def coords_from_vert(vert_shape):
"""
Return tuple representing coordinates of one vertex
"""
brt = BRep_Tool()
pnt = brt.Pnt(topods_Vertex(vert_shape))
return (pnt.X(), pnt.Y(), pnt.Z())
def topo2topotype(occtopology):
"""
This function converts the original OCCtopology of the given topology. e.g. an OCCcompound that is originally an OCCface etc.
Parameters
----------
occtopology : OCCtopology
The OCCtopology to be converted.
OCCtopology includes: OCCshape, OCCcompound, OCCcompsolid, OCCsolid, OCCshell, OCCface, OCCwire, OCCedge, OCCvertex
Returns
-------
original topology : OCCtopology
The original OCCtopology of the input.
"""
shapetype = occtopology.ShapeType()
if shapetype == TopAbs_COMPOUND:#compound
orig_topo = topods_Compound(occtopology)
if shapetype == TopAbs_COMPSOLID:#compsolid
orig_topo = topods_CompSolid(occtopology)
if shapetype == TopAbs_SOLID:#solid
orig_topo = topods_Solid(occtopology)
if shapetype == TopAbs_SHELL:#shell
orig_topo = topods_Shell(occtopology)
if shapetype == TopAbs_FACE:#face
orig_topo = topods_Face(occtopology)
if shapetype == TopAbs_WIRE:#wire
orig_topo = topods_Wire(occtopology)
if shapetype == TopAbs_EDGE:#edge
orig_topo = topods_Edge(occtopology)
if shapetype == TopAbs_VERTEX:#vertex
orig_topo = topods_Vertex(occtopology)
return orig_topo
def format_wire_for_roboDK(wire, is_reverse=False):
vertices = sweeper.get_ordered_vertices_from_wire(wire)
brt = BRep_Tool()
wire = []
last_path_direction = None
for i in range(len(vertices)):
index = i
next_index = index + 1
if is_reverse:
index = len(vertices) - 1 - i
next_index = index - 1
v = vertices[index]
pnt = brt.Pnt(topods_Vertex(v))
normal = get_vertex_normal(v, front_face)
if not ((index == 0 and is_reverse) or
(index == len(vertices) - 1 and not is_reverse)):
pnt_next = brt.Pnt(topods_Vertex(vertices[next_index]))
mat_pnt = numpy.mat([pnt.X(), pnt.Y(), pnt.Z()])
mat_pnt_next = numpy.mat(
[pnt_next.X(), pnt_next.Y(),
pnt_next.Z()])
path_direction = mat_pnt_next - mat_pnt
path_direction = path_direction / scipy.linalg.norm(path_direction)
last_path_direction = path_direction
else:
path_direction = last_path_direction
#direction should be away from base_position
p1 = [pnt.X() + normal.X(), pnt.Y() + normal.Y(), pnt.Z() + normal.Z()]
p2 = [pnt.X() - normal.X(), pnt.Y() - normal.Y(), pnt.Z() - normal.Z()]
#normal vector should point towards base_position
if sweeper.get_distance_points(
p1, sweeper.base_position) < sweeper.get_distance_points(
p2, sweeper.base_position):
direction = [normal.X(), normal.Y(), normal.Z()]
else:
direction = [-normal.X(), -normal.Y(), -normal.Z()]
wire.append({
"location": [pnt.X(), pnt.Y(), pnt.Z()],
"direction":
direction,
"path_direction": [
path_direction.item(0),
path_direction.item(1),
path_direction.item(2)
]
})
return wire
def topo_explorer(occtopo2explore, topotype2find):
"""
This function explores and fetches the specified topological type from the given OCCtopology.
e.g. find a list of OCCfaces in an OCCcompound.
Parameters
----------
occtopo2explore : OCCtopology
The OCCtopology to be explored.
OCCtopology includes: OCCshape, OCCcompound, OCCcompsolid, OCCsolid, OCCshell, OCCface, OCCwire, OCCedge, OCCvertex
topotype2find : str
The string describing the topology to find.
The strings can be e.g. "compound", "compsolid", "solid", "shell", "face", "wire", "edge", "vertex".
