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Diffstat (limited to 'arm9/lib/NitroSDK/include/fx.h')
| -rw-r--r-- | arm9/lib/NitroSDK/include/fx.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/arm9/lib/NitroSDK/include/fx.h b/arm9/lib/NitroSDK/include/fx.h new file mode 100644 index 00000000..bdf49037 --- /dev/null +++ b/arm9/lib/NitroSDK/include/fx.h @@ -0,0 +1,177 @@ +#ifndef GUARD_FX_H +#define GUARD_FX_H + +#include "nitro/types.h" + +typedef s16 fx16; +typedef s32 fx32; +typedef s64 fx64; +typedef s64 fx64c; + +#define FX16_INT_MASK 0xF000 +#define FX16_INT_ABS_MASK 0x7000 +#define FX16_FRAC_MASK 0x0FFF +#define FX16_INT_SHIFT 0xC + +#define FX32_INT_MASK 0xFFFFF000 +#define FX32_INT_ABS_MASK 0x7FFFF000 +#define FX32_FRAC_MASK 0x00000FFF +#define FX32_INT_SHIFT 0xC + +#define FX64_INT_MASK 0xFFFFFFFFFFFFF000 +#define FX64_INT_ABS_MASK 0x7FFFFFFFFFFFF000 +#define FX64_FRAC_MASK 0x0000000000000FFF +#define FX64_INT_SHIFT 0xC + +#define FX64C_INT_MASK 0xFFFFFFFF00000000 +#define FX64C_INT_ABS_MASK 0x7FFFFFFF00000000 +#define FX64C_FRAC_MASK 0x00000000FFFFFFFF +#define FX64C_INT_SHIFT 0x20 + +#define FX_INT(TYPE, x) (((x) & TYPE ## _INT_MASK) >> TYPE ## _INT_SHIFT) +#define FX_INT_ABS(TYPE, x) (((x) & TYPE ## _INT_ABS_MASK) >> TYPE ## _INT_SHIFT) +#define FX_FRAC(TYPE, x) ((x) & TYPE ## _FRAC_MASK) + +#define FX16_INT(x) FX_INT(FX16, x) +#define FX16_INT_ABS(x) FX_INT_ABS(FX16, x) +#define FX16_FRAC(x) FX_FRAC(FX16, x) + +#define FX32_INT(x) FX_INT(FX32, x) +#define FX32_INT_ABS(x) FX_INT_ABS(FX32, x) +#define FX32_FRAC(x) FX_FRAC(FX32, x) + +#define FX64_INT(x) FX_INT(FX64, x) +#define FX64_INT_ABS(x) FX_INT_ABS(FX64, x) +#define FX64_FRAC(x) FX_FRAC(FX64, x) + +#define FX64C_INT(x) FX_INT(FX64C, x) +#define FX64C_INT_ABS(x) FX_INT_ABS(FX64C, x) +#define FX64C_FRAC(x) FX_FRAC(FX64C, x) + +//TODO: clean up these macros +#define FX32_MUL_NO_ROUND(a, b) ((fx32)(((fx64)(a) * (b)) >> FX32_INT_SHIFT)) +#define FX32_MUL(a, b) ((fx32)((((fx64)(a) * (b) + (1 << (FX32_INT_SHIFT - 1))) >> FX32_INT_SHIFT))) +#define FX32_MUL_ADD_MUL(a, b, c, d) ((fx32)(((fx64)(a) * (b) + (fx64)c * d) >> FX32_INT_SHIFT)) +//the extra term here is for rounding +#define FX32_MUL_SUB_MUL(a, b, c, d) ((fx32)(((fx64)(a) * (b) - (fx64)c * d + (1 << (FX32_INT_SHIFT - 1))) >> FX32_INT_SHIFT)) + +#define FX_MUL_FX32_FX64C(a, b) ((fx32)((((a) * (b) + ((fx64)1 << (FX64C_INT_SHIFT - 1))) >> FX64C_INT_SHIFT))) + +#define FX_FX16_TO_F32(x) ((f32)((x) / (f32)(1 << FX16_SHIFT))) +#define FX_F32_TO_FX16(x) ((fx16)(((x) > 0) ? \ + (fx16)((x) * (1 << FX16_INT_SHIFT) + 0.5f ) : \ + (fx16)((x) * (1 << FX16_INT_SHIFT) - 0.5f ))) +#define FX_F32_TO_FX32(x) ((fx32)(((x) > 0) ? \ + (fx32)((x) * (1 << FX32_INT_SHIFT) + 0.5f ) : \ + (fx32)((x) * (1 << FX32_INT_SHIFT) - 0.5f ))) +#define FX16_CONST(x) FX_F32_TO_FX16(x) +#define FX32_CONST(x) FX_F32_TO_FX32(x) + +#define FX16_ONE ((fx16)0x1000) +#define FX32_ONE ((fx32)0x00001000L) + +struct Vecx32 +{ + fx32 x; + fx32 y; + fx32 z; +}; + +struct Vecx16 +{ + fx16 x; + fx16 y; + fx16 z; +}; + +//Matrices are indexed as [column][row] +struct Mtx44 +{ + fx32 _[16]; +}; + +struct Mtx43 +{ + fx32 _[12]; +}; + +struct Mtx33 +{ + fx32 _[9]; +}; + +struct Mtx22 +{ + fx32 _[4]; +}; + +//FX +void FX_Init(); +fx32 FX_Modf(fx32 x, fx32 *iptr); + +//Atan +u16 FX_Atan(fx32 x); +u16 FX_Atan2(fx32 x, fx32 y); + +//Vec +void VEC_Add(struct Vecx32 *x, struct Vecx32 *y, struct Vecx32 *dst); +void VEC_Subtract(struct Vecx32 *x, struct Vecx32 *y, struct Vecx32 *dst); +void VEC_Fx16Add(struct Vecx16 *x, struct Vecx16 *y, struct Vecx16 *dst); +fx32 VEC_DotProduct(struct Vecx32 *x, struct Vecx32 *y); +fx32 VEC_Fx16DotProduct(struct Vecx16 *a, struct Vecx16 *b); +void VEC_CrossProduct(struct Vecx32 *a, struct Vecx32 *b, struct Vecx32 *dst); +void VEC_Fx16CrossProduct(struct Vecx16 *a, struct Vecx16 *b, struct Vecx16 *dst); +fx32 VEC_Mag(struct Vecx32 *a); +void VEC_Normalize(struct Vecx32 *a, struct Vecx32 *dst); +void VEC_Fx16Normalize(struct Vecx16 *a, struct Vecx16 *dst); +void VEC_MultAdd(fx32 factor, struct Vecx32 *a, struct Vecx32 *b, struct Vecx32 *dst); + +//CP +fx32 FX_Div(fx32 numerator, fx32 denominator); +fx32 FX_Inv(fx32 x); +fx32 FX_Sqrt(fx32 x); +fx64 FX_GetDivResultFx64c(); +fx32 FX_GetDivResult(); +void FX_InvAsync(fx32 x); +fx32 FX_GetSqrtResult(); +void FX_DivAsync(fx32 numerator, fx32 denominator); +fx32 FX_DivS32(fx32 numerator, fx32 denominator); +fx32 FX_ModS32(fx32 num, fx32 mod); + +//Mtx +//The functions ending in underscores seem to be in assembly originally +//Mtx44 +void MTX_TransApply44(struct Mtx44 *mtx, struct Mtx44 *dst, fx32 x, fx32 y, fx32 z); +void MTX_Concat44(struct Mtx44 *a, struct Mtx44 *b, struct Mtx44 *c); +void MTX_Identity44_(struct Mtx44 *dst); +void MTX_Copy44To43_(struct Mtx44 *src, struct Mtx43 *dst); +void MTX_RotX44_(struct Mtx44 *mtx, fx32 sinphi, fx32 cosphi); +void MTX_RotY44_(struct Mtx44 *mtx, fx32 sinphi, fx32 cosphi); +void MTX_RotZ44_(struct Mtx44 *mtx, fx32 sinphi, fx32 cosphi); + +//Mtx43 +void MTX_ScaleApply43(struct Mtx43 *mtx, struct Mtx43 *dst, fx32 x, fx32 y, fx32 z); +fx32 MTX_Inverse43(struct Mtx43 *mtx, struct Mtx43 *inv); +void MTX_Concat43(struct Mtx43 *a, struct Mtx43 *b, struct Mtx43 *c); +void MTX_MultVec43(struct Vecx32 *vec, struct Mtx43 *mtx, struct Vecx32 *dst); +void MTX_Identity43_(struct Mtx43 *mtx); +void MTX_Copy43To44_(struct Mtx43 *src, struct Mtx44 *dst); +void MTX_Scale43_(struct Mtx43 *dst, fx32 x, fx32 y, fx32 z); +void MTX_RotX43_(struct Mtx43 *mtx, fx32 sinphi, fx32 cosphi); +void MTX_RotY43_(struct Mtx43 *mtx, fx32 sinphi, fx32 cosphi); + +//Mtx33 +void MTX_ScaleApply33(struct Mtx33 *mtx, struct Mtx33 *dst, fx32 x, fx32 y, fx32 z); +void MTX_Concat33(struct Mtx33 *a, struct Mtx33 *b, struct Mtx33 *c); +void MTX_MultVec33(struct Vecx32 *vec, struct Mtx33 *mtx, struct Vecx32 *dst); +void MTX_Identity33_(struct Mtx33 *mtx); +void MTX_RotX33_(struct Mtx33 *mtx, fx32 sinphi, fx32 cosphi); +void MTX_RotY33_(struct Mtx33 *mtx, fx32 sinphi, fx32 cosphi); +void MTX_RotZ33_(struct Mtx33 *mtx, fx32 sinphi, fx32 cosphi); + +//Mtx22 +void MTX_ScaleApply22(struct Mtx22 *mtx, struct Mtx22 *dst, fx32 x, fx32 y); +void MTX_Identity22_(struct Mtx22 *mtx); +void MTX_Rot22_(struct Mtx22 *mtx, fx32 sinphi, fx32 cosphi); + +#endif //GUARD_FX_H |