Computer Graphics

Lecture 10

H&B Chapter 9 - 3D Display Methods

Synthetic Camera Model

• Position and orientation
• Angle of View
• Depth of Field

Projection Methods

• Parallel

Perspective

Depth Cueing

Visible Line and Surface Identification

Surface Rendering

Wireframe => Surface Rendering => Light, Texture, etc.

Exploded View

Cutaway View

3D and Stereoscopic Views

Rendering Pipeline

3D Object Representations

· Coordinates => (x,y,z) ( r , q , j )

· Lines

· Polygons

o Polygon Mesh

Pen and ink drawing of a wireframe chalice ("Perspective Study of a Chalice")

Paolo Uccello (1430-1440), Florence, Italy.

www.cs.unc.edu/~isenburg/research/ facefixer/pics/shark.html

· Surfaces

Parametric surfaces (e.g. Bezier Surface)

Utah Teapot – 23 Bezier surface patches

Bezier surface patch with 16 control points

· Volumes