static dFloat RayCastFilter (const NewtonBody* const body, const NewtonCollision* const collisionHit, const dFloat* const contact, const dFloat* const normal, dLong collisionID, void* const userData, dFloat intersetParam)
{
dFloat mass;
dFloat Ixx;
dFloat Iyy;
dFloat Izz;
// check if we are hitting a sub shape
const NewtonCollision* const parent = NewtonCollisionGetParentInstance(collisionHit);
if (parent) {
// you can use this to filter sub collision shapes.
dAssert (NewtonCollisionGetSubCollisionHandle (collisionHit));
}
dMousePickClass* const data = (dMousePickClass*) userData;
NewtonBodyGetMassMatrix (body, &mass, &Ixx, &Iyy, &Izz);
if ((mass > 0.0f) || (NewtonBodyGetType(body) == NEWTON_KINEMATIC_BODY)) {
data->m_body = body;
}
if (intersetParam < data->m_param) {
data->m_param = intersetParam;
data->m_normal = dVector (normal[0], normal[1], normal[2]);
}
return intersetParam;
}
static unsigned RayPrefilter (const NewtonBody* const body, const NewtonCollision* const collision, void* const userData)
{
// if the collision has a parent, the this can be it si a sub shape of a compound collision
const NewtonCollision* const parent = NewtonCollisionGetParentInstance(collision);
if (parent) {
// you can use this to filter sub collision shapes.
dAssert (NewtonCollisionGetSubCollisionHandle (collision));
}
return 1;
}
// implement a ray cast pre-filter
static unsigned RayCastPrefilter (const NewtonBody* body, const NewtonCollision* const collision, void* const userData)
{
// ray cannot pick trigger volumes
//return NewtonCollisionIsTriggerVolume(collision) ? 0 : 1;
const NewtonCollision* const parent = NewtonCollisionGetParentInstance(collision);
if (parent) {
// you can use this to filter sub collision shapes.
dAssert (NewtonCollisionGetSubCollisionHandle (collision));
}
return (NewtonBodyGetType(body) == NEWTON_DYNAMIC_BODY) ? 1 : 0;
}
static dFloat RayCastPlacement (const NewtonBody* const body, const NewtonCollision* const collisionHit, const dFloat* const contact, const dFloat* const normal, dLong collisionID, void* const userData, dFloat intersetParam)
{
// if the collision has a parent, the this can be it si a sub shape of a compound collision
const NewtonCollision* const parent = NewtonCollisionGetParentInstance(collisionHit);
if (parent) {
// you can use this to filter sub collision shapes.
dAssert (NewtonCollisionGetSubCollisionHandle (collisionHit));
}
dFloat* const paramPtr = (dFloat*)userData;
if (intersetParam < paramPtr[0]) {
paramPtr[0] = intersetParam;
}
return paramPtr[0];
}