Destruction

							Breaking Stuff

   Dynamic Destruction
Dynamic Destruction

 Assigning material properties to rigid
  bodies
 Object break, bend, spindle and
  mutilate uniquely
 Similar principle to constrained
  dynamics
Tools For Destruction

 3D tessellation
 Creating constraints
 Material properties
 Offline processing
3D Tessellation

 Uses entire volume of object
 Tessellate into tetrahedrons (3D
  version of creating a triangle mesh)
Creating Constraints

 Spring connection between (non-
  rendered) vertices
 Particles displaced within spring
  limitations return to constrained
  position
 Particles that move further “break”
  the constraint
 Split in center and form two new
  virtual vertices
Dynamic Destruction
Dynamic Destruction
Dynamic Destruction
Dynamic Destruction
Dynamic Destruction
Dynamic Destruction
Dynamic Destruction
Material Properties

   Analogous to tensile and compressive
    strength
   Additional properties add a more realistic
    effect
   Strain and strain rate tensors
   Elastic and plastic strain components
   Penalty methods on forces based on particle
    depth
Retessellating

 Breaking a solid object can result in
  creation of new surface polygon
 Pieces have to be retesselated and
  retextured
 New chunks are also new rigid bodies
  in the system
Dynamic Destruction

 Demos:
 Destructo-Bunny
 Crash2 Pseudo Interactive, E3 Demo,
  May 2004
Dynamic Destruction

   Reckless destruction of tofu