質問編集履歴
5
追記
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```
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<!DOCTYPE html>
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<html lang="ja">
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<head>
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<meta charset="utf-8">
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<title>Interactive Art</title>
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<style>
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canvas {
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background: black;
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}
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</style>
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</head>
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<body>
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<canvas id="mycanvas" width="500" height="250">
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Canvasに対応したブラウザを使ってください。
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</canvas>
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<script>
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var img = new Image();
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img.src = "logo.PNG";
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</script>
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</html>
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```
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上記のコードを追記した結果、リロードするタイミングで一瞬だけ画像が表示されますが、すぐに消えてしまう現象に陥っております。
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4
追記
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test
CHANGED
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```
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<script>
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(function() {
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var img = new Image();
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var canvas;
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var ctx;
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var Ball;
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img.onload = (function(){
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var Stage;
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var stage;
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var canvas = document.getElementById('logo');
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var Draw;
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var draw;
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/////////////////////////////////////////////////////////////////////////
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var App;
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var app;
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/////////////////////////////////////////////////////////////////////////
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canvas = document.getElementById("mycanvas");
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if (!canvas || !canvas.getContext) return false;
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ctx = canvas.getContext(
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// var ctx = canvas.getContext('2d');
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ctx.drawImage(img, 0, 0);
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return min + Math.floor(Math.random() * (max - min + 1));
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});
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function adjustPosition(pos, r, max) {
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// if (x - r < 0) x = r;
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// if (y - r < 0) y = r;
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// if (x + r > canvas.width) x = canvas.width - r;
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// if (y + r > canvas.height) y = canvas.height - r;
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if (pos - r < 0) {
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return r;
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} else if (pos + r > max) {
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return max - r;
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} else {
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return pos;
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}
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}
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//
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(function() {
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var canvas = document.getElementById('mycanvas');
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var container = document.getElementById('wrap');
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sizing();
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function sizing() {
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canvas.height = container.offsetHeight;
