Section of two solids results in a compound of edges

[pieterhijma]

Description

Applying a section of two solids results not in a solid but in a compound of edges. See FreeCAD/FreeCAD#25169.

Expected Behavior

The correct section as a solid.

Actual Behavior

A valid shape is returned but incorrect as a result. The output of the DRAW script that applies the section in two different ways:

shape1
Number of shapes in shape1
 VERTEX    : 4
 EDGE      : 8
 WIRE      : 5
 FACE      : 5
 SHELL     : 1
 SOLID     : 1
 COMPSOLID : 0
 COMPOUND  : 1
 SHAPE     : 25

shape2
Number of shapes in shape2
 VERTEX    : 4
 EDGE      : 8
 WIRE      : 5
 FACE      : 5
 SHELL     : 1
 SOLID     : 1
 COMPSOLID : 0
 COMPOUND  : 1
 SHAPE     : 25

Number of shapes in section1
 VERTEX    : 15
 EDGE      : 14
 WIRE      : 0
 FACE      : 0
 SHELL     : 0
 SOLID     : 0
 COMPSOLID : 0
 COMPOUND  : 1
 SHAPE     : 30

BOPAlgo_AlertAcquiredSelfIntersection
BOPAlgo_AlertAcquiredSelfIntersection

Number of shapes in section2
 VERTEX    : 14
 EDGE      : 14
 WIRE      : 0
 FACE      : 0
 SHELL     : 0
 SOLID     : 0
 COMPSOLID : 0
 COMPOUND  : 1
 SHAPE     : 29

The resulting shape:

Sample Code or DRAW Tcl Script

The DRAW script:

section.zip

Operating System

Linux

Compiler

GCC

Bitness

64-bit

OCCT Version

latest

Additional Files

No response

[luzpaz]

Hi @dpasukhi, is there a solution proposal for this yet ? (was it discussed somewhere (like discord) but not notated?)

[dpasukhi]

At the moment no.

That issue is not yet analyzed.