324 lines
15 KiB
C++
324 lines
15 KiB
C++
/*
|
|
* libtcod 1.6.0
|
|
* Copyright (c) 2008,2009,2010,2012,2013 Jice & Mingos
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* * The name of Jice or Mingos may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY JICE AND MINGOS ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL JICE OR MINGOS BE LIABLE FOR ANY
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _TCOD_PERLIN_HPP
|
|
#define _TCOD_PERLIN_HPP
|
|
|
|
#include "noise_defaults.h"
|
|
|
|
/**
|
|
@PageName noise
|
|
@PageCategory Base toolkits
|
|
@PageTitle Noise generator
|
|
@PageDesc This toolkit provides several functions to generate Perlin noise and other derived noises. It can handle noise functions from 1 to 4 dimensions.
|
|
@FuncDesc
|
|
Usage example:
|
|
1D noise : the variation of a torch intensity
|
|
2D fbm : heightfield generation or clouds
|
|
3D fbm : animated smoke
|
|
If you don't know what is Perlin noise and derived functions, or what is the influence of the different fractal parameters, check the Perlin noise sample included with the library.
|
|
<table width="800px" class="none">
|
|
<tr><td align="center">Simplex noise, fbm, turbulence</td>
|
|
<td align="center"><img border="1" src="simplex.png"></td>
|
|
<td align="center"><img border="1" src="fbm_simplex.png"></td>
|
|
<td align="center"><img border="1" src="turbulence_simplex.png"></td></tr>
|
|
<tr><td align="center">Perlin noise, fbm, turbulence</td>
|
|
<td align="center"><img border="1" src="perlin.png"></td>
|
|
<td align="center"><img border="1" src="fbm_perlin.png"></td>
|
|
<td align="center"><img border="1" src="turbulence_perlin.png"></td></tr>
|
|
<tr><td align="center">Wavelet noise, fbm, turbulence</td>
|
|
<td align="center"><img border="1" src="wavelet.png"></td>
|
|
<td align="center"><img border="1" src="fbm_wavelet.png"></td>
|
|
<td align="center"><img border="1" src="turbulence_wavelet.png"></td></tr>
|
|
</table>
|
|
<h6>Noise functions relative times</h6>
|
|
|
|
For example, in 4D, Perlin noise is 17 times slower than simplex noise.
|
|
<table border="1">
|
|
<tr><td></td><td>1D</td><td>2D</td><td>3D</td><td>4D</td></tr>
|
|
<tr><td>simplex</td><td>1</td><td>1</td><td>1</td><td>1</td></tr>
|
|
<tr><td>Perlin</td><td>1.3</td><td>4</td><td>5</td><td>17</td></tr>
|
|
<tr><td>wavelet</td><td>53</td><td>32</td><td>14</td><td>X</td></tr>
|
|
</table>
|
|
*/
|
|
class TCODLIB_API TCODNoise {
|
|
public :
|
|
/**
|
|
@PageName noise_init
|
|
@PageFather noise
|
|
@PageTitle Creating a noise generator
|
|
@FuncDesc Those functions initialize a noise generator from a number of dimensions (from 1 to 4), some fractal parameters and a random number generator.
|
|
The C++ version provides several constructors. When the hurst and lacunarity parameters are omitted, default values (TCOD_NOISE_DEFAULT_HURST = 0.5f and TCOD_NOISE_DEFAULT_LACUNARITY = 2.0f) are used.
