34 lines
730 B
JavaScript
34 lines
730 B
JavaScript
|
import TempNode from '../core/TempNode.js';
|
||
|
|
import { positionWorldDirection } from '../accessors/PositionNode.js';
|
||
|
|
import { nodeProxy, vec2 } from '../shadernode/ShaderNode.js';
|
||
|
|
import { addNodeClass } from '../core/Node.js';
|
||
|
|
|
||
|
|
class EquirectUVNode extends TempNode {
|
||
|
|
|
||
|
|
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 = nodeProxy( EquirectUVNode );
|
||
|
|
|
||
|
|
addNodeClass( 'EquirectUVNode', EquirectUVNode );
|