22 lines
1.2 KiB
JavaScript
22 lines
1.2 KiB
JavaScript
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import { env } from '../env';
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import { createCanvas, createCanvasFromMedia } from './createCanvas';
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import { getContext2dOrThrow } from './getContext2dOrThrow';
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import { getMediaDimensions } from './getMediaDimensions';
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export function imageToSquare(input, inputSize, centerImage = false) {
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const { Image, Canvas } = env.getEnv();
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if (!(input instanceof Image || input instanceof Canvas)) {
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throw new Error('imageToSquare - expected arg0 to be HTMLImageElement | HTMLCanvasElement');
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}
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const dims = getMediaDimensions(input);
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const scale = inputSize / Math.max(dims.height, dims.width);
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const width = scale * dims.width;
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const height = scale * dims.height;
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const targetCanvas = createCanvas({ width: inputSize, height: inputSize });
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const inputCanvas = input instanceof Canvas ? input : createCanvasFromMedia(input);
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const offset = Math.abs(width - height) / 2;
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const dx = centerImage && width < height ? offset : 0;
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const dy = centerImage && height < width ? offset : 0;
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getContext2dOrThrow(targetCanvas).drawImage(inputCanvas, dx, dy, width, height);
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return targetCanvas;
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}
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//# sourceMappingURL=imageToSquare.js.map
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