def test_wires_out_of_scope(self):
# check pointers going out of scope
wire = next(topo.wires())
_edges, _vertices = [], []
for edg in WireExplorer(wire).ordered_edges():
_edges.append(edg)
for edg in _edges:
self.assertFalse(edg.IsNull())
for vert in WireExplorer(wire).ordered_vertices():
_vertices.append(vert)
for v in _vertices:
self.assertFalse(v.IsNull())
def build_plate(polygon, points):
'''
build a surface from a constraining polygon(s) and point(s)
@param polygon: list of polygons ( TopoDS_Shape)
@param points: list of points ( gp_Pnt )
'''
# plate surface
bpSrf = GeomPlate_BuildPlateSurface(3, 15, 2)
# add curve constraints
for poly in polygon:
for edg in WireExplorer(poly).ordered_edges():
c = BRepAdaptor_HCurve()
c.ChangeCurve().Initialize(edg)
constraint = BRepFill_CurveConstraint(c.GetHandle(), 0)
bpSrf.Add(constraint.GetHandle())
# add point constraint
for pt in points:
bpSrf.Add(GeomPlate_PointConstraint(pt, 0).GetHandle())
bpSrf.Perform()
maxSeg, maxDeg, critOrder = 9, 8, 0
tol = 1e-4
dmax = max([tol, 10 * bpSrf.G0Error()])
srf = bpSrf.Surface()
plate = GeomPlate_MakeApprox(srf, tol, maxSeg, maxDeg, dmax, critOrder)
uMin, uMax, vMin, vMax = srf.GetObject().Bounds()
return make_face(plate.Surface(), uMin, uMax, vMin, vMax, 1e-4)
def wire_gcode(wire):
print(f'Wire Orientation: {o(wire)}')
if wire.Orientation() == TopAbs_REVERSED:
wire.Reverse()
for edge in WireExplorer(wire).ordered_edges():
print(f'Edge Orientation: {o(edge)}')
tmp = BRepAdaptor_Curve(edge)
# get underlying curve
c, start, end = BRep_Tool.Curve(edge)
# display start and endpoints of curve
start_point = tmp.Value(tmp.FirstParameter())
end_point = tmp.Value(tmp.LastParameter())
if edge.Orientation() == TopAbs_FORWARD:
display.DisplayColoredShape(
BRepBuilderAPI_MakeVertex(start_point).Vertex(), "BLUE")
display.DisplayColoredShape(
BRepBuilderAPI_MakeVertex(end_point).Vertex(), "RED")
else:
display.DisplayColoredShape(
BRepBuilderAPI_MakeVertex(start_point).Vertex(), "RED")
display.DisplayColoredShape(
BRepBuilderAPI_MakeVertex(end_point).Vertex(), "BLUE")
# display individual curve
display.DisplayShape(edge, update=True)
time.sleep(1)
def mesh_model(model, res_path, convert=True, all_edges=True):
fil = model.split("/")[-1][:-5]
folder = "/".join(model.split("/")[:-1])
with fileinput.FileInput(model, inplace=True) as fi:
for line in fi:
print(line.replace(
"UNCERTAINTY_MEASURE_WITH_UNIT( LENGTH_MEASURE( 1.00000000000000E-06 )",
"UNCERTAINTY_MEASURE_WITH_UNIT( LENGTH_MEASURE( 1.00000000000000E-17 )"
),
end='')
occ_steps = read_step_file(model)
bt = BRep_Tool()
for occ_cnt in range(len(occ_steps)):
if convert:
try:
nurbs_converter = BRepBuilderAPI_NurbsConvert(
occ_steps[occ_cnt])
nurbs_converter.Perform(occ_steps[occ_cnt])
nurbs = nurbs_converter.Shape()
except:
print("Conversion failed")
continue
else:
nurbs = occ_steps[occ_cnt]
mesh = BRepMesh_IncrementalMesh(occ_steps[occ_cnt], 0.9, False, 0.5,
True)
mesh.Perform()
if not mesh.IsDone():
print("Mesh is not done.")