|
|
@Cpp
|
|
TCODNoise::TCODNoise(int dimensions, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT)
|
|
TCODNoise::TCODNoise(int dimensions, TCODRandom *random, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT)
|
|
TCODNoise::TCODNoise(int dimensions, float hurst, float lacunarity, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT)
|
|
TCODNoise::TCODNoise(int dimensions, float hurst, float lacunarity, TCODRandom *random, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT)
|
|
@C TCOD_noise_t TCOD_noise_new(int dimensions, float hurst, float lacunarity, TCOD_random_t random)
|
|
@Py noise_new(dimensions, hurst=TCOD_NOISE_DEFAULT_HURST, lacunarity=TCOD_NOISE_DEFAULT_LACUNARITY, random=0)
|
|
@C#
|
|
TCODNoise::TCODNoise(int dimensions)
|
|
TCODNoise::TCODNoise(int dimensions, TCODRandom random)
|
|
TCODNoise::TCODNoise(int dimensions, float hurst, float lacunarity)
|
|
TCODNoise::TCODNoise(int dimensions, float hurst, float lacunarity, TCODRandom random)
|
|
@Param dimensions From 1 to 4.
|
|
@Param hurst For fractional brownian motion and turbulence, the fractal Hurst exponent. You can use the default value TCOD_NOISE_DEFAULT_HURST = 0.5f.
|
|
@Param lacunarity For fractional brownian motion and turbulence, the fractal lacunarity. You can use the default value TCOD_NOISE_DEFAULT_LACUNARITY = 2.0f.
|
|
@Param random A random number generator obtained with the Mersenne twister toolkit or NULL to use the default random number generator.
|
|
@CppEx
|
|
// 1 dimension generator
|
|
TCODNoise * noise1d = new TCODNoise(1);
|
|
// 2D noise with a predefined random number generator
|
|
TCODRandom *myRandom = new TCODRandom();
|
|
TCODNoise *noise2d = new TCODNoise(2,myRandom);
|
|
// a 3D noise generator with a specific fractal parameters
|
|
TCODNoise *noise3d = new TCODNoise(3,0.7f,1.4f);
|
|
@CEx
|
|
// 1 dimension generator
|
|
TCOD_noise_t noise1d = TCOD_noise_new(1,TCOD_NOISE_DEFAULT_HURST, TCOD_NOISE_DEFAULT_LACUNARITY,NULL);
|
|
// 2D noise with a predefined random number generator
|
|
TCOD_random_t my_random = TCOD_random_new();
|
|
TCOD_noise_t noise2d = TCOD_noise_new(2,TCOD_NOISE_DEFAULT_HURST, TCOD_NOISE_DEFAULT_LACUNARITY,my_random);
|
|
// a 3D noise generator with a specific fractal parameters
|
|
TCOD_noise_t noise3d = TCOD_noise_new(3,0.7f, 1.4f,NULL);
|
|
@PyEx
|
|
# 1 dimension generator
|
|
noise1d = libtcod.noise_new(1)
|
|
# 2D noise with a predefined random number generator
|
|
my_random = libtcod.random_new();
|
|
noise2d = libtcod.noise_new(2,libtcod.NOISE_DEFAULT_HURST, libtcod.NOISE_DEFAULT_LACUNARITY,my_random)
|
|
# a 3D noise generator with a specific fractal parameters
|
|
noise3d = libtcod.noise_new(3, 0.7, 1.4)
|
|
*/
|
|
TCODNoise(int dimensions, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT);
|
|
TCODNoise(int dimensions, TCODRandom *random, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT);
|
|
TCODNoise(int dimensions, float hurst, float lacunarity, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT);
|
|
TCODNoise(int dimensions, float hurst, float lacunarity, TCODRandom *random, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT);
|
|
|
|
/**
|
|
@PageName noise_init
|
|
@FuncDesc To release ressources used by a generator, use those functions :
|
|
@Cpp TCODNoise::~TCODNoise()
|
|
@C void TCOD_noise_delete(TCOD_noise_t noise)
|
|
@Py noise_delete(noise)
|
|
@C# void TCODNoise::Dispose()
|
|
@Param noise In the C and python versions, the generator handler, returned by the initialization function.
|
|
@CppEx
|
|
// create a generator
|
|
TCODNoise *noise = new TCODNoise(2);
|
|
// use it
|
|
...
|
|
// destroy it
|
|
delete noise;
|
|
@CEx
|
|
// create a generator
|
|
TCOD_noise_t noise = TCOD_noise_new(2,TCOD_NOISE_DEFAULT_HURST, TCOD_NOISE_DEFAUT_LACUNARITY, NULL);
|
|
// use it
|
|
...
|
|
// destroy it
|
|
TCOD_noise_delete(noise);
|
|
@PyEx
|
|
# create a generator
|
|
noise = libtcod.noise_new(2,litbcod.NOISE_DEFAULT_HURST, litbcod.NOISE_DEFAUT_LACUNARITY, 0)
|
|
# use it
|
|
...
|
|
# destroy it
|
|
litbcod.noise_delete(noise)
|
|
*/
|
|
virtual ~TCODNoise();
|
|
|
|
/**
|
|
@PageName noise_setType
|
|
@PageFather noise
|
|
@PageTitle Choosing a noise type
|
|
@FuncTitle Choosing a noise type
|
|
@FuncDesc Use this function to define the default algorithm used by the noise functions.
|
|
The default algorithm is simplex. It's much faster than Perlin, especially in 4 dimensions. It has a better contrast too.
|
|
@Cpp void TCODNoise::setType(TCOD_noise_type_t type)
|
|
@C void TCOD_noise_set_type(TCOD_noise_t noise, TCOD_noise_type_t type)
|
|
@Py noise_set_type(noise, type)
|
|
@C# void TCODNoise::setType(type)
|
|
@Param noise In the C version, the generator handler, returned by the initialization function.
|
|
@Param type The algorithm to use, either TCOD_NOISE_SIMPLEX, TCOD_NOISE_PERLIN or TCOD_NOISE_WAVELET.
|
|
@CppEx
|
|
TCODNoise * noise1d = new TCODNoise(1);
|
|
noise1d->setType(TCOD_NOISE_PERLIN);
|
|
@CEx
|
|
TCOD_noise_t noise1d = TCOD_noise_new(1,TCOD_NOISE_DEFAULT_HURST, TCOD_NOISE_DEFAULT_LACUNARITY,NULL);
|
|
TCOD_noise_set_type(noise1d,TCOD_NOISE_PERLIN);
|
|
@PyEx
|
|
noise1d = libtcod.noise_new(1)
|
|
libtcod.noise_set_type(noise1d,libtcod.NOISE_PERLIN)
|
|
*/
|
|
void setType (TCOD_noise_type_t type);
|
|
/**
|
|
@PageName noise_get
|
|
@PageFather noise
|
|
@PageTitle Getting flat noise
|
|
@FuncDesc This function returns the noise function value between -1.0 and 1.0 at given coordinates.
|
|
@Cpp float TCODNoise::get(float *f, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT)
|
|
@C float TCOD_noise_get(TCOD_noise_t noise, float *f)
|
|
float TCOD_noise_get_ex(TCOD_noise_t noise, float *f, TCOD_noise_type_t type)
|
|
@Py noise_get(noise, f, type=NOISE_DEFAULT)
|
|
@C# float TCODNoise::get(float[] f, type=NoiseDefault)
|
|
@Param noise In the C version, the generator handler, returned by the initialization function.
|
|
@Param f An array of coordinates, depending on the generator dimensions (between 1 and 4). The same array of coordinates will always return the same value.
