face-api/build/dom/createCanvas.js

import { env } from '../env';
import { getContext2dOrThrow } from './getContext2dOrThrow';
import { getMediaDimensions } from './getMediaDimensions';
import { isMediaLoaded } from './isMediaLoaded';
export function createCanvas({ width, height }) {
    const { createCanvasElement } = env.getEnv();
    const canvas = createCanvasElement();
    canvas.width = width;
    canvas.height = height;
    return canvas;
}
export function createCanvasFromMedia(media, dims) {
    const { ImageData } = env.getEnv();
    if (!(media instanceof ImageData) && !isMediaLoaded(media)) {
        throw new Error('createCanvasFromMedia - media has not finished loading yet');
    }
    const { width, height } = dims || getMediaDimensions(media);
    const canvas = createCanvas({ width, height });
    if (media instanceof ImageData) {
        getContext2dOrThrow(canvas).putImageData(media, 0, 0);
    }
    else {
        getContext2dOrThrow(canvas).drawImage(media, 0, 0, width, height);
    }
    return canvas;
}
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