# I'm trying for view of the ground from cockpit. No getting clue how to forward. Need help please

**URL:** <https://community.cesium.com/t/im-trying-for-view-of-the-ground-from-cockpit-no-getting-clue-how-to-forward-need-help-please/5568>\
**Category:** CesiumJS\
**Created:** [May 27, 2017, 3:27am UTC](https://community.cesium.com/t/im-trying-for-view-of-the-ground-from-cockpit-no-getting-clue-how-to-forward-need-help-please/5568 "2017-05-27T03:27:45Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![mahendra.971](https://avatars.discourse-cdn.com/v4/letter/m/4bbf92/32.png) [@mahendra.971](https://community.cesium.com/u/mahendra.971)\
**Post date:** [May 27, 2017, 3:27am UTC](https://community.cesium.com/t/im-trying-for-view-of-the-ground-from-cockpit-no-getting-clue-how-to-forward-need-help-please/5568/1 "2017-05-27T03:27:45Z")

</div>

I'm trying simulate view of the ground from cockpit while flight is in motion at 500ft.

I've taken following code from

[https://groups.google.com/forum/#!topic/cesium-dev/AnDR7zI0QlU](https://groups.google.com/forum/#!topic/cesium-dev/AnDR7zI0QlU)

Problems facing is:

1. No able to set the camera orientation to see ground in straight view  
2. Camera movement, not forward always. Movement i see forward , side wise and backwards.

Need help please. I've been struggling from a month to do this.

var widget = new Cesium.CesiumWidget('cesiumContainer', {  
// terrainProvider : new Cesium.CesiumTerrainProvider({  
// url : '[//assets.agi.com/stk-terrain/world](https://assets.agi.com/stk-terrain/world)'  
// })  
});

var VirtualTour = function(positions){  
&nbsp;&nbsp;&nbsp;&nbsp;var CC3=Cesium.Cartesian3;  
&nbsp;&nbsp;&nbsp;&nbsp;this.tourArray = ;  
&nbsp;&nbsp;&nbsp;&nbsp;this.load = function(positions){  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for (var i = 0; i \< positions.cameraPositions.length; i++){  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;positions[i] = positions.cameraPositions[i];  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;positions[i].destination = Cesium.Cartesian3.fromDegrees(positions[i].longitude, positions[i].latitude, positions[i].height);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;positions[i].heading = Cesium.Math.toRadians(positions[i].heading);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;positions[i].pitch = Cesium.Math.toRadians(positions[i].pitch);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;positions[i].roll = Cesium.Math.toRadians(positions[i].roll);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;positions[i].yaw = Cesium.Math.toRadians(positions[i].yaw);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.tourArray[positions[i].id] = positions[i];  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;this.load(positions);  
&nbsp;&nbsp;&nbsp;&nbsp;this.tourExecuting = false;  
&nbsp;&nbsp;&nbsp;&nbsp;this.nextPosition=1;  
&nbsp;&nbsp;&nbsp;&nbsp;this.moveIncrement = 1;  
&nbsp;&nbsp;&nbsp;&nbsp;this.timeInterval=10;  
&nbsp;&nbsp;&nbsp;&nbsp;this.flyToWait = 6000;  
&nbsp;&nbsp;&nbsp;&nbsp;this.setSpeedFactor = function(num){  
&nbsp;&nbsp;&nbsp;&nbsp;this.moveIncrement = num\*this.moveIncrement;  
&nbsp;&nbsp;&nbsp;&nbsp;}

&nbsp;&nbsp;&nbsp;&nbsp;this.flyToRest = function(){  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.nextPosition++;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var thisTour = this;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;setTimeout(function(){thisTour.flyToNext();},this.flyToWait);

