def extrusion_to_solid(extrusion, name):
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_Sewing, BRepBuilderAPI_MakeSolid
from OCC.Core.TopoDS import topods
from OCC.Core.BRepGProp import brepgprop_VolumeProperties
from OCC.Core.GProp import GProp_GProps
from OCCUtils.Topology import Topo
d = extrusion_to_ruled_surfaces(extrusion, cap=True)
sew = BRepBuilderAPI_Sewing()
make_solid = BRepBuilderAPI_MakeSolid()
faces = {}
for k in d.keys():
faces[name + '_' + k] = d[k]
sew.Add(d[k].Shape())
sew.Perform()
shell = sew.SewedShape()
make_solid.Add(topods.Shell(shell))
gp = GProp_GProps()
#make_solid.Add(shell)
solid = make_solid.Solid()
brepgprop_VolumeProperties(shell, gp)
print gp.Mass()
return Part(name, faces, solid)
def __init__(self, shape):
if not shape.IsNull():
if not shape.ShapeType() == Shape.SHELL:
raise TypeError('Shape is not a TopoDS_Shell.')
if not isinstance(shape, TopoDS_Shell):
shape = topods.Shell(shape)
super(Shell, self).__init__(shape)
def named_cartesian_box(xmin=-10.,
xmax=10.,
ymin=-10.,
ymax=10.,
zmin=-10.,
zmax=10.):
from youbastard.geometry.Polyline3D import Polyline3D
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_Sewing, BRepBuilderAPI_MakeSolid
from OCC.Core.TopoDS import topods
from OCC.Core.BRepPrimAPI import BRepPrimAPI_MakeBox
p0 = Point((xmin, ymin, zmin))
p1 = Point((xmin, ymax, zmin))
p2 = Point((xmax, ymax, zmin))
p3 = Point((xmax, ymin, zmin))
p4 = Point((xmin, ymin, zmax))
p5 = Point((xmin, ymax, zmax))
p6 = Point((xmax, ymax, zmax))
p7 = Point((xmax, ymin, zmax))
pol_Xmin = Polyline3D([p0, p1, p5, p4, p0][::-1])
pol_Xmax = Polyline3D([p2, p3, p7, p6, p2][::-1])
pol_Ymin = Polyline3D([p1, p2, p6, p5, p1][::-1])
pol_Ymax = Polyline3D([p0, p4, p7, p3, p0][::-1])
pol_Zmin = Polyline3D([p0, p3, p2, p1, p0][::-1])
pol_Zmax = Polyline3D([p5, p6, p7, p4, p5][::-1])
dicoface = {
'Xmin': face_polyline3d(pol_Xmin).Shape(),
'Xmax': face_polyline3d(pol_Xmax).Shape(),
'Ymin': face_polyline3d(pol_Ymin).Shape(),
'Ymax': face_polyline3d(pol_Ymax).Shape(),
'Zmin': face_polyline3d(pol_Zmin).Shape(),
'Zmax': face_polyline3d(pol_Zmax).Shape()
}
sew = BRepBuilderAPI_Sewing()
make_solid = BRepBuilderAPI_MakeSolid()
for k in dicoface.keys():
sew.Add(dicoface[k])
sew.Perform()
shell = sew.SewedShape()
make_solid.Add(topods.Shell(shell))
box = make_solid.Solid()
box = BRepPrimAPI_MakeBox(gp_Pnt(xmin, ymin, zmin),
gp_Pnt(xmax, ymax, zmax))
return box, dicoface
def combine_faces(compshape, sew_tolerance):
"""
Method to combine faces in a shell by adding connectivity and continuity
:param compshape: TopoDS_Shape
:param sew_tolerance: tolerance for sewing
:return: Topo_Shell
"""
offsew = BRepOffsetAPI_FindContigousEdges(sew_tolerance)
sew = BRepBuilderAPI_Sewing(sew_tolerance)
face_explorers = TopExp_Explorer(compshape, TopAbs_FACE)
n_faces = 0
# cycle on Faces
while face_explorers.More():
tface = topods.Face(face_explorers.Current())
sew.Add(tface)
offsew.Add(tface)
n_faces += 1
face_explorers.Next()
offsew.Perform()
offsew.Dump()
sew.Perform()
shell = sew.SewedShape()
sew.Dump()
shell = topods.Shell(shell)
shell_fixer = ShapeFix_Shell()
shell_fixer.FixFaceOrientation(shell)
"""
if shell_fixer.Perform():
print("{} shells fixed! ".format(shell_fixer.NbShells()))
else:
print "Shells not fixed! "
new_shell = shell_fixer.Shell()
if brepalgo_IsValid(new_shell):
print "Shell valid! "
else:
print "Shell failed! "
"""
return new_shell
def reconstruct_object(array):
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_Sewing, BRepBuilderAPI_MakeSolid
from OCC.Core.BRepGProp import brepgprop_VolumeProperties
from OCC.Core.GProp import GProp_GProps
from OCC.Core.TopoDS import topods
obj = BRepBuilderAPI_Sewing()
for i, si in enumerate(array):
obj.Add(si)
obj.Perform()
shell = obj.SewedShape()
make_solid = BRepBuilderAPI_MakeSolid()
make_solid.Add(topods.Shell(shell))
gp = GProp_GProps()
#make_solid.Add(shell)
solid = make_solid.Solid()
brepgprop_VolumeProperties(shell, gp)
print 'RECONSTRUCTED SOLID VOLUME :'
print gp.Mass()
return solid
def Shell(self): return topods.Shell(self._shp) def Solid(self): return topods.Solid(self._shp)
def MakeSolidFromShell(shell):
ms = BRepBuilderAPI_MakeSolid()
ms.Add(topods.Shell(shell))
solid = ms.Solid()
return solid
def parse_shape(self, filename):
"""
Method to parse a Shape with multiple objects (1 compound = multi-shells
and 1 shell = multi-faces)
It returns a list of matrix with all the coordinates of control points
of each Face and a second list with all the control points related to
Edges of each Face.
