HTML Canvas Day 8 of 30.

2023-02-22 10:59:39 -08:00 · 2023-02-22 10:59:39 -08:00 · 38c106b43b
commit 38c106b43b
parent fb6f66bd84
1 changed files with 57 additions and 0 deletions
--- a/[8-30]/index.html
+++ b/[8-30]/index.html
@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>HTML5 Canvas</title>
+  <link rel="icon" href="https://fav.farm/🔥" />
+</head>
+<body>
+<canvas id="draw" width="800" height="800"></canvas>
+<script>
+  const canvas = document.querySelector('#draw');
+  const ctx = canvas.getContext('2d');
+  canvas.width = window.innerWidth;
+  canvas.heigh = window.innerHeight;
+  ctx.strokeStyle = '#BADA55';
+  ctx.lineJoin = 'round';
+  ctx.lineCap = 'round';
+  ctx.lineWidth = 6;
+
+  let isDrawing = false;
+  let lastX = 0;
+  let lastY = 0;
+  let hue = 0;
+
+  function draw(e) {
+    if(!isDrawing) return;
+    // console.log(e);
+    ctx.strokeStyle = `hsl(${hue}, 100%, 50%)`;
+    ctx.beginPath();
+    ctx.moveTo(lastX, lastY);
+    ctx.lineTo(e.offsetX, e.offsetY);
+    ctx.stroke();
+    [lastX, lastY] = [e.offsetX, e.offsetY];
+    hue++;
+    if(hue > 360) hue = 0;
+  }
+
+  canvas.addEventListener('mousedown', (e)=> {
+    isDrawing = true;
+    [lastX, lastY] = [e.offsetX, e.offsetY];
+
+  });
+
+  canvas.addEventListener('mousemove', draw);
+  canvas.addEventListener('mouseup', ()=> isDrawing = false);
+  canvas.addEventListener('mouseout', ()=> isDrawing = false);
+
+</script>
+
+<style>
+  html, body {
+    margin: 0;
+  }
+</style>
+
+</body>
+</html>