curve_out.py

#export curve elements to heekscnc
import math
from draftlibs import fcvec,fcgeo
from FreeCAD import Vector,Base
import FreeCADGui
from pivy.coin import *

olEdges = []

shape1 = Part.Shape
for s in Gui.Selection.getSelectionEx():
    i = 0; j = 0
    if s.Object.Type == 'Sketcher::SketchObject':
        for e in s.Object.Geometry:
            while i < len(s.Object.Geometry):
                if not s.Object.Geometry[i].Construction:
                    olEdges.append(s.Object.Shape.Edges[j])
                    j = j+1
                i = i+1
    else:
        for e in s.Object.Shape.Edges:
                olEdges.append(s.Object.Shape.Edges[i])
                i = i+1

print "comment('Sketch from FreeCAD')"
print "curve = area.Curve()"

sorted_edges = []

sorted_edges = fcgeo.sortEdges(olEdges,olEdges[0].Vertexes[0])

#print "curve.append(area.Point(" , olEdges[0].Vertexes[-1].X , "," , olEdges[0].Vertexes[-1].Y, "))"
print "curve.append(area.Point(" , olEdges[0].Vertexes[0].X , "," , olEdges[0].Vertexes[0].Y, "))"

for s in sorted_edges:
    olEdges.append(s)
    if (isinstance(s.Curve,Part.Circle)):
        mp = fcgeo.findMidpoint(s)
        ce = s.Curve.Center
        tang1 = s.Curve.tangent(s.ParameterRange[0]) ; tang2 = s.Curve.tangent(s.ParameterRange[1])
        cross1 = Vector.cross(Base.Vector(tang1[0][0],tang1[0][1],tang1[0][2]),Base.Vector(tang2[0][0],tang2[0][1],tang2[0][2]))
        if cross1[2] > 0:
            direct = '1 ' #we seem to be working in a rh system in FreeCAD
        else:
            direct = '-1 '
        print "curve.append(area.Vertex(",direct, ", area.Point( ", s.Vertexes[-1].Point[0],", ",s.Vertexes[-1].Point[1], "), area.Point(", s.Curve.Center [0], ", " , s.Curve.Center[1], ")))"

    elif (isinstance(s.Curve,Part.Line)):
        print "curve.append(area.Point( ",s.Vertexes[-1].Point[0],", " ,s.Vertexes[-1].Point[1], "))"
    else:
        pass
#export curve elements to heekscnc
#to reverse the curve:
print "curve.Reverse()"

class point:
    "this class will print out the coords of a point after the user clicked a point on the screen"
    def __init__(self):
        self.view = FreeCADGui.ActiveDocument.ActiveView
        self.stack = []
        self.callback = self.view.addEventCallbackPivy(SoMouseButtonEvent.getClassTypeId(),self.getpoint)
    def getpoint(self,event_cb):
        event = event_cb.getEvent()
        if event.getState() == SoMouseButtonEvent.DOWN:
            pos = event.getPosition()
            point = self.view.getPoint(pos[0],pos[1])
            self.stack.append(point)
            if len(self.stack) == 1:
                #FreeCAD.Console.PrintMessage("a point at" +str(self.stack[0])+"\n")
                FreeCAD.Console.PrintMessage( "kurve_funcs.make_smaller( curve, start = area.Point("+ str(self.stack[0][0])+","+ str(self.stack[0][1]) + "))\n")
                #l = Part.Line(self.stack[0],self.stack[1])
                #shape = l.toShape()
                #Part.show(shape)
                self.view.removeEventCallbackPivy(SoMouseButtonEvent.getClassTypeId(),self.callback)

point()