MonkeyGG2
64 lines
2.4 KiB
JavaScript
64 lines
2.4 KiB
JavaScript
function ParticleEvent(type, count, external)
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{
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this.work = typeof external !== 'undefined' ? external : false;
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this.type = type;
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this.length = 0;
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this.radius = 0;
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this.direction = 0;
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this.sign = (Math.random() - 0.5 >= 0) ? 1 : -1;
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this.alpha = this.work ? 0.5 : 1;
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this.count = count;
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switch (this.type.name)
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{
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case 'electron':
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this.length = detector.radius.siliconSpace * detector.ratio + Math.round((detector.radius.ecal * detector.ratio + 10 - detector.radius.siliconSpace * detector.ratio) * Math.random());
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this.direction = Math.random() * Math.PI * 2;
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this.radius = 20 + Math.round((100 - 20) * Math.random());
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break;
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case 'jet':
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this.length = detector.radius.ecal * detector.ratio + Math.round((detector.radius.mucal * detector.ratio - detector.radius.ecal * detector.ratio) * Math.random());
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this.direction = Math.random() * Math.PI * 2;
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this.radius = 40 + Math.round((200 - 40) * Math.random());
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break;
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case 'muon':
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this.length = detector.radius.mucal * detector.ratio + 3 * detector.radius.mucalDark * detector.ratio + Math.round((4 * detector.radius.mucalLight * detector.ratio + 2 * detector.radius.mucalDark * detector.ratio) * Math.random());
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this.direction = Math.random() * Math.PI * 2;
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this.radius = 200 + Math.round((600 - 200) * Math.random());
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break;
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}
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this.draw(16, true);
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};
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ParticleEvent.prototype.draw = function(duration, init)
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{
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init = typeof init !== 'undefined' ? init : false;
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var ctx = detector.events.ctx;
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var cx = detector.width / 2;
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var cy = detector.height / 2;
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ctx.save();
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ctx.globalAlpha = this.alpha;
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ctx.strokeStyle = this.type.color;
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ctx.fillStyle = this.type.color;
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ctx.lineWidth = 2;
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ctx.translate(cx, cy);
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ctx.rotate(this.direction);
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ctx.translate(-cx, -cy);
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ctx.beginPath();
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ctx.arc(cx + this.length / 2, cy + this.sign * Math.round(Math.sqrt(Math.abs(this.radius * this.radius - this.length * this.length / 4))), this.radius, - this.sign * Math.PI / 2 - Math.asin(this.length / (2 * this.radius)), - this.sign * Math.PI / 2 + Math.asin(this.length / (2 * this.radius)), false);
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ctx.stroke();
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ctx.restore();
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if (!init) {
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this.alpha -= 0.03 / 16 * duration;
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}
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};
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