Leaflet中使用leaflet.polylineDecorator插件绘制箭头线及虚线矩形

清疚 2023-09-30 12:54 0阅读 0赞

## 场景 ##

Leaflet快速入门与加载OSM显示地图：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/122290880 ][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_122290880]

在上面的基础上怎样绘制箭头、虚线矩形。

![watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA6Zy46YGT5rWB5rCT5rCU6LSo_size_20_color_FFFFFF_t_70_g_se_x_16][]

Leaflet.PolylineDecorator插件地址：

[https://github.com/bbecquet/Leaflet.PolylineDecorator][https_github.com_bbecquet_Leaflet.PolylineDecorator]

注：

博客：  
[https://blog.csdn.net/badao\_liumang\_qizhi][https_blog.csdn.net_badao_liumang_qizhi]  
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## 实现 ##

1、下载插件并引入依赖

2、绘制箭头

//绘制图层
            var drawnItems = new L.FeatureGroup();
                        //添加绘制图层
                        map.addLayer(drawnItems);
    
            //1.绘制线
            var arrow = L.polyline([[36.09, 120.35], [36.10, 120.38]], {
                //颜色
                color: 'red'
            }).addTo(drawnItems);
            //添加箭头
            var arrowHead = L.polylineDecorator(arrow, {
                //添加模式
                patterns: [{
                    //模式符号的偏移位置
                    offset: '100%',
                    //模式符号的重复间隔
                    repeat: 0,
                    //符号实例
                    symbol: L.Symbol.arrowHead({
                        //符号大小
                        pixelSize: 15,
                        //符号样式
                        pathOptions: {
                            //是否显示边线
                            stroke: true
                        }
                    })
                }]
            }).addTo(drawnItems);

3、绘制虚线矩形

//2.绘制虚线矩形
            var pathPattern = L.polylineDecorator([[36.11, 120.30], [36.11, 120.33], [36.14, 120.33], [36.14, 120.30], [36.11, 120.30]], {
                //添加模式
                patterns: [{
                    //模式符号的偏移位置
                    offset: 12,
                    //模式符号的重复间隔
                    repeat: 25,
                    //符号实例
                    symbol: L.Symbol.dash({
                        //符号大小
                        pixelSize: 10,
                        //符号样式
                        pathOptions: {
                            //颜色
                            color: '#f00',
                            //线宽
                            weight: 2
                        }
                    })
                },
                    {
                        //模式符号的偏移位置
                        offset: 0,
                        //模式符号的重复间隔
                        repeat: 25,
                        //符号实例
                        symbol: L.Symbol.dash({
                            //符号大小
                            pixelSize: 0
                        })
                    }
                ]
            }).addTo(drawnItems);

4、绘制飞行航线图

//3.绘制图案
            var pathPattern = L.polylineDecorator([[36.15, 120.38], [36.14, 120.39], [36.13, 120.42], [36.11, 120.44], [36.09, 120.49]], {
                //添加模式
                patterns: [
                    {
                        //模式符号的偏移位置
                        offset: 0,
                        //模式符号的重复间隔
                        repeat: 10,
                        //符号实例
                        symbol: L.Symbol.dash({
                            //符号大小
                            pixelSize: 5,
                            //符号样式
                            pathOptions: {
                                //颜色
                                color: 'blue',
                                //线宽
                                weight: 1,
                                //透明度
                                opacity: 1
                            }
                        })
                    },
                    {
                        //模式符号的偏移位置
                        offset: '0%',
                        //模式符号的重复间隔
                        repeat: '20%',
                        //符号实例
                        symbol: L.Symbol.marker({
                            //是否允许旋转
                            rotate: true,
                            //标记显示样式
                            markerOptions: {
                                //图标
                                icon: L.icon({
                                    //图标地址
                                    iconUrl: './images/icon_plane.png',
                                    //图标位置
                                    iconAnchor: [16, 16]
                                })
                            }
                        })
                    }
                ]
            }).addTo(drawnItems);