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canvas.width = container.offsetWidth;
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}
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window.addEventListener('resize', function() {
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(!window.requestAnimationFrame) ? setTimeout(sizing, 300): window.requestAnimationFrame(sizing);
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});
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})();
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//
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canvas.addEventListener("click", function(e) {
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var x, y, r;
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var rect;
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// x = rand(100, 400);
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// y = rand(100, 200);
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rect = e.target.getBoundingClientRect();
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x = e.clientX - rect.left;
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y = e.clientY - rect.top;
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r = rand(0, 100) < 20 ? rand(50, 80) : rand(10, 35);
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x = adjustPosition(x, r, canvas.width);
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y = adjustPosition(y, r, canvas.height);
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balls.push(new Ball(x, y, r));
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});
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Ball = function(x, y, r) {
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this.x = x;
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this.y = y;
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this.r = r;
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this.vx = rand(-10, 10);
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this.vy = rand(-10, 10);
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this.color = "hsla(" + rand(150, 250) + ", " + rand(60, 100) + "%," + rand(40, 60) + "%," + Math.random() + ")";
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};
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Ball.prototype.draw = function() {
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ctx.beginPath();
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ctx.arc(this.x, this.y, this.r, 0, Math.PI*2);
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ctx.fillStyle = this.color;
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ctx.closePath();
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ctx.fill();
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};
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Ball.prototype.move = function() {
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if (this.x + this.r > canvas.width || this.x - this.r < 0) {
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this.vx *= -1;
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}
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if (this.y + this.r > canvas.height || this.y - this.r < 0) {
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this.vy *= -1;
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}
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this.x += this.vx;
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this.y += this.vy;
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};
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// var ball = new Ball(rand(100, 200), rand(100, 200), rand(10, 50));
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// ball.draw();
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Stage = function() {
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this.update = function() {
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var i;
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this.clear();
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for (i = 0; i < balls.length; i++) {
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balls[i].draw();
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balls[i].move();
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}
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setTimeout(function() {
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this.update();
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}.bind(this), 30);
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};
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this.clear = function() {
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ctx.fillStyle = "black";
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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}
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};
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img.src = "logo.PNG";
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img.addEventListener("load", function() {
