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<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>GeoUtils示例</title> <script type="text/javascript" src="http://api.map.baidu.com/api?v=1.2"></script> <script type="text/javascript" src="http://api.map.baidu.com/library/GeoUtils/1.2/src/GeoUtils_min.js"></script> <style type="text/css"> table{ font-size:14px; } </style> </head> <body> <div style="float:left;width:600px;height:500px;border:1px solid gray" id="container"></div> <div style="float:left;width:300px;height:500px;border:1px solid gray" id="control"> <table style="width:100%;" > <tr> <td colspan="2">点与矩形的关系: </td> </tr> <tr> <td><input type="button" value="点在矩形内" onclick="ptInRect()" /></td> <td><input type="button" value="点在矩形外" onclick="ptOutRect()" /></td> </tr> <tr> <td><br/></td> </tr> <tr> <td colspan="2">点与圆形的关系: </td> </tr> <tr> <td><input type="button" value="点在圆形内" onclick="ptInCircle()" /></td> <td><input type="button" value="点在圆形外" onclick="ptOutCircle()" /></td> </tr> <tr> <td><br/></td> </tr> <tr> <td colspan="2">计算折线长度: </td> </tr> <tr> <td><input type="button" value="参数为折线" onclick="computeLenByPolyine()" /></td> <td><input type="button" value="参数为点数组" onclick="computeLenByArray()" /></td> </tr> <tr> <td><br/></td> </tr> <tr> <td colspan="2">计算多边形面积: </td> </tr> <tr> <td><input type="button" value="参数为多边形" onclick="computeAreaByPolygon()" /></td> <td><input type="button" value="参数为点数组" onclick="computeAreaByArray()" /></td> </tr> <tr> <td><br/></td> </tr> <tr> <td colspan="2">判断点是否在折线上: </td> </tr> <tr> <td><input type="button" value="点在折线上" onclick="ptOnPolyline()" /></td> <td><input type="button" value="点在折线外" onclick="ptOutPolyline()" /></td> </tr> <tr> <td><br/></td> </tr> <tr> <td colspan="2">判断点是否在多边形内: </td> </tr> <tr> <td><input type="button" value="点在多边形内" onclick="ptInPolygon()" /></td> <td><input type="button" value="点在多边形外" onclick="ptOutPolygon()" /></td> </tr> <table> </div> </body> </html> <script type="text/javascript"> var map = new BMap.Map("container"); var pt = new BMap.Point(116.404, 39.915); map.centerAndZoom(pt, 16); map.enableScrollWheelZoom();//开启滚动缩放 map.enableContinuousZoom();//开启缩放平滑 //点在矩形内 function ptInRect(){ var pt = new BMap.Point(116.404, 39.915);//测试点 var pt1 = new BMap.Point(116.400, 39.910);//西南脚点 var pt2 = new BMap.Point(116.410, 39.920);//东北脚点 var bds = new BMap.Bounds(pt1, pt2); //测试Bounds对象 var result = BMapLib.GeoUtils.isPointInRect(pt, bds); if(result == true){ alert("点在矩形内"); } else { alert("点在矩形外") } //演示:将点与矩形添加到地图上 map.clearOverlays(); var mkr = new BMap.Marker(pt); var pts = []; //bds的四个脚点坐标 var leftTop = new BMap.Point(pt1.lng, pt2.lat); var rightTop = new BMap.Point(pt2.lng, pt2.lat); var leftBottom = new BMap.Point(pt1.lng, pt1.lat); var rightBottom = new BMap.Point(pt2.lng, pt1.lat); pts.push(leftTop); pts.push(rightTop); pts.push(rightBottom); pts.push(leftBottom); var rect = new BMap.Polygon(pts); map.addOverlay(mkr);//添加测试点 map.addOverlay(rect);//添加测试矩形 } //点在矩形外 function ptOutRect(){ var pt = new BMap.Point(116.398, 39.915);//测试点 var pt1 = new