@openhps/core/src/three/nodes/utils/UVUtils.js

Open Hybrid Positioning System - Core component

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.spherizeUV = exports.rotateUV = void 0;
var _TSLBase = require("../tsl/TSLBase.js");
var _RotateNode = require("./RotateNode.js");
/**
 * Rotates the given uv coordinates around a center point
 *
 * @tsl
 * @function
 * @param {Node<vec2>} uv - The uv coordinates.
 * @param {Node<float>} rotation - The rotation defined in radians.
 * @param {Node<vec2>} center - The center of rotation
 * @return {Node<vec2>} The rotated uv coordinates.
 */
const rotateUV = exports.rotateUV = /*@__PURE__*/(0, _TSLBase.Fn)(([uv, rotation, center = (0, _TSLBase.vec2)(0.5)]) => {
  return (0, _RotateNode.rotate)(uv.sub(center), rotation).add(center);
});

/**
 * Applies a spherical warping effect to the given uv coordinates.
 *
 * @tsl
 * @function
 * @param {Node<vec2>} uv - The uv coordinates.
 * @param {Node<float>} strength - The strength of the effect.
 * @param {Node<vec2>} center - The center point
 * @return {Node<vec2>} The updated uv coordinates.
 */
const spherizeUV = exports.spherizeUV = /*@__PURE__*/(0, _TSLBase.Fn)(([uv, strength, center = (0, _TSLBase.vec2)(0.5)]) => {
  const delta = uv.sub(center);
  const delta2 = delta.dot(delta);
  const delta4 = delta2.mul(delta2);
  const deltaOffset = delta4.mul(strength);
  return uv.add(delta.mul(deltaOffset));
});