&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;this.flyToNext= function(){  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var camera = widget.scene.camera;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var heightInc = 0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var cameraHeadingInc = 0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var lookUpInc = 0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var rollLeftInc = 0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var rollCompleted = 0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var angleInc = 0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var radiusChangeInc = 0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var zoomInc = 0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var yawInc = 0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var geodesic = new Cesium.EllipsoidGeodesic();  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var cart1 = Cesium.Cartographic.fromDegrees(this.tourArray[this.nextPosition-1].longitude,this.tourArray[this.nextPosition-1].latitude,this.tourArray[this.nextPosition-1].height);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var cart2 = Cesium.Cartographic.fromDegrees(this.tourArray[this.nextPosition].longitude,this.tourArray[this.nextPosition].latitude,this.tourArray[this.nextPosition].height);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;geodesic.setEndPoints(cart1, cart2);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;camera.setView({  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;heading : geodesic.startHeading,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;});  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var incGeodesic = new Cesium.EllipsoidGeodesic();  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var distanceCovered = 0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var thisTour = this;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var rotater=new CC3();  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.flightListener = function() {

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (geodesic.surfaceDistance - distanceCovered \< 1){  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;thisTour.nextPosition++;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (thisTour.nextPosition === thisTour.tourArray.length){  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;thisTour.end();  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}else{  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cart1 = Cesium.Cartographic.fromDegrees(thisTour.tourArray[thisTour.nextPosition-1].longitude,thisTour.tourArray[thisTour.nextPosition-1].latitude,thisTour.tourArray[thisTour.nextPosition-1].height);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cart2 = Cesium.Cartographic.fromDegrees(thisTour.tourArray[thisTour.nextPosition].longitude,thisTour.tourArray[thisTour.nextPosition].latitude,thisTour.tourArray[thisTour.nextPosition].height);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;geodesic.setEndPoints(cart1, cart2);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var cameraHeadingAmount = Cesium.Math.zeroToTwoPi(geodesic.endHeading)-camera.heading;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (cameraHeadingAmount \< 0 && (-cameraHeadingAmount) \> Cesium.Math.PI ){cameraHeadingAmount = Cesium.Math.PI\*2-camera.heading+geodesic.endHeading};  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (cameraHeadingAmount \> Cesium.Math.PI ){cameraHeadingAmount = -(camera.heading-geodesic.endHeading)};  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cameraHeadingInc = cameraHeadingAmount/geodesic.surfaceDistance\*thisTour.moveIncrement;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lookUpInc = (thisTour.tourArray[thisTour.nextPosition].pitch - thisTour.tourArray[thisTour.nextPosition-1].pitch)/geodesic.surfaceDistance\*thisTour.moveIncrement;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rollLeftInc = (thisTour.tourArray[thisTour.nextPosition].roll - thisTour.tourArray[thisTour.nextPosition-1].roll)/geodesic.surfaceDistance\*thisTour.moveIncrement;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;zoomInc = (thisTour.tourArray[thisTour.nextPosition].zoom - thisTour.tourArray[thisTour.nextPosition-1].zoom)/geodesic.surfaceDistance\*thisTour.moveIncrement;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;yawInc = (thisTour.tourArray[thisTour.nextPosition].yaw - thisTour.tourArray[thisTour.nextPosition-1].yaw)/geodesic.surfaceDistance\*thisTour.moveIncrement;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;console.log ("from "+(thisTour.nextPosition-1)+" to "+thisTour.nextPosition);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;console.log("cam "+camera.heading);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;console.log("geo "+geodesic.endHeading);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;console.log(cameraHeadingAmount);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;camera.setView({  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//heading : geodesic.startHeading,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//pitch : thisTour.tourArray[thisTour.nextPosition].pitch,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//roll : thisTour.tourArray[thisTour.nextPosition].roll,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;});  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;distanceCovered = 0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;heightInc = (thisTour.tourArray[thisTour.nextPosition].height - thisTour.tourArray[thisTour.nextPosition-1].height)/geodesic.surfaceDistance\*thisTour.moveIncrement;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//declarations

