| 1 | // Array element swap code by Richard Scarrott
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| 2 | // http://jsperf.com/array-prototype-move
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| 3 | Array.prototype.move = function(pos1, pos2) {
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| 4 | // local variables
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| 5 | var i, tmp;
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| 6 | // cast input parameters to integers
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| 7 | pos1 = parseInt(pos1, 10);
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| 8 | pos2 = parseInt(pos2, 10);
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| 9 | // if positions are different and inside array
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| 10 | if (pos1 !== pos2 && 0 <= pos1 && pos1 <= this.length && 0 <= pos2 && pos2 <= this.length) {
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| 11 | // save element from position 1
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| 12 | tmp = this[pos1];
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| 13 | // move element down and shift other elements up
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| 14 | if (pos1 < pos2) {
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| 15 | for (i = pos1; i < pos2; i++) {
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| 16 | this[i] = this[i + 1];
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| 17 | }
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| 18 | }
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| 19 | // move element up and shift other elements down
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| 20 | else {
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| 21 | for (i = pos1; i > pos2; i--) {
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| 22 | this[i] = this[i - 1];
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| 23 | }
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| 24 | }
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| 25 | // put element from position 1 to destination
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| 26 | this[pos2] = tmp;
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| 27 | }
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| 28 | }
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| 29 |
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| 30 | var panoContainer, camera, scene, renderer, projector;
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| 31 |
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| 32 | var mouse = { x: 0, y: 0 };
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| 33 |
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| 34 | var fov = 70, maxFov = 90, minFov = 15,
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| 35 | width,height, aspect,
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| 36 | isUserInteracting = false,
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| 37 | onMouseDownMouseX = 0, onMouseDownMouseY = 0,
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| 38 | lon = 0, onMouseDownLon = 0,
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| 39 | lat = 0, onMouseDownLat = 0,
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| 40 | phi = 0, theta = 0,
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| 41 | mesh, sphereRadius = 500,
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| 42 | meshRotation = Math.PI / 2 * 3,
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| 43 | panoSelectionRadius = 40;
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| 44 |
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| 45 | var panoDocList = new Array();
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| 46 | panoDocList.ids = new Array();
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| 47 | panoDocList.getDocByIndex = function(index) {
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| 48 | return panoDocList[panoDocList.ids[index]];
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| 49 | };
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| 50 |
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| 51 | var nearbyPanoList = new Array();
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| 52 | nearbyPanoList.ids = new Array();
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| 53 |
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| 54 | function initPanoramaViewer() {
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| 55 | //Creating the document list to store data about the panoramams
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| 56 | var jsonNodeDiv = $("#jsonPanoNodes");
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| 57 | if(jsonNodeDiv.length) {
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| 58 | var jsonNodehtml = jsonNodeDiv.html();
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| 59 | var jsonNodes = eval(jsonNodehtml);
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| 60 | if(jsonNodes && jsonNodes.length > 0) {
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| 61 | for(var i = 0; i < jsonNodes.length; i++) {
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| 62 | panoDocList[jsonNodes[i].nodeID] = jsonNodes[i];
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| 63 | panoDocList.ids.push(jsonNodes[i].nodeID);
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| 64 | }
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| 65 | } else {
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| 66 | $("pano-container").css({visibility:"hidden", height:"0px"});
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| 67 | }
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| 68 | }
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| 69 |
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| 70 | panoContainer = document.getElementById( 'pano-container' );
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| 71 | // Creating the camera
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| 72 | // Setting width and height variables as the container dimensions changes when fov is changed
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| 73 | if(panoContainer.className == "pano_canvas_fullscreen") {
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| 74 | width = window.innerWidth;
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| 75 | height = window.innerHeight;
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| 76 | aspect = width / height;
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| 77 | } else if(panoContainer.className == "pano_canvas_half") {
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| 78 | width = panoContainer.offsetWidth;
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| 79 | height = panoContainer.offsetHeight;
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| 80 | aspect = width / height;
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| 81 | }
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| 82 | camera = new THREE.PerspectiveCamera( fov, aspect, 1, 1100 );
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| 83 | camera.target = new THREE.Vector3(0, 0, 0 );
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| 84 |
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| 85 | // Creating the scene
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| 86 | scene = new THREE.Scene();
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| 87 |
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| 88 | projector = new THREE.Projector();
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| 89 |
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| 90 | var sourceFile = gs.documentMetadata[panoDocList.ids[0]].Image;
