Difference between revisions of "gc:setAlpha"
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Sets how transparent the next graphical things displayed will be. | Sets how transparent the next graphical things displayed will be. | ||
| − | <br />{{Since|3.0}}{{Undocumented}} | + | <br />{{Since|3.0}} |
| + | {{Undocumented}} | ||
==Syntax== | ==Syntax== | ||
| Line 17: | Line 18: | ||
== Example == | == Example == | ||
| − | <syntaxhighlight>gc:setAlpha(0) -- will be invisible | + | <syntaxhighlight>function on.paint(gc) |
| − | gc:setAlpha(127) -- will be half-visible | + | gc:setAlpha(0) |
| − | gc:setAlpha(255) -- will be fully-visible</syntaxhighlight> | + | gc:drawString("hello",10,10,"top") -- will be invisible |
| + | gc:setAlpha(127) | ||
| + | gc:drawString("hello",50,50,"top") -- will be half-visible | ||
| + | gc:setAlpha(255) | ||
| + | gc:drawString("hello",100,100,"top") -- will be fully-visible | ||
| + | end</syntaxhighlight> | ||
<br /><br /> | <br /><br /> | ||
[[Category:gc]] | [[Category:gc]] | ||
[[Category:Undocumented/Unofficial]] | [[Category:Undocumented/Unofficial]] | ||
Latest revision as of 22:48, 7 December 2011
setAlpha is a function that is part of gc.
Sets how transparent the next graphical things displayed will be.
This has been introduced in TI-Nspire OS 3.0 (Changes).
Will probably not exist/work on future versions, since this is Undocumented/Unofficial !
Syntax
gc:setAlpha(alpha)
| Parameter | Type | Description |
|---|---|---|
| number | an integer, from 0 to 255 |
Example
function on.paint(gc)
gc:setAlpha(0)
gc:drawString("hello",10,10,"top") -- will be invisible
gc:setAlpha(127)
gc:drawString("hello",50,50,"top") -- will be half-visible
gc:setAlpha(255)
gc:drawString("hello",100,100,"top") -- will be fully-visible
end
