Fit width scale mode question?

hnim · July 2012

hi everyone,
im using fit width scale mode in my project. when i change emulator resolution, it seems [top,left] move up a bit. Is this bug of feature? How long does it change?
thanks

ar2rsawseen · July 2012

It does exactly what it's supposed to. It fits width of screen by cropping or extending height of the screen. In your case height needs to be cropped.

You are probably looking for a letterbox scale mode

hnim · July 2012

thanks, but i want to keep my game full screen, so it seems letterbox is not good solution for me. So i try to calculate padding value to re-arrange my sprite on screen, but there is no luck

i supposed our game-view is center-align:

application:setOrientation(Application.LANDSCAPE_LEFT)
application:setBackgroundColor(0x66cc00)
-------------------------------------------
local deviceWidth = application:getDeviceWidth()
local deviceHeight = application:getDeviceHeight()
 
local SCREEN_WIDTH = application:getContentWidth()
local SCREEN_HEIGHT = application:getContentHeight()
 
local orientation = application:getOrientation()
if orientation == Application.LANDSCAPE_LEFT or orientation==Application.LANDSCAPE_RIGHT then
	local t = deviceWidth
	deviceWidth = deviceHeight
	deviceHeight = t
end
 
local topPadding = -(deviceHeight - (deviceWidth/SCREEN_WIDTH)*SCREEN_HEIGHT)/2
 
local circleTx = Texture.new("circle.png", true)
 
local circle1 = Bitmap.new(circleTx)
circle1:setPosition(0, topPadding)
stage:addChild(circle1)

any suggest?
thanks a lot

ar2rsawseen · July 2012

I suppose what you don't like at letterbox is the offset, but well this is how it goes, if you do not want to stretch image to cover whole screen, then you either crop longest sides or make offsets for shorter ones.

In my projects I use "letterbox" scaling mode together with absolute positioning to fill in the blanks:

http://appcodingeasy.com/Gideros-Mobile/Ignore-Automatic-Screen-Scaling-when-positioning-objects

atilim · July 2012

@ar2rsawseen, I realized that my formulation is a little bit different then yours:

local ltx = application:getLogicalTranslateX()
local lty = application:getLogicalTranslateY()
local lsx = application:getLogicalScaleX()
local lsy = application:getLogicalScaleY()
local dw = application:getDeviceWidth()
local dh = application:getDeviceHeight()
local orientation = application:getOrientation()
 
if orientation == Application.LANDSCAPE_LEFT or orientation == Application.LANDSCAPE_RIGHT then
	dw,dh = dh,dw
end
 
-- top left
local startx = -ltx / lsx
local starty = -lty / lsy
 
-- bottom right
local endx = (dw - ltx) / lsx
local endy = (dh - lty) / lsy

Because in "no scale" mode, logical dimensions (and hence content dimensions) are not used and therefore I need to use device dimensions to do the calculations.

anyway, mine and yours are identical for all scaling modes except "no scale".

ar2rsawseen · July 2012

actually @atilim, what you call my formulation, is actually your formulation

Yeah, I was thinking about compliance with no scaling, but since I'm always using letterbox mode it worked perfectly and is much shorter

atilim · July 2012

ohh really

and letterbox is also my favorite (and sometimes fit width/fit height)

Howdy, Stranger!

Categories

In this Discussion

Top Posters

Fit width scale mode question?

Comments

Howdy, Stranger!

Quick Links

Categories

In this Discussion

Top Posters

Fit width scale mode question?

Comments