Add palette basics

[rbdr/canvas] / src / lib / animations / blink.js

import { sineInOut } from 'svelte/easing';

export const blink = function blink(node, params) {
	const originalWidth = parseFloat(getComputedStyle(node).width);
	const originalHeight = parseFloat(getComputedStyle(node).height);

	return {
		delay: params.delay || 0,
		duration: params.duration || 400,
		easing: params.easing || sineInOut,
		css: (t) => {
			const halfWidth = originalWidth / 2;
			const halfHeight = originalHeight / 2;
			const width = Math.round(t <= 0.2 ? (originalWidth * t) / 0.2 : originalWidth);
			const marginY = Math.round(t <= 0.2 ? halfHeight * (1 - t / 0.2) : 0);
			const height = Math.round(t > 0.2 ? ((t - 0.2) / 0.8) * originalHeight : 0);
			const marginX = Math.round(t > 0.2 ? (1 - (t - 0.2) / 0.8) * halfWidth : halfWidth);

      console.log(width, height);

			return `width: ${width}px; height: ${height}px;`;
		}
	};
};