mirror of https://github.com/zeldaret/tp.git
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
#ifndef VEC_H
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#define VEC_H
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#include "dolphin/types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct Vec {
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f32 x, y, z;
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} Vec;
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typedef Vec* VecPtr;
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typedef Vec Point3d;
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typedef Vec* Point3dPtr;
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typedef struct SVec {
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s16 x, y, z;
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} SVec;
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void PSVECAdd(const Vec* a, const Vec* b, Vec* ab);
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void PSVECSubtract(const Vec* a, const Vec* b, Vec* a_b);
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void PSVECScale(const Vec* src, Vec* dst, f32 scale);
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void PSVECNormalize(const Vec* src, Vec* unit);
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f32 PSVECSquareMag(const Vec* v);
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f32 PSVECMag(const Vec* v);
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f32 PSVECDotProduct(const Vec* a, const Vec* b);
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void PSVECCrossProduct(const Vec* a, const Vec* b, Vec* axb);
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f32 PSVECSquareDistance(const Vec* a, const Vec* b);
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f32 PSVECDistance(const Vec* a, const Vec* b);
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void C_VECHalfAngle(const Vec* a, const Vec* b, Vec* half);
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void C_VECReflect(const Vec* src, const Vec* normal, Vec* dst);
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inline void C_VECAdd(register const Vec* a, register const Vec* b, register Vec* ab) {
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register f32 axy;
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register f32 bxy;
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register f32 az;
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register f32 sumz;
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register f32 bz;
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asm {
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psq_l axy, 0(a), 0, 0
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psq_l bxy, 0(b), 0, 0
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ps_add axy, axy, bxy
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psq_st axy, 0(ab), 0, 0
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psq_l az, 8(a), 1, 0
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psq_l bz, 8(b), 1, 0
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ps_add sumz, az, bz
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psq_st sumz, 8(ab), 1, 0
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}
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}
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inline void C_VECSubtract(register const Vec* a, register const Vec* b, register Vec* ab) {
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register f32 axy;
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register f32 bxy;
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register f32 az;
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register f32 subz;
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register f32 bz;
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asm {
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psq_l axy, 0(a), 0, 0
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psq_l bxy, 0(b), 0, 0
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ps_sub bxy, axy, bxy
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psq_st bxy, 0(ab), 0, 0
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psq_l az, 8(a), 1, 0
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psq_l bz, 8(b), 1, 0
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ps_sub subz, az, bz
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psq_st subz, 8(ab), 1, 0
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}
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}
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inline f32 C_VECSquareMag(const Vec* v) {
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register f32 x_y;
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register f32 z;
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register f32 res;
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register const f32* src = &v->x;
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asm {
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psq_l x_y, 0(src), 0, 0
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ps_mul x_y, x_y, x_y
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lfs z, 8(src)
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ps_madd res, z, z, x_y
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ps_sum0 res, res, x_y, x_y
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};
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return res;
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}
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#ifdef __cplusplus
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};
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#endif
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#endif /* VEC_H */
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