another sample for changing atmosphere properties

examples/example/entities/changingAtmosphereExample.js

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+//
+//  changingAtmosphereExample.js
+//  examples
+//
+//  Created by Brad Hefta-Gaub on 4/16/15.
+//  Copyright 2015 High Fidelity, Inc.
+//
+//  This is an example script that demonstrates creating a zone using the atmosphere features that changes scatter properties
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+HIFI_PUBLIC_BUCKET = "http://s3.amazonaws.com/hifi-public/";
+
+var count = 0;
+var stopAfter = 10000;
+
+var zoneEntityA = Entities.addEntity({
+    type: "Zone",
+    position: { x: 1000, y: 1000, z: 1000}, 
+    dimensions: { x: 2000, y: 2000, z: 2000 },
+    keyLightColor: { red: 255, green: 0, blue: 0 },
+    stageSunModelEnabled: false,
+    shapeType: "sphere",
+    skyboxMode: "atmosphere",
+    atmosphere: {
+        center: { x: 1000, y: 0, z: 1000}, 
+        innerRadius: 1000.0,
+        outerRadius: 1025.0,
+        rayleighScattering: 0.0025, // Meaningful values 0 to ~0.01
+        mieScattering: 0.0010, // Meaningful values 0 to ~0.01
+        
+        // First two, Meaningful values 0 to 1 each, blue, purple; third meaningful 0.3 to 1 - affects shape
+        scatteringWavelengths: { x: 0.650, y: 0.570, z: 0.475 },  
+        hasStars: true
+    },
+    stageLatitude: 37.777,
+    stageLongitude: 122.407,
+    stageAltitude: 0.03,
+    stageDay: 183,
+    stageHour: 5,
+    stageSunModelEnabled: true
+});
+
+
+// register the call back so it fires before each data send
+Script.update.connect(function(deltaTime) {
+    // stop it...
+    if (count >= stopAfter) {
+        print("calling Script.stop()");
+        Script.stop();
+    }
+    count++;
+    var rayleighScattering = (count / 100000) % 0.01;
+    var mieScattering = (count / 100000) % 0.01;
+    var waveX = (count / 2000) % 1;
+    var waveZ = ((count / 2000) % 0.7) + 0.3;
+    
+    Entities.editEntity(zoneEntityA, { 
+        atmosphere: {
+            rayleighScattering: rayleighScattering,
+            mieScattering: mieScattering,
+            scatteringWavelengths: { x: waveX, y: waveX, z: waveZ }
+        },
+
+    });
+});
+