:param str filename: the input filename.
:return: list of (mesh_points: `n_points`-by-3 matrix containing
the coordinates of the control points of the Face (surface),
edge_points: it is a list of numpy.narray)
:rtype: a list of shells
"""
self.infile = filename
self.shape = self.load_shape_from_file(filename)
self.check_topology()
# parse and get control points
l_shells = [] # an empty list of shells
n_shells = 0
if self.check_topo == 0:
shells_explorer = TopExp_Explorer(self.shape, TopAbs_SHELL)
# cycle on shells
while shells_explorer.More():
topo_shell = topods.Shell(shells_explorer.Current())
shell_faces_explorer = TopExp_Explorer(topo_shell, TopAbs_FACE)
l_faces = [] # an empty list of faces per shell
# cycle on faces
while shell_faces_explorer.More():
topo_face = topods.Face(shell_faces_explorer.Current())
mesh_point, edge_point = self.parse_face(topo_face)
l_faces.append((mesh_point, edge_point))
shell_faces_explorer.Next()
l_shells.append(l_faces)
n_shells += 1
shells_explorer.Next()
else:
# cycle only on faces
shell_faces_explorer = TopExp_Explorer(self.shape, TopAbs_FACE)
l_faces = [] # an empty list of faces per shell
while shell_faces_explorer.More():
topo_face = topods.Face(shell_faces_explorer.Current())
mesh_point, edge_point = self.parse_face(topo_face)
l_faces.append((mesh_point, edge_point))
shell_faces_explorer.Next()
l_shells.append(l_faces)
n_shells += 1
return l_shells
def getShape(self, pos, rotation) :
import cadquery as cq
#from OCC.Core.gp import gp_Ax2, gp_Pnt, gp_Dir
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakePolygon
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_MakeSolid
from OCC.Core.BRepBuilderAPI import BRepBuilderAPI_Sewing
from OCC.Core.BRepAlgoAPI import BRepAlgoAPI_Cut
from OCC.Core.TopoDS import topods
print("Get Shape gPolyhedra")
x = pos[0]
y = pos[1]
z = pos[2]
sewing = BRepBuilderAPI_Sewing()
# Add top polygon
print('top polygon')
top = regPolygon(self.Num, self.Zplanes[0][1], \
self.Zplanes[0][2])
maxR = self.Zplanes[0][1]
height = self.Zplanes[0][2]
sewing.Add(makeFace(top))
n = len(self.Zplanes)
for i in range(1,n) :
bot = regPolygon(self.Num, self.Zplanes[i][1], \
self.Zplanes[i][2])
if self.Zplanes[i][1] > maxR :
maxR = self.Zplanes[i][1]
height = height + self.Zplanes[i][2]
for i in range(0, self.Num) :
face = makeFace([top[i],top[i+1],bot[i+1],bot[i]])
sewing.Add(face)
top = bot
# Add bottom polygon
print('bottom polygon')
sewing.Add(makeFace(bot))
sewing.Perform()
sewedShape = sewing.SewedShape()
outer = BRepBuilderAPI_MakeSolid(topods.Shell(sewedShape))
sewing = BRepBuilderAPI_Sewing()
# Add top polygon
print('top polygon')
top = regPolygon(self.Num, self.Zplanes[0][0], \
self.Zplanes[0][2])
sewing.Add(makeFace(top))
n = len(self.Zplanes)
for i in range(1,n) :
bot = regPolygon(self.Num, self.Zplanes[i][0], \
self.Zplanes[i][2])
for i in range(0, self.Num) :
face = makeFace([top[i],top[i+1],bot[i+1],bot[i]])
sewing.Add(face)
top = bot
# Add bottom polygon
print('bottom polygon')
sewing.Add(makeFace(bot))
sewing.Perform()
sewedShape = sewing.SewedShape()
inner = BRepBuilderAPI_MakeSolid(topods.Shell(sewedShape))
poly = BRepAlgoAPI_Cut(outer.Shape(), inner.Shape()).Shape()
if self.Sector.completeRev() == False :
print("Need to section")
if self.Sector.less90() == True :
print("Common")
shape = self.Sector.makeCommon(maxR, height, poly)
else :
print("Cut")
shape = self.Sector.makeCut(maxR, height, poly)
if self.Sector.getStart() == 0 :
return shape
else :
return self.Sector.rotate(shape)
return poly.Shape()
