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Elijah Thomas
106 lines
2.1 KiB
C++
106 lines
2.1 KiB
C++
#ifndef NW4R_MATH_TRIANGULAR_H
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#define NW4R_MATH_TRIANGULAR_H
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#include <MSL_C/math.h>
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#include <nw4r/types_nw4r.h>
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#define NW4R_MATH_PI M_PI
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#define NW4R_MATH_LN_2 0.69314718056f
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// [0, 65535] -> [0.0, 256.0f]
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#define NW4R_MATH_IDX_TO_FIDX(x) ((x) * (1.0f / 256.0f))
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// Convert degrees <-> lookup-table index
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#define NW4R_MATH_DEG_TO_FIDX(x) ((x) * (256.0f / 360.0f))
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#define NW4R_MATH_FIDX_TO_DEG(x) ((x) * (360.0f / 256.0f))
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// Convert radians <-> lookup-table index
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#define NW4R_MATH_RAD_TO_FIDX(x) ((x) * (128.0f / NW4R_MATH_PI))
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#define NW4R_MATH_FIDX_TO_RAD(x) ((x) * (NW4R_MATH_PI / 128.0f))
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namespace nw4r {
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namespace math {
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/**
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* sin
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*/
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f32 SinFIdx(f32 fidx);
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inline f32 SinIdx(u16 idx) {
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return SinFIdx(NW4R_MATH_IDX_TO_FIDX(U16ToF32(idx)));
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}
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inline f32 SinDeg(f32 deg) {
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return SinFIdx(NW4R_MATH_DEG_TO_FIDX(deg));
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}
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inline f32 SinRad(f32 rad) {
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return SinFIdx(NW4R_MATH_RAD_TO_FIDX(rad));
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}
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/**
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* cos
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*/
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f32 CosFIdx(f32 fidx);
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inline f32 CosDeg(f32 deg) {
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return CosFIdx(NW4R_MATH_DEG_TO_FIDX(deg));
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}
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inline f32 CosRad(f32 rad) {
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return CosFIdx(NW4R_MATH_RAD_TO_FIDX(rad));
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}
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/**
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* tan
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*/
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inline f32 TanFIdx(f32 fidx) {
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return tanf(NW4R_MATH_FIDX_TO_RAD(fidx));
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}
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inline f32 TanDeg(f32 deg) {
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return TanFIdx(NW4R_MATH_DEG_TO_FIDX(deg));
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}
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inline f32 TanRad(f32 rad) {
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return TanFIdx(NW4R_MATH_RAD_TO_FIDX(rad));
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}
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/**
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* sin/cos
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*/
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void SinCosFIdx(f32 *pSin, f32 *pCos, f32 fidx);
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inline void SinCosDeg(f32 *pSin, f32 *pCos, f32 deg) {
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return SinCosFIdx(pSin, pCos, NW4R_MATH_DEG_TO_FIDX(deg));
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}
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inline void SinCosRad(f32 *pSin, f32 *pCos, f32 rad) {
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return SinCosFIdx(pSin, pCos, NW4R_MATH_RAD_TO_FIDX(rad));
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}
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/**
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* atan
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*/
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f32 AtanFIdx(f32 x);
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inline f32 AtanDeg(f32 x) {
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return NW4R_MATH_FIDX_TO_DEG(AtanFIdx(x));
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}
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inline f32 AtanRad(f32 x) {
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return NW4R_MATH_FIDX_TO_RAD(AtanFIdx(x));
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}
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/**
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* atan2
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*/
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f32 Atan2FIdx(f32 y, f32 x);
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inline f32 Atan2Deg(f32 y, f32 x) {
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return NW4R_MATH_FIDX_TO_DEG(Atan2FIdx(y, x));
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}
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inline f32 Atan2Rad(f32 y, f32 x) {
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return NW4R_MATH_FIDX_TO_RAD(Atan2FIdx(y, x));
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}
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} // namespace math
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} // namespace nw4r
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#endif
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