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stage = new Stage();
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stage.update();
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draw = new Draw();
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});
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/////////////////////////////////////////////////////////////////////////
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App = function() {
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this.draw = function() {
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ctx.fillRect(0, 0, width, height);
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var img_logo = new Image();
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img_logo.src = 'img/logo.png';
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ctx.drawImage(img_logo, 0, 0);
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app.draw();
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};
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/////////////////////////////////////////////////////////////////////////
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})();
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</script>
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363
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</body>
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</html>
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```
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368
100
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369
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-
|
101
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+
上記のコードを追記した結果、リロードするタイミングで一瞬だけ画像が表示されますが、すぐに消えてしまう現象に陥っております。
|
370
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-
|
371
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他のコードはできているものをそのまま写した箇所です。
|
372
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-
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373
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現在は画面が真っ白な状態となっております。
|
3
追記
test
CHANGED
File without changes
|
test
CHANGED
@@ -369,3 +369,5 @@
|
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369
369
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「///」で囲ってある箇所は画像を挿入するために自分でコーディングした箇所です。
|
370
370
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371
371
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他のコードはできているものをそのまま写した箇所です。
|
372
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+
|
373
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+
現在は画面が真っ白な状態となっております。
|
2
修正
test
CHANGED
File without changes
|
test
CHANGED
@@ -70,32 +70,6 @@
|
|
70
70
|
|
71
71
|
```
|
72
72
|
|
73
|
-
<!DOCTYPE html>
|
74
|
-
|
75
|
-
<html lang="ja">
|
76
|
-
|
77
|
-
<head>
|
78
|
-
|
79
|
-
<meta charset="utf-8">
|
80
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-
|
81
|
-
<title>インタラクティブアート</title>
|
82
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-
|
83
|
-
<link rel="stylesheet" href="styles.css">
|
84
|
-
|
85
|
-
</head>
|
86
|
-
|
87
|
-
<body>
|
88
|
-
|
89
|
-
<div id="wrap">
|
90
|
-
|
91
|
-
<canvas id="mycanvas" width="100%" height="400">
|
92
|
-
|
93
|
-
Canvasに対応したブラウザを使ってください。
|
94
|
-
|
95
|
-
</canvas>
|
96
|
-
|
97
|
-
</div>
|
98
|
-
|
99
73
|
<script>
|
100
74
|
|
101
75
|
(function() {
|
1
追記
test
CHANGED
File without changes
|
test
CHANGED
@@ -63,3 +63,335 @@
|
|
63
63
|
|
64
64
|
|
65
65
|
以上、ご確認お願いいたします。
|
66
|
+
|
67
|
+
|
68
|
+
|
69
|
+
###追記
|
70
|
+
|
71
|
+
```
|
72
|
+
|
73
|
+
<!DOCTYPE html>
|
74
|
+
|
75
|
+
<html lang="ja">
|
76
|
+
|
77
|
+
<head>
|
78
|
+
|
79
|
+
<meta charset="utf-8">
|
80
|
+
|
81
|
+
<title>インタラクティブアート</title>
|
82
|
+
|
83
|
+
<link rel="stylesheet" href="styles.css">
|
84
|
+
|
85
|
+
</head>
|
86
|
+
|
87
|
+
<body>
|
88
|
+
|
89
|
+
<div id="wrap">
|
90
|
+
|
91
|
+
<canvas id="mycanvas" width="100%" height="400">
|
92
|
+
|
93
|
+
Canvasに対応したブラウザを使ってください。
|
94
|
+
|
95
|
+
</canvas>
|
96
|
+
|
97
|
+
</div>
|
98
|
+
|
99
|
+
<script>
|
100
|
+
|
101
|
+
(function() {
|
102
|
+
|
103
|
+
"use strict";
|
104
|
+
|
105
|
+
|
106
|
+
|
107
|
+
var canvas;
|
108
|
+
|
109
|
+
var ctx;
|
110
|
+
|
111
|
+
var Ball;
|
112
|
+
|
113
|
+
var balls = [];
|
114
|
+
|
115
|
+
var Stage;
|
116
|
+
|
117
|
+
var stage;
|
118
|
+
|
119
|
+
|
120
|
+
|
121
|
+
var img = new Image();
|
122
|
+
|
123
|
+
var Draw;
|
124
|
+
|
125
|
+
var draw;
|
126
|
+
|
127
|
+
/////////////////////////////////////////////////////////////////////////
|
128
|
+
|
129
|
+
var App;
|
130
|
+
|
131
|
+
var app;
|
132
|
+
|
133
|
+
/////////////////////////////////////////////////////////////////////////
|
134
|
+
|
135
|
+
|
136
|
+
|
137
|
+
|
138
|
+
|
139
|
+
canvas = document.getElementById("mycanvas");
|
140
|
+
|
141
|
+
if (!canvas || !canvas.getContext) return false;
|
142
|
+
|
143
|
+
ctx = canvas.getContext("2d");
|
144
|
+
|
145
|
+
|
146
|
+
|
147
|
+
function rand(min, max) {
|
148
|
+
|
149
|
+
return min + Math.floor(Math.random() * (max - min + 1));
