App.js

     Cesium.Ion.defaultAccessToken = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJqdGkiOiJkNjcyOWZhYi0xZmQ0LTQyYmMtYjQ0MS1hY2YxYzcxYWFmMWEiLCJpZCI6MTEwNzEsImlhdCI6MTYzMDk5MzEyNX0.fcsH4S5hE0ye9s-2cOFMyObiHlhu9vqjWdlYfGkv5gU';
	var flatterrain = new Cesium.EllipsoidTerrainProvider();
	var terrainProviderViewModels = [];
	 terrainProviderViewModels.push(new Cesium.ProviderViewModel({
        name : 'Flat',
        iconUrl : Cesium.buildModuleUrl('https://w2.iaf-ex.hft-stuttgart.de/CesiumData/Images/TerrainProviders/Ellipsoid.png'),
        creationFunction : function() {
            return flatterrain;
			}
      })); 
    //////////////////////////////////////////////////////////////////////////
    // Creating the Viewer
    //////////////////////////////////////////////////////////////////////////

  var viewer = new Cesium.Viewer('cesiumContainer', {
         scene3DOnly: true,
         selectionIndicator: false,
		 timeline: false,
		 animation: false,
		 shadow: false,
		 // // Set default basemap
		 imageryProvider : new Cesium.ArcGisMapServerImageryProvider({
    url : 'https://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer',
	enablePickFeatures: false
}),		     
		 
		 baseLayerPicker: true,
	     terrainProviderViewModels : terrainProviderViewModels
		 
     });
	 
     viewer.clock.shouldAnimate = false;
	 viewer.scene.globe.enableLighting = false;
     viewer.clock.startTime = Cesium.JulianDate.fromIso8601("2019-08-20T12:00:00Z");
     viewer.clock.stopTime = Cesium.JulianDate.fromIso8601("2019-08-20T12:20:00Z");
     viewer.clock.currentTime = Cesium.JulianDate.fromIso8601("2019-08-20T12:00:00Z");
	 document.getElementById("legend").style.display = "none"; //defining legends hidden by default
	 document.getElementById("biolegend").style.display = "none";
	 document.getElementById("foodlegend").style.display = "none";
    //////////////////////////////////////////////////////////////////////////
    // Configuring the camera
    //////////////////////////////////////////////////////////////////////////
var initialPosition = Cesium.Cartesian3.fromDegrees(9.306042, 48.919172, 350);
     var initialOrientation = new Cesium.HeadingPitchRoll.fromDegrees(78, -25, 0);
     var homeCameraView = {
         destination : initialPosition,
         orientation : {
            heading : initialOrientation.heading,
            pitch : initialOrientation.pitch,
            roll : initialOrientation.roll
         }
      };
    // // Set the initial view
     viewer.scene.camera.setView(homeCameraView);
	// set home button to initial view 
	 
	 viewer.homeButton.viewModel.command.beforeExecute.addEventListener(function (e) {
        e.cancel = true;
         viewer.scene.camera.flyTo(homeCameraView);
		 document.getElementById("selectscenario").selectedIndex = 0;
     });
	viewer.camera.changed.addEventListener(function() {

  var deg = Math.round( Cesium.Math.toDegrees(viewer.camera.heading))
  console.log('Heading:', deg)

  var deg = Math.round( Cesium.Math.toDegrees(viewer.camera.pitch))
  console.log('Pitch:', deg)
  
  var deg = Math.round( Cesium.Math.toDegrees(viewer.camera.roll))
  console.log('Roll:', deg)