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| 91 | var assocfilepath = gs.documentMetadata[panoDocList.ids[0]].assocfilepath;
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| 92 | var httpPath = gs.collectionMetadata.httpPath;
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| 93 |
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| 94 | var fullPanoURL = httpPath + "/index/assoc/" + assocfilepath + "/" + sourceFile;
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| 95 |
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| 96 | // Creating a sphere with the panorama applied as a texture
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| 97 | if (Detector.webgl) {
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| 98 | mesh = new THREE.Mesh( new THREE.SphereGeometry( sphereRadius, 60, 40 ), new THREE.MeshBasicMaterial( { map: THREE.ImageUtils.loadTexture( fullPanoURL ), wireframe: false, overdraw: true, opacity:0 } ) );
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| 99 | } else {
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| 100 | mesh = new THREE.Mesh( new THREE.SphereGeometry( sphereRadius, 30, 20 ), new THREE.MeshBasicMaterial( { map: THREE.ImageUtils.loadTexture( fullPanoURL ), wireframe: false, overdraw: true, opacity:0 } ) );
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| 101 | }
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| 102 |
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| 103 | mesh.scale.x = -1;
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| 104 | // Adding the sphere to the scene
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| 105 | scene.add( mesh );
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| 106 |
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| 107 | switchPanorama(panoDocList.ids[0]);
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| 108 |
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| 109 | renderer = Detector.webgl? new THREE.WebGLRenderer(): new THREE.CanvasRenderer();
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| 110 | renderer.setSize(width,height);
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| 111 |
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| 112 | panoContainer.appendChild( renderer.domElement );
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| 113 |
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| 114 | // Adding in Mouse events
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| 115 | panoContainer.addEventListener( 'mousedown', onDocumentMouseDown, false );
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| 116 | document.addEventListener( 'mousemove', onDocumentMouseMove, false );
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| 117 | document.addEventListener( 'mouseup', onDocumentMouseUp, false );
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| 118 | panoContainer.addEventListener( 'mousewheel', onDocumentMouseWheel, false );
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| 119 | panoContainer.addEventListener( 'DOMMouseScroll', onDocumentMouseWheel, false);
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| 120 |
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| 121 | if(panoContainer.className == "pano_canvas_fullscreen")
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| 122 | window.addEventListener( 'resize', onWindowResize, false );
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| 123 | }
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| 124 |
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| 125 | function degreesToCoords(degrees, radius) {
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| 126 | return new THREE.Vector3(Math.cos(degrees * Math.PI/180) * radius, 0, Math.sin(degrees * Math.PI/180) * radius);
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| 127 | }
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| 128 |
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| 129 |
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| 130 | function calculateBearing(from, to) {
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| 131 | // x is lat and y is long
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| 132 | var R = 6371; // km
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| 133 | var lat1 = from.x * Math.PI / 180;
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| 134 | var lat2 = to.x * Math.PI / 180;
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| 135 | var dLon = (to.y-from.y) * Math.PI / 180;
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| 136 | var y = Math.sin(dLon) * Math.cos(lat2);
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| 137 | var x = Math.cos(lat1)*Math.sin(lat2) -
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| 138 | Math.sin(lat1)*Math.cos(lat2)*Math.cos(dLon);
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| 139 | var brng = (Math.atan2(y, x)) * 180 / Math.PI;
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| 140 | return (brng + 360) % 360;
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| 141 | }
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| 142 |
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| 143 | function calculateDistance(from, to) {
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| 144 | // x is lat and y is long
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| 145 | var R = 6371; // km
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| 146 | var dLat = (from.x-to.x) * Math.PI / 180;
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| 147 | var dLon = (from.y-to.y) * Math.PI / 180;
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| 148 | var lat1 = from.x * Math.PI / 180;
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| 149 | var lat2 = to.x * Math.PI / 180;
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| 150 |
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| 151 | var a = Math.sin(dLat/2) * Math.sin(dLat/2) +
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| 152 | Math.sin(dLon/2) * Math.sin(dLon/2) * Math.cos(lat1) * Math.cos(lat2);
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| 153 | var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
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| 154 | var d = R * c;
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| 155 | // return distance in metres
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| 156 | return d * 1000;
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| 157 | }
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| 158 |
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| 159 | function switchPanorama( panoramaID, destMarker ) {
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| 160 | // Building the file path
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| 161 | var sourceFile = gs.documentMetadata[panoramaID].Image;
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| 162 | var assocfilepath = gs.documentMetadata[panoramaID].assocfilepath;
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| 163 | var httpPath = gs.collectionMetadata.httpPath;
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| 164 |
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| 165 | var fullPanoURL = httpPath + "/index/assoc/" + assocfilepath + "/" + sourceFile;
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| 166 |
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| 167 | // Creating the material
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| 168 | if (Detector.webgl) {
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| 169 | var texture = new THREE.MeshBasicMaterial( { map: THREE.ImageUtils.loadTexture( fullPanoURL ), opacity: 0 } );