continue
occ_topo = TopologyExplorer(nurbs)
occ_top = Topo(nurbs)
occ_topo1 = TopologyExplorer(occ_steps[occ_cnt])
occ_top1 = Topo(occ_steps[occ_cnt])
d1_feats = []
d2_feats = []
t_curves = []
tr_curves = []
stats = {}
stats["model"] = model
total_edges = 0
total_surfs = 0
stats["curves"] = []
stats["surfs"] = []
c_cnt = 0
t_cnt = 0
# Iterate over edges
for edge in occ_topo.edges():
curve = BRepAdaptor_Curve(edge)
stats["curves"].append(edge_map[curve.GetType()])
d1_feat = convert_curve(curve)
if edge_map[curve.GetType()] == "Other":
continue
for f in occ_top.faces_from_edge(edge):
if f == None:
print("Broken face")
continue
su = BRepAdaptor_Surface(f)
c = BRepAdaptor_Curve2d(edge, f)
t_curve = {
"surface": f,
"3dcurve": edge,
"3dcurve_id": c_cnt,
"2dcurve_id": t_cnt
}
t_curves.append(t_curve)
tr_curves.append(convert_2dcurve(c))
t_cnt += 1
d1_feats.append(d1_feat)
c_cnt += 1
total_edges += 1
patches = []
faces1 = list(occ_topo1.faces())
# Iterate over faces
for fci, face in enumerate(occ_topo.faces()):
surf = BRepAdaptor_Surface(face)
stats["surfs"].append(surf_map[surf.GetType()])
d2_feat = convert_surface(surf)
if surf_map[surf.GetType()] == "Other":
continue
for tc in t_curves:
if tc["surface"] == face:
patch = {
"3dcurves": [],
"2dcurves": [],
"orientations": [],
"surf_orientation": face.Orientation(),
"wire_ids": [],
"wire_orientations": []
}
for wc, fw in enumerate(occ_top.wires_from_face(face)):
patch["wire_orientations"].append(fw.Orientation())
if all_edges:
edges = [
i for i in WireExplorer(fw).ordered_edges()
]
else:
edges = list(occ_top.edges_from_wire(fw))
for fe in edges:
for ttc in t_curves:
if ttc["3dcurve"].IsSame(fe) and tc[
"surface"] == ttc["surface"]:
patch["3dcurves"].append(ttc["3dcurve_id"])
patch["2dcurves"].append(ttc["2dcurve_id"])
patch["wire_ids"].append(wc)
orientation = fe.Orientation()
patch["orientations"].append(orientation)
patches.append(patch)
break
location = TopLoc_Location()
facing = (bt.Triangulation(faces1[fci], location))
if facing != None:
tab = facing.Nodes()
tri = facing.Triangles()
verts = []
for i in range(1, facing.NbNodes() + 1):
verts.append(list(tab.Value(i).Coord()))
faces = []
for i in range(1, facing.NbTriangles() + 1):
index1, index2, index3 = tri.Value(i).Get()
faces.append([index1 - 1, index2 - 1, index3 - 1])
os.makedirs(res_path, exist_ok=True)
igl.write_triangle_mesh(
"%s/%s_%03i_mesh_%04i.obj" % (res_path, fil, occ_cnt, fci),
np.array(verts), np.array(faces))
d2_feat["faces"] = faces
d2_feat["verts"] = verts
else:
print("Missing triangulation")
continue
d2_feats.append(d2_feat)
total_surfs += 1
bbox = get_boundingbox(occ_steps[occ_cnt], use_mesh=False)
xmin, ymin, zmin, xmax, ymax, zmax = bbox[:6]
bbox1 = [
"%.2f" % xmin,
"%.2f" % ymin,
"%.2f" % zmin,
"%.2f" % xmax,
"%.2f" % ymax,
"%.2f" % zmax,
"%.2f" % (xmax - xmin),
"%.2f" % (ymax - ymin),
"%.2f" % (zmax - zmin)
]
stats["#edges"] = total_edges
stats["#surfs"] = total_surfs
# Fix possible orientation problems
if convert:
for p in patches:
# Check orientation of first curve
if len(p["2dcurves"]) >= 2:
cur = tr_curves[p["2dcurves"][0]]
nxt = tr_curves[p["2dcurves"][1]]
c_ori = p["orientations"][0]
n_ori = p["orientations"][1]
if c_ori == 0:
pole0 = np.array(cur["poles"][0])
pole1 = np.array(cur["poles"][-1])
else:
pole0 = np.array(cur["poles"][-1])
pole1 = np.array(cur["poles"][0])
if n_ori == 0:
pole2 = np.array(nxt["poles"][0])
pole3 = np.array(nxt["poles"][-1])
else:
pole2 = np.array(nxt["poles"][-1])
pole3 = np.array(nxt["poles"][0])
d02 = np.abs(pole0 - pole2)
d12 = np.abs(pole1 - pole2)
d03 = np.abs(pole0 - pole3)
d13 = np.abs(pole1 - pole3)
amin = np.argmin([d02, d12, d03, d13])
if amin == 0 or amin == 2: # Orientation of first curve incorrect, fix
p["orientations"][0] = abs(c_ori - 1)
# Fix all orientations
for i in range(len(p["2dcurves"]) - 1):
cur = tr_curves[p["2dcurves"][i]]
nxt = tr_curves[p["2dcurves"][i + 1]]
c_ori = p["orientations"][i]
n_ori = p["orientations"][i + 1]
if c_ori == 0:
pole1 = np.array(cur["poles"][-1])
else:
pole1 = np.array(cur["poles"][0])
if n_ori == 0:
pole2 = np.array(nxt["poles"][0])
pole3 = np.array(nxt["poles"][-1])
else:
pole2 = np.array(nxt["poles"][-1])
pole3 = np.array(nxt["poles"][0])
d12 = np.abs(pole1 - pole2)
d13 = np.abs(pole1 - pole3)
amin = np.min([d12, d13])
if amin == 1: # Incorrect orientation, flip
p["orientations"][i + 1] = abs(n_ori - 1)
features = {
"curves": d1_feats,
"surfaces": d2_feats,
"trim": tr_curves,
"topo": patches,
"bbox": bbox1
}
os.makedirs(res_path, exist_ok=True)
fip = fil + "_features2"
with open("%s/%s_%03i.yml" % (res_path, fip, occ_cnt), "w") as fili:
yaml.dump(features, fili, indent=2)
fip = fil + "_features"
with open("%s/%s_%03i.yml" % (res_path, fip, occ_cnt), "w") as fili:
features2 = copy.deepcopy(features)
for sf in features2["surfaces"]:
del sf["faces"]
del sf["verts"]
yaml.dump(features2, fili, indent=2)
# res_path = folder.replace("/step/", "/stat/")
# fip = fil + "_stats"
# with open("%s/%s_%03i.yml"%(res_path, fip, occ_cnt), "w") as fili:
# yaml.dump(stats, fili, indent=2)
print("Writing results for %s with %i parts." % (model, len(occ_steps)))