HD88791: LEFT-HANDED AXIS SYSTEM BEING CREATED WHEN A RIGHT-HANDED AXIS SYSTEM SHOULD BE CREATED

APAR status

• Closed as user error.

Error description

• Scenario:
  1. Build the attached sample workspace.
  2. Open the
  Runtime window.
  3. Run the CAAMthBase.exe
  > Details of created
  CATMathAxis (origin and three directions) are displayed in
  console
  4. Launch the CATIA.
  5. Create an Axis System using
  the origin and three directions got in console output and
  confirm whether its Left-handed or Right-handed.
  Actual
  Result:
  A Left-handed coordinate system is created.
  Expected
  Result:
  With the only input parameters as an origin and a
  single vector, the CATMathAxis should create a Right-handed
  coordinate system.
  With some inputs the created CATMathAxis
  is Right-handed while with some other inputs it creates a
  Left-handed system. There doesn't seem to be any consistency.
  

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

• Pb1 : With the only input parameters as an origin and a single
  vector, the CATMathAxis should create a Right-handed
  coordinate
  system:
  > Create a CATMathAxis from an origin O
  and a single vector Vec
  consists in constructing a
  CATMathAxis with O as origin, Vec as first
  direction,
  CATMathJ as second direction and CATMathK as third one.
  The
  third direction is used to give the orientation of the axis
  system. Consequently a CATMathAxis created from an origin O
  and a
  single vector is not always Right-Handed.
  Pb2:With
  some inputs the created CATMathAxis is Right-handed while
  with some other inputs it creates a Left-handed system. There
  doesn't
  seem to be any consistency.
  > The made choice of
  CATMathJ and CATMathK as second and third
  direction (and not
  of (-CATMathJ) or (-CATMathK)) in the case of
  constructors
  with a single or two vectors influences the orientation
  of
  the final CATMathAxis.
  For instance, the CATMathAxis created
  by an origin and 2 vectors (the
  third direction is CATMathK
  by default) has not the same orientation
  as the one created
  with the same origin, the same first and second
  directions if
  (-CATMathK ) is given as third direction by user.
  Pb3:
  Interactively when we specify origin and only first direction,
  then it always creates Right-handed axis system:
  >
  Interactively, it is an operator of higher level which is
  called.
  It treats the data according to specific rules.
  Documentation:
  Manual Reference:
  CAA Encyclopedia - C++
  API
  Mathematics
  Topic:
  

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