simsite/frontend/node_modules/three-stdlib/helpers/PositionalAudioHelper.cjs

"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const THREE = require("three");
class PositionalAudioHelper extends THREE.Line {
  constructor(audio, range = 1, divisionsInnerAngle = 16, divisionsOuterAngle = 2) {
    const geometry = new THREE.BufferGeometry();
    const divisions = divisionsInnerAngle + divisionsOuterAngle * 2;
    const positions = new Float32Array((divisions * 3 + 3) * 3);
    geometry.setAttribute("position", new THREE.BufferAttribute(positions, 3));
    const materialInnerAngle = new THREE.LineBasicMaterial({ color: 65280 });
    const materialOuterAngle = new THREE.LineBasicMaterial({ color: 16776960 });
    super(geometry, [materialOuterAngle, materialInnerAngle]);
    this.type = "PositionalAudioHelper";
    this.audio = audio;
    this.range = range;
    this.divisionsInnerAngle = divisionsInnerAngle;
    this.divisionsOuterAngle = divisionsOuterAngle;
    this.update();
  }
  update() {
    const audio = this.audio;
    const range = this.range;
    const divisionsInnerAngle = this.divisionsInnerAngle;
    const divisionsOuterAngle = this.divisionsOuterAngle;
    const coneInnerAngle = THREE.MathUtils.degToRad(audio.panner.coneInnerAngle);
    const coneOuterAngle = THREE.MathUtils.degToRad(audio.panner.coneOuterAngle);
    const halfConeInnerAngle = coneInnerAngle / 2;
    const halfConeOuterAngle = coneOuterAngle / 2;
    let start = 0;
    let count = 0;
    let i, stride;
    const geometry = this.geometry;
    const positionAttribute = geometry.attributes.position;
    geometry.clearGroups();
    function generateSegment(from, to, divisions, materialIndex) {
      const step = (to - from) / divisions;
      positionAttribute.setXYZ(start, 0, 0, 0);
      count++;
      for (i = from; i < to; i += step) {
        stride = start + count;
        positionAttribute.setXYZ(stride, Math.sin(i) * range, 0, Math.cos(i) * range);
        positionAttribute.setXYZ(
          stride + 1,
          Math.sin(Math.min(i + step, to)) * range,
          0,
          Math.cos(Math.min(i + step, to)) * range
        );
        positionAttribute.setXYZ(stride + 2, 0, 0, 0);
        count += 3;
      }
      geometry.addGroup(start, count, materialIndex);
      start += count;
      count = 0;
    }
    generateSegment(-halfConeOuterAngle, -halfConeInnerAngle, divisionsOuterAngle, 0);
    generateSegment(-halfConeInnerAngle, halfConeInnerAngle, divisionsInnerAngle, 1);
    generateSegment(halfConeInnerAngle, halfConeOuterAngle, divisionsOuterAngle, 0);
    positionAttribute.needsUpdate = true;
    if (coneInnerAngle === coneOuterAngle)
      this.material[0].visible = false;
  }
  dispose() {
    this.geometry.dispose();
    this.material[0].dispose();
    this.material[1].dispose();
  }
}
exports.PositionalAudioHelper = PositionalAudioHelper;
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