Returns
-------
list of topology : list of OCCtopology
The list of OCCtopology found in the specified OCCtopology.
"""
geom_list = []
if topotype2find == "compound":
shapetype2find_topABS = TopAbs_COMPOUND
if topotype2find == "compsolid":
shapetype2find_topABS = TopAbs_COMPSOLID
if topotype2find == "solid":
shapetype2find_topABS = TopAbs_SOLID
if topotype2find == "shell":
shapetype2find_topABS = TopAbs_SHELL
if topotype2find == "face":
shapetype2find_topABS = TopAbs_FACE
if topotype2find == "wire":
shapetype2find_topABS = TopAbs_WIRE
if topotype2find == "edge":
shapetype2find_topABS = TopAbs_EDGE
if topotype2find == "vertex":
shapetype2find_topABS = TopAbs_VERTEX
ex = TopExp_Explorer(occtopo2explore, shapetype2find_topABS)
while ex.More():
if shapetype2find_topABS == 0:
geom = topods_Compound(ex.Current())
if shapetype2find_topABS == 1:
geom = topods_CompSolid(ex.Current())
if shapetype2find_topABS == 2:
geom = topods_Solid(ex.Current())
if shapetype2find_topABS == 3:
geom = topods_Shell(ex.Current())
if shapetype2find_topABS == 4:
geom = topods_Face(ex.Current())
if shapetype2find_topABS == 5:
geom = topods_Wire(ex.Current())
if shapetype2find_topABS == 6:
geom = topods_Edge(ex.Current())
if shapetype2find_topABS == 7:
geom = topods_Vertex(ex.Current())
geom_list.append(geom)
ex.Next()
return geom_list
def points_of_face(face_shape):
"""
Return sorted tuple of face points
"""
face_traverse = traverse.Topo(face_shape)
vertices = face_traverse.vertices_from_face(face_shape)
points = []
brt = BRep_Tool()
for vert in vertices:
pnt = brt.Pnt(topods_Vertex(vert))
points.append((pnt.X(), pnt.Y(), pnt.Z()))
return tuple(sorted(points))
def vertex_clicked(shp, *kwargs):
""" This function is called whenever a vertex is selected
"""
for shape in shp: # this should be a TopoDS_Vertex
print("Face selected: ", shape)
v = topods_Vertex(shape)
pnt = BRep_Tool.Pnt(v)
print("3d gp_Pnt selected coordinates : X=", pnt.X(), "Y=", pnt.Y(),
"Z=", pnt.Z())
# then convert to screen coordinates
screen_coord = display.View.Convert(pnt.X(), pnt.Y(), pnt.Z())
print("2d screen coordinates : ", screen_coord)
def __init__(self, pnt):
if isinstance(pnt, (list, tuple)):
gp_Pnt.__init__(self, *pnt)
elif isinstance(pnt, vec):
gp_Pnt.__init__(self, *pnt)
elif isinstance(pnt, gp_Pnt):
gp_Pnt.__init__(self, pnt)
elif isinstance(pnt, TopoDS_Vertex):
# convert to type "gp_Pnt"
gp_Pnt.__init__(self, BRep_Tool.Pnt(pnt))
elif isinstance(pnt, TopoDS_Shape):
self.brt = BRep_Tool()
self.pnt1 = self.brt.Pnt(topods_Vertex(pnt))
gp_Pnt.__init__(self, self.pnt1.XYZ())
else:
raise TypeError
def dumpTopology(shape, level=0):
"""
Print the details of an object from the top down
"""
brt = BRep_Tool()
s = shape.ShapeType()
if s == TopAbs_VERTEX:
pnt = brt.Pnt(topods_Vertex(shape))
print(".." * level + "<Vertex %i: %s %s %s>" % (hash(shape), pnt.X(), pnt.Y(), pnt.Z()))
else:
print(".." * level, end="")
print(shapeTypeString(shape))
it = TopoDS_Iterator(shape)
while it.More():
shp = it.Value()
it.Next()
dumpTopology(shp, level + 1)
def dumpTopology(shape, level=0):
"""
Print the details of an object from the top down
"""
brt = BRep_Tool()
s = shape.ShapeType()
if s == TopAbs_VERTEX:
pnt = brt.Pnt(topods_Vertex(shape))
print(".." * level + "<Vertex %i: %s %s %s>" % (hash(shape), pnt.X(), pnt.Y(), pnt.Z()))
