Scaling pictures to fit in screen

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Corno_1

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Posted: 8th Oct 2015 12:47 Edited at: 8th Oct 2015 12:49

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Hi,

I bought AppGameKit 2 through a steam sale and I really liked it. I programmend some apps for me, but now I have a problem:

I want that the pictures fit in the device screen, but if the picture is wider than heigh it scales the picture to 1366/454. The display screen is 1366/768.
The methode also center it

Here is the code:

+ Code Snippet

function resizeToFit(image)
	resizeComplete=0
	while resizeComplete=0
		if GetSpriteWidth(image)>GetDeviceWidth() or GetSpriteHeight(image)>GetDeviceHeight() 
			SetSpriteSize(image,GetSpriteWidth(image)-1,GetSpriteHeight(image)-1)
		else
			resizeComplete=1
		endif
	endwhile
	SetSpritePosition(image,GetDeviceWidth()/2-(GetSpriteWidth(image)/2),GetDeviceHeight()/2-(GetSpriteHeight(image)/2))
endfunction

Any help is aprreciated

Corno_1

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Corno_1

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Posted: 8th Oct 2015 13:35

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Ok, solution found!

+ Code Snippet

function resizeToFit(image)
	resizeComplete=0
	while resizeComplete=0
		resizeComplete=1
		if GetSpriteWidth(image)>GetDeviceWidth() or GetSpriteHeight(image)>GetDeviceHeight()
			SetSpriteSize(image,GetSpriteWidth(image)-GetSpriteWidth(image)/1000,GetSpriteHeight(image)-GetSpriteHeight(image)/1000)
			resizeComplete=0
		endif
	endwhile
	SetSpritePosition(image,GetDeviceWidth()/2-(GetSpriteWidth(image)/2),GetDeviceHeight()/2-(GetSpriteHeight(image)/2))
endfunction

Sometimes you must rethink your hole concept to find your mistake

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Crazy Programmer

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Posted: 8th Oct 2015 13:39

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All you must do is set the sprite size the display width and height.

DeviceWidth# = GetDeviceWidth()
DeviceHeight# = GetDeviceHeight()

SetSpriteSize(Sprite,DeviceWidth#,DeviceHeight#)

SetSpritePosition(image,GetDeviceWidth()/2-(GetSpriteWidth(image)/2),GetDeviceHeight()/2-(GetSpriteHeight(image)/2)) <-----You do not need this.
You do not need this because the positioning does not start at the middle of your sprite which you would suspect.
The positioning starts from the Top-Left corner of your sprite. So if you size your sprite to the screen specs it will fill the screen with out having to be positioned.

If you wish to fix it to the screen, if you are using it as a background.
FixSpriteToScreen(Sprite,1)

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CJB

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Posted: 8th Oct 2015 15:54

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Also, if it is a full-screen background image, probably worth taking a look at SetSpriteTransparency too. (Turn off transparancy on background image to improve preformance).

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Markus

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Posted: 8th Oct 2015 21:08 Edited at: 8th Oct 2015 21:09

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better use
GetVirtualWidth ()
GetVirtualHeight ()
at SetSpriteSize( iSpriteIndex, width, height ) u can set width or height to -1 for 1:1 pixel aspect.

AGK (Steam) V2 Beta .. : Windows 10 Pro 64 Bit : AMD (15.7.1) Radeon R7 265 : Mac mini OS X 10.10 (Yosemite)

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Corno_1

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Posted: 11th Oct 2015 16:51

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Maybe there is a missunderstanding. The picture should fit into the screen without any changes at the shape. If I use

DeviceWidth# = GetDeviceWidth()
DeviceHeight# = GetDeviceHeight()
SetSpriteSize(Sprite,DeviceWidth#,DeviceHeight#)

the picture become stretched. This should not be. But thanks for all your answers.

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Markus

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Posted: 11th Oct 2015 18:05 Edited at: 11th Oct 2015 18:08

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if u use a 100:100 aspect ratio because (virtual) resolution of 100x100 and a 16:9 screen, sure it will be stretched.
then u can use
DeviceWidth# = GetDeviceWidth()
DeviceHeight# = GetDeviceHeight()
SetSpriteSize(Sprite,-1,DeviceHeight#)
or
SetSpriteSize(Sprite,DeviceWidth#,-1)
if u not want borders the image should be a square.
u can position it in the middle screen SetSpritePositionByOffset ( iSpriteIndex, GetDeviceWidth()/2.0, GetDeviceHeight()/2.0)

also look for SetScissor( 0,0,0,0) and
GetScreenBoundsBottom ()
GetScreenBoundsLeft ()
GetScreenBoundsRight ()
GetScreenBoundsTop ()

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