  
});
var geocoder = viewer.geocoder.viewModel;
var selectscenario = document.getElementById('selectscenario');
    function setscenario() {
	 var selectedscenario = selectscenario.options[selectscenario.selectedIndex].value;
	 if (selectedscenario === 'Affalterbach') {
geocoder.searchText = "9.322672, 48.920187, 700";
geocoder.flightDuration = 5;
geocoder.search();} 
	 else if (selectedscenario === 'Aldingen') {
geocoder.searchText = "9.252892, 48.865336, 700";
geocoder.flightDuration = 5;
geocoder.search();}
 else if (selectedscenario === 'Asperg') {
geocoder.searchText = "9.141226, 48.905069, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Aurich') {
geocoder.searchText = "8.946047, 48.913813, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Benningen') {
geocoder.searchText = "9.240017, 48.942798, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Besigheim') {
geocoder.searchText = "9.144831, 48.998353, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Bietigheim') {
geocoder.searchText = "9.124918, 48.957679, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Bissingen') {
geocoder.searchText = "9.099340, 48.943362, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Bönnigheim') {
geocoder.searchText = "9.094191, 49.039106, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Ditzingen') {
geocoder.searchText = "9.070072, 48.826701, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Eberdingen') {
geocoder.searchText = "8.966603, 48.878687, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Ensingen') {
geocoder.searchText = "8.949866, 48.968301, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Enzweihingen') {
geocoder.searchText = "8.983641, 48.917085, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Erdmannshausen') {
geocoder.searchText = "9.297180, 48.942601, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Erligheim') {
geocoder.searchText = "9.099255, 49.019982, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Freudental') {
geocoder.searchText = "9.060030, 49.007897, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Gemmrigheim') {
geocoder.searchText = "9.157791, 49.025488, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Gerlingen') {
geocoder.searchText = "9.066982, 48.799599, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Gronau') {
geocoder.searchText = "9.339477, 49.033306, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Großbottwar') {
geocoder.searchText = "9.297867, 49.001647, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Großingersheim') {
geocoder.searchText = "9.181308, 48.961557, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Großsachsenheim') {
geocoder.searchText = "9.069214, 48.959454, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Gündelbach') {
geocoder.searchText = "8.942785, 48.993594, 700"; 
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Häfnerhaslach') {
geocoder.searchText = "8.919954, 49.025206, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Heimerdingen') {
geocoder.searchText = "8.981667, 48.852009, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Hemmingen') {
geocoder.searchText = "9.035182, 48.864743, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Hessigheim') {
geocoder.searchText = "9.186587, 48.995087, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Hirschlanden') {
geocoder.searchText = "9.041362, 48.836701, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Hochberg') {
geocoder.searchText = "9.282289, 48.886279, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Hochdorf(Eberdingen)') {
geocoder.searchText = "9.000077, 48.886364, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Hochdorf(Remseck)') {
geocoder.searchText = "9.296408, 48.897932, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'HofundLembach') {
geocoder.searchText = "9.313488, 49.009558, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Hofen') {
geocoder.searchText = "9.120818, 49.024661, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Hohenhaslach') {
geocoder.searchText = "9.018874, 48.999817, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Hohenstein') {
geocoder.searchText = "9.121184, 49.039500, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Höpfigheim') {
geocoder.searchText = "9.243751, 48.980555, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Horrheim') {
geocoder.searchText = "8.988061, 48.977964, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Kirchheim') {
geocoder.searchText = "9.147062, 49.039922, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Kleinbottwar') {
geocoder.searchText = "9.288812, 48.979625, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Kleinglattbach') {
geocoder.searchText = "8.969779, 48.951254, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Kleiningersheim') {
geocoder.searchText = "9.200536, 48.974995, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Kleinsachsenheim') {
geocoder.searchText = "9.071403, 48.969794, 700";
geocoder.flightDuration = 5;
geocoder.search();}
 else if (selectedscenario === 'Löchgau') {
geocoder.searchText = "9.109511, 49.001534, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Marbach') {
geocoder.searchText = "9.261646, 48.938119, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Markgrönningen') {
geocoder.searchText = "9.084578, 48.903659, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Möglingen') {
geocoder.searchText = "9.130197, 48.888762, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Mundelsheim') {
geocoder.searchText = "9.209633, 48.996945, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Murr') {
geocoder.searchText = "9.255123, 48.960609, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Neckargröningen') {
geocoder.searchText = "9.273362, 48.877361, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Neckarrems') {
geocoder.searchText = "9.279370, 48.869994, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Nussdorf') {
geocoder.searchText = "8.940296, 48.894688, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Oberriexingen') {
geocoder.searchText = "9.024110, 48.927716, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Oberstenfeld') {
geocoder.searchText = "9.322629, 49.023433, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Ochsenbach') {
geocoder.searchText = "8.983254, 49.020450, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Ottmarsheim') {
geocoder.searchText = "9.204526, 49.016510, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Pleidelsheim') {
geocoder.searchText = "9.202638, 48.958017, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Rielingshausen') {
geocoder.searchText = "9.329710, 48.960638, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Riet') {
geocoder.searchText = "8.971796, 48.893531, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Roßwag') {
geocoder.searchText = "8.914676, 48.935272, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Schöckingen') {
geocoder.searchText = "9.028401, 48.846163, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Schwieberdingen') {
geocoder.searchText = "9.076896, 48.875046, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Sersheim') {
geocoder.searchText = "9.012909, 48.957735, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Spielberg') {
geocoder.searchText = "8.999734, 49.016876, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Steinheim') {
geocoder.searchText = "9.276237, 48.967372, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Vaihingen') {
geocoder.searchText = "8.962269, 48.932932, 700";
geocoder.flightDuration = 5;
geocoder.search();}	
 else if (selectedscenario === 'Walheim') {
geocoder.searchText = "9.151869, 49.011246, 700";
geocoder.flightDuration = 5;
geocoder.search();}				
 else if (selectedscenario === 'Winzerhausen') {
geocoder.searchText = "9.265199, 49.023704, 700";
geocoder.flightDuration = 5;
geocoder.search();}						
	 }
	selectscenario.addEventListener('change', setscenario);
    //////////////////////////////////////////////////////////////////////////
    // Load 3D Tileset
    //////////////////////////////////////////////////////////////////////////

