两点重合点击显示时间

ZhuDongming

2019-07-26 c719bd3396f381e6ba60d613eab17f3a17c272b0

 src/main/webapp/view/uavTrajectory.jsp

@@ -63,6 +63,9 @@
    //var map = new BMap.Map("mapCanvas", defaultParam);
    var map = new BMap.Map("mapCanvas", {enableMapClick: false});
    var trackPoints = []; //用来存放从后台获取到的所有历史轨迹点的数据
    var winfowText;
    var a1=-2;
    var coincidentpoints=[];
    if (sensorInfo.length > 0) {
        $.each(sensorInfo, function (item, value) {
            trackPoints.push(new BMap.Point(value.e76, value.e77));
@@ -70,6 +73,24 @@
        for (var i = 0; i < trackPoints.length; i++) {
            var startPoint = trackPoints[i];
            var endPoint = trackPoints[i + 1];
            winfowText = "时间：" + sensorInfo[i].uavDate
                + "</br> 经度：" + sensorInfo[i].e76
                + "</br> 纬度：" + sensorInfo[i].e77
                + "</br> 高度：" + sensorInfo[i].e78
                + "</br> 速度x：" + sensorInfo[i].e79
                + "</br> 速度y：" + sensorInfo[i].e80
                + "</br> 速度z：" + sensorInfo[i].e81;
            for (var j = i + 1; j < trackPoints.length; j++) {
                if(startPoint.equals(trackPoints[j])&&i!=j){
                    a1=i;
                    coincidentpoints.push(j);
                }
                for(var x=0;x<coincidentpoints.length;x++){
                    if (i==a1||i==coincidentpoints[x]) {
                        winfowText = "时间：" + sensorInfo[a1].uavDate + "</br> 时间：" + sensorInfo[coincidentpoints[x]].uavDate;
                    }
                }
            }
            var marker;
            var startIcon = new BMap.Icon("/img/start.png", new BMap.Size(48, 48));
            var endIcon = new BMap.Icon("/img/end.png", new BMap.Size(48, 48));
@@ -79,16 +100,10 @@
            }
            if (i == trackPoints.length - 1) {
                marker = new BMap.Marker(startPoint, {icon: endIcon, offset: new BMap.Size(0, -20)});
            } else if (i != 0 && i!=trackPoints.length - 1) {
            }
            if (i != 0 && i != trackPoints.length - 1) {
                marker = new BMap.Marker(startPoint);
            }
            winfowText = "时间：" + sensorInfo[i].uavDate
                + "</br> 经度：" + sensorInfo[i].e76
                + "</br> 纬度：" + sensorInfo[i].e77
                + "</br> 高度：" + sensorInfo[i].e78
                + "</br> 速度x：" + sensorInfo[i].e79
                + "</br> 速度y：" + sensorInfo[i].e80
                + "</br> 速度z：" + sensorInfo[i].e81;
            (function (x) {
                var infoWindow = new BMap.InfoWindow(winfowText, {enableMessage: false, width: 30, height: 130});
                marker.addEventListener("click", function () {
@@ -96,85 +111,86 @@
                });
            })(i);
            map.addOverlay(marker);

            var polyline = new BMap.Polyline([
                    startPoint,
                    endPoint
                ],
                {strokeColor: "green", strokeWeight: 2, strokeOpacity: 1}
            );
            if(i < trackPoints.length-1){
            if (i < trackPoints.length - 1) {
                map.addOverlay(polyline);// 画两点间线
                addArrow(polyline, 5, Math.PI / 7);
            }
        }
    }
        var longitude;
        var latitude;
        var point;
        if (sensorInfo.length == 0) {
            longitude = 120.987287;
            latitude = 31.391562;
            point = new BMap.Point(longitude, latitude);
            map.centerAndZoom(point, 17);
            alert("查不到相关数据");
        }
        map.setCurrentCity("昆山");
        map.setMapStyle(mapStyle);
        map.enableScrollWheelZoom(true); // 开启鼠标滚轮缩放
        var navigation = new BMap.NavigationControl({
            anchor: BMAP_ANCHOR_BOTTOM_RIGHT,
            type: BMAP_NAVIGATION_CONTROL_LARGE
        });
        map.addControl(navigation);
        map.addControl(new BMap.ScaleControl());
    var longitude;
    var latitude;
    var point;
    if (sensorInfo.length == 0) {
        longitude = 120.987287;
        latitude = 31.391562;
        point = new BMap.Point(longitude, latitude);
        map.centerAndZoom(point, 17);
        alert("查不到相关数据");
    }
    map.setCurrentCity("昆山");
    map.setMapStyle(mapStyle);
    map.enableScrollWheelZoom(true); // 开启鼠标滚轮缩放
    var navigation = new BMap.NavigationControl({
        anchor: BMAP_ANCHOR_BOTTOM_RIGHT,
        type: BMAP_NAVIGATION_CONTROL_LARGE
    });
    map.addControl(navigation);
    map.addControl(new BMap.ScaleControl());

