three
Version:
JavaScript 3D library
56 lines (41 loc) • 973 B
JavaScript
import Node from '../core/Node.js';
import { nodeImmutable } from '../tsl/TSLBase.js';
/**
* A node for representing the uv coordinates of points.
*
* Can only be used with a WebGL backend. In WebGPU, point
* primitives always have the size of one pixel and can thus
* can't be used as sprite-like objects that display textures.
*
* @augments Node
*/
class PointUVNode extends Node {
static get type() {
return 'PointUVNode';
}
/**
* Constructs a new point uv node.
*/
constructor() {
super( 'vec2' );
/**
* This flag can be used for type testing.
*
* @type {boolean}
* @readonly
* @default true
*/
this.isPointUVNode = true;
}
generate( /*builder*/ ) {
return 'vec2( gl_PointCoord.x, 1.0 - gl_PointCoord.y )';
}
}
export default PointUVNode;
/**
* TSL object that represents the uv coordinates of points.
*
* @tsl
* @type {PointUVNode}
*/
export const pointUV = /*@__PURE__*/ nodeImmutable( PointUVNode );