   
	var building = viewer.scene.primitives.add(new Cesium.Cesium3DTileset({url: 
	'https://w2.iaf-ex.hft-stuttgart.de/CesiumData/3DTiles/Buildings/BuildingSolid/LKRLudwigsburg/tileset.json'}));

	var roofsurface = viewer.scene.primitives.add(new Cesium.Cesium3DTileset({url: 
	'https://w2.iaf-ex.hft-stuttgart.de/CesiumData/3DTiles/Buildings/RoofSurface/LKRLudwigsburg/tileset.json'}));
	var roofdefaultstyle = new Cesium.Cesium3DTileStyle({color : "color('#990000')"});
		roofsurface.style = roofdefaultstyle;
      // set roof height and load roof tile 
				roofsurface.readyPromise.then(function(tileset) {
                 height = 0.02;
                 viewer.scene.primitives.add(tileset);
                 var cartographic = Cesium.Cartographic.fromCartesian(tileset.boundingSphere.center);
                 var surface = Cesium.Cartesian3.fromRadians(cartographic.longitude, cartographic.latitude, 0.0);
                 var offset = Cesium.Cartesian3.fromRadians(cartographic.longitude, cartographic.latitude, height);
                 var translation = Cesium.Cartesian3.subtract(offset, surface, new Cesium.Cartesian3());
                 tileset.modelMatrix = Cesium.Matrix4.fromTranslation(translation);
					console.log(error);
             });
			roofsurface.show =true;
	var landuse = viewer.scene.primitives.add(new Cesium.Cesium3DTileset({url: 'https://w2.iaf-ex.hft-stuttgart.de/CesiumData/3DTiles/Landuse/LKRLudwigsburg/tileset.json'}));
	
	 

	landuse.show = false;
		
	
	function showbuildings() {
	 	 if (document.getElementById('buildings').checked) {building.show = true; 
	roofsurface.show = true; 
	} 
	 else {building.show = false; 
	roofsurface.show = false;}
	 }
	 
	       // Style landuse Tileset
 	 
	 var landusestyle = new Cesium.Cesium3DTileStyle({
         color : {
            conditions : [
					["${LU_Class} === 'Settlement Area'", "color('#FFFF008C')"],
					["${LU_Class} === 'Open Plot'", "color('#FFC3008C')"],
                    ["${LU_Class} === 'Traffic Area'", "color('#8888888C')"],
                    ["${LU_Class} === 'Vegetation'", "color('#44EE0D8C')"],
                    ["${LU_Class} === 'Water Body'", "color('#0DC2EE8C')"],
                   ]
         },
		 show: true
     });
	 
	 
	  var bioenergystyle = new Cesium.Cesium3DTileStyle({
         color : {
            conditions : [
					["(${t_bionrg_p} === 0)", "color('#8000008C')"],
					["(${t_bionrg_p} > 0)  && (${t_bionrg_p} < 50)", "color('#FF00008C')"],
					["(${t_bionrg_p} >= 50)  && (${t_bionrg_p} < 150)", "color('#FFA5008C')"],
                    ["(${t_bionrg_p} >= 150) && (${t_bionrg_p} < 350)", "color('#FFFF008C')"],
                    ["(${t_bionrg_p} >= 350) && (${t_bionrg_p} < 650)", "color('#00FF008C')"],
                    ["(${t_bionrg_p} >= 650)", "color('#00A3008C')"]
                   ]
         },
		 show: true
     });
	 
	 var foodpotentialstyle = new Cesium.Cesium3DTileStyle({
         color : {
            conditions : [
					["(${t_food_p} === 0)", "color('#A110598C')"],
					["(${t_food_p} > 0)  && (${t_food_p} < 50000)", "color('#FF00808C')"],
					["(${t_food_p} >= 50000)  && (${t_food_p} < 100000)", "color('#916D808C')"],
                    ["(${t_food_p} >= 100000) && (${t_food_p} < 200000)", "color('#00FF808C')"],
                    ["(${t_food_p} >= 200000) && (${t_food_p} < 300000)", "color('#0089BA8C')"],
                    ["(${t_food_p} >= 300000)", "color('#0000FF8C')"]
                   ]
         },
		 show: true
     });
	 
