You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
35 lines
1.3 KiB
35 lines
1.3 KiB
//========= Copyright © 1996-2006, Valve Corporation, All rights reserved. ============//
|
|
//
|
|
// Purpose:
|
|
//
|
|
//=====================================================================================//
|
|
|
|
#ifndef NOISE_H
|
|
#define NOISE_H
|
|
|
|
#include <math.h>
|
|
#include "basetypes.h"
|
|
#include "mathlib/vector.h"
|
|
#include "tier0/dbg.h"
|
|
|
|
|
|
// The following code is the c-ification of Ken Perlin's new noise algorithm
|
|
// "JAVA REFERENCE IMPLEMENTATION OF IMPROVED NOISE - COPYRIGHT 2002 KEN PERLIN"
|
|
// as available here: http://mrl.nyu.edu/~perlin/noise/
|
|
// it generates a single octave of noise in the -1..1 range
|
|
// this should at some point probably replace SparseConvolutionNoise - jd
|
|
float ImprovedPerlinNoise( Vector const &pnt );
|
|
|
|
// get the noise value at a point. Output range is 0..1.
|
|
float SparseConvolutionNoise( Vector const &pnt );
|
|
|
|
// get the noise value at a point, passing a custom noise shaping function. The noise shaping
|
|
// function should map the domain 0..1 to 0..1.
|
|
float SparseConvolutionNoise(Vector const &pnt, float (*pNoiseShapeFunction)(float) );
|
|
|
|
// returns a 1/f noise. more octaves take longer
|
|
float FractalNoise( Vector const &pnt, int n_octaves );
|
|
|
|
// returns a abs(f)*1/f noise i.e. turbulence
|
|
float Turbulence( Vector const &pnt, int n_octaves );
|
|
#endif // NOISE_H
|