HC89390: IGES : WHEN CONVERTING TO IGES, SOME SURFACES ARE TWISTED

APAR status

• Closed as suggestion for future release.

Error description

• DESCRIPTION:
  When converting a part into Iges, some surfaces are missing.
  Same occur if the part is converted to V4model format.
  The problem can also be seen directly when .igs or .model is
  read back into V5
  .
  SCENARIO:
  1. Unload the sent files to a directory.
  2. File open TP32-380_vol05.CATPart
  3. To see problem area, click on the + in Tongue in the tree
     then doubleclick on tongue in the subtree, and the spot
  with the arrows -> The join between the circle and the
  funnel is the problem. But observe that the surfaces are ok.
  4. File "save as" TP32-380_vol05.IGS
  5. File open TP32-380_vol05.IGS
  6. Zoom in onto the place where the circular part join the
  funnel. (spot explained in step 3)
  7. Notice that some small part of the surfaces are missing
  .
  FURTHER ANALYZE:
  When writing the CATPart as a V4 model you get same problem.
  .
  WORKAROUND (2 ways)
  -VERY TIMECONSUMING-
  A.
  1. Scale the CATPart UP 10 times its desired size
  2. file/write model in V4model format.
  3. Open the model in Catia V4
  4. Scale model DOWN 10 times to get its ond size
  5. CATIGS the model from V4 vand it is OK.
  .
  B.
  1. Double click on one of the surfaces in the problem area.
  2. you get a list of 4 elements to join.
  3. Keep theese elements and delete the rest of the part.
  4. file save as igs file this surfaces and they are on in
  iges.
  5. then filoe save as igs the rest of the part.
  6. You then have to merge the igs files on the receiving
  system.
  

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

• THIS APAR IS CONSIDERED AS A SUGGESTION FOR IMPROVEMENT FOR
  CATIA.
  
   JUSTIFICATION FOR DEVLOPMENT REQUEST:
  THE EXPORT FILE IS OK NOW WITH CATIA V5R09 GA AND CATIA
  V5R8SP05.
  
  The problem is now with this import process which does not
  create properly some small faces. A plan was already made
  to detect and correct this kind of faces
  
   ANSWER AND POSSIBLE BY-PASS:
   There no BYPASS when importing. Export is OK.
  

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