• After a geometric model is constructed, it must be displayed (rendered).
• Rendering is mainly limited by computer hardware, and the geometric model.
• The main methods for doing computer graphics are,
- Wire Frame
- Wire frame with hidden line removal
- Polygon drawing (backface, and clipping)
- Shaded polygons
• As the scene becomes more complicated, the computing time becomes longer, but the picture becomes more realistic.
• The basic history of research on geometric modeling can be summarized as,
- 2D computer drafting - Mid 60s
- 2.5 D - Late 60s
- 3D Wire Frame Systems - Early 70s
- 3D Surface Systems - Mid 70s
- 3D Primitive Solids - Early to Mid 70s
- 3D Arbitrary Solids - Mid to Late 70s
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