Experiment with basic 3d on 2d canvas

Developer
Matei Copot
Size
2,577 Kb
Views
24,288
  1. Experiment with basic 3d on 2d canvas Previews
  2. Experiment with basic 3d on 2d canvas HTML Codes
  3. Experiment with basic 3d on 2d canvas CSS Codes
  4. Experiment with basic 3d on 2d canvas JS Codes

How do I make an experiment with basic 3d on 2d canvas?

Also, I love every color equally as some of you may know, so this is also a #favColorParticleWeekend entry ;). What is a experiment with basic 3d on 2d canvas? How do you make a experiment with basic 3d on 2d canvas? This script and codes were developed by Matei Copot on 20 August 2022, Saturday.

Experiment with basic 3d on 2d canvas Previews
IQ Test

Experiment with basic 3d on 2d canvas - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>experiment with basic 3d on 2d canvas</title> <style> /* NOTE: The styles were added inline because Prefixfree needs access to your styles and they must be inlined if they are on local disk! */ canvas {	position: absolute;	top: 0;	left: 0;
} </style> <script src="https://cdnjs.cloudflare.com/ajax/libs/prefixfree/1.0.7/prefixfree.min.js"></script>
</head>
<body> <canvas id=c></canvas> <script src="js/index.js"></script>
</body>
</html>

Experiment with basic 3d on 2d canvas - Script Codes CSS Codes

canvas {	position: absolute;	top: 0;	left: 0;
}

Experiment with basic 3d on 2d canvas - Script Codes JS Codes

var w = c.width = window.innerWidth,	h = c.height = window.innerHeight,	ctx = c.getContext('2d'),	balls = [],	tick = 0,	fl = 260, // focal length	bd = 300, // boundaries	vp = {	// vanis point	x: w / 2,	y: h / 2	},	pts = [ // bounding box wireframe	dimensionize(-bd,-bd,0),	dimensionize(-bd,bd,0),	dimensionize(bd,bd,0),	dimensionize(bd,-bd,0),	dimensionize(bd,-bd,bd*2),	dimensionize(bd,bd,bd*2),	dimensionize(-bd,bd,bd*2),	dimensionize(-bd,-bd,bd*2)	]
for (var i = 0; i < 50; ++i)	balls.push({	x: Math.random() * bd*2 - bd,	y: Math.random() * bd*2 - bd,	z: Math.random() * bd*2,	vx: 5 * ( Math.random() - .5 ),	vy: 5 * ( Math.random() - .5 ),	vz: 5 * ( Math.random() - .5 ),	s: Math.random() * 2 + 20	});
function anim(){	window.requestAnimationFrame( anim );	++tick;	ctx.fillStyle = 'black';	ctx.fillRect( 0, 0, w, h );	ctx.strokeStyle = 'white';	for( var i = 0; i < 5; i+=4 ){	ctx.beginPath();	ctx.moveTo( pts[i].x, pts[i].y );	ctx.lineTo( pts[i+1].x, pts[i+1].y );	ctx.lineTo( pts[i+2].x, pts[i+2].y );	ctx.lineTo( pts[i+3].x, pts[i+3].y );	ctx.closePath();	ctx.stroke();	}	for( var i = 0; i < 4; ++i ){	ctx.beginPath();	ctx.moveTo( pts[i].x, pts[i].y );	ctx.lineTo( pts[7-i].x, pts[7-i].y );	ctx.stroke();	}	balls.map( function( ball ){	ball.x += ball.vx;	ball.y += ball.vy; //+=.1; uncomment for gravity ;)	ball.z += ball.vz;	if( ball.x - ball.s < -bd ){	ball.vx *= -1;	ball.x = -bd + ball.s;	} else if( ball.x + ball.s > bd ){	ball.vx *= -1;	ball.x = bd - ball.s;	}	if( ball.y - ball.s < -bd ){	ball.vy *= -1;	ball.y = -bd + ball.s;	} else if( ball.y + ball.s > bd ){	ball.vy *= -1;	ball.y = bd - ball.s;	}	if( ball.z - ball.s < 0 ){	ball.vz *= -1;	ball.z = ball.s;	} else if( ball.z + ball.s > bd*2 ){	ball.vz *= -1;	ball.z = bd*2 - ball.s;	}	});	balls.sort( function( a, b ){ return b.z - a.z } );	balls.map( function( ball ){	var p = dimensionize( ball.x, ball.y, ball.z );	p.s *= ball.s;	ctx.fillStyle = 'hsl(hue,80%,50%)'.replace( 'hue', ( ball.x+ball.y+ball.z ) / 4 + tick );	ctx.beginPath();	ctx.arc( p.x, p.y, p.s, 0, Math.PI * 2 );	ctx.fill();	})
}
anim();
function dimensionize( x, y, z ){	var scale = fl / ( fl + z );	return {	x: vp.x + x * scale,	y: vp.y + y * scale,	s: scale	};
}
Experiment with basic 3d on 2d canvas - Script Codes
Experiment with basic 3d on 2d canvas - Script Codes
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Developer Matei Copot
Username towc
Uploaded August 20, 2022
Rating 4
Size 2,577 Kb
Views 24,288
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