Difference between revisions of "love.window.toPixels"
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Converts a number from density-independent units to pixels. | Converts a number from density-independent units to pixels. | ||
| − | + | The pixel density inside the window might be greater (or smaller) than the "size" of the window. For example on a retina screen in Mac OS X with the <code>highdpi</code> [[love.window.setMode|window flag]] enabled, the window may take up the same physical size as an 800x600 window, but the area inside the window uses 1600x1200 pixels. <code>love.window.toPixels(800)</code> would return <code>1600</code> in that case. | |
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| + | This function can be used to convert coordinates from the size users are expecting them to display at onscreen to pixels. [[love.window.fromPixels]] does the opposite. The <code>highdpi</code> window flag must be enabled to use the full pixel density of the screen on Mac OS X and iOS. It is not currently supported on Windows and Linux, and on Android it is effectively always enabled. | ||
Most LÖVE functions return values and expect arguments in terms of pixels rather than density-independent units. | Most LÖVE functions return values and expect arguments in terms of pixels rather than density-independent units. | ||
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== Notes == | == Notes == | ||
| − | The units of [[love.graphics.getWidth]], [[love.graphics.getHeight]], [[love.mouse.getPosition]], and | + | The units of [[love.graphics.getWidth]], [[love.graphics.getHeight]], [[love.mouse.getPosition]], mouse events, [[love.touch.getPosition|touch positions]], and touch events are always in terms of pixels. |
== See Also == | == See Also == | ||
Revision as of 18:18, 25 November 2015
| Available since LÖVE 0.9.2 |
| This function is not supported in earlier versions. |
Converts a number from density-independent units to pixels.
The pixel density inside the window might be greater (or smaller) than the "size" of the window. For example on a retina screen in Mac OS X with the highdpi window flag enabled, the window may take up the same physical size as an 800x600 window, but the area inside the window uses 1600x1200 pixels. love.window.toPixels(800) would return 1600 in that case.
This function can be used to convert coordinates from the size users are expecting them to display at onscreen to pixels. love.window.fromPixels does the opposite. The highdpi window flag must be enabled to use the full pixel density of the screen on Mac OS X and iOS. It is not currently supported on Windows and Linux, and on Android it is effectively always enabled.
Most LÖVE functions return values and expect arguments in terms of pixels rather than density-independent units.
Contents
Function
Synopsis
pixelvalue = love.window.toPixels( value )
Arguments
number value- A number in density-independent units to convert to pixels.
Returns
number pixelvalue- The converted number, in pixels.
Function
Synopsis
px, py = love.window.toPixels( x, y )
Arguments
number x- The x-axis value of a coordinate in density-independent units to convert to pixels.
number y- The y-axis value of a coordinate in density-independent units to convert to pixels.
Returns
number px- The converted x-axis value of the coordinate, in pixels.
number py- The converted y-axis value of the coordinate, in pixels.
Notes
The units of love.graphics.getWidth, love.graphics.getHeight, love.mouse.getPosition, mouse events, touch positions, and touch events are always in terms of pixels.
See Also
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