three
Version:
JavaScript 3D library
37 lines (20 loc) • 685 B
JavaScript
import TempNode from '../core/TempNode.js';
import { positionWorldDirection } from '../accessors/Position.js';
import { nodeProxy, vec2 } from '../tsl/TSLBase.js';
class EquirectUVNode extends TempNode {
static get type() {
return 'EquirectUVNode';
}
constructor( dirNode = positionWorldDirection ) {
super( 'vec2' );
this.dirNode = dirNode;
}
setup() {
const dir = this.dirNode;
const u = dir.z.atan2( dir.x ).mul( 1 / ( Math.PI * 2 ) ).add( 0.5 );
const v = dir.y.clamp( - 1.0, 1.0 ).asin().mul( 1 / Math.PI ).add( 0.5 );
return vec2( u, v );
}
}
export default EquirectUVNode;
export const equirectUV = /*@__PURE__*/ nodeProxy( EquirectUVNode );