Vincent P. vincent64

(Note: This writeup assumes some knowledge of SIMD programming, assembly and AABBs).

Introduction

There are a couple of ways to represent an axis aligned bounding box in 2D, but I think the most common is to store the minimum and maximum coordinates. With this approach, most basic operations (overlap tests, union/intersection, etc.) have simple implementations and offer decent performance.

Some time ago, I came up with a modification to this AABB representation that has the potential for better performance. I haven't seen this technique mentioned or used anywhere, but if you have seen it somehow I would appreciate it if you could let me know.

More info can be found at, https://docs.microsoft.com/en-us/dotnet/api/system.environment.specialfolder?view=netframework-4.7.2

Code example

// C:\ProgramData\
var path1 = System.Environment.GetFolderPath(System.Environment.SpecialFolder.CommonApplicationData);

// C:\Users\USERNAME\AppData\Roaming
var path2 = System.Environment.GetFolderPath(System.Environment.SpecialFolder.ApplicationData);

	public class CountryFlags {
	private static String A = getEmojiByUnicode(0x1F1E6);
	private static String B = getEmojiByUnicode(0x1F1E7);
	private static String C = getEmojiByUnicode(0x1F1E8);
	private static String D = getEmojiByUnicode(0x1F1E9);
	private static String E = getEmojiByUnicode(0x1F1EA);
	private static String F = getEmojiByUnicode(0x1F1EB);
	private static String G = getEmojiByUnicode(0x1F1EC);
	private static String H = getEmojiByUnicode(0x1F1ED);
	private static String I = getEmojiByUnicode(0x1F1EE);

	<!DOCTYPE html>
	<html>

	<head>
	<title>Sine Wave</title>
	<script type="text/javascript">
	function showAxes(ctx,axes) {
	var width = ctx.canvas.width;
	var height = ctx.canvas.height;
	var xMin = 0;