<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title> canvas and computed geometric boundaries for display Input/Output </title> </head> <body> <div> <canvas id="canvas_element"></canvas> </div> <style> canvas#canvas_element { border: 1px solid black; background-image: url('background.jpeg'); } </style> <button onclick="transform=transform0">transform0</button> <button onclick="transform=transform1">transform1</button> <button onclick="transform=transform2">transform2</button> <input id="slider_thickness" value="2" type="range" min="0" max="20" oninput="thickness=parseInt(this.value)"> <label><input type="checkbox" id="debug_mode_checkbox">debug mode</label> <script src="canvas.js"></script> <h1>canvas and computed geometric boundaries for Input/Output in display.</h1> <div> <a href="canvas.js">view script source, JavaScript part of this.</a> </div> <hr> <div class="text"> <div>learning again, repetition to improve.</div> <div>past works of mine: <a>https://arkenidar.com/web/canvas/</a>. </div> <div>orientation toward:</div> <div>this in HTML5... -> <a>https://replit.com/@dariocangialosi/circles</a>. </div> <div>novelty: a boolean function that answers the question of whether a coordinate is inside a "rounded-corners" boundary. <br> this should extend-and-include the drawing functionality (produce visual *output* for user) <br> to "touch in boundary" check also (user *input* checks).</div> <a>https://www.facebook.com/dario.cangialosi.arkenidar/posts/pfbid02fL1jiy9WDr7EjAYJyMaAuXWeKGkt8qyMKikLX1JLohz39akU7KNLJH9wHyDjHbEql</a> </div> <script> var links = document.querySelectorAll(".text a") for (var link of links) link.href = link.innerText </script> </body> </html>