Hello Guys,
I need your help, I want to draw growing circles like a darts board and like attached picture using jQuery (I prefer) or another javascript library.
Regards,
[IMG]http://ayyash.info/Circles.jpg[/IMG]
Hello Guys,
I need your help, I want to draw growing circles like a darts board and like attached picture using jQuery (I prefer) or another javascript library.
Regards,
[IMG]http://ayyash.info/Circles.jpg[/IMG]
ya.basha,
I've not used it but the general approach is to download the lib to your hard disk (and upload to your web site if necessary), install it on your page with <script type="text/javascript" src="....."></script>, then follow the examples/documentation to make it draw what you want.
Airshow
Sorry, that's rubbish. I misread your post. I thought you were asking about one of the utilities for which I posted links. Doh!
I've not used HTML5's canvas yet but I'm sure there's good advice on the web.
Airshow
Forgive the indentation, something weird happens copying and pasting from notepad++.
Very simple, expanding circles, could be done a lot better, but I think it gives you an idea, I also attempted to get the colours right from your attached picture, which didn't go that well.
Sorry, really didn't see the need for jQuery.
<canvas id="circles"> <p> Sorry no support.</p> </canvas>
(function () {
var canvas = document.getElementById('circles');
if ( canvas.getContext ) {
var strokeColours = ['#584A34', '#828865', '#5B5466', '#52807C', '#B9896D'],
circles = canvas.getContext('2d');
for (var i = 0; i < 5; i++ ) {
var arcRadius = (i === 0) ? 15 : i * 15;
circles.beginPath();
circles.arc(100, 80, arcRadius, 0, Math.PI * 2, true);
circles.closePath();
//Stroke colours set in the array above (in order)
circles.strokeStyle = strokeColours[i];
circles.stroke();
//Fill the first one, in a shade of green.
if ( i === 0 ) {
circles.fillStyle = '#01af50';
circles.fill();
}
}
}
})();
Output is attached.
-MrDJK.
Here is simple javascript fucntion to draw circle. There no efficient algo used here.
But you can implement good and efficient algos.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>TV</title>
<style>
.pixel {
position: absolute;
width: 1px;
height: 1px;
background: red;
}
</style>
<script>
function circle(x, y, r, c, parent) {
var body = document.getElementsByTagName("body")[0];
for(var i = 0; i < 361; i++) {
var xp = x + Math.cos(i) * r;
var yp = x + Math.sin(i)*r;
var p = document.createElement("div");
p.className = "pixel";
p.style.left = xp + "px";
p.style.top = yp + "px";
if(c) p.style.background = c;
if(parent) {
parent.appendChild(p)
} else {
body.appendChild(p);
}
}
}
function init() {
circle(100, 100, 50, "green");
circle(100, 100, 40, "red");
circle(100, 100, 30, "blue");
circle(100, 100, 20, "orange");
circle(100, 100, 10, "black");
}
</script>
</head>
<body onload="init();">
</body>
</html>
Thank you, I used html5 canvas you can check it on: http://ayyash.info/dxp4.html
I need help to draw small balls and and use drag & drop feature and snap the balls to the borders of the balls.
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