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