public Fixture(Body body, Shape shape, object userData)
{
if (Settings.UseFPECollisionCategories)
_collisionCategories = Category.All;
else
_collisionCategories = Category.Cat1;
_collidesWith = Category.All;
_collisionGroup = 0;
//Fixture defaults
Friction = 0.2f;
Restitution = 0;
IsSensor = false;
Body = body;
UserData = userData;
if (Settings.ConserveMemory)
Shape = shape;
else
Shape = shape.Clone();
RegisterFixture();
}