gethitcode(3G) gethitcode(3G)
NAME
gethitcode - returns the current hitcode
C SPECIFICATION
long gethitcode()
PARAMETERS
none
DESCRIPTION
gethitcode returns the global variable hitcode, which keeps a cumulative
record of clipping plane hits. It does not change the hitcode value.
The hitcode is a 6-bit number, with one bit for each clipping plane:
5 4 3 2 1 0
_____________________________________________________
| | | | | | |
far near top bottom right left
| | | | | | |
|_______|________|________|________|________|________|
SEE ALSO
clearhitcode, gselect, pick
NOTES
This routine is available only in immediate mode.
The symbolic values for the hitcode bits shown above are defined in
<gl/get.h>.
This routine only functions on IRIS-4D B and G models, and therefore we
advise against its use in new development.
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