else:
print(".." * level, end="")
print(shapeTypeString(shape))
it = TopoDS_Iterator(shape)
while it.More():
shp = it.Value()
it.Next()
dumpTopology(shp, level + 1)
def dump_topology_to_string(shape, level=0, buffer=""):
"""
Reutnrs the details of an object from the top down
"""
brt = BRep_Tool()
s = shape.ShapeType()
if s == TopAbs_VERTEX:
pnt = brt.Pnt(topods_Vertex(shape))
print(".." * level + "<Vertex %i: %s %s %s>\n" %
(hash(shape), pnt.X(), pnt.Y(), pnt.Z()))
else:
print(".." * level, end="")
print(shape_type_string(shape))
it = TopoDS_Iterator(shape)
while it.More() and level < 5: # LEVEL MAX
shp = it.Value()
it.Next()
print(dump_topology_to_string(shp, level + 1, buffer))
def shape2shapetype(occ_shape):
shapetype = occ_shape.ShapeType()
if shapetype == TopAbs_COMPOUND: #compound
orig_topo = topods_Compound(occ_shape)
if shapetype == TopAbs_COMPSOLID: #compsolid
orig_topo = topods_CompSolid(occ_shape)
if shapetype == TopAbs_SOLID: #solid
orig_topo = topods_Solid(occ_shape)
if shapetype == TopAbs_SHELL: #shell
orig_topo = topods_Shell(occ_shape)
if shapetype == TopAbs_FACE: #face
orig_topo = topods_Face(occ_shape)
if shapetype == TopAbs_WIRE: #wire
orig_topo = topods_Wire(occ_shape)
if shapetype == TopAbs_EDGE: #edge
orig_topo = topods_Edge(occ_shape)
if shapetype == TopAbs_VERTEX: #vertex
orig_topo = topods_Vertex(occ_shape)
return orig_topo
def test_update_ApexPoint():
"""Tests that Build is triggered on updating Apex Point"""
# Create example airliner wing
P = (0, 0, 0)
wing = LiftingSurface(P, mySweepAngleFunctionAirliner,
myDihedralFunctionAirliner,
myTwistFunctionAirliner,
myChordFunctionAirliner,
myAirfoilFunctionAirliner)
# By adding a point to the wing, we will see if the move transformation
# has been performed when the ApexPoint attribute is changed:
from OCC.BRepBuilderAPI import BRepBuilderAPI_MakeVertex
v = BRepBuilderAPI_MakeVertex(gp_Pnt(0, 0, 0)).Vertex()
wing['test_pnt'] = v
# Updating the apex should move the surface (and test vertex) through
# the vector newApex - oldApex
wing.ApexPoint = gp_Pnt(10, 10, 10)
# Retrieve the vertex and point from the translated shape
from OCC.TopoDS import topods_Vertex
from OCC.BRep import BRep_Tool_Pnt
vout = topods_Vertex(wing['test_pnt'])
p = BRep_Tool_Pnt(vout)
# Check that the vertex was correctly transformed
xyz = [p.X(), p.Y(), p.Z()]
assert(xyz == [10, 10, 10])
# def test_Fit_BlendedTipDevice(simple_wing):
# # Fit a blended winglet to this wing and test the output
# wing = simple_wing
# wing.Fit_BlendedTipDevice(rootchord_norm=0.8, spanfraction=0.1, cant=40,
# transition=0.1, sweep=40, taper=0.7)
# # Test the (theoretical) tip chord equals the winglet root chord:
# assert((Wing.ChordFunct(1) * Wing.ScaleFactor * Wing.ChordFactor) ==
# Winglet.ChordFunct(0) * Winglet.ScaleFactor * Winglet.ChordFactor)
# # Test the length of the LE curve is the correct spanfraction
def test_update_ApexPoint():
"""Tests that Build is triggered on updating Apex Point"""
# Create example airliner wing
P = (0, 0, 0)
wing = LiftingSurface(P, mySweepAngleFunctionAirliner,
myDihedralFunctionAirliner, myTwistFunctionAirliner,
myChordFunctionAirliner, myAirfoilFunctionAirliner)
# By adding a point to the wing, we will see if the move transformation
# has been performed when the ApexPoint attribute is changed:
from OCC.BRepBuilderAPI import BRepBuilderAPI_MakeVertex