	 
	 

     function showlanduse() {
        if (document.getElementById('landuse').checked) {
             landuse.show = true;
			 landuse.style = landusestyle;
			 document.getElementById("legend").style.display = "block";
			 document.getElementById("biolegend").style.display = "none";
			  document.getElementById("foodlegend").style.display = "none";
			 } 
		else {
              landuse.show = false;
			  document.getElementById("legend").style.display = "none";
			  document.getElementById("biolegend").style.display = "none";
			  document.getElementById("foodlegend").style.display = "none";
			 }
        }

		
		function showbioenergypotential(){
	 if (document.getElementById('foodpotential').checked) {
		 alert("At a time either food potential analysis or bioenergy potential analysis is possible. Please uncheck one of the two analysis selection first and then re-select this option.");
  return false;
}
else {
		 if (document.getElementById('landuse').checked) {
        if (document.getElementById('bioenergypotential').checked) {
			
			landuse.show = true;
			 landuse.style = bioenergystyle;
			 document.getElementById("biolegend").style.display = "block";
			 document.getElementById("foodlegend").style.display = "none";
			 document.getElementById("legend").style.display = "none";
			 		      } 
		else {
			landuse.show = true;
			  landuse.style = landusestyle;
			  document.getElementById("biolegend").style.display = "none";
			  document.getElementById("foodlegend").style.display = "none";
			 document.getElementById("legend").style.display = "block";
			 		      }
        }
			 else {
  alert("Please select the landuse layer under 3D city model first, and then re-select this option.");
  return false;
}
	 }
	 }
	 
	 
	function showfoodpotential(){
	 if (document.getElementById('bioenergypotential').checked) {
		 alert("At a time either food potential analysis or bioenergy potential analysis is possible. Please uncheck one of the two analysis selection first and then re-select this option.");
  return false;
}
else {
		 if (document.getElementById('landuse').checked) {
        if (document.getElementById('foodpotential').checked) {
			
			landuse.show = true;
			 landuse.style = foodpotentialstyle;
			 document.getElementById("biolegend").style.display = "none";
			 document.getElementById("foodlegend").style.display = "block";
			 document.getElementById("legend").style.display = "none";
			 		      } 
		else {
			landuse.show = true;
			  landuse.style = landusestyle;
			  document.getElementById("biolegend").style.display = "none";
			  document.getElementById("foodlegend").style.display = "none";
			 document.getElementById("legend").style.display = "block";
			 		      }
        }
			 else {
  alert("Please select the landuse layer under 3D city model first, and then re-select this option.");
  return false;
}
	 }
	 }
		
		
		
    //////////////////////////////////////////////////////////////////////////
    // Style 3D Tileset
    //////////////////////////////////////////////////////////////////////////
	
	  var buildingdefaultstyle = new Cesium.Cesium3DTileStyle({
         color : "color('WHITE')",
		  show: true
     });

	 var heatenergydemandstyle = new Cesium.Cesium3DTileStyle({
         color : {
            conditions : [
                        [' Number(${Sp_Ht_Dmnd}) >= 225', "color('red')"],
                        [' Number(${Sp_Ht_Dmnd}) >= 125', "mix(color('yellow'), color('red'), (Number(${Sp_Ht_Dmnd}) -125) / 125)"],
                        [' Number(${Sp_Ht_Dmnd}) >= 1', "mix(color('green'), color('yellow'), (Number(${Sp_Ht_Dmnd}) ) / 125)"],
                        [' Number(${Sp_Ht_Dmnd}) < 1', "color('#ffffff1A')"],
                        ['true', "color('#ffffff1A')"]
                        ]			
	