|
150
|
+
|
151
|
+
}
|
152
|
+
|
153
|
+
|
154
|
+
|
155
|
+
function adjustPosition(pos, r, max) {
|
156
|
+
|
157
|
+
// if (x - r < 0) x = r;
|
158
|
+
|
159
|
+
// if (y - r < 0) y = r;
|
160
|
+
|
161
|
+
// if (x + r > canvas.width) x = canvas.width - r;
|
162
|
+
|
163
|
+
// if (y + r > canvas.height) y = canvas.height - r;
|
164
|
+
|
165
|
+
if (pos - r < 0) {
|
166
|
+
|
167
|
+
return r;
|
168
|
+
|
169
|
+
} else if (pos + r > max) {
|
170
|
+
|
171
|
+
return max - r;
|
172
|
+
|
173
|
+
} else {
|
174
|
+
|
175
|
+
return pos;
|
176
|
+
|
177
|
+
}
|
178
|
+
|
179
|
+
}
|
180
|
+
|
181
|
+
|
182
|
+
|
183
|
+
//
|
184
|
+
|
185
|
+
(function() {
|
186
|
+
|
187
|
+
var canvas = document.getElementById('mycanvas');
|
188
|
+
|
189
|
+
var container = document.getElementById('wrap');
|
190
|
+
|
191
|
+
sizing();
|
192
|
+
|
193
|
+
|
194
|
+
|
195
|
+
function sizing() {
|
196
|
+
|
197
|
+
canvas.height = container.offsetHeight;
|
198
|
+
|
199
|
+
canvas.width = container.offsetWidth;
|
200
|
+
|
201
|
+
}
|
202
|
+
|
203
|
+
|
204
|
+
|
205
|
+
window.addEventListener('resize', function() {
|
206
|
+
|
207
|
+
(!window.requestAnimationFrame) ? setTimeout(sizing, 300): window.requestAnimationFrame(sizing);
|
208
|
+
|
209
|
+
});
|
210
|
+
|
211
|
+
})();
|
212
|
+
|
213
|
+
//
|
214
|
+
|
215
|
+
|
216
|
+
|
217
|
+
|
218
|
+
|
219
|
+
canvas.addEventListener("click", function(e) {
|
220
|
+
|
221
|
+
var x, y, r;
|
222
|
+
|
223
|
+
var rect;
|
224
|
+
|
225
|
+
// x = rand(100, 400);
|
226
|
+
|
227
|
+
// y = rand(100, 200);
|
228
|
+
|
229
|
+
rect = e.target.getBoundingClientRect();
|
230
|
+
|
231
|
+
x = e.clientX - rect.left;
|
232
|
+
|
233
|
+
y = e.clientY - rect.top;
|
234
|
+
|
235
|
+
r = rand(0, 100) < 20 ? rand(50, 80) : rand(10, 35);
|
236
|
+
|
237
|
+
|
238
|
+
|
239
|
+
|
240
|
+
|
241
|
+
x = adjustPosition(x, r, canvas.width);
|
242
|
+
|
243
|
+
y = adjustPosition(y, r, canvas.height);
|
244
|
+
|
245
|
+
balls.push(new Ball(x, y, r));
|
246
|
+
|
247
|
+
});
|
248
|
+
|
249
|
+
|
250
|
+
|
251
|
+
Ball = function(x, y, r) {
|
252
|
+
|
253
|
+
this.x = x;
|
254
|
+
|
255
|
+
this.y = y;
|
256
|
+
|
257
|
+
this.r = r;
|
258
|
+
|
259
|
+
this.vx = rand(-10, 10);
|
260
|
+
|
261
|
+
this.vy = rand(-10, 10);
|
262
|
+
|
263
|
+
this.color = "hsla(" + rand(150, 250) + ", " + rand(60, 100) + "%," + rand(40, 60) + "%," + Math.random() + ")";
|
264
|
+
|
265
|
+
};
|
266
|
+
|
267
|
+
|
268
|
+
|
269
|
+
Ball.prototype.draw = function() {
|
270
|
+
|
271
|
+
ctx.beginPath();
|
272
|
+
|
273
|
+
ctx.arc(this.x, this.y, this.r, 0, Math.PI*2);
|
274
|
+
|
275
|
+
ctx.fillStyle = this.color;
|
276
|
+
|
277
|
+
ctx.closePath();
|
278
|
+
|
279
|
+
ctx.fill();
|
280
|
+
|
281
|
+
};
|
282
|
+
|
283
|
+
|
284
|
+
|
285
|
+
Ball.prototype.move = function() {
|
286
|
+
|
287
|
+
if (this.x + this.r > canvas.width || this.x - this.r < 0) {
|
288
|
+
|
289
|
+
this.vx *= -1;
|
290
|
+
|
291
|
+
}
|
292
|
+
|
293
|
+
if (this.y + this.r > canvas.height || this.y - this.r < 0) {
|
294
|
+
|
295
|
+
this.vy *= -1;
|
296
|
+
|
297
|
+
}
|
298
|
+
|
299
|
+
this.x += this.vx;
|
300
|
+
|
301
|
+
this.y += this.vy;
|
302
|
+
|
303
|
+
};
|
304
|
+
|
305
|
+
|
306
|
+
|
307
|
+
// var ball = new Ball(rand(100, 200), rand(100, 200), rand(10, 50));
|
308
|
+
|
309
|
+
// ball.draw();
|
310
|
+
|
311
|
+
|
312
|
+
|
313
|
+
Stage = function() {
|
314
|
+
|
315
|
+
this.update = function() {
|
316
|
+
|
317
|
+
var i;
|
318
|
+
|
319
|
+
this.clear();
|
320
|
+
|
321
|
+
for (i = 0; i < balls.length; i++) {
|
322
|
+
|
323
|
+
balls[i].draw();
|
324
|
+
|
325
|
+
balls[i].move();
|
326
|
+
|
327
|
+
}
|
328
|
+
|
329
|
+
setTimeout(function() {
|
330
|
+
|
331
|
+
this.update();
|
332
|
+
|
333
|
+
}.bind(this), 30);
|
334
|
+
|
335
|
+
};
|
336
|
+
|
337
|
+
this.clear = function() {
|
338
|
+
|
339
|
+
ctx.fillStyle = "black";
|
340
|
+
|
341
|
+
ctx.fillRect(0, 0, canvas.width, canvas.height);
|
342
|
+
|
343
|
+
}
|
344
|
+
|
345
|
+
};
|
346
|
+
|
347
|
+
|
348
|
+
|
349
|
+
img.src = "img/logo.PNG";
|
350
|
+
|
351
|
+
img.addEventListener("load", function() {
|
352
|
+
|
353
|
+
stage = new Stage();
|
354
|
+
|
355
|
+
stage.update();
|
356
|
+
|
357
|
+
draw = new Draw();
|
358
|
+
|
359
|
+
});
|
360
|
+
|
361
|
+
/////////////////////////////////////////////////////////////////////////
|
362
|
+
|
363
|
+
App = function() {
|
364
|
+
|
365
|
+
this.draw = function() {
|
366
|
+
|
367
|
+
ctx.fillRect(0, 0, width, height);
|
368
|
+
|
369
|
+
|
370
|
+
|
371
|
+
var img_logo = new Image();
|
372
|
+
|
373
|
+
img_logo.src = 'img/logo.png';
|
374
|
+
|
375
|
+
ctx.drawImage(img_logo, 0, 0);
|
376
|
+
|
377
|
+
|
378
|
+
|
379
|
+
app.draw();
|
380
|
+
|
381
|
+
};
|
382
|
+
|
383
|
+
/////////////////////////////////////////////////////////////////////////
|
384
|
+
|
385
|
+
})();
|
386
|
+
|
387
|
+
</script>
|
388
|
+
|
389
|
+
</body>
|
390
|
+
|
391
|
+
</html>
|
392
|
+
|
393
|
+
```
|
394
|
+
|
395
|
+
「///」で囲ってある箇所は画像を挿入するために自分でコーディングした箇所です。
|
396
|
+
|
397
|
+
他のコードはできているものをそのまま写した箇所です。
|