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var o=new CC3(0,0,0);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var oB=new CC3();var oBunit=new CC3();  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var oA=new CC3();var oAunit=new CC3();  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var A = CC3.fromDegrees(thisTour.tourArray[thisTour.nextPosition].longitude,thisTour.tourArray[thisTour.nextPosition].latitude,thisTour.tourArray[thisTour.nextPosition].height);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var B = CC3.fromDegrees(thisTour.tourArray[thisTour.nextPosition-1].longitude,thisTour.tourArray[thisTour.nextPosition-1].latitude,thisTour.tourArray[thisTour.nextPosition-1].height);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//determine rotater, the axis you rotate around. +angle is from A to B  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.subtract(B,o,oB);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.subtract(A,o,oA);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.normalize(oB,oBunit);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.normalize(oA,oAunit);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.cross(oAunit,oBunit,rotater);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[//console.log](https://console.log)(rotater);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//determine angle amount to rotate  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var adj = CC3.dot(oBunit,oAunit);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var angle = Math.acos(adj);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;angleInc = angle/geodesic.surfaceDistance\*thisTour.moveIncrement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//determine radius change from A to B  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var magB=CC3.magnitude(oB);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var magA=CC3.magnitude(oA);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var radiusChange = magB-magA;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;radiusChangeInc = radiusChange/geodesic.surfaceDistance\*thisTour.moveIncrement;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}else {  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//declarations

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var o=new CC3(0,0,0);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var oB=new CC3();var oBunit=new CC3();  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var oA=new CC3();var oAunit=new CC3();  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var A = CC3.fromDegrees(thisTour.tourArray[thisTour.nextPosition].longitude,thisTour.tourArray[thisTour.nextPosition].latitude,thisTour.tourArray[thisTour.nextPosition].height);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var B = CC3.fromDegrees(thisTour.tourArray[thisTour.nextPosition-1].longitude,thisTour.tourArray[thisTour.nextPosition-1].latitude,thisTour.tourArray[thisTour.nextPosition-1].height);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//determine rotater, the axis you rotate around. +angle is from A to B  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.subtract(B,o,oB);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.subtract(A,o,oA);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.normalize(oB,oBunit);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.normalize(oA,oAunit);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.cross(oAunit,oBunit,rotater);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[//console.log](https://console.log)(rotater);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//determine angle amount to rotate  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var adj = CC3.dot(oBunit,oAunit);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var angle = Math.acos(adj);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;angleInc = angle/geodesic.surfaceDistance\*thisTour.moveIncrement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//determine radius change from A to B  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var magB=CC3.magnitude(oB);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var magA=CC3.magnitude(oA);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var radiusChange = magB-magA;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;radiusChangeInc = radiusChange/geodesic.surfaceDistance\*thisTour.moveIncrement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var currentPos = camera.positionCartographic;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;incGeodesic.setEndPoints(currentPos, cart2);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;camera.look(Cesium.Ellipsoid.WGS84.geodeticSurfaceNormalCartographic(currentPos),cameraHeadingInc);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;camera.lookUp(lookUpInc);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;camera.twistRight(rollLeftInc);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;camera.zoomIn(zoomInc);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;camera.lookRight(yawInc);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;camera.setView({  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//positionCartographic: geodesic.interpolateUsingSurfaceDistance(distanceCovered),  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//heading : incGeodesic.startHeading,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//pitch : thisTour.tourArray[thisTour.nextPosition].pitch,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//roll : rollCompleted,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;});  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/\*  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(0)  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{camera.moveForward(thisTour.moveIncrement);}  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;else  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//remove vertical component from camera.direction  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var nadir = new CC3();var temp= new CC3();  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cesium.Ellipsoid.WGS84.geodeticSurfaceNormalCartographic(currentPos, nadir);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.negate(nadir,nadir); //zenith to nadir  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var scalar = CC3.dot(camera.direction,nadir);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.multiplyByScalar(nadir,scalar,temp);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;CC3.subtract(camera.direction,temp,temp); //remove downward component  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[//widget.scene.camera.move](https://widget.scene.camera.move)(temp,thisTour.moveIncrement);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*/  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[//camera.rotate](https://camera.rotate)(rotater, thisTour.moveIncrement/6371000+radiusChangeInc+heightInc);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;camera.rotate(rotater, angleInc);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;camera.move(Cesium.Ellipsoid.WGS84.geodeticSurfaceNormalCartographic(currentPos),heightInc);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;distanceCovered = distanceCovered+thisTour.moveIncrement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;widget.clock.onTick.addEventListener(thisTour.flightListener);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;};  
&nbsp;&nbsp;&nbsp;&nbsp;this.start = function(){  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;try {  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (this.tourExecuting) return;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.tourExecuting = true;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.nextPosition=1;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.startPosition = {};  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.startPosition.destination = Cesium.Cartesian3.clone(widget.scene.camera.positionWC);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.startPosition.heading = widget.scene.camera.heading;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.startPosition.pitch = widget.scene.camera.pitch;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.startPosition.roll = widget.scene.camera.roll;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;widget.scene.camera.flyTo({  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;destination : this.tourArray[this.nextPosition].destination,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;duration : 5,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;complete : this.flyToRest.call(this),  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;orientation : {  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;heading: this.tourArray[this.nextPosition].heading,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pitch: this.tourArray[this.nextPosition].pitch,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;roll: this.tourArray[this.nextPosition].roll,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;});  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}catch(err) {  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.tourExecuting = false;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;};  
&nbsp;&nbsp;&nbsp;&nbsp;this.end = function(){  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;try {  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.nextPosition=0;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.tourExecuting=false;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;widget.clock.onTick.removeEventListener(this.flightListener);  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;widget.scene.camera.flyTo({  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;destination : this.startPosition.destination,

