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Texture#getFrameBounds is a new method that will return the bounds that all of the frames of a given Texture Source encompass. This is useful for things like calculating the bounds of a Sprite Sheet embedded within a Texture Atlas.

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Richard Davey 2024-02-20 23:53:26 +00:00
parent 085bfa0cac
commit 724ed7ec17
1 changed files with 53 additions and 0 deletions
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53
src/textures/Texture.js
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@ -316,6 +316,59 @@ var Texture = new Class({
return out;
},
/**
* Based on the given Texture Source Index, this method will get all of the Frames using
* that source and then work out the bounds that they encompass, returning them in an object.
*
* This is useful if this Texture is, for example, a sprite sheet within an Atlas, and you
* need to know the total bounds of the sprite sheet.
*
* @method Phaser.Textures.Texture#getFrameBounds
* @since 3.80.0
*
* @param {number} sourceIndex - The index of the TextureSource to get the Frame bounds from.
*
* @return {Phaser.Types.Math.RectangleLike} An object containing the bounds of the Frames using the given Texture Source Index.
*/
getFrameBounds: function (sourceIndex)
{
if (sourceIndex === undefined) { sourceIndex = 0; }
var frames = this.getFramesFromTextureSource(sourceIndex);
var minX = Infinity;
var minY = Infinity;
var maxX = 0;
var maxY = 0;
for (var i = 0; i < frames.length; i++)
{
var frame = frames[i];
if (frame.cutX < minX)
{
minX = frame.cutX;
}
if (frame.cutY < minY)
{
minY = frame.cutY;
}
if (frame.cutX + frame.cutWidth > maxX)
{
maxX = frame.cutX + frame.cutWidth;
}
if (frame.cutY + frame.cutHeight > maxY)
{
maxY = frame.cutY + frame.cutHeight;
}
}
return { x: minX, y: minY, width: maxX - minX, height: maxY - minY };
},
/**
* Returns an array with all of the names of the Frames in this Texture.
*