def __init__(self, shaft, blade, n_blades):
self.shaft_solid = shaft.generate_solid()
blade.apply_transformations(reflect=True)
blade_solid = blade.generate_solid(max_deg=2,
display=False,
errors=None)
blades = []
blades.append(blade_solid)
for i in range(n_blades-1):
blade.rotate(rad_angle=1.0*2.0*np.pi/float(n_blades))
blade_solid = blade.generate_solid(max_deg=2, display=False, errors=None)
blades.append(blade_solid)
blades_combined = blades[0]
for i in range(len(blades)-1):
boolean_union = BRepAlgoAPI_Fuse(blades_combined, blades[i+1])
boolean_union.Build()
if not boolean_union.IsDone():
raise RuntimeError('Unsuccessful assembling of blade')
blades_combined = boolean_union.Shape()
boolean_union = BRepAlgoAPI_Fuse(self.shaft_solid, blades_combined)
boolean_union.Build()
result_compound = boolean_union.Shape()
sewer = BRepBuilderAPI_Sewing(1e-2)
sewer.Add(result_compound)
sewer.Perform()
self.sewed_full_body = sewer.SewedShape()
def fillet(event=None):
Box = BRepPrimAPI_MakeBox(gp_Pnt(-400, 0, 0), 200, 230, 180).Shape()
fillet_ = BRepFilletAPI_MakeFillet(Box)
# Add fillet on each edge
for e in TopologyExplorer(Box).edges():
fillet_.Add(20, e)
blendedBox = fillet_.Shape()
P1 = gp_Pnt(250, 150, 75)
S1 = BRepPrimAPI_MakeBox(300, 200, 200).Shape()
S2 = BRepPrimAPI_MakeBox(P1, 120, 180, 70).Shape()
Fuse = BRepAlgoAPI_Fuse(S1, S2)
FusedShape = Fuse.Shape()
fill = BRepFilletAPI_MakeFillet(FusedShape)
for e in TopologyExplorer(FusedShape).edges():
fill.Add(e)
for i in range(1, fill.NbContours() + 1):
length = fill.Length(i)
Rad = 0.15 * length
fill.SetRadius(Rad, i, 1)
blendedFusedSolids = fill.Shape()
display.EraseAll()
display.DisplayShape(blendedBox)
display.DisplayShape(blendedFusedSolids)
display.FitAll()
def boolean_fuse(shapeToCutFrom, joiningShape):
from OCC.Core.BRepAlgoAPI import BRepAlgoAPI_Fuse
join = BRepAlgoAPI_Fuse(shapeToCutFrom, joiningShape)
join.RefineEdges()
join.FuseEdges()
shape = join.Shape()
join.Destroy()
return shape
def boolean_union(array):
first = array[0]
if len(array) > 1:
for i in range(1, len(array)):
other = array[i]
fuse = BRepAlgoAPI_Fuse(first, other)
first = fuse.Shape()
return [first]
def from_boolean_union(cls, A, B) -> 'BRep':
"""Construct a BRep from the boolean union of two other BReps.
Parameters
----------
A : :class:`~compas_occ.brep.BRep`
B : :class:`~compas_occ.brep.BRep`
Returns
-------
:class:`~compas_occ.brep.BRep`
"""
fuse = BRepAlgoAPI_Fuse(A.shape, B.shape)
if not fuse.IsDone():
raise Exception("Boolean union operation could not be completed.")
brep = BRep()
brep.shape = fuse.Shape()
return brep
def brep_feat_extrusion_protrusion(event=None):
# Extrusion
S = BRepPrimAPI_MakeBox(400., 250., 300.).Shape()
faces = TopologyExplorer(S).faces()
F = next(faces)
surf1 = BRep_Tool_Surface(F)
Pl1 = Geom_Plane.DownCast(surf1)
D1 = Pl1.Pln().Axis().Direction().Reversed()
MW = BRepBuilderAPI_MakeWire()
p1, p2 = gp_Pnt2d(200., -100.), gp_Pnt2d(100., -100.)
aline = GCE2d_MakeLine(p1, p2).Value()
MW.Add(BRepBuilderAPI_MakeEdge(aline, surf1, 0., p1.Distance(p2)).Edge())
p1, p2 = gp_Pnt2d(100., -100.), gp_Pnt2d(100., -200.)
aline = GCE2d_MakeLine(p1, p2).Value()
MW.Add(BRepBuilderAPI_MakeEdge(aline, surf1, 0., p1.Distance(p2)).Edge())
p1, p2 = gp_Pnt2d(100., -200.), gp_Pnt2d(200., -200.)
aline = GCE2d_MakeLine(p1, p2).Value()
MW.Add(BRepBuilderAPI_MakeEdge(aline, surf1, 0., p1.Distance(p2)).Edge())
p1, p2 = gp_Pnt2d(200., -200.), gp_Pnt2d(200., -100.)
