Interactive room size estimation too for tile website

Avg Bid (USD)
Project Budget (USD)
$250 - $750

Project Description:
We would like to create a room size estimator that uses a grid based drag and select interface to determine room size. If possible, we'd like this completed with html5 so it will work across platforms.

An example of a similar site (built in flash and about 5 yrs old) can be found here: [url removed, login to view]

We would like to improve upon this tool using modern tools and design. Please include examples of similar projects you have completed in your bid and an estimated delivery timeline.

Additional Project Description:
04/30/2013 at 22:04 IST
Please take a minute to click into the example site to see an example of the kind of interaction we are looking for. The end user should be able to arrive at their estimated room size (in sq. ft.) by clicking and dragging the outer "walls" on on a room shape grid.
Key features:
:: ability to choose custom room shape through addition of free form room borders - ie adding curves, right angle corners and sub right angel corners and click and drag interface
:: calculate room flooring size based on grid calculation (A) sq. ft
:: choose any area within flooring space that won't be included in calculation (B) sq. ft
:: calculate (C) final flooring area (A)-(B) = (C) sq. ft.
:: ability to calculate (F) flooring material required (C)*1.10 = (F) sq. ft
:: ability to calculate underlay requirement =(F) (Rounded up to the nearest 50 sq. ft)

Skills required:
Graphic Design, HTML, HTML5, PHP, Website Design
About the employer:
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