First draft interface has been done

This week, after 4 hours work on drawing a draft interface for Knot_A_Problem software, our first draft interface has been done. Thanks very much for Allen's help on this work!

So far the desired operations provided are ---

Creat new knot

Save a knot file

Open a knot file

Undo

Redo

Select a point on the string and move it

Delete a point

Add a point

Lock\Unlock a point to be fixed

Rotate the view camera

Move the view camera

Enlarge a view window

Get back to 4 viewport mode

Zoom out

Zoom in

Select colors

Play the animaiton of drawing a knot

Stop palying

Print

Print preview

Submit a knot onto online database server.

The left side of the interface is a tree view that shows knots fetched from online database server.

I think the menu should be elaborated. It's now far away from sophisticated. It's good for all of our group member to have a brainstorm on it tomorrow.