Visibility

Visibility Determination

  • object-precision: interdependencies in scene
  • image-precision: consider pixels
  • mixed: use advantages of both

Object-Precision

Painter's Algorithm

  • back-to-front rendering
  • Sortierung schwierig, daher braucht man optimierungen

Space Partitioning

  • Octree
  • BSP

Culling

  • Back-Face Culling
  • View-Frustum Culling
  • Bounding-Box Hierarchies
  • Visual Occluders
  • Cell Visibility

Image-Precision

Area Subdivision

Z-Buffer

  • Hidden Line Removal kann man damit auch machen.

Mixed Techniques

Scan-Line Approach

Ray Casting

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