[ODE] Some objects pass through other objects

[Keith Wiley]

Followup.  I have determined that this bug has nothing to do with the  
canonball being near the ground (that's why it occurs later in the  
launch cycle as well as near the ground.  I have determined that  
dCollide is failing to find the collision, so the canonball falls  
through the pendulum.  I put in code that colors the canonball  
differently depending on whether a collision is found between it and  
any part of the trebuchet.  This helps me easily visualize when  
collisions are detected and when they are not.  dCollide simply fails  
to discover collisions between the canonball and the composited  
trebuchet body most of the time.  Sometimes it finds the collision,  
but most of the time it doesn't, especially when both bodies settle  
down and stop moving around relative to one another.

Does this offer any insight into what is going wrong or what I can do  
about it?

________________________________________________________________________
Keith Wiley         kwiley at cs.unm.edu         http://www.unm.edu/~keithw

"I do not feel obliged to believe that the same God who has endowed us
with sense, reason, and intellect has intended us to forgo their use."
                                            --  Galileo Galilei
________________________________________________________________________