Transformation Basics ............................................................. 3-2
Basic Procedure .................................................................. 3-2
Source Coordinate Frame and Target Coordinate
Frame ....................................................................... 3-4
Three-Dimensional Coordinates ......................................... 3-5
Specializing the Effect of the Trackball and Z-Ring .......... 3-7
Moving the Image ..................................................................... 3-9
Moving in the Source Coordinate Frame ........................... 3-9
Moving in the Target Coordinate Frame .......................... 3-11
Rotating the Image ................................................................. 3-13
Rotating in the Source Coordinate Frame ........................ 3-13
Rotating in the Target Coordinate Frame ......................... 3-15
Moving the Axes of Rotation ................................................. 3-17
Moving the Axes of Rotation in the Source Coordinate
Frame ..................................................................... 3-17
Moving the Axes of Rotation in the Target Coordinate
Frame ..................................................................... 3-19
Magnifying or Shrinking the Image ..................................... 3-21
Magnifying or Shrinking in the Source Coordinate
Frame ..................................................................... 3-21
Magnifying or Shrinking in the Target Coordinate
Frame ..................................................................... 3-22
Changing the Skew, Aspect Ratio or Perspective
of the Image ..................................................................... 3-23
Changing the Skew or Aspect Ratio of the Image ............ 3-23
Changing the Perspective of the Image ............................ 3-26
Setting the Number of Rotations (Spin Function) ............... 3-28
Chapter 3
Three-Dimensional
Transformations