Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

I did it! #3

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

I did it! #3

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
125 changes: 125 additions & 0 deletions LSystem.html
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,125 @@
<!doctype html>
<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="Cache-Control" content="no-cache" />

<script>
function LSystem(axiom, rules) {
this.axiom = axiom;
this.rules = rules;

this.getFollower = function (sym) {
for (var i = 0; i < this.rules.length; i++) {
var tmp = this.rules[i].charAt(0);
if (tmp == sym) {
var result = this.rules[i].substring(2, this.rules[i].length);
return result;
}
}
return sym;
};

this.apply = function (string) {
var result = "";
var n = string.length;
for (var i = 0; i < n; i++) {
var a = this.getFollower(string[i]);
result = result + a;
}
return result;
};

this.getResult = function (n) {
var result = this.axiom;
for (var i = 0; i < n; i++) {

result = this.apply(result);
}
return result;
};
}

function Painter(paint, lenStep, angle) {
this.p = paint;
this.s = lenStep;
this.q = angle;

this.draw = function (string) {
var canvas = document.getElementById("canvas2");
var canvasHeight = parseInt(canvas.getAttribute("height"));
var canvasWidth = parseInt(canvas.getAttribute("width"));
var context = canvas.getContext('2d');
context.lineWidth = "1";
context.strokeStyle = "black";
context.beginPath();
context.moveTo(this.p.x, this.p.y);
var stack = [];

for (var i = 0; i < string.length; i++) {
switch (string.charAt(i)) {
case 'F':
this.p.x -= this.s * Math.cos(-this.p.a * Math.PI / 180);
this.p.y -= this.s * Math.sin(-this.p.a * Math.PI / 180);
context.lineTo(this.p.x, this.p.y);
break;
case '+':
this.p.a -= this.q;
break;
case '-':
this.p.a += this.q;
break;
case '[':
stack.push({ x: this.p.x, y: this.p.y, a: this.p.a })
break;
case ']':
var tmp = stack.pop();
this.p.x = tmp.x;
this.p.y = tmp.y;
this.p.a = tmp.a;
context.moveTo(this.p.x, this.p.y);
break;
default:
break;
}
}
context.stroke();
}

}


function run() {


var fractal = prompt ("Введите 1(куст) или 2(снежинка)", 1);
if (fractal == "2"){
var n = 3;
var q =60;
var s =2;
var point = { x: 450, y: 450, a: 0 };
var ls = new LSystem("[F]+[F]+[F]+[F]+[F]+[F]", ["F F[+FF][-FF]FF[+F][-F]FF"]);
}
else{
var q = 22.5;
var s = 10;
var point = { x: 450, y: 450, a: 250 };
var ls = new LSystem("F", ["F -F+F+[+F-F-]-[-F+F+F]"]);
var n = 4;
}

var alg = ls.getResult(n);
var painter = new Painter(point, s, q);
painter.draw(alg);
}
</script>

<body onload="run()">
<canvas height='900' width='900' id='canvas2'></canvas>



</body>

</html>