Introduction
In this article, we are going to have a very interesting section related to designing. In this, the pointer has a radius of 60 and appears to spin while you run the application in the browser.
Here we will use some JavaScript and some styles along with HTML code. Just go through the steps to see how to create this application.
Let's see how the Spinningpoints application can be created. To do so go through the following steps.
Step 1 : Open a HTML editor or Visual Studio.
Open File menu ->select new ->Choose Website then.
- Go to Solution Explorer
- Right-click on the Application name
- Select Add-->add new item
- Now in the window that opens, select an HTML page or a new Webform
- Rename it to Spinningpoint.aspx
Here two CSS files are used for design purposes; one is for the section div, named d1.css and the other d2.css for the whole body of the web page as added in the Spinningpoints.rar file. Here is the media script.
Script for the Media screen
- <style media="screen">
- html
- {
- height: 100%;
- }
- body
- {
- color: #222;
- font: 20px/1.4 "Lucida Grande" , Lucida, Verdana, Helvetica, sans-serif;
- height: 100%;
- }
- #holder
- {
- height: 300px;
- left: 0;
- overflow: hidden;
- position: absolute;
- top: 0;
- width: 300px;
- margin: 0;
- }
- #form
- {
- height: 300px;
- left: 50%;
- margin: -150px 0 0 -300px;
- overflow: hidden;
- position: absolute;
- top: 50%;
- width: 600px;
- }
- form
- {
- color: #fff;
- left: 300px;
- margin: 0;
- padding: 0;
- position: absolute;
- top: 0;
- width: 300px;
- }
- dt
- {
- clear: left;
- float: left;
- height: 2em;
- width: 150px;
- }
- dd
- {
- float: left;
- height: 2em;
- margin: 0;
- padding: 0;
- }
- input
- {
- font-size: 1em;
- width: 4em;
- }
- p
- {
- font: italic 20px/1.4 "Hoefler Text" , Georgia, serif;
- height: 100%;
- margin: -3em;
- width: 750px;
- }
- #copy
- {
- bottom: auto;
- color: #fff;
- font-size: .5em;
- right: 4em;
- top: 300px;
- }
- </style>
Step 3 : In this part we need to work on some JavaScript. For fully understanding how the JavaScript works, download the attached .rar file and run the Spinningpoints application.
The whole JavaScript looks as in the following
- window.onload = function ()
- {
- var remove = spinner("holder", 70, 120, 12, 25, "#fff");
- var form =
- {
- form: document.getElementsByTagName("form")[0],
- r1: document.getElementById("radius1"),
- r2: document.getElementById("radius2")
- };
- form.form.onsubmit = function ()
- {
- remove();
- remove = spinner("holder", +form.r1.value, +form.r2.value);
- return false;
- };
- };
- function spinner(holderid, R1, R2, count, stroke_width, colour)
- {
- var sectorsCount = count || 12,
- color = colour || "#fff",
- width = stroke_width || 15,
- r1 = Math.min(R1, R2) || 35,
- r2 = Math.max(R1, R2) || 60,
- sectors = [],
- opacity = [],
- beta = 2 * Math.PI / sectorsCount,
- pathParams = { stroke: color, "stroke-width": width, "stroke-linecap": "round" };
- }
- var tick;
- (function ticker()
- {
- opacity.unshift(opacity.pop());
- for (var i = 0; i < sectorsCount; i++)
- {
- sectors[i].attr("opacity", opacity[i]);
- }
- tick = setTimeout(ticker, 1000 / sectorsCount);
- })();
- return function ()
- {
- clearTimeout(tick);
- r.remove();
- };
- }
Vijay PrativadiPosted Feb 20, 2012, 4:14 AM
Good One Deepak!!! Keep Posting More