         },
		 show: true
     });
	 	
	 var heatdemandstyle = document.getElementById('heatdemand');
     function showheatdemand() {
	 if (document.getElementById('pvpotential').checked) {
		 alert("At a time either of food demand, water demand, heating energy demand or rooftop photovoltaic potential demand analysis is possible. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}
 else if (document.getElementById('fooddemand').checked) {
		 alert("At a time either of food demand, water demand, heating energy demand or rooftop photovoltaic potential demand analysis is possible. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}

else if (document.getElementById('waterdemand').checked) {
		 alert("At a time either of food demand, water demand, heating energy demand or rooftop photovoltaic potential demand analysis is possible. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}

else

		 {
	 if (document.getElementById('buildings').checked) {
        if (heatdemandstyle.checked) {
			
			 roofsurface.show = false;
             building.style = heatenergydemandstyle;
			 document.getElementById("heat-demand-legend").style.display = "block";
			 		      } 
		else {
			  
			  roofsurface.show = true;
              building.style = buildingdefaultstyle;
			  roofsurface.style = roofdefaultstyle;
			  document.getElementById("heat-demand-legend").style.display = "none";
			 		      }
        }
	 else {
  alert("Please select the buildings layer under 3D city model first, and then re-select this option.");
  return false;
}
	 }
	 }
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 var totalfooddemandstyle = new Cesium.Cesium3DTileStyle({
         color : {
            conditions : [
					["(${T_Fd_Dmnd} === 0)", "color('#ffffff1A')"],
					["(${T_Fd_Dmnd} > 0)  && (${T_Fd_Dmnd} < 5000)", "color('#00FF80')"],
                    ["(${T_Fd_Dmnd} >= 5000) && (${T_Fd_Dmnd} < 10000)", "color('#00C49D')"],
                    ["(${T_Fd_Dmnd} >= 10000) && (${T_Fd_Dmnd} < 15000)", "color('#0089BA')"],
                    ["(${T_Fd_Dmnd} >= 15000) && (${T_Fd_Dmnd} < 20000)", "color('#0062CE')"],
                    ["(${T_Fd_Dmnd} >= 20000)", "color('#0000FF')"]
             ]	
	
         },
		 show: true
     });
	 	
	 var fooddemandstyle = document.getElementById('fooddemand');
     function showfooddemand() {
	 if (document.getElementById('pvpotential').checked) {
		 alert("At a time either of food demand, water demand, heating energy demand or rooftop photovoltaic potential demand analysis is possible. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}
 else if (document.getElementById('heatdemand').checked) {
		 alert("At a time either of food demand, water demand, heating energy demand or rooftop photovoltaic potential demand analysis is possible. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}

else if (document.getElementById('waterdemand').checked) {
		 alert("At a time either of food demand, water demand, heating energy demand or rooftop photovoltaic potential demand analysis is possible. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}

else

		 {
	 if (document.getElementById('buildings').checked) {
        if (fooddemandstyle.checked) {
			
			 roofsurface.show = false;
             building.style = totalfooddemandstyle;
			 document.getElementById("food-demand-legend").style.display = "block";
			 		      } 
		else {
			
			  roofsurface.show = true;
              building.style = buildingdefaultstyle;
			  roofsurface.style = roofdefaultstyle;
			  document.getElementById("food-demand-legend").style.display = "none";
			 		      }
        }
	 else {
  alert("Please select the buildings layer under 3D city model first, and then re-select this option.");
  return false;
}
	 }
	 }
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 var totalwaterdemandstyle = new Cesium.Cesium3DTileStyle({
         color : {
            conditions : [
					["(${Wtr_Dmnd} === 0)", "color('#ffffff1A')"],
					["(${Wtr_Dmnd} > 0)  && (${Wtr_Dmnd} < 500)", "color('#33ACFF')"],
                    ["(${Wtr_Dmnd} >= 500) && (${Wtr_Dmnd} < 1000)", "color('#2AFF00')"],
                    ["(${Wtr_Dmnd} >= 1000) && (${Wtr_Dmnd} < 5000)", "color('#FFFF00')"],
                    ["(${Wtr_Dmnd} >= 5000) && (${Wtr_Dmnd} < 10000)", "color('#FFA200')"],
                    ["(${Wtr_Dmnd} >= 10000)", "color('#FF0000')"]
             ]

	
	
         },
		 show: true
     });
	 	
	 var waterdemandstyle = document.getElementById('waterdemand');
     function showwaterdemand() {
	 if (document.getElementById('pvpotential').checked) {
		 alert("At a time either of food demand, water demand, heating energy demand or rooftop photovoltaic potential demand analysis is possible. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}
 else if (document.getElementById('fooddemand').checked) {
		 alert("At a time either of food demand, water demand, heating energy demand or rooftop photovoltaic potential demand analysis is possible. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}

else if (document.getElementById('heatdemand').checked) {
		 alert("At a time either of food demand, water demand, heating energy demand or rooftop photovoltaic potential demand analysis is possible. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}

else

		 {
	 if (document.getElementById('buildings').checked) {
        if (waterdemandstyle.checked) {
			
			 roofsurface.show = false;
             building.style = totalwaterdemandstyle;
			 document.getElementById("water-demand-legend").style.display = "block";
			 		      } 
		else {
		
