def bisect_lineline(event=None):
display.EraseAll()
li1 = gp_Lin2d(gp_Pnt2d(), gp_Dir2d(1, 0))
li2 = gp_Lin2d(gp_Pnt2d(), gp_Dir2d(0, 1))
bi = GccAna_Lin2dBisec(li1, li2)
bi_li1 = bi.ThisSolution(1)
bi_li2 = bi.ThisSolution(2)
for i in [li1, li2]:
display.DisplayShape(make_edge2d(i))
for i in [bi_li1, bi_li2]:
display.DisplayColoredShape(make_edge2d(i), 'BLUE')
display.FitAll()
def bisect_lineline(event=None):
display.EraseAll()
li1 = gp_Lin2d(gp_Pnt2d(), gp_Dir2d(1, 0))
li2 = gp_Lin2d(gp_Pnt2d(), gp_Dir2d(0, 1))
bi = GccAna_Lin2dBisec(li1, li2)
bi_li1 = bi.ThisSolution(1)
bi_li2 = bi.ThisSolution(2)
for i in [li1, li2]:
display.DisplayShape(make_edge2d(i))
for i in [bi_li1, bi_li2]:
display.DisplayColoredShape(make_edge2d(i), 'BLUE')
display.FitAll()
def bisect_linecircle(event=None):
display.EraseAll()
ci1 = gp_Circ2d(gp_Ax22d(), 10000)
li1 = gp_Lin2d(gp_Pnt2d(2000000, 20), gp_Dir2d(0, 1))
bi = GccAna_CircLin2dBisec(ci1, li1)
assert bi.IsDone()
bisec = bi.ThisSolution(1).GetObject()
pb = bisec.Parabola()
display.DisplayShape([make_edge2d(ci1), make_edge2d(li1)])
display.DisplayColoredShape(make_edge2d(pb), 'BLUE')
display.FitAll()
def bisect_linecircle(event=None):
display.EraseAll()
ci1 = gp_Circ2d(gp_Ax22d(), 10000)
li1 = gp_Lin2d(gp_Pnt2d(2000000, 20), gp_Dir2d(0, 1))
bi = GccAna_CircLin2dBisec(ci1, li1)
assert bi.IsDone()
bisec = bi.ThisSolution(1).GetObject()
pb = bisec.Parabola()
display.DisplayShape([make_edge2d(ci1), make_edge2d(li1)])
display.DisplayColoredShape(make_edge2d(pb), 'BLUE')
display.FitAll()
def cut_out(base):
outer = gp_Circ2d(gp_OX2d(), top_radius - 1.75 * roller_diameter)
inner = gp_Circ2d(gp_OX2d(), center_radius + 0.75 * roller_diameter)
geom_outer = GCE2d_MakeCircle(outer).Value()
geom_inner = GCE2d_MakeCircle(inner).Value()
Proxy(geom_inner).Reverse()
base_angle = (2. * M_PI) / mounting_hole_count
hole_angle = atan(hole_radius / mounting_radius)
correction_angle = 3 * hole_angle
left = gp_Lin2d(gp_Origin2d(), gp_DX2d())
right = gp_Lin2d(gp_Origin2d(), gp_DX2d())
left.Rotate(gp_Origin2d(), correction_angle)
right.Rotate(gp_Origin2d(), base_angle - correction_angle)
geom_left = GCE2d_MakeLine(left).Value()
geom_right = GCE2d_MakeLine(right).Value()
inter_1 = Geom2dAPI_InterCurveCurve(geom_outer, geom_left)
inter_2 = Geom2dAPI_InterCurveCurve(geom_outer, geom_right)
inter_3 = Geom2dAPI_InterCurveCurve(geom_inner, geom_right)
inter_4 = Geom2dAPI_InterCurveCurve(geom_inner, geom_left)
if inter_1.Point(1).X() > 0:
p1 = inter_1.Point(1)
else:
p1 = inter_1.Point(2)
if inter_2.Point(1).X() > 0:
p2 = inter_2.Point(1)
else:
p2 = inter_2.Point(2)
if inter_3.Point(1).X() > 0:
p3 = inter_3.Point(1)
else:
p3 = inter_3.Point(2)
if inter_4.Point(1).X() > 0:
p4 = inter_4.Point(1)
else:
p4 = inter_4.Point(2)
trimmed_outer = GCE2d_MakeArcOfCircle(outer, p1, p2).Value()
trimmed_inner = GCE2d_MakeArcOfCircle(inner, p4, p3).Value()
plane = gp_Pln(gp_Origin(), gp_DZ())
arc1 = BRepBuilderAPI_MakeEdge(geomapi_To3d(trimmed_outer, plane)).Edge()
lin1 = BRepBuilderAPI_MakeEdge(gp_Pnt(p2.X(), p2.Y(), 0),
gp_Pnt(p3.X(), p3.Y(), 0)).Edge()
arc2 = BRepBuilderAPI_MakeEdge(geomapi_To3d(trimmed_inner, plane)).Edge()
lin2 = BRepBuilderAPI_MakeEdge(gp_Pnt(p4.X(), p4.Y(), 0),
gp_Pnt(p1.X(), p1.Y(), 0)).Edge()
cutout_wire = BRepBuilderAPI_MakeWire(arc1)
cutout_wire.Add(lin1)
cutout_wire.Add(arc2)
cutout_wire.Add(lin2)
# Turn the wire into a face
cutout_face = BRepBuilderAPI_MakeFace(cutout_wire.Wire())
filleted_face = BRepFilletAPI_MakeFillet2d(cutout_face.Face())
explorer = BRepTools_WireExplorer(cutout_wire.Wire())
while explorer.More():
vertex = explorer.CurrentVertex()
filleted_face.AddFillet(vertex, roller_radius)
explorer.Next()
cutout = BRepPrimAPI_MakePrism(filleted_face.Shape(),
gp_Vec(0.0, 0.0, thickness)).Shape()
result = base
rotate = gp_Trsf()
for i in range(0, mounting_hole_count):
rotate.SetRotation(gp_OZ(), i * 2. * M_PI / mounting_hole_count)
rotated_cutout = BRepBuilderAPI_Transform(cutout, rotate, True)
result = BRepAlgoAPI_Cut(result, rotated_cutout.Shape()).Shape()
return result