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;duration : 5,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;orientation : {  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;heading: this.startPosition.heading,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pitch: this.startPosition.pitch,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;roll: this.startPosition.roll,  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;});  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}catch(err) {  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.tourExecuting = false;  
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;}  
&nbsp;&nbsp;&nbsp;&nbsp;  
}

function tourExecuting(){  
&nbsp;&nbsp;&nbsp;&nbsp;return sanMarcosTour.tourExecuting;  
}

var positions = {"cameraPositions":[{"id":1,"name":"","longitude":-117.2574805017832,"latitude":32.93612414370479,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":2,"name":"","longitude":-117.2576608676146,"latitude":32.93831739821949,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":3,"name":"","longitude":-117.2579841712574,"latitude":32.93894148374235,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":4,"name":"","longitude":-117.2587435114121,"latitude":32.93942140275828,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":5,"name":"","longitude":-117.2594873755863,"latitude":32.93970836908177,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":6,"name":"","longitude":-117.2602644248514,"latitude":32.93969835583901,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":7,"name":"","longitude":-117.2610725917547,"latitude":32.94043843876157,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":8,"name":"","longitude":-117.2615265613306,"latitude":32.93757776020794,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":9,"name":"","longitude":-117.2597804456261,"latitude":32.9256440520405,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":10,"name":"","longitude":-117.2589789942027,"latitude":32.91494184362212,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":11,"name":"","longitude":-117.2562562275032,"latitude":32.9068053290119,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":12,"name":"","longitude":-117.2545063327262,"latitude":32.89179637715441,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":13,"name":"","longitude":-117.2540908126949,"latitude":32.88399252006997,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":14,"name":"","longitude":-117.2527851342648,"latitude":32.87966014623343,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":15,"name":"","longitude":-117.2522264417479,"latitude":32.87624928505539,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":16,"name":"","longitude":-117.2525859543191,"latitude":32.87336449763869,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":17,"name":"","longitude":-117.2540523482096,"latitude":32.8700631337669,"height":20.0,"heading":0.0,"pitch":0.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":18,"name":"","longitude":-117.2557263760174,"latitude":32.86552883427716,"height":100.0,"heading":0.0,"pitch":0.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":19,"name":"","longitude":-117.2576105498436,"latitude":32.86067776364092,"height":100.0,"heading":0.0,"pitch":0.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":20,"name":"","longitude":-117.2599242985757,"latitude":32.85651551476757,"height":20.0,"heading":0.0,"pitch":-90.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":21,"name":"","longitude":-117.2610728775735,"latitude":32.85413848711738,"height":100.0,"heading":0.0,"pitch":-90.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":22,"name":"","longitude":-117.2633041330431,"latitude":32.85193036086147,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":23,"name":"","longitude":-117.2655343611839,"latitude":32.85000759593054,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":24,"name":"","longitude":-117.2668491792967,"latitude":32.84963570717962,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":300.0},{"id":25,"name":"","longitude":-117.2670609902502,"latitude":32.84959368232232,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":300.0},{"id":26,"name":"","longitude":-117.2681280546488,"latitude":32.84961904027797,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":27,"name":"","longitude":-117.2693640026944,"latitude":32.85035478385458,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":28,"name":"","longitude":-117.2710194890279,"latitude":32.85125839505423,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":29,"name":"","longitude":-117.2712825206309,"latitude":32.8512955715919,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":30,"name":"","longitude":-117.2728362009425,"latitude":32.85168314049089,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":31,"name":"","longitude":-117.273182333766,"latitude":32.85177104885528,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":32,"name":"","longitude":-117.2745246645412,"latitude":32.85198971273201,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":33,"name":"","longitude":-117.2762007546314,"latitude":32.85131409915105,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":34,"name":"","longitude":-117.2764130556624,"latitude":32.85111987434836,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":35,"name":"","longitude":-117.2765769772855,"latitude":32.85094470039187,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":36,"name":"","longitude":-117.2775449716605,"latitude":32.85008884850251,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":37,"name":"","longitude":-117.2786863025526,"latitude":32.85143051498085,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":38,"name":"","longitude":-117.2791629329039,"latitude":32.85493397515227,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":39,"name":"","longitude":-117.2770596815736,"latitude":32.85615390154368,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":40,"name":"","longitude":-117.2744351014736,"latitude":32.85643090461426,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":41,"name":"","longitude":-117.2695653884658,"latitude":32.85501932547913,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":42,"name":"","longitude":-117.2693627142943,"latitude":32.85365262887459,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":43,"name":"","longitude":-117.2696617865192,"latitude":32.85311481938188,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":44,"name":"","longitude":-117.2700505997411,"latitude":32.85285553151987,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":45,"name":"","longitude":-117.2707043799224,"latitude":32.85289457277322,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":46,"name":"","longitude":-117.2711066376687,"latitude":32.85257085617489,"height":100.0,"heading":0.0,"pitch":-15.0,"roll":20.0,"yaw":30.0,"zoom":0.0},{"id":47,"name":"","longitude":-117.2714153210521,"latitude":32.85224386194295,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":48,"name":"","longitude":-117.2715787043067,"latitude":32.85206142828558,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":49,"name":"","longitude":-117.2716442232234,"latitude":32.85196335317858,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":50,"name":"","longitude":-117.2716812635401,"latitude":32.85189833237033,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":51,"name":"","longitude":-117.2717126269207,"latitude":32.85183396244378,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},{"id":52,"name":"","longitude":-117.2718703225404,"latitude":32.85154592095168,"height":20.0,"heading":0.0,"pitch":-15.0,"roll":0.0,"yaw":0.0,"zoom":0.0},]};

