3d pure javascript 2d canvas

Developer
Darby Rathbone
Size
2,600 Kb
Views
32,384
  1. 3d pure javascript 2d canvas Previews
  2. 3d pure javascript 2d canvas HTML Codes
  3. 3d pure javascript 2d canvas JS Codes

How do I make an 3d pure javascript 2d canvas?

An icosahedron in 3d rolling in the direction of your mouse without webgl or 3d css all done with javascript and 2dcanvas.. What is a 3d pure javascript 2d canvas? How do you make a 3d pure javascript 2d canvas? This script and codes were developed by Darby Rathbone on 03 October 2022, Monday.

3d pure javascript 2d canvas Previews
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3d pure javascript 2d canvas - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>3d pure javascript 2d canvas</title>
</head>
<body> <script src="js/index.js"></script>
</body>
</html>

3d pure javascript 2d canvas - Script Codes JS Codes

function Point3d(a, c, b) { this.x = (a === undefined) ? 0 : a; this.y = (c === undefined) ? 0 : c; this.z = (b === undefined) ? 0 : b; this.fl = 400; this.vpX = 0; this.vpY = 0; this.cX = 0; this.cY = 0; this.cZ = 0
}
Point3d.prototype = { setVanishingPoint: function (b, a) { this.vpX = b; this.vpY = a }, setCenter: function (c, b, a) { this.cX = c; this.cY = b; this.cZ = a }, rotateX: function (a) { var d = Math.cos(a), b = Math.sin(a), c = this.y * d - this.z * b, e = this.z * d + this.y * b; this.y = c; this.z = e; return this }, rotateY: function (a) { var d = Math.cos(a), c = Math.sin(a), b = this.x * d - this.z * c, e = this.z * d + this.x * c; this.x = b; this.z = e; return this }, rotateZ: function (a) { var d = Math.cos(a), b = Math.sin(a), c = this.x * d - this.y * b, e = this.y * d + this.x * b; this.x = c; this.y = e; return this }, getScreenX: function () { var a = this.fl / (this.fl + this.z + this.cZ); return this.vpX + (this.cX + this.x) * a }, getScreenY: function () { var a = this.fl / (this.fl + this.z + this.cZ); return this.vpY + (this.cY + this.y) * a }
};
var points = new Array();
points.push(new Point3d(0, 0, -100));
var change = Math.sqrt(5) / 2;
for (var i = 0; i < 5; i++) { points.push(new Point3d(Math.sin(change) * Math.cos(2 * i * Math.PI / 5) * -100, Math.sin(change) * Math.sin(2 * i * Math.PI / 5) * -100, Math.cos(change) * -100))
}
for (var i = 0; i < 5; i++) { points.push(new Point3d(Math.sin(change) * Math.cos(2 * i * Math.PI / 5) * 100, Math.sin(change) * Math.sin(2 * i * Math.PI / 5) * 100, Math.cos(change) * 100))
}
points.push(new Point3d(0, 0, 100));
function display(b) { context.save(); context.beginPath(); context.moveTo(b[0].getScreenX(), b[0].getScreenY()); for (var a = 0; a < b.length; a++) { context.lineTo(b[a].getScreenX(), b[a].getScreenY()) } context.closePath(); context.clip(); context.strokeStyle = "RGBA(0,0,0,.5)"; context.fillStyle = b.color; context.fill(); context.stroke(); context.restore()
}
var faces = new Array(6);
faces[0] = [points[0], points[1], points[2]];
faces[1] = [points[0], points[2], points[3]];
faces[2] = [points[0], points[3], points[4]];
faces[3] = [points[0], points[4], points[5]];
faces[4] = [points[0], points[5], points[1]];
faces[5] = [points[8], points[5], points[1]];
faces[6] = [points[8], points[9], points[1]];
faces[7] = [points[1], points[9], points[2]];
faces[8] = [points[10], points[9], points[2]];
faces[9] = [points[10], points[3], points[2]];
faces[10] = [points[6], points[4], points[3]];
faces[11] = [points[6], points[10], points[3]];
faces[12] = [points[7], points[6], points[4]];
faces[13] = [points[7], points[4], points[5]];
faces[14] = [points[8], points[7], points[5]];
faces[15] = [points[11], points[6], points[7]];
faces[16] = [points[11], points[7], points[8]];
faces[17] = [points[11], points[8], points[9]];
faces[18] = [points[11], points[9], points[10]];
faces[19] = [points[11], points[10], points[6]];
faces.forEach(function (d, c, b) { d.color = "RGBA(" + ((Math.random() * 255) | 0) + "," + ((Math.random() * 255) | 0) + "," + ((Math.random() * 255) | 0) + ",.8)"
});
var can = document.createElement("canvas");
can.width = 500;
can.height = 500;
var context = can.getContext("2d");
document.body.appendChild(can);
var mousex = 250, mousey = 250;
context.lineWidth = 2;
faces.forEach(display);
context.stroke();
function displayer() { context.clearRect(0, 0, can.width, can.height); points.forEach(function (a) { a.rotateX((mousey - a.vpY) * 0.0001).rotateY((mousex - a.vpX) * 0.0001); a.setVanishingPoint(250, 250); a.setCenter(a.x, a.y, 500) }); faces = faces.sort(sortbyaz); faces.forEach(display) requestAnimationFrame(displayer);
}
requestAnimationFrame(displayer);
document.body.onmousemove = function (a) { mousex = a.pageX; mousey = a.pageY
};
function sortbyaz(d, c) { var h = 0, g = 0; for (var f = 0; f < d.length; f++) { h += d[f].z } for (var e = 0; e < c.length; e++) { g += c[e].z } h /= d.length + 1; g /= c.length + 1; return g - h
};
3d pure javascript 2d canvas - Script Codes
3d pure javascript 2d canvas - Script Codes
Home Page Home
Developer Darby Rathbone
Username blackkbot
Uploaded October 03, 2022
Rating 3
Size 2,600 Kb
Views 32,384
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