			  roofsurface.show = true;
              building.style = buildingdefaultstyle;
			  roofsurface.style = roofdefaultstyle;
			  document.getElementById("water-demand-legend").style.display = "none";
			 		      }
        }
	 else {
  alert("Please select the buildings layer under 3D city model first, and then re-select this option.");
  return false;
}
	 }
	 }
	 
	 
	  var roofPVstyle = new Cesium.Cesium3DTileStyle({
         color : {
            conditions : [
                        [' Number(${PV_potential_yield}) >= 10', "color('green')"],
                          [' Number(${PV_potential_yield}) >= 5', "mix(color('yellow'), color('green'), (Number(${PV_potential_yield}) -5) /5)"],
                          [' Number(${PV_potential_yield}) >= 1', "mix(color('red'), color('yellow'), (Number(${PV_potential_yield}) ) /5)"],
                          [' Number(${PV_potential_yield}) < 1', "color('red')"],
                          ['true', 'rgb(0, 0, 0)']
                      ] 			
	
         },
		 show: true
     });
		
	var pvpotentialstyle = document.getElementById('pvpotential');
     function showpvpotential(){
	 if (document.getElementById('heatdemand').checked) {
		 alert("At a time either of food demand, water demand, heat energy demand or PV potential demand can be selected. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}


else if (document.getElementById('fooddemand').checked) {
		 alert("At a time either of food demand, water demand, heat energy demand or PV potential demand can be selected. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}

else if (document.getElementById('waterdemand').checked) {
		 alert("At a time either of food demand, water demand, heat energy demand or PV potential demand can be selected. Please uncheck the current analysis selection first and then re-select this option.");
  return false;
}

else {
		 if (document.getElementById('buildings').checked) {
        if (pvpotentialstyle.checked) {
			
			roofsurface.show = true;
			 roofsurface.style = roofPVstyle;
             document.getElementById("pv-potential-legend").style.display = "block";
			 		      } 
		else {
		
			roofsurface.show = true;
			roofsurface.style = roofdefaultstyle;
              document.getElementById("pv-potential-legend").style.display = "none";
			 		      }
        }
			 else {
  alert("Please select the buildings layer under 3D city model first, and then re-select this option.");
  return false;
}
	 }
	 }
	 

    //////////////////////////////////////////////////////////////////////////
    // Custom mouse interaction for highlighting and selecting
    //////////////////////////////////////////////////////////////////////////


//Selecting a Building
var Pickers_3DTile_Activated = true;
// Information about the currently highlighted feature
function active3DTilePicker() {
    var highlighted = {
        feature: undefined,
        originalColor: new Cesium.Color()
    };
    // Information about the currently selected feature
    var selected = {
        feature: undefined,
        originalColor: new Cesium.Color()
    };

    // An entity object which will hold info about the currently selected feature for infobox display
    var selectedEntity = new Cesium.Entity();

    // Get default left click handler for when a feature is not picked on left click
    var clickHandler = viewer.screenSpaceEventHandler.getInputAction(Cesium.ScreenSpaceEventType.LEFT_CLICK);
    // Color a feature yellow on hover.
    viewer.screenSpaceEventHandler.setInputAction(function onMouseMove(movement) {
        if (Pickers_3DTile_Activated) {
            // If a feature was previously highlighted, undo the highlight
            if (Cesium.defined(highlighted.feature)) {
                highlighted.feature.color = highlighted.originalColor;
                highlighted.feature = undefined;
            }
            // Pick a new feature
            var picked3DtileFeature = viewer.scene.pick(movement.endPosition);
            if (!Cesium.defined(picked3DtileFeature)) {
                               return;
            }
  
            // Highlight the feature if it's not already selected.
            if (picked3DtileFeature !== selected.feature) {
                highlighted.feature = picked3DtileFeature;
                Cesium.Color.clone(picked3DtileFeature.color, highlighted.originalColor);
                picked3DtileFeature.color = Cesium.Color.BLANCHEDALMOND;
            }
        }
    }, Cesium.ScreenSpaceEventType.MOUSE_MOVE);

