E:/PROGRAMMING/X_PROJECTS/VSTUDIO/src/MODULES/Math/perlin.h File Reference

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Defines
#define	B   0x100
#define	BM   0xff
#define	N   0x1000
#define	NP   12
#define	NM   0xfff
#define	s_curve(t)   ( t * t * (3. - 2. * t) )
#define	lerp(t, a, b)   ( a + t * (b - a) )
#define	setup(i, b0, b1, r0, r1)
#define	at2(rx, ry)   ( rx * q[0] + ry * q[1] )
#define	at3(rx, ry, rz)   ( rx * q[0] + ry * q[1] + rz * q[2] )
Functions
void	init (void)
double	noise1 (double)
double	noise2 (double *)
double	noise3 (double *)
void	normalize3 (double *)
void	normalize2 (double *)
double	PerlinNoise1D (double, double, double, int)
double	PerlinNoise2D (double, double, double, double, int)
double	PerlinNoise3D (double, double, double, double, double, int)

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Define Documentation

#define at2	(	rx,
		ry		)	( rx * q[0] + ry * q[1] )

Definition at line 15 of file perlin.h.

Referenced by noise2().

#define at3	(	rx,
		ry,
		rz		)	( rx * q[0] + ry * q[1] + rz * q[2] )

Definition at line 16 of file perlin.h.

Referenced by noise3().

#define B   0x100

Definition at line 1 of file perlin.h.

Referenced by init().

#define BM   0xff

Definition at line 2 of file perlin.h.

#define lerp	(	t,
		a,
		b		)	( a + t * (b - a) )

Definition at line 8 of file perlin.h.

Referenced by noise1(), noise2(), and noise3().

#define N   0x1000

Definition at line 3 of file perlin.h.

#define NM   0xfff

Definition at line 5 of file perlin.h.

#define NP   12

Definition at line 4 of file perlin.h.

#define s_curve

(

t

)

( t * t * (3. - 2. * t) )

Definition at line 7 of file perlin.h.

Referenced by noise1(), noise2(), and noise3().

#define setup	(	i,
		b0,
		b1,
		r0,
		r1		)

Value:

t = vec[i] + N;\
        b0 = ((int)t) & BM;\
        b1 = (b0+1) & BM;\
        r0 = t - (int)t;\
        r1 = r0 - 1.;

Definition at line 9 of file perlin.h.

Referenced by noise1(), noise2(), and noise3().

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Function Documentation

void init

(

void

)

Definition at line 140 of file perlin.cpp.

References B, g1, g2, g3, normalize2(), normalize3(), and p.

Referenced by noise1(), noise2(), and noise3().

double noise1

(

double

)

Definition at line 15 of file perlin.cpp.

References g1, init(), lerp, p, s_curve, setup, and start.

Referenced by PerlinNoise1D().

double noise2

(

double *

)

double noise3

(

double *

)

void normalize2

(

double *

)

void normalize3

(

double *

)

double PerlinNoise1D	(	double	,
		double	,
		double	,
		int
	)

Definition at line 181 of file perlin.cpp.

References noise1(), and p.

double PerlinNoise2D	(	double	,
		double	,
		double	,
		double	,
		int
	)

Definition at line 197 of file perlin.cpp.

References noise2(), and p.

double PerlinNoise3D	(	double	,
		double	,
		double	,
		double	,
		double	,
		int
	)

Definition at line 215 of file perlin.cpp.

References noise3(), and p.