Retro graphics GENIUS revealed! Inside 1980s BASIC’s PAINT. скачать в хорошем качестве

Retro graphics GENIUS revealed! Inside 1980s BASIC’s PAINT.

The TRS-80 Color Computer and Dragon computers, among others in the 1980s, came with a PAINT command as part of their BASIC language. All PAINT needed was a starting point, a paint color, and a border color, and it would figure out how to fill in any shape you had drawn on the screen. In this video we go through PAINT's algorithm step-by-step, illustrating how it combined a stack and a simple paint-line routine to color in anything you threw at it. We also compare it to a much simpler depth-first-search approach. Coming soon: An even deeper dive into the PAINT implementation! More CoCo Town Fundamentals:    • Recursion to the lowest level   Writing a retro game in assembly:    • Let's start improving that game! | Game re...   BASIC's PAINT code: https://github.com/davidlinsley/Drago... (src/ECBGRP.SA) https://colorcomputerarchive.com/repo... Span-filling: https://en.wikipedia.org/wiki/Flood_fill Music: "Summer of 1984" by RKvc Some music made with cocoretro sound library: https://www.pianobook.co.uk/packs/coc... 00:00 Intro 02:08 The Stack 04:11 Paintline routine 05:15 Putting it together 09:27 Border scan 14:10 Overhangs 18:44 Depth First Search 21:25 But wait, there's more! 22:16 Outtakes