BLACKHOLE - A Canvas Experiment

Developer
Darryl Huffman
Size
3,676 Kb
Views
8,096
  1. BLACKHOLE - A Canvas Experiment Previews
  2. BLACKHOLE - A Canvas Experiment HTML Codes
  3. BLACKHOLE - A Canvas Experiment CSS Codes
  4. BLACKHOLE - A Canvas Experiment JS Codes

How do I make an blackhole - a canvas experiment?

This is a canvas experiment. To make it have a "Blackhole" effect, tap the fancy blue button. . What is a blackhole - a canvas experiment? How do you make a blackhole - a canvas experiment? This script and codes were developed by Darryl Huffman on 07 January 2023, Saturday.

BLACKHOLE - A Canvas Experiment Previews
IQ Test

BLACKHOLE - A Canvas Experiment - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>BLACKHOLE - A Canvas Experiment</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css"> <link rel="stylesheet" href="css/style.css">
</head>
<body> <div class="bg"></div> <script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<script src='http://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

BLACKHOLE - A Canvas Experiment - Script Codes CSS Codes

.bg{ background-image: url(https://i.imgur.com/NI5wtj5.jpg); background-position: center; background-repeat: no-repeat; background-size: init; height: 100%; width: 100%; position: absolute; top: 0px; left: 0px;
}
.button{ width: 130px; border-radius: 5px; text-align: center; line-height: 40px; height: 40px; margin: 100px auto; background-color: #3C3C3C; font-weight: bold; font-size: 12px; cursor: pointer; transition: all 200ms; color: #FFF;
}
.button:hover{ background-color: #515151;
}
body,html{ display: flex; margin: 0; padding: 0; overflow: hidden; background: #191919; min-height: 100%; width: 100%; background-image: url(https://s24.postimg.org/4j23xsrjl/TILE.png);
}
body:before { content: '';	position: absolute;	top: 0;	right: 0;	bottom: 0;	left: 0;	background: rgb(33,33,33); /* Old browsers */
background: -moz-radial-gradient(center, ellipse cover, rgba(33,33,33,1) 0%, rgba(18,18,18,1) 100%); /* FF3.6+ */
background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,rgba(33,33,33,1)), color-stop(100%,rgba(18,18,18,1))); /* Chrome,Safari4+ */
background: -webkit-radial-gradient(center, ellipse cover, rgba(33,33,33,1) 0%,rgba(18,18,18,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-radial-gradient(center, ellipse cover, rgba(33,33,33,1) 0%,rgba(18,18,18,1) 100%); /* Opera 12+ */
background: -ms-radial-gradient(center, ellipse cover, rgba(33,33,33,1) 0%,rgba(18,18,18,1) 100%); /* IE10+ */
background: radial-gradient(ellipse at center, rgba(33,33,33,1) 0%,rgba(18,18,18,1) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#212121', endColorstr='#121212',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */	opacity: .6;
}
canvas#apparatus{ z-index:1; position: absolute; top: 0px; left: 0px;
}
*{ position: relative; z-index: 2;
}

BLACKHOLE - A Canvas Experiment - Script Codes JS Codes

var go = true;
if(window.location.hash == '#demo'){	setTimeout(function(){	go = false;	}, 9500);
}
$('#apparatus').click(function() { $(this).toggleClass('open_blackhole'); $(this).toggleClass('close_blackhole');
});
$('.bg').css('display','none');
// Define Apparatus Variables.
var cw = window.innerWidth, ch = window.innerHeight, blackhole_entities = {}, blackhole_entitiesIndex = 0, blackhole_entitieAmount = 12000, //6000 blackhole_button = $('#apparatus'), canvas = $('<canvas/>').attr({ width: cw, height: ch, id: "apparatus" }).appendTo('body'), context = canvas.get(0).getContext("2d");
var requestframe = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.msRequestAnimationFrame || window.oRequestAnimationFrame || // IE Fallback, you can even fallback to onscroll function(callback) { window.setTimeout(callback, 1000 / 60) };
// Default Entity "Class"
apparatus.blackhole = function(orbit) { blackhole_entitiesIndex++; this.id = blackhole_entitiesIndex; blackhole_entities[blackhole_entitiesIndex] = this; this.width = .5; this.height = .5; this.orbit = orbit; this.velocity = Math.floor((Math.random() * 3200) + 2500); this.angle = (Math.PI * 2 / this.width) * Math.floor((Math.random() * cw*4) + 10);; var choice = Math.random() * 5; var rands = []; rands.push(Math.random() * 100 + 1); rands.push(Math.random() * 10 + 241); var choice2 = Math.random() * 4; var rands2 = []; rands2.push(Math.random() * 100 + 1); rands2.push(Math.random() * 180 + 211); this.distance = (rands.reduce(function(p, c) { return p + c; }, 0) / rands.length); this.distance2 = (rands2.reduce(function(p, c) { return p + c; }, 0) / rands2.length); this.increase = Math.PI * 2 / this.width; this.distancefix = this.distance; this.distance2fix = this.distance2; this.color = "255,255,255"; this.alpha = 0.6 this.bx = Math.random() * 20 + 1; this.by = Math.random() * 20 + 1; this.inplace = true;
}
apparatus.blackhole.prototype.draw = function() { //context.clearRect(this.y, this.x, this.width, this.height); if (this.orbit >= 3) { this.x = this.bx + this.distance * Math.cos(this.angle / this.velocity) + cw / 2; this.y = this.by + this.distance * Math.sin(this.angle / this.velocity) + ch / 2; this.alpha = 0.6; } else { this.x = this.bx + this.distance2 * Math.cos(this.angle / this.velocity) + cw / 2; this.y = this.by + this.distance2 * Math.sin(this.angle / this.velocity) + ch / 2; this.alpha = 0.4; } if (blackhole_button.hasClass('open_blackhole')) { blackhole_button.removeClass('close_blackhole'); if (this.distance >= 171) { this.distance = this.distance - 4; } else if (this.distance <= 161) { this.distance= this.distance + 8; } if (this.distance2 >= 201) { this.distance2 = this.distance2 - 6; } else if (this.distance2 <= 161) { this.distance2 = this.distance2 + 6; } } if(blackhole_button.hasClass('close_blackhole')){ if (this.distance >= this.distancefix + 4) { this.distance = this.distance - 4; } else if (this.distance <= this.distancefix - 5) { this.distance= this.distance + 5; } if (this.distance2 >= this.distance2fix + 10) { this.distance2 = this.distance2 - 4; } else if (this.distance2 <= this.distance2fix - 10) { this.distance2 = this.distance2 + 4; } } this.angle += this.increase; context.fillStyle = "rgba(" + this.color + "," + this.alpha + ")"; context.fillRect(this.x, this.y, this.width, this.height);
}
for (var i = 0; i < blackhole_entitieAmount; i++) { new apparatus.blackhole((Math.random() * 5));
}
var mode;
apparatus.spawn_blackhole = function(){ for (i in blackhole_entities) { blackhole_entities[i].draw(); }
}
function apparatus() { if(go == true){ requestframe(function() { context.clearRect(0, 0, cw, ch); apparatus.spawn_blackhole(); apparatus(); }); }
}
apparatus();
BLACKHOLE - A Canvas Experiment - Script Codes
BLACKHOLE - A Canvas Experiment - Script Codes
Home Page Home
Developer Darryl Huffman
Username darrylhuffman
Uploaded January 07, 2023
Rating 3.5
Size 3,676 Kb
Views 8,096
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