Implementing Newton Physics

[Guest]

I`m trying to get Newtonworking in Irrlicht and I am having trouble understanding how objects in 3d space and object in newtons space are linked together.
Iknow you have to write a callback function but I dont understand how data from newton is applied to the object in Irrlicht. Please help

[mauzi the Dude]

using newton and irrlicht together your class will have: ISceneNode, IMesh, NewtonCollision and a NewtonBody. To apply the physic calculations from newton to your irrlicht objects use the SetMeshTransformEvent callback someway like this

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SetMeshTransformEvent(const NewtonBody* body, const float* matrix) 
{
...
NewtonBodyGetMatrix(body, &matrix); // get matrix from  
calculate the  matrix for rendering (adopt unitscale, offset, camerapos, etc)
sceneNode->setPosition(matrix.getTranslantion()); //apply renderposition 
... 
}

helper constants

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const float NewtonToIrrlicht = 32.0f;
const float IrrlichtToNewton = (1.0f / NewtonToIrrlicht);