import { Filter, defaultFilterVertex } from '@pixi/core';
import fragment from './noise.frag';
/**
* A Noise effect filter.
*
* original filter: https://github.com/evanw/glfx.js/blob/master/src/filters/adjust/noise.js
*
* @class
* @extends PIXI.Filter
* @memberof PIXI.filters
* @author Vico @vicocotea
*/
export class NoiseFilter extends Filter
{
/**
* @param {number} [noise=0.5] - The noise intensity, should be a normalized value in the range [0, 1].
* @param {number} [seed] - A random seed for the noise generation. Default is `Math.random()`.
*/
constructor(noise = 0.5, seed = Math.random())
{
super(defaultFilterVertex, fragment, {
uNoise: 0,
uSeed: 0,
});
this.noise = noise;
this.seed = seed;
}
/**
* The amount of noise to apply, this value should be in the range (0, 1].
*
* @member {number}
* @default 0.5
*/
get noise(): number
{
return this.uniforms.uNoise;
}
set noise(value: number)
{
this.uniforms.uNoise = value;
}
/**
* A seed value to apply to the random noise generation. `Math.random()` is a good value to use.
*
* @member {number}
*/
get seed(): number
{
return this.uniforms.uSeed;
}
set seed(value: number)
{
this.uniforms.uSeed = value;
}
}