    // Color a feature on selection and show metadata in the InfoBox.
    viewer.screenSpaceEventHandler.setInputAction(function onLeftClick(movement) {

        if (Pickers_3DTile_Activated) {
            // If a feature was previously selected, undo the highlight
            if (Cesium.defined(selected.feature)) {
                selected.feature.color = selected.originalColor;
                selected.feature = undefined;
                var options = null;
            }
            // Pick a new feature
            var picked3DtileFeature = viewer.scene.pick(movement.position);
            if (!Cesium.defined(picked3DtileFeature)) {
                clickHandler(movement);
                return;
            }
            // Select the feature if it's not already selected
            if (selected.feature === picked3DtileFeature) {
                return;
            }
            selected.feature = picked3DtileFeature;
            // Save the selected feature's original color
            if (picked3DtileFeature === highlighted.feature) {
                Cesium.Color.clone(highlighted.originalColor, selected.originalColor);
                highlighted.feature = undefined;
            } else {
                Cesium.Color.clone(picked3DtileFeature.color, selected.originalColor);
            }
            // Highlight newly selected feature
            picked3DtileFeature.color = Cesium.Color.BLANCHEDALMOND;
            // Set feature infobox description - if condition is for different info box for different entities such as building solids, roofs, landuse etc
			
			if (picked3DtileFeature.getProperty('Semantic') === "Building") {
                
			
            var featureName = "Information Box";
            selectedEntity.name = featureName;
            selectedEntity.description = 'Loading <div class="cesium-infoBox-loading"></div>';

            viewer.selectedEntity = selectedEntity;
            selectedEntity.description =
                '<table class="cesium-infoBox-defaultTable"><tbody>' +
                '<tr><th>Building ID</th><td>' + picked3DtileFeature.getProperty('gml_id') + '</td></tr>' +
                '<tr><th>Building Type</th><td>' + picked3DtileFeature.getProperty('Bldg_Type') + '</td></tr>' +
				'<tr><th>Building Height</th><td>' + picked3DtileFeature.getProperty('citygml_measured_height') + ' ' + 'm' + '</td></tr>' +
                '<tr><th>Year of Construction</th><td>' + picked3DtileFeature.getProperty('citygml_ye') + '</td></tr>' +
				'<tr><th>Building Storeys Above Ground</th><td>' + picked3DtileFeature.getProperty('Stry_Nmbr') + '</td></tr>' +
				'<tr><th>Average Storey Height</th><td>' + picked3DtileFeature.getProperty('AvgStry_Ht') + ' ' + 'm' + '</td></tr>' +				
				'<tr><th>Estimated Total Housing Units</th><td>' + picked3DtileFeature.getProperty('Nmbr_House') + '</td></tr>' +
				'<tr><th>Estimated Total Residents</th><td>' + picked3DtileFeature.getProperty('Nmbr_Occ') + '</td></tr>' +
				'<tr><th>Location</th><td>' + picked3DtileFeature.getProperty('FWE_Area') + '</td></tr>' +
				'<tr><th>Region</th><td>' + 'Landkreis Ludwigsburg' +  '</td></tr>' +
				'<tr><th>Vegetal Food Demand</th><td>' + picked3DtileFeature.getProperty('Fd_Dmnd_V') + ' ' + '10^3 kcal/yr' + '</td></tr>' +
				'<tr><th>Animal Food Demand</th><td>' + picked3DtileFeature.getProperty('Fd_Dmnd_A') + ' ' + '10^3 kcal/yr' + '</td></tr>' +
				'<tr><th>Total Food Demand</th><td>' + picked3DtileFeature.getProperty('T_Fd_Dmnd') + ' ' + '10^3 kcal/yr' + '</td></tr>' +
				'<tr><th>Water Demand</th><td>' + picked3DtileFeature.getProperty('Wtr_Dmnd') + ' ' + 'cu.m/yr' + '</td></tr>' +
				'<tr><th>Specific Space Heating Demand</th><td>' + picked3DtileFeature.getProperty('Sp_Ht_Dmnd') + ' ' + 'kWh/m²*yr' + '</td></tr>' +
				'</tbody></table>';

            console.log(picked3DtileFeature.getProperty('Semantic'));}
			
			
			else if (picked3DtileFeature.getProperty('Semantic') === "RoofSurface") {
                
			
            var featureName = "Information Box";
            selectedEntity.name = featureName;
            selectedEntity.description = 'Loading <div class="cesium-infoBox-loading"></div>';

            viewer.selectedEntity = selectedEntity;
            selectedEntity.description =
                '<table class="cesium-infoBox-defaultTable"><tbody>' +
                '<tr><th>Building ID</th><td>' + picked3DtileFeature.getProperty('gml_id') + '</td></tr>' +
				'<tr><th>Building Parent ID</th><td>' + picked3DtileFeature.getProperty('gml_parent_id') + '</td></tr>' +
				'<tr><th>Roof Area </th><td>' + picked3DtileFeature.getProperty('roof_area') + ' ' + 'm²' + '</td></tr>' +
            	'<tr><th>Photovoltaic Potential</th><td>' + picked3DtileFeature.getProperty('PV_potential_yield') + ' ' + 'MWh/yr' + '</td></tr>' +
				'</tbody></table>';