v = BRepBuilderAPI_MakeVertex(gp_Pnt(0, 0, 0)).Vertex()
wing['test_pnt'] = v
# Updating the apex should move the surface (and test vertex) through
# the vector newApex - oldApex
wing.ApexPoint = gp_Pnt(10, 10, 10)
# Retrieve the vertex and point from the translated shape
from OCC.TopoDS import topods_Vertex
from OCC.BRep import BRep_Tool_Pnt
vout = topods_Vertex(wing['test_pnt'])
p = BRep_Tool_Pnt(vout)
# Check that the vertex was correctly transformed
xyz = [p.X(), p.Y(), p.Z()]
assert (xyz == [10, 10, 10])
# def test_Fit_BlendedTipDevice(simple_wing):
# # Fit a blended winglet to this wing and test the output
# wing = simple_wing
# wing.Fit_BlendedTipDevice(rootchord_norm=0.8, spanfraction=0.1, cant=40,
# transition=0.1, sweep=40, taper=0.7)
# # Test the (theoretical) tip chord equals the winglet root chord:
# assert((Wing.ChordFunct(1) * Wing.ScaleFactor * Wing.ChordFactor) ==
# Winglet.ChordFunct(0) * Winglet.ScaleFactor * Winglet.ChordFactor)
# # Test the length of the LE curve is the correct spanfraction
def DumpTop(self, shape, level=0):
"""
Print the details of an object from the top down
"""
brt = BRep_Tool()
s = shape.ShapeType()
if s == TopAbs_VERTEX:
pnt = brt.Pnt(topods_Vertex(shape))
dmp = " " * level
dmp += "%s - " % shapeTypeString(shape)
dmp += "%.5e %.5e %.5e" % (pnt.X(), pnt.Y(), pnt.Z())
print(dmp)
else:
dmp = " " * level
dmp += shapeTypeString(shape)
print(dmp)
it = TopoDS_Iterator(shape)
while it.More():
shp = it.Value()
it.Next()
self.DumpTop(shp, level + 1)
def corners(house):
d = {}
iface = -1
topo = Topo(house['volume'])
house['boundaries'] = {'walls': [], 'windows': [], 'heats': []}
house['faces'] = []
for f in topo.wires():
iface += 1
key = 'face' + str(iface)
print 'new_face'
edges = []
d[key] = []
topof = Topo(f)
for e in topof.edges():
vts = Topo(e)
print 'edge'
edge = []
for i, v in enumerate(vts.vertices()):
brt = BRep_Tool()
pnt = brt.Pnt(topods_Vertex(v))
edge.append([pnt.X(), pnt.Y(), pnt.Z()])
edges.append(edge)
print len(edges)
first_edge = edges.pop(0)
point_array = [first_edge[0], first_edge[1]]
print 'edges :'
for e in edges:
print e
print '-------'
while len(edges) > 0:
for i, e in enumerate(edges):
if point_array[-1] in e:
ed = edges.pop(i)
print point_array[-1]
if ed[0] == point_array[-1]: point_array.append(ed[1])
elif ed[1] == point_array[-1]: point_array.append(ed[0])
break
d[key] = point_array
house['faces'].append(point_array)
return d
def geom_explorer(geom2explore, shapetype2find):
geom_list = []
if shapetype2find == "compound":
shapetype2find_topABS = TopAbs_COMPOUND
if shapetype2find == "compsolid":
shapetype2find_topABS = TopAbs_COMPSOLID
if shapetype2find == "solid":
shapetype2find_topABS = TopAbs_SOLID
if shapetype2find == "shell":
shapetype2find_topABS = TopAbs_SHELL
if shapetype2find == "face":
shapetype2find_topABS = TopAbs_FACE
if shapetype2find == "wire":
shapetype2find_topABS = TopAbs_WIRE
if shapetype2find == "edge":
shapetype2find_topABS = TopAbs_EDGE
if shapetype2find == "vertex":
shapetype2find_topABS = TopAbs_VERTEX
ex = TopExp_Explorer(geom2explore, shapetype2find_topABS)
while ex.More():
if shapetype2find_topABS == 0:
geom = topods_Compound(ex.Current())
if shapetype2find_topABS == 1:
