What is the contact point model of sketchyphysics?

[youthreewire]

I want to know what is the contact point model of sketchyphysics? As sketchyphysics is made on Newton dynamics engine I want to know about the contact point model of the same...

[youthreewire]

Could someone please help me by answering the question?

[pilou]

Have you an image of what you want to know ?
When a circle must to be contacted with a rectangle ?...

Now better is to use MS Physics...
A complete tutorial is here

Edit sorry if you want just direct coding ... ask Anton for that...

[youthreewire]

I want to read the collision force from MSphysics when two bodies collide and send it to my C code. So two parts to my questions
1)How do I read collision force in the MSphysics ruby code?
2)How do I send these read values back to my C code.