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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