            console.log(picked3DtileFeature.getProperty('Semantic'));}
			
			else if (picked3DtileFeature.getProperty('Semantic') === "LandUse") {
                
			
            var featureName = "Information Box";
            selectedEntity.name = featureName;
            selectedEntity.description = 'Loading <div class="cesium-infoBox-loading"></div>';

            viewer.selectedEntity = selectedEntity;
            selectedEntity.description =
                '<table class="cesium-infoBox-defaultTable"><tbody>' +
                '<tr><th>LandUse ID</th><td>' + picked3DtileFeature.getProperty('LU_ID') + '</td></tr>' +
                '<tr><th>LandUse Type</th><td>' + picked3DtileFeature.getProperty('LU_Class') + '</td></tr>' +
				'<tr><th>Polygon Area </th><td>' + picked3DtileFeature.getProperty('Shape_Area') + ' ' + 'm²' + '</td></tr>' +
                '<tr><th>Crop Type</th><td>' + picked3DtileFeature.getProperty('LU_CropTyp') + '</td></tr>' +
                '<tr><th>Soil Type</th><td>' + picked3DtileFeature.getProperty('LU_SoilTyp') + '</td></tr>' +
				'<tr><th>Location</th><td>' + picked3DtileFeature.getProperty('Area_Name') + '</td></tr>' +
				'<tr><th>Region</th><td>' + picked3DtileFeature.getProperty('Systm_Name') +  '</td></tr>' +
				'<tr><th>Technical Bioenergy Potential</th><td>' + picked3DtileFeature.getProperty('t_bionrg_p') + ' ' + 'GJ/yr' + '</td></tr>' +
				'<tr><th>Bioenergy2Electricity Potential</th><td>' + picked3DtileFeature.getProperty('nrg_p_elct') + ' ' + 'GJ/yr' + '</td></tr>' +
				'<tr><th>Bioenerg2Thermal Potential</th><td>' + picked3DtileFeature.getProperty('nrg_p_thrm') + ' ' + 'GJ/yr' + '</td></tr>' +
			    '<tr><th>Vegetal Food Potential</th><td>' + picked3DtileFeature.getProperty('veg_food_p') + ' ' + '10^3 kcal/yr' + '</td></tr>' +
				'<tr><th>Animal Food Potential</th><td>' + picked3DtileFeature.getProperty('anm_food_p') + ' ' + '10^3 kcal/yr' + '</td></tr>' +
				'<tr><th>Total Food Potential</th><td>' + picked3DtileFeature.getProperty('t_food_p') + ' ' + '10^3 kcal/yr' + '</td></tr>' +
				'</tbody></table>';

            console.log(picked3DtileFeature.getProperty('Semantic'));}
			
			
			else
				{                	
            var featureName = "Information Box";
            selectedEntity.name = featureName;
            selectedEntity.description = 'Loading <div class="cesium-infoBox-loading"></div>';

            viewer.selectedEntity = selectedEntity;
            selectedEntity.description =
                 '<table class="cesium-infoBox-defaultTable"><tbody>' +
                '<tr><th>Building ID</th><td>' + picked3DtileFeature.getProperty('gml_id') + '</td></tr>' +
				'<tr><th>Building Parent ID</th><td>' + picked3DtileFeature.getProperty('gml_parent_id') + '</td></tr>' +
				'<tr><th>Installation Area </th><td>' + picked3DtileFeature.getProperty('area') + ' ' + 'm²' + '</td></tr>' +
				'</tbody></table>';

            console.log(picked3DtileFeature.getProperty('Semantic'));}
			
			var arrow = document.getElementById('arrow');
		var arrowPosition = 10 + ((Number(picked3DtileFeature.getProperty('Sp_Ht_Dmnd')) / 250) * 465);
		if (Number(picked3DtileFeature.getProperty('Sp_Ht_Dmnd')) >= 250) {
			arrowPosition = 465;
		}
		console.log("Width: " + arrow.style.width);
		arrow.style.left = arrowPosition + "px";
		console.log("position left: : " + 10 + ((Number(picked3DtileFeature.getProperty('Sp_Ht_Dmnd')) / 250) * 100) * 465 + "px");
		arrow.style.visibility = 'visible';
		}
    }, Cesium.ScreenSpaceEventType.LEFT_CLICK);
}

active3DTilePicker();