Created
June 25, 2023 20:44
-
-
Save jsjolund/70f9c986dae2ce2ea97ba3f6545ba033 to your computer and use it in GitHub Desktop.
This HTML file contains JavaScript code that generates a Sierpinski Gasket with 5 iterations of triangles.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <title>Sierpinski Gasket with JavaScript</title> | |
| <style> | |
| .small { fill: none; stroke: black; stroke-width: 1; } | |
| </style> | |
| </head> | |
| <body> | |
| <svg id="sierpinskiSVG" xmlns="http://www.w3.org/2000/svg" width="600" height="600" viewBox="0 0 600 600"></svg> | |
| <script> | |
| const svg = document.getElementById('sierpinskiSVG'); | |
| function drawTriangle(x, y, size) { | |
| const halfSize = size / 2; | |
| const points = [ | |
| [x, y], | |
| [x + size, y], | |
| [x + halfSize, y + (Math.sqrt(3) * halfSize)], | |
| ]; | |
| const polygon = document.createElementNS("http://www.w3.org/2000/svg", "polygon"); | |
| polygon.setAttribute('points', points.map(p => p.join(',')).join(' ')); | |
| polygon.setAttribute('class', 'small'); | |
| svg.appendChild(polygon); | |
| } | |
| function sierpinski(x, y, size, iterations) { | |
| if (iterations === 0) { | |
| drawTriangle(x, y, size); | |
| } else { | |
| const newSize = size / 2; | |
| sierpinski(x, y, newSize, iterations - 1); | |
| sierpinski(x + newSize, y, newSize, iterations - 1); | |
| sierpinski(x + newSize / 2, y + (Math.sqrt(3) * newSize / 2), newSize, iterations - 1); | |
| } | |
| } | |
| sierpinski(0, 0, 600, 5); | |
| </script> | |
| </body> | |
| </html> | |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment