How to merge faces? - Forum Open Cascade Technology

Qingsong Wang
Fri, 04/09/2021 - 16:57

Forums:

Hello, everyone!

Recently, I used the class BRepOffsetAPI_ThruSections to generate a section from a cirle to a rounded wire. Then I obtained a shape with 12 faces , 10 of which consist of the side surface. However, I only want one surface as the side surface. Does anyone has ideas? Thanks in advance.

Sincerely,

Qingsong

Mikhail Sazonov
Fri, 04/09/2021 - 17:36

Use wire instead of face as start and end shapes.

Qingsong Wang
Sat, 04/10/2021 - 13:40

Thanks for your reply. But I did use the wire as start and end shapes. My origin code is as following. Could you please help me check it? Thanks in advance.

Circle_h1=GCE2d_MakeArcOfCircle(gp_Circ2d(gp_Ax2d(neckLocation, gp_Dir2d()), D/2),-M_PI, 0).Value()
Circle_h2=GCE2d_MakeArcOfCircle(gp_Circ2d(gp_Ax2d(neckLocation, gp_Dir2d()), D/2),0, M_PI).Value()
ch1 = BRepBuilderAPI_MakeEdge(geomapi_To3d(Circle_h1, plane1)).Edge()
ch2= BRepBuilderAPI_MakeEdge(geomapi_To3d(Circle_h2, plane1)).Edge()
circle1= BRepBuilderAPI_MakeWire(ch1)
circle1.Add(ch2)

……

mkWire2 = BRepBuilderAPI_MakeWire(aEdge12)
mkWire2.Add(aEdge22)
mkWire2.Add(aEdge32)
mkWire2.Add(aEdge42)
mkWire2.Add(aEdge52)
mkWire2.Add(aEdge62)
mkWire2.Add(aEdge72)
mkWire2.Add(aEdge82)


generator2=BRepOffsetAPI_ThruSections(True)
generator2.AddWire(circle1.Wire())
generator2.AddWire(mkWire2.Wire())
ais2=AIS_Shape(generator2.Shape())
generator2.Build()

Mikhail Sazonov
Sat, 04/10/2021 - 20:00

You are instructing the algorithm to make a solid using the first parameter of the constructor isSolid=true. In this case it inserts start and end covers.