def utility_create_scad(self, scadCode, name):
with tempfile.TemporaryDirectory() as temp_dir:
filename = temp_dir + os.path.sep + name + ".scad"
f = open(filename,"w+")
f.write(scadCode)
f.close()
return importCSG.open(filename)
def utility_create_scad(self, scadCode, name):
filename = self.temp_dir.name + os.path.sep + name + ".scad"
print(f"Creating {filename}")
f = open(filename, "w+")
f.write(scadCode)
f.close()
return importCSG.open(filename)
def convert_openscad_to_step(scad_filename,
step_filename,
objname='difference'):
# NOTES:
# * Works with ubuntu 18.04 (python 2.7.17 and freecad 0.16)
# * Needs rework for ubuntu 20.04 (python 3.8.2 and freecad 0.18.4)
# TODO: automatically determine the top level object (objname)
part_name = os.path.basename(scad_filename)
part_name = part_name.replace(".scad", "")
importCSG.open(scad_filename)
FreeCAD.setActiveDocument(part_name)
part = FreeCAD.getDocument(part_name).getObject(objname)
Part.export([part], step_filename)
def test_import_sphere(self):
with tempfile.TemporaryDirectory() as temp_dir:
filename = temp_dir + os.path.sep + "sphere.scad"
f = open(filename,"w+")
f.write("sphere(10.0);")
f.close()
doc = importCSG.open(filename)
sphere = doc.getObject("sphere")
self.assertTrue (sphere is not None)
self.assertTrue (sphere.Radius == 10.0)
FreeCAD.closeDocument(doc.Name)
def test_import_polygon_path(self):
with tempfile.TemporaryDirectory() as temp_dir:
filename = temp_dir + os.path.sep + "polygon_path.scad"
f = open(filename,"w+")
f.write("polygon([[0,0],[100,0],[130,50],[30,50]], paths=[[0,1,2,3]]);")
f.close()
doc = importCSG.open(filename)
wire = doc.ActiveObject # With paths, the polygon gets created as a wire...
self.assertTrue (wire is not None)
self.assertAlmostEqual (wire.Shape.Area, 5000.0)
FreeCAD.closeDocument(doc.Name)
def test_import_polygon_nopath(self):
with tempfile.TemporaryDirectory() as temp_dir:
filename = temp_dir + os.path.sep + "polygon_nopath.scad"
f = open(filename,"w+")
f.write("polygon(points=[[0,0],[100,0],[130,50],[30,50]]);")
f.close()
doc = importCSG.open(filename)
polygon = doc.getObject("polygon")
self.assertTrue (polygon is not None)
self.assertAlmostEqual (polygon.Shape.Area, 5000.0)
FreeCAD.closeDocument(doc.Name)
def test_import_cylinder(self):
with tempfile.TemporaryDirectory() as temp_dir:
filename = temp_dir + os.path.sep + "cylinder.scad"
f = open(filename,"w+")
f.write("cylinder(50.0,d=10.0);")
f.close()
doc = importCSG.open(filename)
cylinder = doc.getObject("cylinder")
self.assertTrue (cylinder is not None)
self.assertTrue (cylinder.Radius == 5.0)
self.assertTrue (cylinder.Height == 50.0)
FreeCAD.closeDocument(doc.Name)
def test_import_square(self):
with tempfile.TemporaryDirectory() as temp_dir:
filename = temp_dir + os.path.sep + "square.scad"
f = open(filename,"w+")
f.write("square([1.0,2.0]);")
f.close()
doc = importCSG.open(filename)
square = doc.getObject("square")
self.assertTrue (square is not None)
self.assertTrue (square.Length == 1.0)
self.assertTrue (square.Width == 2.0)
FreeCAD.closeDocument(doc.Name)
def test_import_text(self):
with tempfile.TemporaryDirectory() as temp_dir:
filename = temp_dir + os.path.sep + "text.scad"
f = open(filename,"w+")
f.write("text(\"X\");") # Keep it short to keep the test fast-ish
f.close()
try:
doc = importCSG.open(filename)
text = doc.getObject("text")
self.assertTrue (text is not None)
FreeCAD.closeDocument(doc.Name)
except Exception:
pass # We may not have the DXF importer available
def test_open_csg(self):
testfile = join(self.test_dir, "CSG.csg")
doc = importCSG.open(testfile)
# Doc should now contain three solids: a union, an intersection, and a difference
union = doc.getObject("union")
intersection = doc.getObject("intersection")
difference = doc.getObject("difference")
self.assertTrue (union is not None)
self.assertTrue (intersection is not None)
self.assertTrue (difference is not None)
FreeCAD.closeDocument("CSG")
def test_import_polyhedron(self):
with tempfile.TemporaryDirectory() as temp_dir:
filename = temp_dir + os.pathsep + "polyhedron.scad"
f = open(filename, "w+")
f.write("""
polyhedron(
points=[ [10,10,0],[10,-10,0],[-10,-10,0],[-10,10,0], // the four points at base
[0,0,10] ], // the apex point
faces=[ [0,1,4],[1,2,4],[2,3,4],[3,0,4], // each triangle side
[1,0,3],[2,1,3] ] // two triangles for square base
);
""")
f.close()
doc = importCSG.open(filename)
polyhedron = doc.ActiveObject # With paths, the polygon gets created as a wire...
self.assertTrue(polyhedron is not None)
self.assertAlmostEqual(polyhedron.Shape.Volume, 1333.3333, 4)
FreeCAD.closeDocument(doc.Name)
if not len(sys.argv) == 3:
print("Usage: %s file.csg file.step" % sys.argv[0])
sys.exit(1)
file_input = sys.argv[1]
file_output = sys.argv[2]
print("Converting %s to %s" % (file_input, file_output))
sys.path.append("/Applications/FreeCAD.app/Contents/Resources/lib")
import FreeCAD
import importCSG
import Part
d = importCSG.open(file_input)
o = []
# Select parent node
for i in d.Objects:
if not i.InList:
o.append(i)
print(len(o))
quit()
# Perform the Fusion
App.activeDocument().addObject("Part::MultiFuse", "Fusion")
App.activeDocument().Fusion.Shapes = o
App.ActiveDocument.recompute()
# Then the Refine
# -*- coding: utf-8 -*- # scad-to-step.py # FreeCAD macro to import *.scad and export *.step # Brian K. White - [email protected] # Requires: # * foo.scad file, where "foo" is passed via environment variable MODEL=foo # * freecad with openscad workbench installed and configured: # * path to openscad binary # * use view provider in tree view # * use multimatrix feature import Part import importCSG import os MODEL = os.environ['MODEL'] d = importCSG.open(MODEL + '.scad') s = Part.getShape(d.TopologicalSortedObjects[0]) n = s.removeSplitter() n.exportStep(MODEL + '.step')
