glitch-canvas/src/input/sanitizeInput.js

JavaScript library for applying a glitch effect to a canvas element

import clamp from '../util/clamp';
import clone from '../util/clone';
import defaultParams from './defaultParams';

export default function (params) {
	params = clone(params);

	if (typeof params !== 'object') {
		params = {};
	}

	Object.keys(defaultParams)
		.filter(key => key !== 'iterations')
		.forEach(key => {
			if (typeof params[key] !== 'number' || isNaN(params[key])) {
				params[key] = defaultParams[key];
			} else {
				params[key] = clamp(params[key], 0, 100);
			}

			params[key] = Math.round(params[key]);
		});

	if (
		typeof params.iterations !== 'number' ||
		isNaN(params.iterations) ||
		params.iterations <= 0
	) {
		params.iterations = defaultParams.iterations;
	}

	params.iterations = Math.round(params.iterations);

	return params;
}