Macro Da Part a VRML

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Icona macro generica. Crea la tua icona personale con lo stesso nome della macro Da Part a VRML

Descrizione
Converte le parti selezionate in mesh VRML.

Versione macro: 1.9.2
Ultima modifica: 2016-02-22
Autore
Easyw-fc
Download
None
Link
Versione macro
1.9.2
Data ultima modifica
2016-02-22
Versioni di FreeCAD
None
Scorciatoia
Nessuna
Vedere anche
Nessuno


Descrizione

Questa macro converte le parti selezionate in mesh VRML per caricare velocemente oggetti di piccole dimensioni (è compatibile con modelli VRML Kicad e Blender)

Script

L'icona PartToVRML.png

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__ = "1.9.2"
__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"

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

Links

La discussione nel forum: export VRML from FreeCAD with python for smaller size, kicad and Blender compatible

La macro inversa, Macro_MeshToPart