Dynamic Viewing (Using the Mouse to Change Views)

"Dynamic" viewing is the name given to the process in which you perform viewing transformations by moving the mouse around the screen.

Dynamic Translation.

Dynamic translation uses <mid mouse> + <left shift>

The cursor symbol is yellow, and looks like:

The relationship between mouse and image motion is intuitive: the object tracks the mouse motion in the screen XY plane. The initial position of the mouse is irrelevant.

Dynamic Magnification (Scaling).

Dynamic scaling uses <right mouse> + <left shift>

The cursor symbol is green, and looks like:

Mouse motion to the right and up makes the image larger, left and down smaller. The initial position of the mouse is irrelevant. A horizontal movement will scale just the x-axis while a vertical movement will scale just the y-axis.