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ctx-polyfill
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Tested on EDGE, CHROME, FIREFOX, OPERA and IE 10+.
[INFOS] The CanvasRenderingContext2D specs are not finished for some methods and may change in future.
npm i ctx-polyfill --save
Stable: arc, arcTo, bezierCurveTo, closePath, ellipse, lineTo, moveTo, quadraticCurveTo, rect.
Experimental: addPath. For size reasons, Path2D polyfill does'nt support SVG path (used as argument in constructor).
Because the specs are not finished, the currentTransform
or even Path2D.addPath
originally used SVGMatrix which have been deprecated. Instead, use an Array[6].
If you need SVGMatrix, some hacks have been implemented :
CanvasRenderingContext2D.useSvgMatrix: boolean;
By setting CanvasRenderingContext2D.useSvgMatrix
to true, currentTransform
will return SVGMatrix instead of array.
CanvasRenderingContext2D.arrayToSVGMatrix(array: number[]): SVGMatrix;
Convert the array transform matrix into a SVGMatrix.
CanvasRenderingContext2D.svgMatrixToArray(matrix: SVGMatrix): number[];
Convert a SVGMatrix into a transform matrix array.
FAQs
Polyfill CanvasRenderingContext2D and Path2D (currentTransform, resetTransform, imageSmoothingEnabled, etc...)
The npm package ctx-polyfill receives a total of 27,538 weekly downloads. As such, ctx-polyfill popularity was classified as popular.
We found that ctx-polyfill demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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