CLIPPING OPERATIONS

Any procedure that identifies those portions of a picture that is either inside or outside of a specified region of space

1.      Applied in World Coordinates

2.      Adapting Primitive Types

–Point

–Line

–Area (or Polygons)

–Curve, Text

Point Clipping:

1.      Assuming that the clip window is a rectangle in standard position

2.      Saving a point P=(x, y) for display

xw_min <=x<=xw_max

yw_min <=y<=yw_max

3.      Appling Fields  - Particles (explosion, sea foam)