Maptalks 是一个基于 WebGL 的地理信息可视化引擎,它提供了丰富的地图组件和交互功能。在 Maptalks 中,可以通过设置地图的倾斜角(tilt)和旋转角(bearing)来实现地图的倾斜与旋转效果。
以下是一个简单的示例,展示了如何在 Maptalks 中设置地图的倾斜角和旋转角:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Maptalks 倾斜与旋转示例</title> <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/maptalks@1.4.0/dist/maptalks.min.css"> <script src="https://cdn.jsdelivr.net/npm/maptalks@1.4.0/dist/maptalks.min.js"></script> </head> <body> <div id="map" style="width: 100%; height: 100%; position: absolute;"></div> <script> var map = new maptalks.Map('map', { center: [121.4737, 31.2304], zoom: 12, tilt: 60, // 设置倾斜角,范围为 -90 到 90 bearing: 0 // 设置旋转角,范围为 0 到 360 }); </script> </body> </html>
在这个示例中,我们创建了一个 Maptalks 地图实例,并通过设置 `tilt` 和 `bearing` 属性来调整地图的倾斜角和旋转角。你可以根据需要修改这些值来实现不同的倾斜与旋转效果。
<!DOCTYPE html> <html> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>地图 - 倾斜与旋转</title> <style type="text/css"> html,body{margin:0px;height:100%;width:100%} .container{width:100%;height:100%} </style> <link rel="stylesheet" href="https://unpkg.com/maptalks/dist/maptalks.css"> <script type="text/javascript" src="https://unpkg.com/maptalks/dist/maptalks.min.js"></script> <body> <div id="map" class="container"></div> <script> var map = new maptalks.Map('map', { center: [-0.113049,51.498568], zoom: 14, baseLayer: new maptalks.TileLayer('base', { urlTemplate: 'https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png', subdomains: ['a','b','c','d'], attribution: '© <a href="http://osm.org">OpenStreetMap</a> contributors, © <a href="https://carto.com/">CARTO</a>' }), layers: [ new maptalks.VectorLayer('v') ] }); addMarkers(); var pitch = 0, d = 'up', bearing = 0; var paused = false; changeView(); function changeView() { if (pitch > 50) { d = 'down'; } else if (pitch < 0) { d = 'up'; } if (d === 'down') { pitch--; } else { pitch++; } map.setPitch(pitch); map.setBearing(bearing++); if (!paused) { requestAnimationFrame(changeView); } } function reset() { requestAnimationFrame(function() { paused = true; pitch = 0; bearing = 0; map.setPitch(0); map.setBearing(0); }); } function addMarkers() { var center = map.getCenter(); var m1 = new maptalks.Marker(center.add(-0.008, -0.008)); var m2 = new maptalks.Marker(center.add(0.008, -0.008)); var m3 = new maptalks.Marker(center.add(-0.008, 0.008)); var m4 = new maptalks.Marker(center.add(0.008, 0.008)); map.getLayer('v').addGeometry(m1, m2, m3, m4); } // 'item':content of button,support HTML.'height': height in pixels,'click':click function,'children': displayed menus by hovering var toolbar = new maptalks.control.Toolbar({ items: [ { 'item' : 'pause', 'click' : function() { paused = true; } }, { 'item' : 'start', 'click' : function() { paused = false; changeView(); } }, { 'item' : 'reset', 'click' : function() { reset(); } } ] }).addTo(map); </script> </body> </html>
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