njRotateLightY | Japanese
    <-|INDEX|->
Rotates a light matrix around the Y axis.

### FORMAT

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

### PARAMETERS

*ptr
  light pointer
angy
  angle of rotation around Y axis

### RETURN VALUE

  None

### ERROR VALUE

  None

### FUNCTION

- Rotates a light matrix defined with njCreateLight around the Y axis.
- 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 60 degrees around Yaxis */
      njRotateLightY(&light, NJM_RAD_ANG(NJD_PI/3.f));

### NOTES

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

### RELATED TOPICS

  njCreateLight

njRotateLightY |
    <-|INDEX|->