GoodNight/GoodNight.js at master · dassader/GoodNight · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
var STAR_COUNT = 40;
var STAR_Z_INDEX = 100500;
var SVG_NAME_SPACE = "http://www.w3.org/2000/svg";
var STAR = {
    PRINT: "M 200.30535,69.729172 C 205.21044,69.729172 236.50709,141.52218 240.4754,144.40532 C 244.4437,147.28846 322.39411,154.86809 323.90987,159.53312 C 325.42562,164.19814 266.81761,216.14828 265.30186,220.81331 C 263.7861,225.47833 280.66544,301.9558 276.69714,304.83894 C 272.72883,307.72209 205.21044,268.03603 200.30534,268.03603 C 195.40025,268.03603 127.88185,307.72208 123.91355,304.83894 C 119.94524,301.9558 136.82459,225.47832 135.30883,220.8133 C 133.79307,216.14828 75.185066,164.19813 76.700824,159.53311 C 78.216581,154.86809 156.16699,147.28846 160.13529,144.40532 C 164.1036,141.52218 195.40025,69.729172 200.30535,69.729172 z ",
    STYLE: "opacity:1;fill:#ffff00;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
};


var Star = (function () {
    function Star(width, height, rotate, left, top) {
        this.width = width;
        this.height = height;
        this.rotate = rotate;
        this.left = left;
        this.top = top;
        this.initElement();
    }

    Star.prototype.initElement = function () {
        this.svgLink = document.createElementNS(SVG_NAME_SPACE, "svg");
        this.svgLink.setAttribute("width", this.width);
        this.svgLink.setAttribute("height", this.height);
        this.svgLink.style.zIndex = STAR_Z_INDEX;
        this.svgLink.style.position = "absolute";
        this.svgLink.style.left = this.left;
        this.svgLink.style.top = this.top;
        this.pahtLink = document.createElementNS(SVG_NAME_SPACE, "path");
        this.updateTransform();
        this.pahtLink.setAttribute("d", STAR.PRINT);
        this.pahtLink.setAttribute("style", STAR.STYLE);
        this.svgLink.appendChild(this.pahtLink);
        document.body.appendChild(this.svgLink);
    };

    Star.prototype.setWidth = function (newWidth) {
        this.width = newWidth;
        this.svgLink.setAttribute("width", this.width);
        this.updateTransform();
    };

    Star.prototype.setHeight = function (newHeight) {
        this.height = newHeight;
        this.svgLink.setAttribute("height", this.height);
        this.updateTransform();
    };

    Star.prototype.setTop = function (newTop) {
        this.top = newTop;
        this.svgLink.style.top = this.top;
    };

    Star.prototype.moveDown = function (count) {
        this.setTop(this.top + count);
    };

    Star.prototype.setLeft = function (newLeft) {
        this.left = newLeft;
        this.svgLink.style.left = this.left;
    };

    Star.prototype.moveRight = function (count) {
        this.setLeft(this.left + count);
    };

    Star.prototype.doRotate = function (rotate) {
        this.rotate = rotate;
        this.updateTransform();
    };

    Star.prototype.doRotateToRight = function (count) {
        this.doRotate(this.rotate += count);
    };

    Star.prototype.updateTransform = function () {
        var rotate = "rotate(" + this.rotate + ", " + this.width / 2 + ", " + this.height / 2 + ")";
        var scale = "scale(" + this.getScaleValue(this.width) + ", " + this.getScaleValue(this.height) + ")";
        this.pahtLink.setAttribute("transform", rotate + " " + scale);
    };

    Star.prototype.getScaleValue = function (value) {
        return (value / 400 * 100) / 100.0;
    };

    return Star;
}());

var Engine = (function () {
    function Engine(target, callback, speed) {
        this.target = target;
        var self = this;
        setInterval(function () {
            callback(self.target);
        }, speed);
    }

    return Engine;
}());

var starList = [];

for (var i = 0; i < STAR_COUNT; i++) {
    var star = new Star(100, 100, 0, 0, getRandom(10, document.documentElement.clientHeight));

    star.randomView = function () {
        this.setLeft(getRandom(10, document.body.clientWidth));
        this.doRotate(getRandom(0, 360));
        var side = getRandom(10, 200);
        this.setWidth(side);
        this.setHeight(side);
    };

    starList.push(star);

    star.randomView();

    new Engine(star, function (target) {
        target.moveDown(1);
        target.doRotateToRight(1);

        if(getRandom(0, 10) > 8) {
            target.moveRight(-1);
        }

        if (target.top >= document.documentElement.clientHeight + 50) {
            target.setTop(-100);
            target.randomView();
        }
    }, getRandom(5, 20));
}

function getRandom(from, to) {
    return Math.floor((Math.random() * to) + from);
}

function appendHtml(element, html) {
    var div = document.createElement('div');
    div.innerHTML = html;
    while (div.children.length > 0) {
        element.appendChild(div.children[0]);
    }
}

appendHtml(document.body, "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"460\" height=\"460\" style=\'position: absolute; z-index: 100501; left: 30px; top: 30px;\'>\n    <path transform=\'scale(0.3,0.3)\' fill=\"#00F\" d=\"m130,24a228,228 0 0,0 317,276a228,228 0 1,1-317-276\"/>\n</svg>");