        function addArrow(polyline, length, angleValue) {
            var linePoint = polyline.getPath();// 线的坐标串
            var arrowCount = linePoint.length;
            for (var i = 1; i < arrowCount; i++) { // 在拐点处绘制箭头
                var pixelStart = map.pointToPixel(linePoint[i - 1]);
                var pixelEnd = map.pointToPixel(linePoint[i]);
                var angle = angleValue;// 箭头和主线的夹角
                var r = length; // r/Math.sin(angle)代表箭头长度
                var delta = 0; // 主线斜率，垂直时无斜率
                var param = 0; // 代码简洁考虑
                var pixelTemX, pixelTemY, poMiddleX, poMiddleY;// 临时点坐标
                var pixelX, pixelY, pixelX1, pixelY1;// 箭头两个点
                poMiddleX = (pixelEnd.x + pixelStart.x) / 2;
                poMiddleY = (pixelEnd.y + pixelStart.y) / 2;
                if (poMiddleX - pixelStart.x == 0) { // 斜率不存在时
                    pixelTemX = poMiddleX;
                    if (poMiddleY > pixelStart.y) {
                        pixelTemY = poMiddleY - r;
                    } else {
                        pixelTemY = poMiddleY + r;
                    }
                    // 已知直角三角形两个点坐标及其中一个角，求另外一个点坐标算法
                    pixelX = pixelTemX - r * Math.tan(angle);
                    pixelX1 = pixelTemX + r * Math.tan(angle);
                    pixelY = pixelY1 = pixelTemY;
                } else { // 斜率存在时
                    delta = (poMiddleY - pixelStart.y) / (poMiddleX - pixelStart.x);
                    param = Math.sqrt(delta * delta + 1);
                    if ((poMiddleX - pixelStart.x) < 0) { // 第二、三象限
                        pixelTemX = poMiddleX + r / param;
                        pixelTemY = poMiddleY + delta * r / param;
                    } else {  // 第一、四象限
                        pixelTemX = poMiddleX - r / param;
                        pixelTemY = poMiddleY - delta * r / param;
                    }
                    // 已知直角三角形两个点坐标及其中一个角，求另外一个点坐标算法
                    pixelX = pixelTemX + Math.tan(angle) * r * delta / param;
                    pixelY = pixelTemY - Math.tan(angle) * r / param;
                    pixelX1 = pixelTemX - Math.tan(angle) * r * delta / param;
                    pixelY1 = pixelTemY + Math.tan(angle) * r / param;
    function addArrow(polyline, length, angleValue) {
        var linePoint = polyline.getPath();// 线的坐标串
        var arrowCount = linePoint.length;
        for (var i = 1; i < arrowCount; i++) { // 在拐点处绘制箭头
            var pixelStart = map.pointToPixel(linePoint[i - 1]);
            var pixelEnd = map.pointToPixel(linePoint[i]);
            var angle = angleValue;// 箭头和主线的夹角
            var r = length; // r/Math.sin(angle)代表箭头长度
            var delta = 0; // 主线斜率，垂直时无斜率
            var param = 0; // 代码简洁考虑
            var pixelTemX, pixelTemY, poMiddleX, poMiddleY;// 临时点坐标
            var pixelX, pixelY, pixelX1, pixelY1;// 箭头两个点
            poMiddleX = (pixelEnd.x + pixelStart.x) / 2;
            poMiddleY = (pixelEnd.y + pixelStart.y) / 2;
            if (poMiddleX - pixelStart.x == 0) { // 斜率不存在时
                pixelTemX = poMiddleX;
                if (poMiddleY > pixelStart.y) {
                    pixelTemY = poMiddleY - r;
                } else {
                    pixelTemY = poMiddleY + r;
                }
                var pointArrow = map.pixelToPoint(new BMap.Pixel(pixelX, pixelY));
                var pointArrow1 = map.pixelToPoint(new BMap.Pixel(pixelX1, pixelY1));
                var pointMiddle = map.pixelToPoint(new BMap.Pixel(poMiddleX, poMiddleY));
                var Arrow = new BMap.Polyline([pointArrow, pointMiddle, pointArrow1],
                    {strokeColor: "green", strokeWeight: 2, strokeOpacity: 1});
                map.addOverlay(Arrow);
                // 已知直角三角形两个点坐标及其中一个角，求另外一个点坐标算法
                pixelX = pixelTemX - r * Math.tan(angle);
                pixelX1 = pixelTemX + r * Math.tan(angle);
                pixelY = pixelY1 = pixelTemY;
            } else { // 斜率存在时
                delta = (poMiddleY - pixelStart.y) / (poMiddleX - pixelStart.x);
                param = Math.sqrt(delta * delta + 1);
                if ((poMiddleX - pixelStart.x) < 0) { // 第二、三象限
                    pixelTemX = poMiddleX + r / param;
                    pixelTemY = poMiddleY + delta * r / param;
                } else {  // 第一、四象限
                    pixelTemX = poMiddleX - r / param;
                    pixelTemY = poMiddleY - delta * r / param;
                }
                // 已知直角三角形两个点坐标及其中一个角，求另外一个点坐标算法
                pixelX = pixelTemX + Math.tan(angle) * r * delta / param;
                pixelY = pixelTemY - Math.tan(angle) * r / param;
                pixelX1 = pixelTemX - Math.tan(angle) * r * delta / param;
                pixelY1 = pixelTemY + Math.tan(angle) * r / param;
            }
        };
            var pointArrow = map.pixelToPoint(new BMap.Pixel(pixelX, pixelY));
            var pointArrow1 = map.pixelToPoint(new BMap.Pixel(pixelX1, pixelY1));
            var pointMiddle = map.pixelToPoint(new BMap.Pixel(poMiddleX, poMiddleY));
            var Arrow = new BMap.Polyline([pointArrow, pointMiddle, pointArrow1],
                {strokeColor: "green", strokeWeight: 2, strokeOpacity: 1});
            map.addOverlay(Arrow);
        }
    };
</script>