|
|
@Param type The algorithm to use. If not defined, use the default one (set with setType or simplex if not set)
|
|
@CppEx
|
|
// 1d noise
|
|
TCODNoise * noise1d = new TCODNoise(1);
|
|
float p=0.5f;
|
|
// get a 1d simplex value
|
|
float value = noise1d->get(&p);
|
|
// 2d noise
|
|
TCODNoise * noise2d = new TCODNoise(2);
|
|
float p[2]={0.5f,0.7f};
|
|
// get a 2D Perlin value
|
|
float value = noise2d->get(p, TCOD_NOISE_PERLIN);
|
|
@CEx
|
|
// 1d noise
|
|
TCOD_noise_t noise1d = TCOD_noise_new(1,TCOD_NOISE_DEFAULT_HURST, TCOD_NOISE_DEFAULT_LACUNARITY,NULL);
|
|
float p=0.5f;
|
|
// get a 1d simplex value
|
|
float value = TCOD_noise_get(noise1d,&p);
|
|
// 2d noise
|
|
TCOD_noise_t noise2d = TCOD_noise_new(2,TCOD_NOISE_DEFAULT_HURST, TCOD_NOISE_DEFAULT_LACUNARITY,NULL);
|
|
float p[2]={0.5f,0.7f};
|
|
// get a 2d perlin value
|
|
float value = TCOD_noise_get_ex(noise2d,p,TCOD_NOISE_PERLIN);
|
|
@PyEx
|
|
# 1d noise
|
|
noise1d = libtcod.noise_new(1)
|
|
# get a 1d simplex value
|
|
value = libtcod.noise_get(noise1d,[0.5])
|
|
# 2d noise
|
|
noise2d = libtcod.noise_new(2)
|
|
# get a 2d perlin value
|
|
value = libtcod.noise_get(noise2d,[0.5,0.7], libtcod.NOISE_PERLIN)
|
|
*/
|
|
float get(float *f, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT);
|
|
/**
|
|
@PageName noise_get_fbm
|
|
@PageFather noise
|
|
@PageTitle Getting fbm noise
|
|
@FuncDesc This function returns the fbm function value between -1.0 and 1.0 at given coordinates, using fractal hurst and lacunarity defined when the generator has been created.
|
|
@Cpp float TCODNoise::getFbm(float *f, float octaves, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT)
|
|
@C float TCOD_noise_get_fbm(TCOD_noise_t noise, float *f, float octaves)
|
|
float TCOD_noise_get_fbm(TCOD_noise_t noise, float *f, float octaves, TCOD_noise_type_t type)
|
|
@Py noise_get_fbm(noise, f, octaves, type=NOISE_DEFAULT)
|
|
@C# float TCODNoise::getBrownianMotion(float[] f, float octaves, type=NoiseDefault)
|
|
@Param noise In the C version, the generator handler, returned by the initialization function.
|
|
@Param f An array of coordinates, depending on the generator dimensions (between 1 and 4). The same array of coordinates will always return the same value.
|
|
@Param octaves Number of iterations. Must be < TCOD_NOISE_MAX_OCTAVES = 128
|
|
@Param type The algorithm to use. If not defined, use the default one (set with setType or simplex if not set)
|
|
@CppEx
|
|
// 1d fbm
|
|
TCODNoise * noise1d = new TCODNoise(1);
|
|
float p=0.5f;
|
|
// get a 1d simplex fbm
|
|
float value = noise1d->getFbm(&p,32.0f);
|
|
// 2d fbm
|
|
TCODNoise * noise2d = new TCODNoise(2);
|
|
float p[2]={0.5f,0.7f};
|
|
// get a 2d perlin fbm
|
|
float value = noise2d->getFbm(p,32.0f, TCOD_NOISE_PERLIN);
|
|
@CEx
|
|
// 1d fbm
|
|
TCOD_noise_t noise1d = TCOD_noise_new(1,TCOD_NOISE_DEFAULT_HURST, TCOD_NOISE_DEFAULT_LACUNARITY,NULL);
|
|
float p=0.5f;
|
|
// get a 1d simplex fbm
|
|
float value = TCOD_noise_get_fbm(noise1d,&p,32.0f);
|
|
// 2d fbm
|
|
TCOD_noise_t noise2d = TCOD_noise_new(2,TCOD_NOISE_DEFAULT_HURST, TCOD_NOISE_DEFAULT_LACUNARITY,NULL);
|
|
float p[2]={0.5f,0.7f};
|
|
// get a 2d perlin fbm
|
|
float value = TCOD_noise_get_fbm_ex(noise2d,p,32.0f,TCOD_NOISE_PERLIN);
|
|
@PyEx
|
|
# 1d noise
|
|
noise1d = libtcod.noise_new(1)
|
|
# 1d simplex fbm
|
|
value = libtcod.noise_get_fbm(noise1d,[0.5],32.0)
|
|
# 2d noise
|
|
noise2d = libtcod.noise_new(2)
|
|
# 2d perlin fbm
|
|
value = libtcod.noise_get_fbm(noise2d,[0.5,0.7],32.0, libtcod.NOISE_PERLIN)
|
|
*/
|
|
float getFbm(float *f, float octaves, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT);
|
|
/**
|
|
@PageName noise_get_turbulence
|
|
@PageFather noise
|
|
@PageTitle Getting turbulence
|
|
@FuncDesc This function returns the turbulence function value between -1.0 and 1.0 at given coordinates, using fractal hurst and lacunarity defined when the generator has been created.