geom = topods_CompSolid(ex.Current())
if shapetype2find_topABS == 2:
geom = topods_Solid(ex.Current())
if shapetype2find_topABS == 3:
geom = topods_Shell(ex.Current())
if shapetype2find_topABS == 4:
geom = topods_Face(ex.Current())
if shapetype2find_topABS == 5:
geom = topods_Wire(ex.Current())
if shapetype2find_topABS == 6:
geom = topods_Edge(ex.Current())
if shapetype2find_topABS == 7:
geom = topods_Vertex(ex.Current())
geom_list.append(geom)
ex.Next()
return geom_list
#!/usr/bin/env python ##Copyright 2008-2015 Jelle Feringa ([email protected]) ## ##This file is part of pythonOCC. ## ##pythonOCC is free software: you can redistribute it and/or modify ##it under the terms of the GNU Lesser General Public License as published by ##the Free Software Foundation, either version 3 of the License, or ##(at your option) any later version. ## ##pythonOCC 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 Lesser General Public License for more details. ## ##You should have received a copy of the GNU Lesser General Public License ##along with pythonOCC. If not, see <http://www.gnu.org/licenses/>. # A sample that shows how to generate the gear geometry according # to knowledge from OCC.BRepFilletAPI import BRepFilletAPI_MakeFillet from OCC.BRep import BRep_Tool from OCC.BRepPrimAPI import BRepPrimAPI_MakeBox from OCC.TopExp import (TopExp_Explorer, topexp_MapShapesAndAncestors, topexp_FirstVertex, topexp_LastVertex) from OCC.TopAbs import TopAbs_VERTEX, TopAbs_EDGE from OCC.TopTools import (TopTools_IndexedDataMapOfShapeListOfShape, TopTools_ListIteratorOfListOfShape) from OCC.TopoDS import topods_Vertex, topods_Edge
#!/usr/bin/env python ##Copyright 2008-2015 Jelle Feringa ([email protected]) ## ##This file is part of pythonOCC. ## ##pythonOCC is free software: you can redistribute it and/or modify ##it under the terms of the GNU Lesser General Public License as published by ##the Free Software Foundation, either version 3 of the License, or ##(at your option) any later version. ## ##pythonOCC 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 Lesser General Public License for more details. ## ##You should have received a copy of the GNU Lesser General Public License ##along with pythonOCC. If not, see <http://www.gnu.org/licenses/>. # A sample that shows how to generate the gear geometry according # to knowledge from OCC.BRepFilletAPI import BRepFilletAPI_MakeFillet from OCC.BRep import BRep_Tool from OCC.BRepPrimAPI import BRepPrimAPI_MakeBox from OCC.TopExp import (TopExp_Explorer, topexp_MapShapesAndAncestors, topexp_FirstVertex, topexp_LastVertex) from OCC.TopAbs import TopAbs_VERTEX, TopAbs_EDGE from OCC.TopTools import (TopTools_IndexedDataMapOfShapeListOfShape, TopTools_ListIteratorOfListOfShape) from OCC.TopoDS import topods_Vertex, topods_Edge from OCC.Display.SimpleGui import init_display display, start_display, add_menu, add_function_to_menu = init_display()
def find_intersected_faces(face, volume1, volume2, hint_face, tolerance=0.00001):
"""
Try to find bordering faces
"""
# Get bordering points from face
primitives0 = brep_explorer.shape_disassembly(face)
brt = BRep_Tool()
border_points = []
for vert_shape in primitives0[7].values():
vert = topods_Vertex(vert_shape)
pnt = brt.Pnt(topods_Vertex(vert))
border_points.append(pnt)
