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cache svg renderer size and view offset

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This commit is contained in:
Michael "Z" Goddard
2019-06-05 10:06:37 -04:00
parent f9b1a04d1a
commit 24b535eb76
1 changed files with 28 additions and 10 deletions
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38
src/SVGSkin.js
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@@ -30,6 +30,24 @@ class SVGSkin extends Skin {
/** @type {Number} */
this._maxTextureScale = 0;
/**
* The natural size, in Scratch units, of this skin.
* @type {Array<number>}
*/
this.size = [0, 0];
/**
* The viewbox offset of the svg.
* @type {Array<number>}
*/
this._viewOffset = [0, 0];
/**
* The rotation center before offset by _viewOffset.
* @type {Array<number>}
*/
this._rawRotationCenter = [NaN, NaN];
}
/**
@@ -43,21 +61,17 @@ class SVGSkin extends Skin {
super.dispose();
}
/**
* @return {Array<number>} the natural size, in Scratch units, of this skin.
*/
get size () {
return this._svgRenderer.size;
}
/**
* Set the origin, in object space, about which this Skin should rotate.
* @param {number} x - The x coordinate of the new rotation center.
* @param {number} y - The y coordinate of the new rotation center.
*/
setRotationCenter (x, y) {
const viewOffset = this._svgRenderer.viewOffset;
super.setRotationCenter(x - viewOffset[0], y - viewOffset[1]);
if (x !== this._rawRotationCenter[0] || y !== this._rawRotationCenter[1]) {
this._rawRotationCenter[0] = x;
this._rawRotationCenter[1] = y;
super.setRotationCenter(x - this._viewOffset[0], y - this._viewOffset[1]);
}
}
/**
@@ -134,7 +148,11 @@ class SVGSkin extends Skin {
}
if (typeof rotationCenter === 'undefined') rotationCenter = this.calculateRotationCenter();
this.setRotationCenter.apply(this, rotationCenter);
this.size = this._svgRenderer.size;
this._viewOffset = this._svgRenderer.viewOffset;
// Reset rawRotationCenter when we update viewOffset.
this._rawRotationCenter = [NaN, NaN];
this.setRotationCenter(rotationCenter[0], rotationCenter[1]);
this.emit(Skin.Events.WasAltered);
});
}