Breaking Stuff

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Breaking Stuff

• Dynamic Destruction

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Dynamic Destruction

• Assigning material properties to rigid bodies
• Object break, bend, spindle and mutilate uniquely
• Similar principle to constrained dynamics

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Tools For Destruction

• 3D tessellation
• Creating constraints
• Material properties
• Offline processing

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3D Tessellation

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

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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

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Dynamic Destruction
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Dynamic Destruction
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Dynamic Destruction
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Dynamic Destruction
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Dynamic Destruction
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Dynamic Destruction
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Dynamic Destruction
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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

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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

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Dynamic Destruction

• Demos
• Destructo-Bunny
• Crash2 Pseudo Interactive, E3 Demo, May 2004

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Dynamic Destruction

• Reckless destruction of tofu