5、完整示例代码

<!doctype html>
    <html lang="en">
    
    <head>
        <meta charset="UTF-8">
        <title>leaflet绘制箭头和虚线矩形</title>
        <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css" />
        <style>
            html,
            body,
            #map {
                padding: 0;
                margin: 0;
                width: 100%;
                height: 100%;
                overflow: hidden;
            }
        </style>
    </head>
    
    <body>
        <div id="map"></div>
        <script type="text/javascript" src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
        <script type="text/javascript" src="./js/leaflet.polylineDecorator.js"></script>
        <script type="text/javascript">
            var map = L.map('map').setView([36.09, 120.35], 13);
            L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
                attribution: ''
            }).addTo(map);
    
            //绘制图层
            var drawnItems = new L.FeatureGroup();
                        //添加绘制图层
                        map.addLayer(drawnItems);
    
            //1.绘制线
            var arrow = L.polyline([[36.09, 120.35], [36.10, 120.38]], {
                //颜色
                color: 'red'
            }).addTo(drawnItems);
            //添加箭头
            var arrowHead = L.polylineDecorator(arrow, {
                //添加模式
                patterns: [{
                    //模式符号的偏移位置
                    offset: '100%',
                    //模式符号的重复间隔
                    repeat: 0,
                    //符号实例
                    symbol: L.Symbol.arrowHead({
                        //符号大小
                        pixelSize: 15,
                        //符号样式
                        pathOptions: {
                            //是否显示边线
                            stroke: true
                        }
                    })
                }]
            }).addTo(drawnItems);
    
            //2.绘制虚线矩形
            var pathPattern = L.polylineDecorator([[36.11, 120.30], [36.11, 120.33], [36.14, 120.33], [36.14, 120.30], [36.11, 120.30]], {
                //添加模式
                patterns: [{
                    //模式符号的偏移位置
                    offset: 12,
                    //模式符号的重复间隔
                    repeat: 25,
                    //符号实例
                    symbol: L.Symbol.dash({
                        //符号大小
                        pixelSize: 10,
                        //符号样式
                        pathOptions: {
                            //颜色
                            color: '#f00',
                            //线宽
                            weight: 2
                        }
                    })
                },
                    {
                        //模式符号的偏移位置
                        offset: 0,
                        //模式符号的重复间隔
                        repeat: 25,
                        //符号实例
                        symbol: L.Symbol.dash({
                            //符号大小
                            pixelSize: 0
                        })
                    }
                ]
            }).addTo(drawnItems);
    
            //3.绘制图案
            var pathPattern = L.polylineDecorator([[36.15, 120.38], [36.14, 120.39], [36.13, 120.42], [36.11, 120.44], [36.09, 120.49]], {
                //添加模式
                patterns: [
                    {
                        //模式符号的偏移位置
                        offset: 0,
                        //模式符号的重复间隔
                        repeat: 10,
                        //符号实例
                        symbol: L.Symbol.dash({
                            //符号大小
                            pixelSize: 5,
                            //符号样式
                            pathOptions: {
                                //颜色
                                color: 'blue',
                                //线宽
                                weight: 1,
                                //透明度
                                opacity: 1
                            }
                        })
                    },
                    {
                        //模式符号的偏移位置
                        offset: '0%',
                        //模式符号的重复间隔
                        repeat: '20%',
                        //符号实例
                        symbol: L.Symbol.marker({
                            //是否允许旋转
                            rotate: true,
                            //标记显示样式
                            markerOptions: {
                                //图标
                                icon: L.icon({
                                    //图标地址
                                    iconUrl: './images/icon_plane.png',
                                    //图标位置
                                    iconAnchor: [16, 16]
                                })
                            }
                        })
                    }
                ]
            }).addTo(drawnItems);
        </script>
    </body>
    
    </html>

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_122290880]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/122290880
[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA6Zy46YGT5rWB5rCT5rCU6LSo_size_20_color_FFFFFF_t_70_g_se_x_16]: https://img-blog.csdnimg.cn/f031feb564114442870bf22950a7bb4d.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBA6Zy46YGT5rWB5rCT5rCU6LSo,size_20,color_FFFFFF,t_70,g_se,x_16
[https_github.com_bbecquet_Leaflet.PolylineDecorator]: https://github.com/bbecquet/Leaflet.PolylineDecorator
[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi