NewtonCollisionCollide and contact points.

[Crashy]

Hello, I'm new to Newton, and I'm using it for collision detection only. I'm currently doing my own collision response code, and I cannot understand what position is given by the "contacts" array parameter of the NewtonCollisionCollide function.

It seems to be a local space position, but I cannot see if it is for collision A or B. But maybe I'm totally wrong. I really need to know the position of the contact if I want to compute a proper torque for the collision response.

By the way, is there any sample on how to do simple collision response using NewtonCollisionCollide?

Thank you:)

[JernejL]

The positions are for collision pair of the 2 objects.. NOT for one object.. what you wrote makes no sense, a collision happens between 2 objects, the response is a result of 2 objects colliding.

[Crashy]

he positions are for collision pair of the 2 objects.. NOT for one object

Yes, I agree, but I've seen many collision detection code before that is returning a contact point in the local space of, for exemple, the first collision object in the teted pair, that's what I wanted to say.

For example, NewtonCollisionClosestPoint gives the contact points for collisionA and collisionB separately.

[JernejL]

Interesting, i gues it works on A against B so it would be for a.. i guess you will have to test and report so i can add the info to wiki.

[Crashy]

Ok there was a bug on my side, now I can tell you that it is a position in world space

This info should be a great addition to the wiki yes. Thank you, Newton is Awesome