All gists

evert / Point-on-sphere

Last active 3 months ago

0 0 1

1	// Get angle on circle from mouse position
2	function getAngleOnCircleFromOffsetMouse(evt) {
3	const x = (evt.pageX - element.offset().left);
4	const y = (evt.pageY - element.offset().top);
5
6	// https://math.stackexchange.com/a/127615
7	const center = { x: width / 2, y: width / 2 };
8	const xCenter = (x - center.x);
9	const yCenter = (y - center.y);
10	const circlePoint = {

evert / Voxel mesher

Last active 3 months ago

0 0 1

1	function mesh (params) {
2	const dims = params.dims
3	const vertices = []
4	const indices = []
5	const normals = []
6
7	for (let backFace = true, b = false; b !== backFace; backFace = backFace && b, b = !b) {
8	// Sweep over 3-axes
9	for (let d = 0; d < 3; ++d) {
10	let i, j, k, l, w, h, side

evert / TypeScript accurate date difference calculator

Last active 3 months ago

0 0 1

1	// https://stackoverflow.com/a/49201872
2	const calcDateDifference = (
3	start: string | Date,
4	end: string | Date
5	): { year: number; month: number; day: number } => {
6	// Convert to true dates without time
7	let startDate = new Date(new Date(start).toISOString().substring(0, 10));
8	let endDate = new Date(
9	(end ? new Date(end) : new Date()).toISOString().substring(0, 10)
10	);

evert / Certificate Authority

Last active 3 months ago

0 0 1

1	#!/bin/bash
2
3	# Source: https://jamielinux.com/docs/openssl-certificate-authority/index.html
4
5	if [ -z "$1" ]; then
6	echo "=x=> Path for your CA root is required!"
7	exit 1
8	fi
9
10	CA_ROOT=$(realpath "$1")

evert / Bezier curve experiments

Last active 3 months ago

0 0 1

1	import { vec2 } from 'gl-matrix';
2	import './index.scss';
3
4	const canvas = document.createElement('canvas');
5	const ctx = canvas.getContext('2d')!;
6
7	interface Bezier {
8	start: vec2;
9	controlS: vec2;
10	controlE: vec2;