Not correctly read IGES file

ProDesktop Express has also problems with the file. Are you sure the IGES file is ok?


Igor Nazarov's picture

Dear Patrik,

The problem.igs face is read correctly.
But this face is not planar. So you can not create an offset at this face.

Draw Test Harness

> igesbrep problem.igs a *
> tpcompound a
> explode a w
> a_1
> mkoffset res a_1 1 1
> An exception was caught 0x008D79E0 : StdFail_NotDone: BRepOffsetAPI_MakeOffset : the wire is not planar

The Open CASCADE help say:

BRepOffsetAPI_MakeOffset Class
Describes algorithms for offsetting wires from a set of wires contained in a planar face.

Yours faithfully