BMap.Point(116.400, 39.910);//西南脚点 var pt2 = new BMap.Point(116.410, 39.920);//东北脚点 var bds = new BMap.Bounds(pt1, pt2); //测试Bounds对象 var result = BMapLib.GeoUtils.isPointInRect(pt, bds); if(result == true){ alert("点在矩形内"); } else { alert("点在矩形外") } //演示:将点与矩形添加到地图上 map.clearOverlays(); var mkr = new BMap.Marker(pt); var pts = []; //bds的四个脚点坐标 var leftTop = new BMap.Point(pt1.lng, pt2.lat); var rightTop = new BMap.Point(pt2.lng, pt2.lat); var leftBottom = new BMap.Point(pt1.lng, pt1.lat); var rightBottom = new BMap.Point(pt2.lng, pt1.lat); pts.push(leftTop); pts.push(rightTop); pts.push(rightBottom); pts.push(leftBottom); var rect = new BMap.Polygon(pts); map.addOverlay(mkr);//添加测试点 map.addOverlay(rect);//添加测试矩形 } //点在圆内 function ptInCircle(){ var pt = new BMap.Point(116.404, 39.915);//测试点 var c = new BMap.Point(116.404, 39.915); //圆心 var circle = new BMap.Circle(c, 500);//测试圆 var result = BMapLib.GeoUtils.isPointInCircle(pt, circle); if(result == true){ alert("点在圆形内"); } else { alert("点在圆形外") } //演示:将点与圆形添加到地图上 map.clearOverlays(); var mkr = new BMap.Marker(pt); map.addOverlay(mkr); map.addOverlay(circle); } //点在圆外 function ptOutCircle(){ var pt = new BMap.Point(116.396, 39.915);//测试点 var c = new BMap.Point(116.404, 39.915); //圆心 var circle = new BMap.Circle(c, 500);//测试圆 var result = BMapLib.GeoUtils.isPointInCircle(pt, circle); if(result == true){ alert("点在圆形内"); } else { alert("点在圆形外") } //演示:将点与圆形添加到地图上 map.clearOverlays(); var mkr = new BMap.Marker(pt); map.addOverlay(mkr); map.addOverlay(circle); } //计算长度,参数为折线 function computeLenByPolyine(){ var pts = []; var pt1 = new BMap.Point(116.400,39.910); var pt2 = new BMap.Point(116.402,39.912); var pt3 = new BMap.Point(116.403,39.914); var pt4 = new BMap.Point(116.404,39.917); var pt5 = new BMap.Point(116.406,39.918); pts.push(pt1); pts.push(pt2); pts.push(pt3); pts.push(pt4); pts.push(pt5); var ply = new BMap.Polyline(pts); var dis = BMapLib.GeoUtils.getPolylineDistance(ply); alert("共" + dis.toFixed(2) + "米"); //演示:将线添加到地图上 map.clearOverlays(); map.addOverlay(ply); } //计算长度,参数为点数组 function computeLenByArray(){ var pts = []; var pt1 = new BMap.Point(116.400,39.910); var pt2 = new BMap.Point(116.402,39.912); var pt3 = new BMap.Point(116.403,39.914); var pt4 = new BMap.Point(116.404,39.917); var pt5 = new BMap.Point(116.406,39.918); pts.push(pt1); pts.push(pt2); pts.push(pt3); pts.push(pt4); pts.push(pt5); var dis = BMapLib.GeoUtils.getPolylineDistance(pts); alert("共" + dis.toFixed(2) + "米"); //演示:将线添加到地图上 var ply = new BMap.Polyline(pts, {strokeColor: "red", strokeStyle:"dashed"}); map.clearOverlays(); map.addOverlay(ply); } //计算面积,参数为多边形 function computeAreaByPolygon(){ var pts = []; var pt1 = new BMap.Point(116.395, 39.910); var pt2 = new BMap.Point(116.394, 39.918); var pt3 = new BMap.Point(116.396, 39.919); var pt4 = new BMap.Point(116.404, 39.920); var pt5 = new BMap.Point(116.406, 39.913); pts.push(pt1); pts.push(pt2); pts.push(pt3); pts.push(pt4); pts.push(pt5); var ply = new BMap.Polygon(pts); var area = BMapLib.GeoUtils.getPolygonArea(ply); alert("共" + area.toFixed(2) + "平方米"); //演示:将面添加到地图上 