|
|
@Cpp float TCODNoise::getTurbulence(float *f, float octaves, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT)
|
|
@C float TCOD_noise_get_turbulence(TCOD_noise_t noise, float *f, float octaves)
|
|
float TCOD_noise_get_turbulence_ex(TCOD_noise_t noise, float *f, float octaves, TCOD_noise_type_t)
|
|
@Py noise_get_turbulence(noise, f, octaves, type=NOISE_DEFAULT)
|
|
@C# float TCODNoise::getTurbulence(float[] f, float octaves, type=NoiseDefault)
|
|
@Param noise In the C version, the generator handler, returned by the initialization function.
|
|
@Param f An array of coordinates, depending on the generator dimensions (between 1 and 4). The same array of coordinates will always return the same value.
|
|
@Param octaves Number of iterations. Must be < TCOD_NOISE_MAX_OCTAVES = 128
|
|
@CppEx
|
|
// 1d fbm
|
|
TCODNoise * noise1d = new TCODNoise(1);
|
|
float p=0.5f;
|
|
// a 1d simplex turbulence
|
|
float value = noise1d->getTurbulence(&p,32.0f);
|
|
// 2d fbm
|
|
TCODNoise * noise2d = new TCODNoise(2);
|
|
float p[2]={0.5f,0.7f};
|
|
// a 2d perlin turbulence
|
|
float value = noise2d->getTurbulence(p,32.0f, TCOD_NOISE_PERLIN);
|
|
@CEx
|
|
// 1d fbm
|
|
TCOD_noise_t noise1d = TCOD_noise_new(1,TCOD_NOISE_DEFAULT_HURST, TCOD_NOISE_DEFAULT_LACUNARITY,NULL);
|
|
float p=0.5f;
|
|
// a 1d simplex turbulence
|
|
float value = TCOD_noise_get_turbulence(noise1d,&p,32.0f);
|
|
// 2d fbm
|
|
TCOD_noise_t noise2d = TCOD_noise_new(2,TCOD_NOISE_DEFAULT_HURST, TCOD_NOISE_DEFAULT_LACUNARITY,NULL);
|
|
float p[2]={0.5f,0.7f};
|
|
// a 2d perlin turbulence
|
|
float value = TCOD_noise_get_turbulence_ex(noise2d,p,32.0f, TCOD_NOISE_PERLIN);
|
|
@PyEx
|
|
# 1d noise
|
|
noise1d = libtcod.noise_new(1)
|
|
# 1d simplex turbulence
|
|
value = libtcod.noise_get_turbulence(noise1d,[0.5],32.0)
|
|
# 2d noise
|
|
noise2d = libtcod.noise_new(2)
|
|
# 2d perlin turbulence
|
|
value = libtcod.noise_get_turbulence(noise2d,[0.5,0.7],32.0,libtcod.NOISE_PERLIN)
|
|
*/
|
|
float getTurbulence(float *f, float octaves, TCOD_noise_type_t type = TCOD_NOISE_DEFAULT);
|
|
|
|
protected :
|
|
friend class TCODLIB_API TCODHeightMap;
|
|
TCOD_noise_t data;
|
|
};
|
|
|
|
#endif
|