examples/script/context2d/scripts/clock.js
changeset 0 1918ee327afb
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/script/context2d/scripts/clock.js	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,99 @@
+function init(){
+  clock();
+  setInterval('clock()',1000);
+}
+function clock(){
+  var now = new Date();
+  var ctx = document.getElementById('tutorial').getContext('2d');
+  ctx.save();
+  ctx.clearRect(0,0,150,150);
+  ctx.translate(75,75);
+  ctx.scale(0.4,0.4);
+  ctx.rotate(-Math.PI/2);
+  ctx.strokeStyle = "black";
+  ctx.fillStyle = "white";
+  ctx.lineWidth = 8;
+  ctx.lineCap = "round";
+
+  // Hour marks
+  ctx.save();
+  ctx.beginPath();
+  for (i=0;i<12;i++){
+    ctx.rotate(Math.PI/6);
+    ctx.moveTo(100,0);
+    ctx.lineTo(120,0);
+  }
+  ctx.stroke();
+  ctx.restore();
+
+  // Minute marks
+  ctx.save();
+  ctx.lineWidth = 5;
+  ctx.beginPath();
+  for (i=0;i<60;i++){
+    if (i%5!=0) {
+      ctx.moveTo(117,0);
+      ctx.lineTo(120,0);
+    }
+    ctx.rotate(Math.PI/30);
+  }
+  ctx.stroke();
+  ctx.restore();
+  
+  var sec = now.getSeconds();
+  var min = now.getMinutes();
+  var hr  = now.getHours();
+  hr = hr>=12 ? hr-12 : hr;
+
+  ctx.fillStyle = "black";
+
+  // write Hours
+  ctx.save();
+  ctx.rotate( hr*(Math.PI/6) + (Math.PI/360)*min + (Math.PI/21600)*sec )
+  ctx.lineWidth = 14;
+  ctx.beginPath();
+  ctx.moveTo(-20,0);
+  ctx.lineTo(80,0);
+  ctx.stroke();
+  ctx.restore();
+
+  // write Minutes
+  ctx.save();
+  ctx.rotate( (Math.PI/30)*min + (Math.PI/1800)*sec )
+  ctx.lineWidth = 10;
+  ctx.beginPath();
+  ctx.moveTo(-28,0);
+  ctx.lineTo(112,0);
+  ctx.stroke();
+  ctx.restore();
+  
+  // Write seconds
+  ctx.save();
+  ctx.rotate(sec * Math.PI/30);
+  ctx.strokeStyle = "#D40000";
+  ctx.fillStyle = "#D40000";
+  ctx.lineWidth = 6;
+  ctx.beginPath();
+  ctx.moveTo(-30,0);
+  ctx.lineTo(83,0);
+  ctx.stroke();
+  ctx.beginPath();
+  ctx.arc(0,0,10,0,Math.PI*2,true);
+  ctx.fill();
+  ctx.beginPath();
+  ctx.arc(95,0,10,0,Math.PI*2,true);
+  ctx.stroke();
+  ctx.fillStyle = "#555";
+  ctx.arc(0,0,3,0,Math.PI*2,true);
+  ctx.fill();
+  ctx.restore();
+
+  ctx.beginPath();
+  ctx.lineWidth = 14;
+  ctx.strokeStyle = '#325FA2';
+  ctx.arc(0,0,142,0,Math.PI*2,true);
+  ctx.stroke();
+
+  ctx.restore();
+}
+init();