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Angle Conversions (#1216)

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* Angle Conversions

* Format

* namefixer

* Renames in ObjHsStump_Appear

* Format

* once more

* Explicit cast in EnSsh

* Update src/overlays/actors/ovl_En_Fishing/z_en_fishing.c

Co-authored-by: engineer124 <47598039+engineer124@users.noreply.github.com>

---------

Co-authored-by: engineer124 <47598039+engineer124@users.noreply.github.com>
This commit is contained in:
Derek Hensley
2023-04-18 16:34:58 -04:00
committed by GitHub
co-authored by engineer124
parent a67d086add
commit 823746d495
44 changed files with 128 additions and 112 deletions
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include/z64math.h
+21 -6
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@@ -114,13 +114,28 @@ typedef struct {
#define IS_ZERO(f) (fabsf(f) < 0.008f)
// Casting a float to an integer, when the float value is larger than what the integer type can hold,
// leads to undefined behavior. For example (f32)0x8000 doesn't fit in a s16, so it cannot be cast to s16.
// This isn't an issue with IDO, but is one with for example GCC.
// A partial workaround is to cast to s32 then s16, hoping all binang values used will fit a s32.
#define TRUNCF_BINANG(f) (s16)(s32)(f)
// Angle conversion macros
#define DEG_TO_BINANG(degrees) (s16)((degrees) * (0x8000 / 180.0f))
#define RADF_TO_BINANG(radf) (s16)((radf) * (0x8000 / M_PI))
#define RADF_TO_DEGF(radf) ((radf) * (180.0f / M_PI))
#define DEGF_TO_RADF(degf) ((degf) * (M_PI / 180.0f))
#define BINANG_TO_RAD(binang) ((f32)binang * (M_PI / 0x8000))
#define BINANG_TO_RAD_ALT(binang) (((f32)binang / 0x8000) * M_PI)
#define DEG_TO_RAD(degrees) ((degrees) * (M_PI / 180.0f))
#define DEG_TO_BINANG(degrees) TRUNCF_BINANG((degrees) * (0x8000 / 180.0f))
#define DEG_TO_BINANG_ALT(degrees) TRUNCF_BINANG(((degrees) / 180.0f) * 0x8000)
#define DEG_TO_BINANG_ALT2(degrees) TRUNCF_BINANG(((degrees) * 0x10000) / 360.0f)
#define DEG_TO_BINANG_ALT3(degrees) ((degrees) * (0x8000 / 180.0f))
#define RAD_TO_DEG(radians) ((radians) * (180.0f / M_PI))
#define RAD_TO_BINANG(radians) TRUNCF_BINANG((radians) * (0x8000 / M_PI))
#define RAD_TO_BINANG_ALT(radians) TRUNCF_BINANG(((radians) / M_PI) * 0x8000)
#define RAD_TO_BINANG_ALT2(radians) TRUNCF_BINANG(((radians) * 0x8000) / M_PI)
#define BINANG_TO_DEG(binang) ((f32)(binang) * (180.0f / 0x8000))
#define BINANG_TO_RAD(binang) ((f32)(binang) * (M_PI / 0x8000))
#define BINANG_TO_RAD_ALT(binang) (((f32)(binang) / 0x8000) * M_PI)
#define BINANG_TO_RAD_ALT2(binang) (((f32)(binang) * M_PI) / 0x8000)
// Angle arithmetic macros
#define BINANG_ROT180(angle) ((s16)(angle + 0x8000))