Celestia/Celx Scripting/CELX Lua Methods/CEL command center

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center[edit | edit source]

center { time <duration> }

Centers the currently selected object in the display in <duration> seconds. you must first use the select command to select an object to be centered.

Arguments:

time <duration>
Number of seconds to take centering the object. Default is 1.0 second.


CELX equivalent:

Based on the observer:center() method.

  • Find and select target object with name <string> to be centered and store in "objectname"
objectname = celestia:find( <string> )
  • Get observer instance of the active view and center objectname.
    If no <duration> is given, the default time = 5.0 seconds !!!
obs = celestia:getobserver()
obs:center(objectname, <duration> )
  • Wait <duration> seconds.
wait( <duration> )

Summarized:

objectname = celestia:find( <string> )
obs = celestia:getobserver()
obs:center(objectname, <duration> )
wait( <duration> )

Example:
The following example selects the Earth and takes 5.5 seconds to center it on the screen. If you do not see the Earth, press the [G] key on your keyboard and you should see the Earth zoom into view from the center of the display.

CEL:

select { object "Sol/Earth" }
center { time 5.5 }

CELX:

earth = celestia:find("Sol/Earth")
celestia:select(earth)
obs = celestia:getobserver()
obs:center(earth, 5.5)
wait(5.5)

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