var sanMarcosTour = new VirtualTour(positions);

/\*  
var sanMarcosTour = {};  
jQuery.getJSON( "resources/SanMarcosTour.json", function( positions ) {  
&nbsp;&nbsp;&nbsp;&nbsp;sanMarcosTour = new VirtualTour(positions);  
});

\*/  
function SanMarcosTour(){  
&nbsp;&nbsp;&nbsp;&nbsp;if (tourExecuting()) return;  
&nbsp;&nbsp;&nbsp;&nbsp;sanMarcosTour.setSpeedFactor(2);  
&nbsp;&nbsp;&nbsp;&nbsp;sanMarcosTour.start();  
}  
SanMarcosTour();

---

<div class="post-metadata">

**Author:** ![Rachel\_Hwang](https://avatars.discourse-cdn.com/v4/letter/r/d78d45/32.png) [@Rachel\_Hwang](https://community.cesium.com/u/Rachel_Hwang)\
**Post date:** [June 8, 2017, 2:03pm UTC](https://community.cesium.com/t/im-trying-for-view-of-the-ground-from-cockpit-no-getting-clue-how-to-forward-need-help-please/5568/2 "2017-06-08T14:03:59Z")

</div>

Hi there,

Your desired behavior sounds very similar to the discussion here: [https://groups.google.com/forum/#!msg/cesium-dev/-mDNh2qlTZQ/WOIPQHVNAgAJ](https://groups.google.com/forum/#!msg/cesium-dev/-mDNh2qlTZQ/WOIPQHVNAgAJ)

Matt has provided a code example. However, if you’re using the latest version of cesium, there’s a bug that prevents the gist from running. It can be fixed using the code from this pull request: [https://github.com/AnalyticalGraphicsInc/cesium/pull/5440](https://github.com/AnalyticalGraphicsInc/cesium/pull/5440) (has been merged and will be in the next release).

Hope that helps!

- Rachel