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| 170 | } else {
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| 171 | var texture = new THREE.MeshBasicMaterial( { map: THREE.ImageUtils.loadTexture( fullPanoURL ), opacity: 0, wireframe: false, overdraw: true } );
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| 172 | }
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| 173 |
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| 174 | if (destMarker) {
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| 175 | new TWEEN.Tween(mesh.position).to({x: -destMarker.position.x, y: -destMarker.position.y, z: -destMarker.position.z}, 500).onComplete(function () {
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| 176 | mesh.position = new THREE.Vector3(destMarker.position.x,destMarker.position.y,destMarker.position.z);
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| 177 | new TWEEN.Tween(mesh.position).to({x: 0, y: 0,z: 0},500).start();
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| 178 | }).start();
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| 179 | }
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| 180 |
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| 181 | new TWEEN.Tween(mesh.materials[0]).to({opacity: 0}, 500).onComplete(function () {
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| 182 | // Rotation
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| 183 | if (gs.documentMetadata[panoramaID].Angle) {
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| 184 | var temp = 360 + parseFloat(gs.documentMetadata[panoramaID].Angle);
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| 185 | temp = temp % 360;
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| 186 | console.log(temp);
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| 187 | mesh.rotation.y = meshRotation + (gs.documentMetadata[panoramaID].Angle * Math.PI / 180);
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| 188 | } else if (gs.documentMetadata[panoramaID].cv_rotation)
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| 189 | mesh.rotation.y = meshRotation + (gs.documentMetadata[panoramaID].cv_rotation * Math.PI / 180);
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| 190 | else
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| 191 | mesh.rotation.y = meshRotation;
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| 192 |
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| 193 | mesh.materials[0] = texture;
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| 194 | new TWEEN.Tween(mesh.materials[0]).to({opacity: 1}, 500).start();
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| 195 | }).start();
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| 196 |
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| 197 |
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| 198 | // Checking if there are markers to remove
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| 199 | if (nearbyPanoList.length > 0) {
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| 200 | for(var i = 0; i < nearbyPanoList.length; i++) {
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| 201 | panoContainer.removeChild(nearbyPanoList[i]);
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| 202 | // document.body.appendChild(nearbyPanoList[i]);
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| 203 | nearbyPanoList[i].deactivate();
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| 204 | }
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| 205 | }
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| 206 |
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| 207 | // Clearing the array
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| 208 | nearbyPanoList = new Array();
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| 209 |
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| 210 | // Moving the selected pano to the front of the panolist array
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| 211 | panoDocList.move(panoDocList.ids.indexOf(panoramaID), 0);
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| 212 | panoDocList.ids.move(panoDocList.ids.indexOf(panoramaID), 0);
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| 213 |
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| 214 | var startPanoLonLat = new THREE.Vector3(gs.documentMetadata[panoramaID].Latitude,gs.documentMetadata[panoramaID].Longitude);
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| 215 |
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| 216 | // going through the panolist checking the distance
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| 217 | for(var i = 1; i < panoDocList.ids.length; i++) {
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| 218 | var endPanoLonLat = new THREE.Vector3(gs.documentMetadata[panoDocList.ids[i]].Latitude,gs.documentMetadata[panoDocList.ids[i]].Longitude);
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| 219 | if(calculateDistance(startPanoLonLat,endPanoLonLat) < panoSelectionRadius) {
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| 220 | var bearing = calculateBearing(startPanoLonLat,endPanoLonLat);
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| 221 | var pos = degreesToCoords(bearing, sphereRadius);
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| 222 | var navMarker = NavMarker.create(panoDocList.ids[i],pos);
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| 223 | nearbyPanoList.push(navMarker);
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| 224 | //navMarker.addEventListener('click', switchPanorama(hash), false);
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| 225 | navMarker.addEventListener('click', function(e) {
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| 226 | var sender = (e && e.target) || (window.event && window.event.srcElement);
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| 227 | switchPanorama(sender.hash, sender); }, false);
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| 228 | }
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| 229 | }
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| 230 |
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| 231 | // Going through the new nearbyPanoList and adding in the markers to the scene
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| 232 | for(var i = 0; i < nearbyPanoList.length; i++) {
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| 233 | panoContainer.appendChild(nearbyPanoList[i]);
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| 234 | nearbyPanoList[i].activate();
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| 235 | }
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| 236 |
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| 237 | }
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| 238 |
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| 239 |
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| 240 | function onWindowResize() {
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| 241 | camera.aspect = window.innerWidth / window.innerHeight;
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| 242 | camera.updateProjectionMatrix();
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| 243 |
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| 244 | renderer.setSize( window.innerWidth, window.innerHeight );
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| 245 | }
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| 246 |
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| 247 |
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| 248 | function onDocumentMouseDown( event ) {
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| 249 | event.preventDefault();
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| 250 | isUserInteracting = true;
