, or (at your option) any later version.
 * 5) This sw is distributed in the hope that it will be
 * 6) useful, but WITHOUT ANY WARRANTY; without even the implied warranty
 * 7) of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * 8) General Public License for more details.
 * 9) You should have received a copy of the GNU General Public License
 * 10) along with expVrmlColor.FCMacro.  If not, see
 * 11) .
 * 1) along with expVrmlColor.FCMacro.  If not, see
 * 2) .


 * 1) export VRML from FreeCAD is a python macro that will export simplified VRML of
 * 2) a (multi)selected Part or fused Part to VRML optimized to Kicad and compatible with Blender
 * 3) the size of VRML is much smaller compared to the one exported from FC Gui
 * 4) and the loading/rendering time is smaller too
 * 5) change mesh deviation to increase quality of VRML


 * 1) to do
 * 2)  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

mw=Gui.getMainWindow c=mw.findChild(QtGui.QPlainTextEdit, "Python console") c.clear r=mw.findChild(QtGui.QTextEdit, "Report view") r.clear
 * 1) clearing previous messages

def say(msg): FreeCAD.Console.PrintMessage(msg) FreeCAD.Console.PrintMessage('\n')

Mesh = namedtuple('Mesh', ['points', 'faces', 'color', 'transp'])
 * 1) points: [Vector, Vector, ...]
 * 2) faces: [(pi, pi, pi), ], pi: point index
 * 3) color: (Red, Green, Blue), values range from 0 to 1.0

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: fullFilePathName = os.path.dirname(os.path.abspath(fullFilePathName)) fullFilePathName=fullFilePathName+os.sep+doc.Label+'.FCStd' say(fullFilePathName) go_export

Links
La discussion forum export VRML from FreeCAD with python for smaller size, kicad and Blender compatible

La macro inverse, Macro_MeshToPart