server-json/node_modules/tfjs-image-recognition-base/build/es6/dom/createCanvas.js
2024-11-01 08:00:42 +00:00

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1.1 KiB
JavaScript

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