client_send_triangles.py

import FreeCAD
import FreeCAD as App
import FreeCADGui as Gui
import Part
import Mesh
import MeshPart
import ocl
from websocket import create_connection
import json
import tempfile
import subprocess

def encodeobj(sel):
#get type of object
    if sel.TypeId.startswith('Mesh'):
        #it is a mesh already
        print 'was already mesh'
        mesh = sel
    elif sel.TypeId.startswith('Part') and \
        (sel.Shape.BoundBox.XLength > 0) and \
        (sel.Shape.BoundBox.YLength > 0) and \
        (sel.Shape.BoundBox.ZLength > 0):
            print 'this is a solid Part object'
            mesh = MeshPart.meshFromShape(sel.Shape,MaxLength=10)
    else:
        print 'we cannot work with this object'

    verts = []
    for f in mesh.Facets:
        p = f.Points[0];q=f.Points[1];r=f.Points[2]
        verts.append((p,q,r))
    xmin=sel.Shape.Boundbox.XMin
    xmax=sel.Shape.BoundBox.XMax
    ymin=sel.Shape.BoundBox.YMin
    ymax=sel.Shape.BoundBox.YMax
    zmax=sel.Shape.BoundBox.ZMax
    oclobj={}
    oclobj["xmin"]=xmin
    oclobj["xmax"]=xmax
    oclobj["ymin"]=ymin
    oclobj["ymax"]=ymax
    oclobj["zmax"]=zmax
    cutterDia = 2.0
    oclobj['cutterDia'] =cutterDia
    Ny=int(sel.Shape.BoundBox.YLength/cutterDia)  # number of lines in the y-direction
    oclobj['Ny']=Ny
    dy = float(ymax-ymin)/Ny
    oclobj['dy']=dy
    clearance_height= zmax + 4
    oclobj['clearance_height']=clearance_height
    feed_height = 0.3
    oclobj['feed_height'] = feed_height
    feed = 200
    oclobj['feed'] = feed
    plunge_feed = 100
    oclobj['plunge_feed'] = plunge_feed
    length=11.0
    oclobj['length'] = length
    oclobj['triangles'] = verts
    objlist = [oclobj]
    data = json.dumps(objlist)
    return data

def procsurf(data):
    ws = create_connection("ws://localhost:8888/ws")
    ws.send(data)
    code = ws.recv_data()
    gcode =  code[1]
    ngcfile = tempfile.NamedTemporaryFile(suffix=".ngc",delete=False)
    ngcfile.write(gcode)
    ngcfile.close()
    subprocess.call(["gvim", ngcfile.name])

#select an object in FreeCAD gui
sel = Gui.Selection.getSelection()[0]
data = encodeobj(sel)
procsurf(data)