:scale( x, y ) Acts Weird (Seems To Be Cumulative)?

[JeZxLee]

@coruscans71

If you want to come back to a scale 1,1 you should call scale(0.2, 0.2) after scale(5, 5).

You can use object fields xScale and yScale to know the scale of an object. With them you can easily revert to scale 1,1 (or whatever scale you want).

Hi,

Thanks for the reply!

Is there some formula I can use to easily set the scale of and object back to (1, 1) --no scaling/original size?

object:scale( some formula, some other formula)

Thanks!

JeZxLee

[nick_sherman]

You can just do object.xScale = 1.

[roaminggamer]

obj:scale(...) -- is multiplicative

local circ = display.newCircle( 10, 10, 10 ) circ:scale(0.5,0.5) circ:scale(0.5,0.5)

is the same as:

local circ = display.newCircle( 10, 10, 10 ) circ.xScale = 0.25 circ.yScale = 0.25

[ldurniat]

From Corona documentation

Effectively multiplies the size of a display object by xScale and xScale respectively.

xScale  and xScale are arguments passed to scale function.

So @roaminggamer have right.

[JeZxLee]

Hi,

Got everything working now…

Thanks to all who have helped!

Here is the working code for the demo:

-- "main.lua" TextScale = 1 TextScaleDir = 1 local composer = require( "composer" ) composer.gotoScene( "sceneAnimatedTextTest" )

-- "sceneAnimatedTextTest.lua" local composer = require( "composer" ) local scene = composer.newScene() local displayText local displayTextScale -- ------------------------------------------------------------------------------------------------------------- function round(x, n) n = math.pow(10, n or 0) x = x \* n if x \>= 0 then x = math.floor(x + 0.5) else x = math.ceil(x - 0.5) end return x / n end -- ------------------------------------------------------------------------------------------------------------- function scene:create( event ) local sceneGroup = self.view TextScale = 1 TextScaleDir = 1 local myRectangle = display.newRect( display.contentCenterX, display.contentCenterY, display.contentWidth, display.contentHeight ) myRectangle.strokeWidth = 5 myRectangle:setFillColor( 0.5 ) myRectangle:setStrokeColor( 0, 1, 0 ) sceneGroup:insert( myRectangle ) displayText = display.newText( "Hello World", display.contentCenterX, display.contentCenterY, "Font01.ttf", 20 ) displayText:setFillColor( 0, 1, 0 ) sceneGroup:insert( displayText ) displayTextScale = display.newText( "", display.contentCenterX, 50, "Font01.ttf", 30 ) displayTextScale:setFillColor( 0, 0, 0 ) sceneGroup:insert( displayTextScale ) end -- ------------------------------------------------------------------------------------------------------------- function scene:show( event ) local sceneGroup = self.view local phase = event.phase if ( phase == "will" ) then elseif ( phase == "did" ) then local function onEveryFrame( event ) if TextScaleDir == 1 then if TextScale \< 5 then TextScale = TextScale + 0.01 TextScale = round( TextScale, 2 ) displayText.xScale = TextScale displayText.yScale = TextScale else TextScaleDir = 0 displayText.xScale = 5; displayText.yScale = 5; end elseif TextScaleDir == 0 then if TextScale \> 0.01 then TextScale = TextScale - 0.01 TextScale = round( TextScale, 2 ) displayText.xScale = TextScale displayText.yScale = TextScale else TextScaleDir = 1 displayText.xScale = 0.01; displayText.yScale = 0.01; end end displayTextScale.text = tostring( TextScale ) end Runtime:addEventListener( "enterFrame", onEveryFrame ) end end -- ------------------------------------------------------------------------------------------------------------- function scene:hide( event ) local sceneGroup = self.view local phase = event.phase if ( phase == "will" ) then elseif ( phase == "did" ) then end end -- ------------------------------------------------------------------------------------------------------------- function scene:destroy( event ) local sceneGroup = self.view end -- ------------------------------------------------------------------------------------------------------------- scene:addEventListener( "create", scene ) scene:addEventListener( "show", scene ) scene:addEventListener( "hide", scene ) scene:addEventListener( "destroy", scene ) -- ------------------------------------------------------------------------------------------------------------- return scene

Thanks!

JeZxLee