Difference between revisions of "Perlin Noise/fr"
Paulatreides (talk | contribs) (New page: {{Perlin Noise}} This page is the start of a tutorial about using Perlin Noise on LCL applications to generate natural looking images. It will cover both basic theory and real usage examp...) |
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{{Perlin Noise}} | {{Perlin Noise}} | ||
| − | + | Cette page est le début d'un tutoriel au sujet de comment employer le bruit de Perlin sur des applications LCL pour produire au look natuel. Il couvrira la théorie de base et les exemples d'usage réel, avec un focus sur des exemples compilable. | |
| − | Perlin | + | Le bruit de Perlin a été inventé par [http://mrl.nyu.edu/~perlin/ Ken Perlin] pour produire des textures pour un film a appelé Tron . Aujourd'hui il est employé largement sur des films et des jeux vidéo pour produire de la fumée d'aspect naturel, des paysages, des nuages et toute texture comprenant du marbre, du verre irrégulier, etc. |
__TOC__ | __TOC__ | ||
| − | == | + | ==Demarrer== |
Perlin Noise is based on the idea of fractals, that things in nature show different degrees of change. On a rocky mountain landscape for example when can see changes with a very big amplitude, which are the mountains themselves. Smaller changes represent irregularities on those mountains and even smaller ones represent rocks. | Perlin Noise is based on the idea of fractals, that things in nature show different degrees of change. On a rocky mountain landscape for example when can see changes with a very big amplitude, which are the mountains themselves. Smaller changes represent irregularities on those mountains and even smaller ones represent rocks. | ||
Revision as of 10:42, 16 June 2007
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English (en) │
français (fr) │
中文（中国大陆） (zh_CN) │
Cette page est le début d'un tutoriel au sujet de comment employer le bruit de Perlin sur des applications LCL pour produire au look natuel. Il couvrira la théorie de base et les exemples d'usage réel, avec un focus sur des exemples compilable.
Le bruit de Perlin a été inventé par Ken Perlin pour produire des textures pour un film a appelé Tron . Aujourd'hui il est employé largement sur des films et des jeux vidéo pour produire de la fumée d'aspect naturel, des paysages, des nuages et toute texture comprenant du marbre, du verre irrégulier, etc.
Demarrer
Perlin Noise is based on the idea of fractals, that things in nature show different degrees of change. On a rocky mountain landscape for example when can see changes with a very big amplitude, which are the mountains themselves. Smaller changes represent irregularities on those mountains and even smaller ones represent rocks.
First Example
This application demonstrates a simple noise function with the following properties:
- Only 1 harmonic present
- Amplitude of 250 pixels
- Wavelength of 20 pixels
- Frequency of 0.05
- You can use a combo box to choose between Linear, Cossine and Cubic interpolation
Files:
- noise1d.lpi
- noise1d.dpr
- noise.pas
Persistence Example
This application demonstrates how to sum many noise functions to get a perlin noise function. It has the following properties:
- 3 harmonics present
- Amplitudes of 250, 125 and 62 pixels
- Wavelength of 20, 10, and 5 pixels
- Frequency of 0.05, 0.1, 0.2
- You can use a combo box to choose between Linear, Cossine and Cubic interpolation
Files:
- perlin1d.lpi
- perlin1d.dpr
- noise.pas
Subversion
You can download the source code for the examples and the library using this command:
svn co https://lazarus-ccr.svn.sourceforge.net/svnroot/lazarus-ccr/examples/noise noise
External Links
- Article with the theory of Perlin Noise.
