HC71892: OFFSET CATPART UPDATE ERROR OFFSET : SHELL OPERATOR: INTERNAL ERROR MESSAGE

APAR status

• Closed as suggestion for future release.

Error description

• Scenario:
  --------
  1. Open the provided part
  2. Double click on the feature "Chamfer offset" under the open
  body "Chamfer" and change the offset value for 15mm.
  ===> Result: a message box appear: update error Offset: Shell
  operator: internal error.
  .
  The offset surface does not work in the case of a line in the
  profil dissapear but it work if the line is place at the
  beginning or at the end of a profil or if the desappearing
  element is an arc.
  .
  3.Double click on the feature "Blend offset" under the open body
  "Blend" and change the offset value for 15mm.
  ===> Result:The radius disappear and it works fine.
  .
  4.Double click on the feature "Offset line end and start" under
  the open body " line end and start" and change the offset value
  for 25mm.
  ==> Result: the lines disappear and it work fine.
  .
  

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

• THIS APAR IS CONSIDERED AS A SUGGESTION FOR IMPROVEMENT FOR
  CATIA.
  PLEASE CONTACT YOUR SUPPORT DEPARTMENT IN ORDER TO OPEN A
  REQUIREMENT FORM.
  .
   INCIDENT DIAGNOSIS:
   Different error messages for different cases.
  .
   JUSTIFICATION FOR DEVLOPMENT REQUEST:
  The offset code works in two steps. The first step offsets the
  topology, the second one detects self-intersections and trims
  twisted topology off.
  .
  In the case of chamfers, the offset yields twisted topology, but
  it is impossible to tell which part of the topology to keep. So
  it ends up with a non-manifold surface body, which cause the
  error. Note that in the case of a solid chamfer, it works, since
  it is easier for us to trim twisted matter off.
  .
  In the case of fillets, we know which part to discard, the one
  that contains the reversed fillet surface. So it works.
  .
  In the last case, the twisted topology lies on the shape border,
  so we do not get any non-manifold configuration. So it works
  too.
  .
   ANSWER AND POSSIBLE BY-PASS:
  In the case of a chamfer, use a solid shape instead, and extract
  the offset geometry afterwards.
  .
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels