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https://github.com/zeldaret/af.git
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Lucas Shaw
fb02647839
* m_olib.c OK * ran format.py * added functions to header file * updated graphics macros in two overlays to make them work with format.py * rename z64camera.h to m_camera2.h * made recommended changes
110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
#ifndef Z64MATH_H
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#define Z64MATH_H
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#include "ultra64.h"
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#define VEC_SET(V, X, Y, Z) \
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V.x = X; \
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V.y = Y; \
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V.z = Z
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typedef struct {
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/* 0x0 */ s16 x;
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/* 0x2 */ s16 z;
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} Vec2s; // size = 0x4
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typedef struct {
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/* 0x0 */ f32 x;
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/* 0x4 */ f32 z;
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} Vec2f; // size = 0x8
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typedef struct xyz_t {
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/* 0x0 */ f32 x;
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/* 0x4 */ f32 y;
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/* 0x8 */ f32 z;
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} xyz_t; // size = 0xC
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typedef struct {
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/* 0x0 */ u16 x;
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/* 0x2 */ u16 y;
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/* 0x4 */ u16 z;
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} Vec3us; // size = 0x6
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typedef struct s_xyz {
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/* 0x0 */ s16 x;
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/* 0x2 */ s16 y;
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/* 0x4 */ s16 z;
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} s_xyz; // size = 0x6
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typedef struct {
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/* 0x0 */ s32 x;
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/* 0x4 */ s32 y;
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/* 0x8 */ s32 z;
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} Vec3i; // size = 0xC
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typedef struct {
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/* 0x0 */ f32 r; // radius
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/* 0x4 */ s16 pitch; // depends on coordinate system. See below.
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/* 0x6 */ s16 yaw; // azimuthal angle
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} VecSphGeo; // size = 0x8
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// Defines a point in the spherical coordinate system.
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// Pitch is 0 along the positive y-axis (up)
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typedef VecSphGeo VecSph;
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// Defines a point in the geographic coordinate system.
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// Pitch is 0 along the xz-plane (horizon)
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typedef VecSphGeo VecGeo;
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typedef float MtxF_t[4][4];
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typedef union {
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MtxF_t mf;
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struct {
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float xx, yx, zx, wx, xy, yy, zy, wy, xz, yz, zz, wz, xw, yw, zw, ww;
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};
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} MtxF; // size = 0x40
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#define SQ(x) ((x) * (x))
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#define CB(x) ((x) * (x) * (x))
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#define IS_ZERO(f) (fabsf(f) < 0.008f)
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// Calculate the floating point remainder of x / y.
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#define FMOD(x, y) ((x) - ((s32)((x) * (1.0f / (y))) * (f32)(y)))
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// Casting a float to an integer, when the float value is larger than what the integer type can hold,
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// leads to undefined behavior. For example (f32)0x8000 doesn't fit in a s16, so it cannot be cast to s16.
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// This isn't an issue with IDO, but is one with for example GCC.
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// A partial workaround is to cast to s32 then s16, hoping all binang values used will fit a s32.
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#define TRUNCF_BINANG(f) (s16)(s32)(f)
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// Angle conversion macros
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#define DEG_TO_RAD(degrees) ((degrees) * ((f32)M_PI / 180.0f))
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#define DEG_TO_BINANG(degrees) TRUNCF_BINANG((degrees) * (0x8000 / 180.0f))
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#define DEG_TO_BINANG_ALT(degrees) TRUNCF_BINANG(((degrees) / 180.0f) * 0x8000)
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#define DEG_TO_BINANG_ALT2(degrees) TRUNCF_BINANG(((degrees) * 0x10000) / 360.0f)
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#define DEG_TO_BINANG_ALT3(degrees) ((degrees) * (0x8000 / 180.0f))
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#define RAD_TO_DEG(radians) ((radians) * (180.0f / (f32)M_PI))
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#define RAD_TO_BINANG(radians) TRUNCF_BINANG((radians) * (0x8000 / (f32)M_PI))
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#define RAD_TO_BINANG_ALT(radians) TRUNCF_BINANG(((radians) / (f32)M_PI) * 0x8000)
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#define RAD_TO_BINANG_ALT2(radians) TRUNCF_BINANG(((radians) * 0x8000) / (f32)M_PI)
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#define BINANG_TO_DEG(binang) ((f32)(binang) * (180.0f / 0x8000))
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#define BINANG_TO_RAD(binang) ((f32)(binang) * ((f32)M_PI / 0x8000))
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#define BINANG_TO_RAD_ALT(binang) (((f32)(binang) / 0x8000) * (f32)M_PI)
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#define BINANG_TO_RAD_ALT2(binang) (((f32)(binang) * (f32)M_PI) / 0x8000)
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// Angle arithmetic macros
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#define BINANG_ROT180(angle) ((s16)(angle + 0x8000))
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#define BINANG_SUB(a, b) ((s16)(a - b))
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#define BINANG_ADD(a, b) ((s16)(a + b))
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// Vector macros
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#define SQXZ(vec) ((vec.x) * (vec.x) + (vec.z) * (vec.z))
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#define DOTXZ(vec1, vec2) ((vec1.x) * (vec2.x) + (vec1.z) * (vec2.z))
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#define SQXYZ(vec) ((vec.x) * (vec.x) + (vec.y) * (vec.y) + (vec.z) * (vec.z))
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#define DOTXYZ(vec1, vec2) ((vec1.x) * (vec2.x) + (vec1.y) * (vec2.y) + (vec1.z) * (vec2.z))
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#endif
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