aline = GCE2d_MakeLine(p1, p2).Value()
MW.Add(BRepBuilderAPI_MakeEdge(aline, surf1, 0., p1.Distance(p2)).Edge())
MKF = BRepBuilderAPI_MakeFace()
MKF.Init(surf1, False, 1e-6)
MKF.Add(MW.Wire())
FP = MKF.Face()
breplib_BuildCurves3d(FP)
display.EraseAll()
MKP = BRepFeat_MakePrism(S, FP, F, D1, 0, True)
MKP.PerformThruAll()
res1 = MKP.Shape()
display.DisplayShape(res1)
# Protrusion
next(faces)
F2 = next(faces)
surf2 = BRep_Tool_Surface(F2)
Pl2 = Geom_Plane.DownCast(surf2)
D2 = Pl2.Pln().Axis().Direction().Reversed()
MW2 = BRepBuilderAPI_MakeWire()
p1, p2 = gp_Pnt2d(100., 100.), gp_Pnt2d(200., 100.)
aline = GCE2d_MakeLine(p1, p2).Value()
MW2.Add(BRepBuilderAPI_MakeEdge(aline, surf2, 0., p1.Distance(p2)).Edge())
p1, p2 = gp_Pnt2d(200., 100.), gp_Pnt2d(150., 200.)
aline = GCE2d_MakeLine(p1, p2).Value()
MW2.Add(BRepBuilderAPI_MakeEdge(aline, surf2, 0., p1.Distance(p2)).Edge())
p1, p2 = gp_Pnt2d(150., 200.), gp_Pnt2d(100., 100.)
aline = GCE2d_MakeLine(p1, p2).Value()
MW2.Add(BRepBuilderAPI_MakeEdge(aline, surf2, 0., p1.Distance(p2)).Edge())
MKF2 = BRepBuilderAPI_MakeFace()
MKF2.Init(surf2, False, 1e-6)
MKF2.Add(MW2.Wire())
MKF2.Build()
FP = MKF2.Face()
breplib_BuildCurves3d(FP)
MKP2 = BRepFeat_MakePrism(res1, FP, F2, D2, 0, True)
MKP2.PerformThruAll()
display.EraseAll()
trf = gp_Trsf()
trf.SetTranslation(gp_Vec(0, 0, 300))
gtrf = gp_GTrsf()
gtrf.SetTrsf(trf)
tr = BRepBuilderAPI_GTransform(MKP2.Shape(), gtrf, True)
fused = BRepAlgoAPI_Fuse(tr.Shape(), MKP2.Shape())
fused.Build()
display.DisplayShape(fused.Shape())
display.FitAll()
neckLocation = gp_Pnt(0, 0, height)
neckAxis = gp_DZ()
neckAx2 = gp_Ax2(neckLocation, neckAxis)
myNeckRadius = thickness / 4.0
myNeckHeight = height / 10.0
mkCylinder = BRepPrimAPI_MakeCylinder(neckAx2, myNeckRadius, myNeckHeight)
myBody_step2 = BRepAlgoAPI_Fuse(mkFillet.Shape(), mkCylinder.Shape())
# Our goal is to find the highest Z face and remove it
zMax = -1.
# We have to work our way through all the faces to find the highest Z face so we can remove it for the shell
aFaceExplorer = TopExp_Explorer(myBody_step2.Shape(), TopAbs_FACE)
while aFaceExplorer.More():
aFace = topods.Face(aFaceExplorer.Current())
if face_is_plane(aFace):
aPlane = geom_plane_from_face(aFace)
# We want the highest Z face, so compare this to the previous faces
aPntLoc = aPlane.Location()
aZ = aPntLoc.Z()
if aZ > zMax:
zMax = aZ
aFaceExplorer.Next()
facesToRemove = TopTools_ListOfShape()
facesToRemove.Append(aFace)
neckLocation = gp_Pnt(0, 0, height)
neckAxis = gp_DZ()
neckAx2 = gp_Ax2(neckLocation, neckAxis)
myNeckRadius = thickness / 4.0
myNeckHeight = height / 10.0
mkCylinder = BRepPrimAPI_MakeCylinder(neckAx2, myNeckRadius, myNeckHeight)
myBody_step2 = BRepAlgoAPI_Fuse(mkFillet.Shape(), mkCylinder.Shape())
# Our goal is to find the highest Z face and remove it
zMax = -1.
# We have to work our way through all the faces to find the highest Z face so we can remove it for the shell
aFaceExplorer = TopExp_Explorer(myBody_step2.Shape(), TopAbs_FACE)
while aFaceExplorer.More():
aFace = topods.Face(aFaceExplorer.Current())
if face_is_plane(aFace):
aPlane = geom_plane_from_face(aFace)
# We want the highest Z face, so compare this to the previous faces
aPntLoc = aPlane.Location()
aZ = aPntLoc.Z()
if aZ > zMax:
zMax = aZ
aFaceExplorer.Next()
facesToRemove = TopTools_ListOfShape()
facesToRemove.Append(aFace)
def occ_pair_union(a, b):
algo = BRepAlgoAPI_Fuse(a, b)
algo.Build()
if not algo.IsDone():
raise Exception("warn: union algotithm failed\n")
return algo.Shape()
