AYUDA AMIGOS, NO MANDA ERRORES Y TAMPOCO DIBUJA EN EL CANVAS
Publicado por CRISTIAN OMAR (13 intervenciones) el 29/03/2021 19:07:50
#NO DOY CON EL POR QUE NO PUEDO DIBUJAR EN EL CANVAS, SALUDOS
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
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie-edge">
<title>Animated Clouds Effect</title>
<style type="text/css">
* {
margin: 0; padding: 0;box-sizing: border-box;
}#canvas { position: absolute;top: 0; left: 0;
width: 100%;
height: 100%;
background: linear-gradient(#25364f,#4d71a5,#9bc4ff);
}</style>
</head>
<body>
<canvas id='canvas'></canvas>
<script type="text/javascript">
const canvas = document.getElementById('canvas');
const ctx = canvas.getContext('2d');
ctx.canvas.width = window.innerWidth;
ctx.canvas.height = window.innerHeight;
let particleArray = [];
const colours = [
'white',
'rgba(255,255,255,0.3)',
'rgba(173,216,230,0.8)',
'rgba(211,211,211,0.3)'];const maxSize = 40;const minSize = 0;const mouseRadius = 60;//mouse positionlet mouse = {
x: null,
y: null}window.addEventListener('mousemove', function (event) {
mouse.x = event.x;
mouse.y = event.y;
console.log(mouse);
})//create constructor function for particlefunction Particle(x, y, directionX, directionY, size, colour) {
this.x = x;
this.y = y;
this.directionX = directionX;
this.directionY = directionY;
this.size = size;
this.colour = colour;
}//add draw method to particle prototypeParticle.prototype.draw = function () {
ctx.beginPath();
ctx.arc(this.x, this.y, this.size, 0, Math.PI * 2, false);
ctx.fillStyle = this.colour;
ctx.fill();
}//add update method to particle prototypeParticle.prototype.update = function () {
if (this.x + this.size * 2 > canvas.width || this.x - this.size * 2 < 0) {
this.directionX = -this.directionX;
}if (this.y + this.size * 2 > canvas.height || this.y - this.size * 2 < 0) {
this.directionY = -this.directionY;
}this.x += this.directionX;
this.y += this.directionY;
//mouse interactivityif (mouse.x - this.x < mouseRadius && mouse.x - this.x > mouseRadius && mouse.y - this.y < mouseRadius && mouse.y - this.y > mouseRadius ) {
if (this.size < maxSize) {
this.size += 3;
}} else if (this.size > minSize) {
this.size -= 0.1;
} if (this.size < 0) {
this.size = 0;
}this.draw();
}//create particle arrayfunction init() {
particleArray = [];
for (let i=0; i < 1000; i++) {
let size = 0;let x = (Math.random() * ((innerWidth - size * 2) - (size * 2)) + size * 2);
let y = (Math.random() * ((innerHeight - size * 2) - (size * 2)) + size * 2);
let directionX = (Math.random() * .2) - .1;
let directionY = (Math.random() * .2) - .1;
let colour = colours[Math.floor(Math.random() * colours.length)];
particleArray.push(new Particle(x, y, directionX, directionY, size, colour));
}}//animation loopfunction animate() {
requestAnimationFrame(animate);
ctx.clearRect(0 , 0, innerWidth, innerHeight);
for (let i = 0; i < particleArray.length; i ++) {
particleArray[i].update();
}}init();
animate();
window.addEventListener('resize', () => {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
init();
})
</script>
</body>
</html>
Valora esta pregunta


0
