Cad implementation using the Javascript based topology library

Today I had some time and I decided to resurrect and update one sample page on how to use the topology Javascript library (codenamed tougo) I developed a couple of years ago.

The sample demonstrates some basic functions of a simple drawing app. You have the option to draw circles, boxes, triangles and lines. Originally I called it a Cad app cause you had the option edit the drawing and to export it to a dxf file.

The export option in this sample is deactivated (although the sample does includes the Javascript code to do so).

I may add a couple more features in due time.

enjoy the sample page and feel free to pop a question. Btw it only works on webkit browsers due to mozilla html5 canvas incompatibilities

UPDATE:  I updated my code to the latest version where I have solved the mozilla html5 canvas incompatibilities, so now it works,  just fine, on both browsers.