njRotateLightXYZ

njRotateLightXYZ	<-\|INDEX\|->
njRotateLightXYZ	Japanese
Rotates a light matrix around the X, Y, and Z axes.

FORMAT

#include <NINJA.H> 
void njRotateLightXYZ( *ptr, angx, angy, angz )
NJS_LIGHT *ptr
Angle angx 
Angle angy 
Angle angz

PARAMETERS

*ptr
light pointer
angx
angle of rotation around X axis
angy
angle of rotation around Y axis
angz
angle of rotation around Z axis

RETURN VALUE

None

ERROR VALUE

None

FUNCTION Rotates a light matrix defined with njCreateLight around the X, Y, and Z axes, in that sequence. This results in calculation of the light source position and direction.

EXAMPLE

#include <NINJA.H> 
...........

NJS_LIGHT light;

njInitSystem();
njCreateLight(&light, NJD_POINT_LIGHT);

...........
njClearMatrix();

/* Rotate 90 degrees around X axis, 
   60 degrees around Y axis, 
   and 30 degrees around Z axis */
njRotateLightXYZ(&light,
                 NJM_RAD_ANG(NJD_PI/2.f),
                 NJM_RAD_ANG(NJD_PI/3.f),
                 NJM_RAD_ANG(NJD_PI/6.f) );

NOTES Before calling this function, the light to be modified must be specified by njCreateLight and njClearMatrix must be called.

RELATED TOPICS

njCreateLight

njRotateLightXYZ	<-\|INDEX\|->