NAME
glGetClipPlane
- return the coefficients of the specified clipping plane
C SPECIFICATION
void ggllGGeettCClliippPPllaannee(
GLenum _p_l_a_n_e,
GLdouble _*_e_q_u_a_t_i_o_n )
delim $$
PARAMETERS
-
_p_l_a_n_e
-
Specifies a clipping plane.
The number of clipping planes depends on the implementation,
but at least six clipping planes are supported.
They are identified by symbolic names of the form GGLL__CCLLIIPP__PPLLAANNEE$i$
where 0 <= $ i $ < GGLL__MMAAXX__CCLLIIPP__PPLLAANNEESS.
-
_e_q_u_a_t_i_o_n
-
Returns four double-precision values that are the coefficients of the plane equation of _p_l_a_n_e in eye coordinates.
The initial value is (0, 0, 0, 0).
DESCRIPTION
ggllGGeettCClliippPPllaannee returns in _e_q_u_a_t_i_o_n the four coefficients of the plane equation
for _p_l_a_n_e.
NOTES
It is always the case that GGLL__CCLLIIPP__PPLLAANNEE$i$ = GGLL__CCLLIIPP__PPLLAANNEE00 + $i$.
If an error is generated,
no change is made to the contents of _e_q_u_a_t_i_o_n.
ERRORS
GGLL__IINNVVAALLIIDD__EENNUUMM is generated if _p_l_a_n_e is not an accepted value.
GGLL__IINNVVAALLIIDD__OOPPEERRAATTIIOONN is generated if ggllGGeettCClliippPPllaannee
is executed between the execution of ggllBBeeggiinn
and the corresponding execution of ggllEEnndd.
SEE ALSO
ggllCClliippPPllaannee((33GG))