predefined print/asString methods for celx objects ?

[Rjp buisson]

I am quite new to Celestia +Lua programming but I know Object language programming.
I first need lot of testing on methods availables in Celx
Is there a default method available offering a sort of 'asString' functionality:
I mean a method returning a string containing the values of the members of any instance of common objets of Celestia, which could then be printed on screen:
for exemple:
earth.getposition() asString
number asString
vector asString
observer.getposition() asString
frame asString ???
Thanks

[Harry]

Is there a default method available offering a sort of 'asString' functionality:

No, this is not available. There is a "tostring( )" function, which will return a string for the various objects, but the string will only give the type of object (like "[observer]" etc.).

Harald

[don]

Hi Rjp,

Welcome to Celestia scripting!

earth.getposition() asString
number asString
vector asString
observer.getposition() asString
frame asString ???

"number asString" could use the Lua function "tostring(number)". The "string.format (formatstring, number1, number2, ...)" function provides more control over formatting a number for display.

The type(var) function returns the type of variable (userdata, string, number, etc.).

To obtain the XYZ values for a vector or position object, you can use the Celx getx(), gety(), and getz() methods for each.

Hope this helps.