phaser/src/geom/rectangle/FitInside.js

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var GetAspectRatio = require('./GetAspectRatio');
// Fits the target rectangle into the source rectangle.
// Preserves aspect ratio.
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// Scales and centers the target rectangle to the source rectangle
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/**
* [description]
*
* @function Phaser.Geom.Rectangle.FitInside
* @since 3.0.0
*
* @param {Phaser.Geom.Rectangle} target - [description]
* @param {Phaser.Geom.Rectangle} source - [description]
*
* @return {Phaser.Geom.Rectangle} [description]
*/
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var FitInside = function (target, source)
{
var ratio = GetAspectRatio(target);
if (ratio < GetAspectRatio(source))
{
// Taller than Wide
target.setSize(source.height * ratio, source.height);
}
else
{
// Wider than Tall
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target.setSize(source.width, source.width / ratio);
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}
return target.setPosition(
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source.centerX - (target.width / 2),
source.centerY - (target.height / 2)
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);
};
module.exports = FitInside;