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37 lines
1.4 KiB
C
37 lines
1.4 KiB
C
#ifndef GUARD_TRIG_H
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#define GUARD_TRIG_H
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#include "global.h"
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extern const s16 gSineTable[1280];
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#define SIN_PERIOD 1024
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#define CLAMP_SIN_PERIOD(val) \
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({ \
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s16 clamped = (val) & (SIN_PERIOD - 1); \
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clamped; \
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})
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#define ONE_CYCLE (SIN_PERIOD - 1)
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#define SIN(radAngle) (gSineTable[(radAngle)])
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#define COS(radAngle) (gSineTable[(radAngle) + 256])
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#define SIN_24_8(radAngle) Q_2_14_TO_Q_24_8(SIN(radAngle))
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#define COS_24_8(radAngle) Q_2_14_TO_Q_24_8(COS(radAngle))
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#define DEG_TO_SIN(deg) ((int)((((double)(deg)) / 360.0) * SIN_PERIOD))
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#define SIN_TO_TURNS(s) ((s) / 4)
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#define TURNS_TO_SIN(t) ((t)*4)
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#define DEG_TO_TURNS(d) SIN_TO_TURNS(DEG_TO_SIN(d))
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// NOTE: Returns a Q_24_8!
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#define SIN_DEG(degrees) Q_2_14_TO_Q_24_8(gSineTable[DEG_TO_SIN(degrees)])
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#define COS_DEG(degrees) Q_2_14_TO_Q_24_8(gSineTable[DEG_TO_SIN(degrees) + 256])
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#define SQUARE(v) ((v) * (v))
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#define CUBE(v) ((v) * (v) * (v))
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#endif // GUARD_TRIG_H
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