job w/ duration

index.html

@@ -57,8 +57,14 @@ var Time =
     Jobs:[],
     Stamp:false,
     Queue:false,
+    Loop:false,
     Add:function(inJob)
     {
+        if(Time.Loop)
+        {
+            console.log("cannot modify queue while processing");
+            return;
+        }
         if(!Time.Queue)
         {
             window.requestAnimationFrame(Time.Update);
@@ -66,6 +72,19 @@ var Time =
         Time.Queue = true;
         Time.Jobs.push(inJob);
     },
+    Remove:function(inJob)
+    {
+        if(Time.Loop)
+        {
+            console.log("cannot modify queue while processing");
+            return;
+        }
+        var index = Time.Jobs.indexOf(inJob);
+        if(index > -1)
+        {
+            Time.Jobs.splice(index, 1);
+        }
+    },
     Update:function(inTimestamp)
     {
         var delta;
@@ -78,14 +97,16 @@ var Time =
         delta = inTimestamp - Time.Stamp;
         Time.Stamp = inTimestamp;
 
+        Time.Loop = true;
         for(i=0; i<Time.Jobs.length; i++)
         {
-            if(!Time.Jobs[i](delta))
+            if(Time.Jobs[i](delta) === false)
             {
                 Time.Jobs.splice(i, 1);
                 i--;
             }
         }
+        Time.Loop = false;
 
         if(Time.Jobs.length > 0)
         {
@@ -99,7 +120,7 @@ var Time =
     }
 };
 
-function JobConic(inFrom, inRange, inDuration, inHandler)
+function JobDuration(inDuration, inHandler, inDone)
 {
     var timeCurrent = 0;
     var timeLimit = inDuration*1000;
@@ -109,21 +130,28 @@ function JobConic(inFrom, inRange, inDuration, inHandler)
     {
         timeCurrent += inDelta;
         timeMaxed = timeCurrent > timeLimit;
-        if(timeMaxed){ timeCurrent = timeLimit; }
-        timeRelative = timeCurrent / timeLimit;
-        inHandler(inFrom + inRange*Math.sqrt(1 - Math.pow(1-(timeRelative), 2)));
-        return !timeMaxed;
+        if(timeMaxed)
+        {
+            inHandler(1);
+            inDone();
+            return false;
+        }
+        return inHandler(timeCurrent / timeLimit);
     };
 }
 
 
 document.querySelector("nav").addEventListener("click", function(inEvent)
 {
-    var href = inEvent.target.getAttribute("href");
-    var html = document.querySelector("html");
-    var goal = document.querySelector(href).getBoundingClientRect().top;
-
-    Time.Add( JobConic(html.scrollTop, goal, 0.4, function(inOutput){ html.scrollTop = inOutput; } ) );
+    var domHtml = document.querySelector("html");
+    var domGoal = document.querySelector(inEvent.target.getAttribute("href"));
+    var posStart = domHtml.scrollTop - 200;
+    var posRange = domGoal.getBoundingClientRect().top;
+    var evtTick = function(inProgress){ domHtml.scrollTop = posStart + posRange*Math.sqrt(1 - Math.pow(1-(inProgress), 2)); };
+    var evtDone = function(){ Spy.Resume(); };
+    
+    Spy.Suspend();
+    Time.Add( JobDuration(0.4, evtTick, evtDone) );
     inEvent.preventDefault();
 });
 
@@ -134,11 +162,23 @@ var Spy =
     Attribute:"data-spy",
     Members:[],
     Defaults:[0, 1, 0, 1],
+    Disabled:false,
+    Suspend:function()
+    {
+        Spy.Disabled = true;
+    },
+    Resume:function()
+    {
+        Spy.Disabled = false;
+        Spy.UpdateAll();
+    },
     UpdateAll:function()
     {
         var i, member, aabb, top, bottom, left, right;
         var visible;
 
+        if(Spy.Disabled){ return; }
+
         for(i=0; i<Spy.Members.length; i++)
         {
             member = Spy.Members[i];