Jaime asm-jaime

math+programming

asm-jaime / fetch-b64.js

Created June 15, 2018 15:07

convert Image url to Base64 with use fetch

	const fetch = require('node-fetch');

	function btob64(buff) {
	let binary = '';
	const bytes = (new Array()).slice.call(new Uint8Array(buff));

	for(let i = 0; i < bytes.length; ++i){
	binary = binary + String.fromCharCode(bytes[i]);
	}

asm-jaime / index.html

Created February 13, 2020 15:13

button, open json data in new tab

	<button onClick={() => {
	const jsonData = JSON.stringify(state, null, 2);
	const w = window.open();
	w.document.open();
	w.document.write('<html><body><pre>' + jsonData + '</pre></body></html>');
	w.document.close();
	}}>open</button>

asm-jaime / grid.clasterization.js

Created September 18, 2020 07:53

fast clasterization by k-mean+grid on javascript

	const grid_clasterization = (points, quadrant_size, grid_size, x_max, y_max) => {
	const quadrants = Array.apply(null, {length: Math.ceil(grid_size/quadrant_size)}).map(e => 0);
	const grid_width = Math.sqrt(grid_size);
	const quadrant_width = Math.sqrt(quadrant_size);

	const grid_quadro_x_size = (x_max / grid_width)*quadrant_width;
	const grid_quadro_y_size = (y_max / grid_width)*quadrant_width;

	for(const point of points) {
	const x_index = (Math.ceil(point.x/grid_quadro_x_size) - 1);