Ajout partie Web

data/speed.js

@@ -0,0 +1,20 @@
+<script>
+// JavaScript to update needle and speed text
+function setSpeed(speed) {
+  // Clamp speed
+  speed = Math.max(0, Math.min(250, speed));
+  // Map speed to angle: 0 = -120deg, 250 = +120deg
+  var angle = -120 + (speed / 250) * 240;
+  var rad = angle * Math.PI / 180;
+  var r = 100; // needle length
+  var cx = 150, cy = 150;
+  var x2 = cx + r * Math.cos(rad);
+  var y2 = cy + r * Math.sin(rad);
+  document.getElementById('needle').setAttribute('x2', x2);
+  document.getElementById('needle').setAttribute('y2', y2);
+  document.getElementById('speedText').textContent = speed;
+}
+// Example: set speed to 120 after 1s
+setTimeout(function(){ setSpeed(120); }, 1000);
+// You can call setSpeed(value) from other JS code
+</script>