slang_library_noise.c File Reference

C implementation of Perlin Simplex Noise over 1,2,3, and 4 dimensions. More...

#include "main/imports.h"
#include "slang_library_noise.h"

Go to the source code of this file.

Defines
#define	FASTFLOOR(x)   ( ((x)>0) ? ((int)x) : (((int)x)-1) )
#define	F2   0.366025403f /* F2 = 0.5*(sqrt(3.0)-1.0) */
#define	G2   0.211324865f /* G2 = (3.0-Math.sqrt(3.0))/6.0 */
#define	F3   0.333333333f
#define	G3   0.166666667f
#define	F4   0.309016994f /* F4 = (Math.sqrt(5.0)-1.0)/4.0 */
#define	G4   0.138196601f /* G4 = (5.0-Math.sqrt(5.0))/20.0 */
Functions
static float	grad1 (int hash, float x)
static float	grad2 (int hash, float x, float y)
static float	grad3 (int hash, float x, float y, float z)
static float	grad4 (int hash, float x, float y, float z, float t)
GLfloat	_slang_library_noise1 (GLfloat x)
GLfloat	_slang_library_noise2 (GLfloat x, GLfloat y)
GLfloat	_slang_library_noise3 (GLfloat x, GLfloat y, GLfloat z)
GLfloat	_slang_library_noise4 (GLfloat x, GLfloat y, GLfloat z, GLfloat w)
Variables
unsigned char	perm [512]
static unsigned char	simplex [64][4]

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Detailed Description

C implementation of Perlin Simplex Noise over 1,2,3, and 4 dimensions.

Author:

Stefan Gustavson (stegu@itn.liu.se)

Definition in file slang_library_noise.c.