Accueil / npm / three@0.171.0 / examples / jsm / tsl / display / RGBShiftNode.js
RGBShiftNode.js
import { TempNode } from 'three/webgpu';
import { nodeObject, Fn, uv, uniform, vec2, sin, cos, vec4, convertToTexture } from 'three/tsl';
class RGBShiftNode extends TempNode {
static get type() {
return 'RGBShiftNode';
}
constructor( textureNode, amount = 0.005, angle = 0 ) {
super( 'vec4' );
this.textureNode = textureNode;
this.amount = uniform( amount );
this.angle = uniform( angle );
}
setup() {
const { textureNode } = this;
const uvNode = textureNode.uvNode || uv();
const sampleTexture = ( uv ) => textureNode.uv( uv );
const rgbShift = Fn( () => {
const offset = vec2( cos( this.angle ), sin( this.angle ) ).mul( this.amount );
const cr = sampleTexture( uvNode.add( offset ) );
const cga = sampleTexture( uvNode );
const cb = sampleTexture( uvNode.sub( offset ) );
return vec4( cr.r, cga.g, cb.b, cga.a );
} );
return rgbShift();
}
}
export default RGBShiftNode;
export const rgbShift = ( node, amount, angle ) => nodeObject( new RGBShiftNode( convertToTexture( node ), amount, angle ) );