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| 251 | onPointerDownPointerX = event.clientX;
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| 252 | onPointerDownPointerY = event.clientY;
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| 253 | onPointerDownLon = lon;
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| 254 | onPointerDownLat = lat;
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| 255 |
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| 256 | }
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| 257 |
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| 258 | function onDocumentMouseMove( event ) {
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| 259 | if ( isUserInteracting ) {
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| 260 | lon = ( onPointerDownPointerX - event.clientX ) * 0.1 + onPointerDownLon;
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| 261 | lat = ( event.clientY - onPointerDownPointerY ) * 0.1 + onPointerDownLat;
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| 262 | }
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| 263 | }
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| 264 |
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| 265 | function onDocumentMouseUp( event ) {
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| 266 | var vector = new THREE.Vector3( mouse.x, mouse.y, 0.5 );
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| 267 | projector.unprojectVector( vector, camera );
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| 268 | isUserInteracting = false;
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| 269 | }
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| 270 |
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| 271 | function onDocumentMouseWheel( event ) {
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| 272 | if ( event.wheelDeltaY ) {
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| 273 | // WebKit
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| 274 | fov -= event.wheelDeltaY * 0.05;
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| 275 | } else if ( event.wheelDelta ) {
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| 276 | // Opera / Explorer 9
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| 277 | fov -= event.wheelDelta * 0.05;
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| 278 | } else if ( event.detail ) {
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| 279 | // Firefox
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| 280 | fov += event.detail * 1.0;
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| 281 | }
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| 282 |
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| 283 | if ( fov > maxFov) {
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| 284 | fov = maxFov;
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| 285 | } else if (fov < minFov) {
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| 286 | fov = minFov;
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| 287 | }
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| 288 |
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| 289 | camera.projectionMatrix = THREE.Matrix4.makePerspective( fov, aspect , 1, 1100 );
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| 290 | _render();
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| 291 | }
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| 292 |
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| 293 | function _animate() {
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| 294 | requestAnimationFrame( _animate );
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| 295 | _render();
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| 296 | TWEEN.update();
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| 297 |
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| 298 | }
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| 299 |
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| 300 | function _render() {
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| 301 | lat = Math.max( - 85, Math.min( 85, lat ) );
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| 302 | phi = ( 90 - lat ) * Math.PI / 180;
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| 303 | theta = lon * Math.PI / 180;
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| 304 |
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| 305 | camera.target.x = sphereRadius * Math.sin( phi ) * Math.cos( theta );
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| 306 | camera.target.y = sphereRadius * Math.cos( phi );
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| 307 | camera.target.z = sphereRadius * Math.sin( phi ) * Math.sin( theta );
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| 308 |
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| 309 | camera.lookAt( camera.target );
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| 310 |
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| 311 | /*
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| 312 | // distortion
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| 313 | camera.position.x = - camera.target.x;
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| 314 | camera.position.y = - camera.target.y;
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| 315 | camera.position.z = - camera.target.z;
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| 316 | */
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| 317 |
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| 318 | var camUnitVector = camera.target.clone().normalize();
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| 319 | var i, angle, sameSide, p2D, marker;
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| 320 |
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| 321 | // Snippet of code from Thanh Tran from in2ideas
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| 322 | // [email protected]
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| 323 | for (i = 0; i < nearbyPanoList.length; ++i) {
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| 324 | marker = nearbyPanoList[i];
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| 325 | p2D = projector.projectVector(marker.position.clone(), camera);
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| 326 |
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| 327 | p2D.x = (p2D.x + 1)/2 * width;
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| 328 | p2D.y = - (p2D.y - 1)/2 * height;
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| 329 |
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| 330 | angle = Math.acos(camUnitVector.dot(marker.unitVector)) * 180 / 3.14;
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| 331 | sameSide = (angle < 90);
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| 332 |
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| 333 | if(!sameSide || p2D.x < 0 || p2D.x > width ||
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| 334 | p2D.y < 0 || p2D.y > height) {
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| 335 | marker.visible(false);
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| 336 | } else {
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| 337 | marker.visible(true);
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| 338 | marker.setPosition(p2D.x, p2D.y);
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| 339 | }
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| 340 | }
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| 341 | renderer.render( scene, camera );
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| 342 | } |
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