/**
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* 分层分户
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*/
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(function(window) {
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'use strict';
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function define_CesiumFloor() {
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//Main object
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var CesiumFloor = {};
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//获取立方体中心点、方位角、边线长度
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function fixtoboxvertex(floorPoiStrArr){
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var oriLonArr = [], oriLatArr = [];
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for (var i = 0; i < 12; i=i+3) {
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oriLonArr.push(Number(floorPoiStrArr[i]));
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oriLatArr.push(Number(floorPoiStrArr[i+1]));
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}
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oriLonArr.push(Number(floorPoiStrArr[0]));
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oriLatArr.push(Number(floorPoiStrArr[1]));
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var sumLon = 0, sumLat = 0;
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var heading = [], distance = [];
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for (var i = 0; i < oriLonArr.length-1; i++) {
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sumLon += oriLonArr[i];
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sumLat += oriLatArr[i];
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heading.push(azimuthtwopoi(oriLonArr[i],oriLatArr[i],oriLonArr[i+1],oriLatArr[i+1]));
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distance.push(getFlatternDistance(oriLonArr[i],oriLatArr[i],oriLonArr[i+1],oriLatArr[i+1]));
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}
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var centerLon = sumLon/4;
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var centerLat = sumLat/4;
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return {centerLon, centerLat, heading, distance};
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//根据两点坐标计算方位角
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function azimuthtwopoi(x1,y1,x2,y2){
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var result;
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var a = Math.abs(Math.atan((y2-y1)/(x2-x1)))*180/Math.PI;
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if((x2-x1)<0){
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if((y2-y1)>0){
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result = a + 270;
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}else{
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result = 90 - a + 180;
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}
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}else{
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if((y2-y1)>0){
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result = 90 - a;
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}else{
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result = a + 90;
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}
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}
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return result;
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}
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function getFlatternDistance(lng1, lat1, lng2, lat2) {
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var EARTH_RADIUS = 6378137.0; //单位M
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var PI = Math.PI;
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function getRad(d) {
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return d * PI / 180.0;
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}
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var f = getRad((lat1 + lat2) / 2);
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var g = getRad((lat1 - lat2) / 2);
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var l = getRad((lng1 - lng2) / 2);
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var sg = Math.sin(g);
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var sl = Math.sin(l);
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var sf = Math.sin(f);
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var s,c,w,r,d,h1,h2;
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var a = EARTH_RADIUS;
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var fl = 1 / 298.257;
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sg = sg * sg;
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sl = sl * sl;
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sf = sf * sf;
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s = sg * (1 - sl) + (1 - sf) * sl;
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c = (1 - sg) * (1 - sl) + sf * sl;
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w = Math.atan(Math.sqrt(s / c));
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r = Math.sqrt(s * c) / w;
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d = 2 * w * a;
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h1 = (3 * r - 1) / 2 / c;
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h2 = (3 * r + 1) / 2 / s;
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return d * (1 + fl * (h1 * sf * (1 - sg) - h2 * (1 - sf) * sg));
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}
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}
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var buildingHighlight = [];
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var floorHeightDrawArr = [];
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CesiumFloor.addFloor = function(options){
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var viewer = options.viewer;
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var poiStrArr = options.floorPoi.split(",");
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var boxresult = fixtoboxvertex(poiStrArr);
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var headingVal = options.floorHeading;
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var heading, width, depth;
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switch (headingVal) {
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case 'north':
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heading = boxresult.heading[0];
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width = boxresult.distance[1];
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depth = boxresult.distance[0];
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break;
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case 'east':
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heading = boxresult.heading[1];
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width = boxresult.distance[2];
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depth = boxresult.distance[1];
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break;
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case 'south':
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heading = boxresult.heading[2];
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width = boxresult.distance[3];
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depth = boxresult.distance[2];
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break;
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case 'west':
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heading = boxresult.heading[3];
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width = boxresult.distance[0];
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depth = boxresult.distance[3];
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break;
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default:
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break;
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}
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var heightArr = options.floorHeight.split(",");
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for (var i = 0; i < heightArr.length - 2; i++) {
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var floorheight = Number(heightArr[i + 1]) - Number(heightArr[i]);
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var center = new Cesium.Cartesian3.fromDegrees(boxresult.centerLon, boxresult.centerLat, Number(heightArr[i]));
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var modelMatrix = Cesium.Transforms.eastNorthUpToFixedFrame(center);
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var headingresult = Cesium.Math.toRadians(heading + Number(options.miniheading));
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var hprRotation = Cesium.Matrix3.fromHeadingPitchRoll(new Cesium.HeadingPitchRoll(headingresult, 0.0, 0.0));
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var hpr = Cesium.Matrix4.fromRotationTranslation(hprRotation, new Cesium.Cartesian3(0.0, 0.0, floorheight / 2));
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Cesium.Matrix4.multiply(modelMatrix, hpr, modelMatrix);
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var color;
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if(options.floorName&&options.floorName!=''){
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var floorNum = options.floorName.substring(options.floorName.lastIndexOf("单元")+2,options.floorName.length-2);
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color = Number(floorNum) % 2 == 0 ? Cesium.Color.RED.withAlpha(0.5) : Cesium.Color.GREEN.withAlpha(0.5);
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}else{
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color = i % 2 == 0 ? Cesium.Color.RED.withAlpha(0.5) : Cesium.Color.GREEN.withAlpha(0.5);
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}
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buildingHighlight.push(viewer.scene.primitives.add(new Cesium.ClassificationPrimitive({
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geometryInstances : new Cesium.GeometryInstance({
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geometry : Cesium.BoxGeometry.fromDimensions({
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vertexFormat : Cesium.PerInstanceColorAppearance.VERTEX_FORMAT,
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dimensions : new Cesium.Cartesian3(width, depth, floorheight)
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}),
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modelMatrix : modelMatrix,
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attributes : {
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color : Cesium.ColorGeometryInstanceAttribute.fromColor(color),
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show : new Cesium.ShowGeometryInstanceAttribute(true)
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},
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id : 'fl'+options.floorAddId
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}),
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classificationType : Cesium.ClassificationType.CESIUM_3D_TILE
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})));
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}
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}
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CesiumFloor.removeFloor = function(viewer){
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for (var i = 0; i < buildingHighlight.length; i++) {
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viewer.scene.primitives.remove(buildingHighlight[i]);//去除分层分户
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}
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buildingHighlight = [];
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for (var j = 0; j < floorHeightDrawArr.length; j++) {
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viewer.entities.remove(floorHeightDrawArr[j]);
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}
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floorHeightDrawArr = [];
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}
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CesiumFloor.drawFloorHeight = function(options){
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var handler = handler && handler.destroy();
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var viewer = options.viewer;
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handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
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handler.setInputAction(function(movement){
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//获取鼠标点击处的坐标
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var cartesian = viewer.scene.pickPosition(movement.position);
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if (Cesium.defined(cartesian)) {
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var cartographic = Cesium.Cartographic.fromCartesian(cartesian);
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var testheight = cartographic.height;
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if(Number(testheight)<0){
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var ray = viewer.camera.getPickRay(movement.position);
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cartesian = viewer.scene.globe.pick(ray,viewer.scene);
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}
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cartographic = Cesium.Cartographic.fromCartesian(cartesian);
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var height = cartographic.height;//模型高度
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$('#'+options.printId).val($('#'+options.printId).val()+height+',');
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floorHeightDrawArr.push(viewer.entities.add({
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position : cartesian,
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ellipsoid : {
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radii : new Cesium.Cartesian3(0.2, 0.2, 0.2),
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material : Cesium.Color.RED.withAlpha(0.8)
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}
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}));
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}
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},Cesium.ScreenSpaceEventType.LEFT_CLICK);
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handler.setInputAction(function(movement) {
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handler = handler && handler.destroy();
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}, Cesium.ScreenSpaceEventType.RIGHT_CLICK);
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}
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return CesiumFloor;
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}
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if (typeof (CesiumFloor) === 'undefined') {
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window.CesiumFloor = define_CesiumFloor();
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} else {
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console.log("CesiumFloor already defined.");
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}
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})(window);
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