Resizing images on the fly?

___ · August 2012

I must be missing something small here, but how do I set an image's width and height, so that it's scaled to that width and height?

And how efficient would this probably be if I make the width, height increase/decrease by a pixel, on each enterFrame?

ar2rsawseen · August 2012

Something like this should work:

function Bitmap:setDimensions(width, height)
    self:setScale(width/self:getWidth(), height/self:getHeight())
end

And I'd better use GTween for resize animation, much easier and cleaner, and lots of additional options

GregBUG · August 2012

Sprite:setScale()
Sprite:setScaleX()
Sprite:setScaleY()

but the use percentage value no pixels

so
Sprite:setScale(1.2) will bew Width*1.2and Height*1.2

they are fast!

___ · August 2012

@ar2rsawseen

Thanks!

I don't actually know how long to resize, it would be based on touch. I don't suppose GTween will be more efficient than a simple width++, height++?

ar2rsawseen · August 2012

@___
Then yes, it would probably be better to use onEnterFrame event. But you probably would not want to increase size on every enter frame, but control resize speed using some kind of a count variable, and only when it reaches a certain amount reset it to 0 and add a bit to the size of the image.

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