LoginSignup
2
1

More than 3 years have passed since last update.

なでしこの研究 その7

Posted at

概要

なでしこをplunkerでホスティングしてみた。
plugin、書いてみた。
ドレミ、です。

サンプルコード

const PluginDoremi = {
    '初期化': {
        type: 'func',
        josi: [],
        fn: function(sys) {
            sys._sakura = {
                audioContext: new AudioContext(),
                oto: function(key) {
                    var osciillatorNode = this.audioContext.createOscillator();
                    var envelopeGen = this.audioContext.createGain();
                    var freq = 440.0 * Math.pow(2.0, (key - 69.0) / 12.0);
                    osciillatorNode.frequency.value = freq;
                    osciillatorNode.connect(envelopeGen);
                    envelopeGen.connect(this.audioContext.destination);
                    var t1 = this.audioContext.currentTime;
                    envelopeGen.gain.cancelScheduledValues(t1);
                    envelopeGen.gain.setValueAtTime(1, t1);
                    osciillatorNode.start();
                    var release = 0.2;
                    var keyUpTime = this.audioContext.currentTime;
                    envelopeGen.gain.setValueAtTime(envelopeGen.gain.value, keyUpTime);
                    envelopeGen.gain.linearRampToValueAtTime(0, keyUpTime + release);
                    osciillatorNode.stop(keyUpTime + release);
                },
                sleep: function(milliseconds) {
                    var start = new Date().getTime();
                    for (var i = 0; i < 1e7; i++)
                    {
                        if ((new Date().getTime() - start) > 100 * milliseconds)
                        {
                            break;
                        }
                    }
                }
            }
        }
    },
    'ドレミ作成': {
        type: 'func',
        josi: [],
        fn: function(sys) {
            const id = 2
            return id
        }
    },
    'ドレミ斉唱': {
        type: 'func',
        josi: [],
        fn: function(sys) {
            var mml = sys.__getSysValue('ドレミ曲', 'MML')
            for (var i = 0; i < mml.length; i++)
            {
                mml = mml.replace('ァ', '');
            }
            for (var i = 0; i < mml.length; i++)
            {
                var a = mml[i];
                switch (a)
                {
                case 'a':
                    sys._sakura.oto('69');
                break;
                case 'シ':
                    sys._sakura.oto('71');
                break;
                case 'ド':
                    sys._sakura.oto('72');
                break;
                case 'レ':
                    sys._sakura.oto('74');
                break;
                case 'ミ':
                    sys._sakura.oto('76');
                break;
                case 'フ':
                    sys._sakura.oto('77');
                break;
                case 'ソ':
                    sys._sakura.oto('79');
                break;
                case 'ラ':
                    sys._sakura.oto('81');
                break;
                case 'B':
                    sys._sakura.oto('83');
                break;
                default:
                break;
                }
                sys._sakura.sleep(4);
            }
            const id = 1
            return id
        }
    },
    'ドレミ曲': {
        type: 'var',
        value: 'MML'
    }
}
navigator.nako3.addPluginObject('PluginDoremi', PluginDoremi)

成果物

以上。

2
1
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
2
1