Structure of first prototype

XFRONT: single-user building fly-through

MB_XFRONT: run two concurrent copies of the fly-through

• one on each Pixel Planes graphics engine

  
  

• each copy exchanges messages over net with the other

  • eyepoint transformation matrix

  • message rate is variable

  
  

• each process uses its local building model

  • technically, there is no "shared" model, only the illusion created with local copies

MB_XFRONT requires minimal modifications to XFRONT

• Two identical processes communicating ... world models are inherently compatible