# Get curves from edges of face
brt = BRep_Tool()
curves = []
for edge_shape in primitives0[6].values():
edge = topods_Edge(edge_shape)
curve_handle = brt.Curve(edge)[0]
curve = curve_handle.GetObject()
curves.append(curve)
# Get candidate points from hint_face
primitives2 = brep_explorer.shape_disassembly(hint_face)
brt = BRep_Tool()
cand_points = []
for vert_shape in primitives2[7].values():
vert = topods_Vertex(vert_shape)
pnt = brt.Pnt(topods_Vertex(vert))
cand_points.append(pnt)
# Iterate over all curves and try to find intersection points
inter_points = []
for curve in curves:
distances = {}
# Compute distances between candidate points and curve
for point in cand_points:
proj = GeomAPI_ProjectPointOnCurve(point, curve.GetHandle())
try:
low_dist = proj.LowerDistance()
# I tried to find, where does this exception come from: "StdFail_NotDone"
# but was not able to find it anywhere. So using this wild catching
except:
pass
else:
distances[low_dist] = point
# Try to get candidate with lowest distance
if len(distances) > 0:
min_dist = min(distances.keys())
# When distance is lower then tolerance, then we found point at intersection
if min_dist <= tolerance:
inter_points.append(distances[min_dist])
if len(inter_points) == 0:
return []
# When some intersection points was found, then extend list of border points
# with these intersection points
border_points.extend(inter_points)
border_coords = [(pnt.X(), pnt.Y(), pnt.Z()) for pnt in border_points]
# Get list of all faces in volumes
primitives3 = brep_explorer.shapes_disassembly((volume1, volume2))
brt = BRep_Tool()
border_faces = []
for face_shape in primitives3[4].values():
face_traverse = traverse.Topo(face_shape)
vertices = face_traverse.vertices_from_face(face_shape)
face_coords = []
for vert in vertices:
pnt = brt.Pnt(topods_Vertex(vert))
face_coords.append((pnt.X(), pnt.Y(), pnt.Z()))
# TODO: use better check in coordinates matches then: `coo in border_coords`
# e.g.: use some distance and tolerance
res = [coo in border_coords for coo in face_coords]
if all(res) is True:
border_faces.append(face_shape)
# TODO: Check if these faces covers original face completely
return border_faces
def shape_to_pts(sh):
return [BRep_Tool().Pnt(topods_Vertex(v)) for v in Topo(sh).vertices()]
topexp_FirstVertex, topexp_LastVertex)
from OCC.TopAbs import TopAbs_VERTEX, TopAbs_EDGE
from OCC.TopTools import (TopTools_IndexedDataMapOfShapeListOfShape,
TopTools_ListIteratorOfListOfShape)
from OCC.TopoDS import topods_Vertex, topods_Edge
from OCC.Display.SimpleGui import init_display
display, start_display, add_menu, add_function_to_menu = init_display('wx')
# create shape
cube = BRepPrimAPI_MakeBox(100, 100, 100).Shape()
topExp = TopExp_Explorer()
topExp.Init(cube, TopAbs_VERTEX)
# get two vertices
vertA = topods_Vertex(topExp.Current())
topExp.Next()
vertB = topods_Vertex(topExp.Current())
def vertex_fillet(cube, vert):
# apply a fillet on incident edges on a vertex
afillet = BRepFilletAPI_MakeFillet(cube)
cnt = 0
# find edges from vertex
_map = TopTools_IndexedDataMapOfShapeListOfShape()
topexp_MapShapesAndAncestors(cube, TopAbs_VERTEX, TopAbs_EDGE, _map)
results = _map.FindFromKey(vert)
topology_iterator = TopTools_ListIteratorOfListOfShape(results)
while topology_iterator.More():
edge = topods_Edge(topology_iterator.Value())
