3D_TRIG.H File Reference

#include "3D_VIEW.H"
#include "GENERAL.H"
#include "math.h"

Go to the source code of this file.

Macros
#define	COS(X)   G_cosTable[ (X) & 0x3FF ]
#define	ICOS(X)   G_invCosTable[ (X) & 0x3FF ]
#define	M_PI   3.14159265358979323846
#define	MATH_ANGLE_360   1024
#define	MATH_ANGLE_45   128
#define	MATH_ANGLE_90   256
#define	MATH_ANGLE_ACCURACY   64
#define	MATH_MAX_ANGLE   1024
#define	MATH_MAX_DISTANCE   10000
#define	MathCosineLookup(x)   ((T_sword32)(cos(((double)(x))*2.0*M_PI/65536.0)*65536.0))
#define	MathInvCosineLookup(x)   ICOS( (x) >> 6 )
#define	MathInvDistanceLookup(x)   (G_invDistTable[x])
#define	MathPower2Lookup(x)   (G_power2table[x])
#define	MathSineLookup(x)   ((T_sword32)(sin(((double)(x))*2.0*M_PI/65536.0)*65536.0))
#define	MathTangentLookup(x)   TAN( (x) >> 6 )
#define	MathViewTanTableLookup(x)   (G_viewTanTable[x])
#define	SIN(X)   G_sinTable[ (X) & 0x3FF ]
#define	TAN(X)   G_tanTable[ (X) & 0x3FF ]

Functions
T_word16	MathArcTangent (T_sword32 y, T_sword32 x)
T_word16	MathArcTangent32 (T_sword32 y, T_sword32 x)
T_sword32	MathCosine (T_word16 angle)
T_void	MathFinish (void)
T_void	MathInitialize (T_word32 screenWidth)
T_void	MathInitializeInvDistTable (T_word32 screenWidth)
T_sword32	MathInvCosine (T_word16 angle)
T_sword32	MathSine (T_word16 angle)
T_sword32	MathTangent (T_word16 angle)
T_sword16	MathXTimesCosAngle (T_sword16 x, T_word16 angle)
T_sword16	MathXTimesSinAngle (T_sword16 x, T_word16 angle)

Variables
T_sword32	G_cosTable [MATH_MAX_ANGLE]
T_word16	G_distanceTable [256][256]
T_sword32	G_invCosTable [MATH_MAX_ANGLE]
T_sword32	G_invDistTable [MATH_MAX_DISTANCE]
T_byte8	G_power2table [257]
T_sword32	G_sinTable [MATH_MAX_ANGLE]
T_sword32	G_tanTable [MATH_MAX_ANGLE]
T_byte8	G_translucentTable [256][256]
T_sword32	G_viewTanTable [MAX_VIEW3D_WIDTH]

Macro Definition Documentation

#define COS

(

X)

G_cosTable[ (X) & 0x3FF ]

#define ICOS

(

X)

G_invCosTable[ (X) & 0x3FF ]

#define M_PI   3.14159265358979323846

#define MATH_ANGLE_360   1024

#define MATH_ANGLE_45   128

#define MATH_ANGLE_90   256

#define MATH_ANGLE_ACCURACY   64

#define MATH_MAX_ANGLE   1024

#define MATH_MAX_DISTANCE   10000

#define MathCosineLookup

(

x)

((T_sword32)(cos(((double)(x))*2.0*M_PI/65536.0)*65536.0))

#define MathInvCosineLookup

(

x)

ICOS( (x) >> 6 )

#define MathInvDistanceLookup

(

x)

(G_invDistTable[x])

#define MathPower2Lookup

(

x)

(G_power2table[x])

#define MathSineLookup

(

x)

((T_sword32)(sin(((double)(x))*2.0*M_PI/65536.0)*65536.0))

#define MathTangentLookup

(

x)

TAN( (x) >> 6 )

#define MathViewTanTableLookup

(

x)

(G_viewTanTable[x])

#define SIN

(

X)

G_sinTable[ (X) & 0x3FF ]

#define TAN

(

X)

G_tanTable[ (X) & 0x3FF ]

Variable Documentation

T_word16 G_distanceTable[256][256]