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#ifndef __GXLIGHTING_H__
#define __GXLIGHTING_H__
#ifdef __cplusplus
extern "C" {
#endif
/*---------------------------------------------------------------------------*/
#include "rvl/GXStruct.h"
/*---------------------------------------------------------------------------*/
void GXInitLightAttn(
GXLightObj* lt_obj,
f32 a0,
f32 a1,
f32 a2,
f32 k0,
f32 k1,
f32 k2 );
void GXInitLightAttnA ( GXLightObj *lt_obj, f32 a0, f32 a1, f32 a2);
void GXInitLightAttnK ( GXLightObj *lt_obj, f32 k0, f32 k1, f32 k2 );
void GXInitLightSpot(
GXLightObj* lt_obj,
f32 cutoff,
GXSpotFn spot_func );
void GXInitLightDistAttn(
GXLightObj* lt_obj,
f32 ref_distance,
f32 ref_brightness,
GXDistAttnFn dist_func );
void GXInitLightPos ( GXLightObj* lt_obj, f32 x, f32 y, f32 z );
void GXInitLightColor ( GXLightObj* lt_obj, GXColor color );
void GXLoadLightObjImm ( const GXLightObj* lt_obj, GXLightID light );
void GXLoadLightObjIndx ( u32 lt_obj_indx, GXLightID light );
void GXSetChanAmbColor ( GXChannelID chan, GXColor amb_color );
void GXSetChanMatColor ( GXChannelID chan, GXColor mat_color );
void GXSetNumChans ( u8 nChans );
void GXInitLightDir ( GXLightObj* lt_obj, f32 nx, f32 ny, f32 nz );
// New functions to set light direction and half-angle.
void GXInitSpecularDir ( GXLightObj* lt_obj, f32 nx, f32 ny, f32 nz );
void GXInitSpecularDirHA(
GXLightObj* lt_obj,
f32 nx,
f32 ny,
f32 nz,
f32 hx,
f32 hy,
f32 hz );
void GXSetChanCtrl(
GXChannelID chan,
GXBool enable,
GXColorSrc amb_src,
GXColorSrc mat_src,
u32 light_mask,
GXDiffuseFn diff_fn,
GXAttnFn attn_fn );
/*---------------------------------------------------------------------------*/
// Convenient Macros
#define GXInitLightPosv(lo,vec) \
(GXInitLightPos((lo), *(f32*)(vec), *((f32*)(vec)+1), *((f32*)(vec)+2)))
#define GXInitLightDirv(lo,vec) \
(GXInitLightDir((lo), *(f32*)(vec), *((f32*)(vec)+1), *((f32*)(vec)+2)))
#define GXInitSpecularDirv(lo,vec) \
(GXInitSpecularDir((lo), *(f32*)(vec), *((f32*)(vec)+1), *((f32*)(vec)+2)))
#define GXInitSpecularDirHAv(lo,vec0,vec1) \
(GXInitSpecularDirHA((lo), \
*(f32*)(vec0), *((f32*)(vec0)+1), *((f32*)(vec0)+2), \
*(f32*)(vec1), *((f32*)(vec1)+1), *((f32*)(vec1)+2)))
#define GXInitLightShininess(lobj, shininess) \
(GXInitLightAttn(lobj, 0.0F, 0.0F, 1.0F, \
(shininess)/2.0F, 0.0F, \
1.0F-(shininess)/2.0F ))
/*---------------------------------------------------------------------------*/
#ifdef __cplusplus
}
#endif
#endif // __GXLIGHTING_H__
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