started compartmentlising animations 0.1

2025-09-27 22:45:25 +00:00 · 2022-03-16 00:51:43 +13:00
parent 0be69ea7c3
commit 70421f763f
15 changed files with 1270 additions and 237 deletions
--- a/Catalogue/triangle.html
+++ b/Catalogue/triangle.html
@@ -0,0 +1,66 @@
+<!DOCTYPE html>
+<html>
+<!-- ahhh -->
+
+<body style="margin:0;overflow: hidden;">
+  <canvas id="myCanvas" width="10" height="10" style="display: block;box-sizing: border-box;">
+    Your browser does not support the HTML5 canvas tag.</canvas>
+  <script>
+    let c = document.getElementById("myCanvas");
+    let ctx = c.getContext("2d");
+    ctx.canvas.width = window.innerWidth;
+    ctx.canvas.height = window.innerHeight;
+
+    let deg_per_sec = 30;
+    let time = 120;
+    let fps = 60;
+
+    centerX = ctx.canvas.width / 2;
+    centerY = ctx.canvas.height / 2;
+
+    rotation = 0; //was = j = angle
+    currentFrame = 0; //was = i
+
+
+    function render() {
+      if (currentFrame < time / (1 / fps)) {
+        setTimeout(() => {
+          render();
+          render_clear();
+
+          draw_triangle(0, 200)
+
+        }, 1000 / fps);
+        rotation += deg_per_sec / fps; // was = j = angle, now = rotation
+        currentFrame += 1; // was = i
+      }
+    }
+
+    render();
+
+    function draw_triangle(ang, radius) {
+      ctx.beginPath();
+      ctx.moveTo(centerX + Math.cos(rad(90 + 120 * 1 + ang)) * radius, centerY + Math.sin(rad(90 + 120 * 1 + ang)) * radius);
+      ctx.lineTo(centerX + Math.cos(rad(90 + 120 * 2 + ang)) * radius, centerY + Math.sin(rad(90 + 120 * 2 + ang)) * radius);
+      ctx.lineTo(centerX + Math.cos(rad(90 + 120 * 3 + ang)) * radius, centerY + Math.sin(rad(90 + 120 * 3 + ang)) * radius);
+      ctx.lineTo(centerX + Math.cos(rad(90 + 120 * 1 + ang)) * radius, centerY + Math.sin(rad(90 + 120 * 1 + ang)) * radius);
+      ctx.strokeStyle = "red";
+      ctx.stroke();
+    }
+
+    function rad(degrees) {
+      var pi = Math.PI;
+      return degrees * (pi / 180);
+    }
+
+
+    function render_clear() {
+      ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
+      ctx.fillStyle = "black";
+      ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
+    }
+
+  </script>
+</body>
+
+</html>