map.clearOverlays(); map.addOverlay(ply); } //计算面积,参数为数组 function computeAreaByArray(){ var pts = []; var pt1 = new BMap.Point(116.395, 39.910); var pt2 = new BMap.Point(116.394, 39.918); var pt3 = new BMap.Point(116.396, 39.919); var pt4 = new BMap.Point(116.404, 39.920); var pt5 = new BMap.Point(116.406, 39.913); pts.push(pt1); pts.push(pt2); pts.push(pt3); pts.push(pt4); pts.push(pt5); var area = BMapLib.GeoUtils.getPolygonArea(pts); alert("共" + area.toFixed(2) + "平方米"); //演示:将面添加到地图上 var ply = new BMap.Polygon(pts, {strokeColor: "red", strokeStyle:"dashed", fillColor:"gray"}); map.clearOverlays(); map.addOverlay(ply); } //点在折线上 function ptOnPolyline(){ var pts = []; var pt1 = new BMap.Point(116.395, 39.910); var pt2 = new BMap.Point(116.405, 39.920); var pt3 = new BMap.Point(116.410, 39.920); pts.push(pt1); pts.push(pt2); pts.push(pt3); var ply = new BMap.Polyline(pts); var pt = new BMap.Point(116.400, 39.915); var result = BMapLib.GeoUtils.isPointOnPolyline(pt, ply); if(result == true){ alert("点在折线上"); } else { alert("点在折线外") } map.clearOverlays(); var mkr = new BMap.Marker(pt); map.addOverlay(mkr); map.addOverlay(ply); } //点在折线外 function ptOutPolyline(){ var pts = []; var pt1 = new BMap.Point(116.395, 39.910); var pt2 = new BMap.Point(116.405, 39.920); var pt3 = new BMap.Point(116.410, 39.920); pts.push(pt1); pts.push(pt2); pts.push(pt3); var ply = new BMap.Polyline(pts); var pt = new BMap.Point(116.401, 39.915); var result = BMapLib.GeoUtils.isPointOnPolyline(pt, ply); if(result == true){ alert("点在折线上"); } else { alert("点在折线外") } map.clearOverlays(); var mkr = new BMap.Marker(pt); map.addOverlay(mkr); map.addOverlay(ply); } //点在多边形内 function ptInPolygon(){ var pts = []; var pt1 = new BMap.Point(116.395, 39.910); var pt2 = new BMap.Point(116.394, 39.914); var pt3 = new BMap.Point(116.403, 39.920); var pt4 = new BMap.Point(116.402, 39.914); var pt5 = new BMap.Point(116.410, 39.913); pts.push(pt1); pts.push(pt2); pts.push(pt3); pts.push(pt4); pts.push(pt5); var ply = new BMap.Polygon(pts); var pt =new BMap.Point(116.400, 39.914); var result = BMapLib.GeoUtils.isPointInPolygon(pt, ply); if(result == true){ alert("点在多边形内"); } else { alert("点在多边形外") } //演示:将面添加到地图上 map.clearOverlays(); var mkr = new BMap.Marker(pt); map.addOverlay(mkr); map.addOverlay(ply); } //点在多边形外 function ptOutPolygon(){ var pts = []; var pt1 = new BMap.Point(116.395, 39.910); var pt2 = new BMap.Point(116.394, 39.914); var pt3 = new BMap.Point(116.396, 39.919); var pt4 = new BMap.Point(116.406, 39.920); var pt5 = new BMap.Point(116.410, 39.913); pts.push(pt1); pts.push(pt2); pts.push(pt3); pts.push(pt4); pts.push(pt5); var ply = new BMap.Polygon(pts); var pt =new BMap.Point(116.410, 39.915); var result = BMapLib.GeoUtils.isPointInPolygon(pt, ply); if(result == true){ alert("点在多边形内"); } else { alert("点在多边形外") } //演示:将面添加到地图上 map.clearOverlays(); var mkr = new BMap.Marker(pt); map.addOverlay(mkr); map.addOverlay(ply); } </script>
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原文地址:http://www.cnblogs.com/yu0312chao/p/4891875.html