2009

The Fracture helper object simulates the breaking of a rigid body into a number
of smaller pieces as the result of an impact. To do this, you need to supply the
pieces that are glued together to create the whole object. This is known as
"pre-fracturing." reactor does not break the pieces you supply into smaller
pieces.
TIP An excellent tool for pre-fracturing your objects is the ProCutter compound
object
on page 862.
Rigid bodies that are part of a Fracture helper move together as a single body.
When a rigid body that belongs to a Fracture helper collides with another
body, the collision information is analyzed and if a threshold is exceeded, the
rigid body is removed from the fracture helper. Once the rigid body has been
removed, it moves independently of the fracture object and is free to collide
with the rigid bodies that are still part of the fracture object. This can often
result in a chain reaction of pieces breaking off.
You can optionally enable the use of connectivity. Connectivity analyzes the
bodies belonging to the Fracture helper to find bodies that are in contact with
each other before simulation occurs. This builds up an internal graph of which
bodies are connected to which other bodies. Thus groups of rigid bodies that
are connected to each other, but disconnected with other bodies in the fracture
reactor Objects | 4011