GAViewer 0.43 manual (.pdf)

20 CHAPTER 3. .GEO AND .GPL FILES
3.14 eyerot, camrot
Rotates the eye/camera over a specified plane/angle per second during a specified
time. Syntax: Usage example:
camrot 10.0 [1.0*e1ˆe2]
The first argument is the duration, the second the rotation bivector. If the duration
is 0, the rotation in instantanious.
3.15 hide, show
Hides or shows a specified object (can be a label, algebra object, polygon, etc)
or user interface element.
Usage examples:
show "name of object"
hide "name of object"
The user interface elements that can affected by hide and show are:
• controls: object controls window.
• scalar controls: scalar controls window.
• console: the console.
3.16 remove
Removes the specified object. Usage example:
remove x
3.17 fade, fade and remove, fade and hide, show and fade
The keywords allow you to fade in and out objects. Before the fade, the object
can be shown (show and fade). After the fade is over, the object can be hidden
(fade and hide) or removed (fade and remove). The syntax is:
fade "object name" fade_duration fade_target fade_start
The first argument is the name of the object. The second argument is the duration
of the fade in seconds. The third argument is the target alpha of the fade.
The fourth, optional argument is the alpha at the start of the fade. Using fade
will not actually modify the alpha of the any of the colors of the object, but
rather multiplies those alpha values before they are sent to OpenGL.
Usage examples:
fade x 2.0 1.0
fade_and_remove y 1.0 0.0 1.0