duckengine/src/utils/getImageData.ts

A 2D Game Engine for the web.

export default function getImageData(
	image: HTMLImageElement,
	w: number,
	h: number,
	onComplete: (data: string) => void,
	onFail: () => void
) {
	const canvas = document.createElement('canvas');
	const ctx = canvas.getContext('2d');
	let data = '__EMPTY__';

	canvas.width = w;
	canvas.height = h;

	image.onload = () => {
		if (ctx) {
			ctx.drawImage(image, 0, 0);
			data = canvas.toDataURL();
			onComplete(data);
		} else {
			data = '__FAILED__';
			onFail();
		}
	};
}