<!DOCTYPE html>
<html>
<head>
<meta charset='UTF-8'/>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no'/>
<link href='http://bigemap.com:9000/bigemap-gl.js/v1.1.0/Widgets/widgets.css' rel='stylesheet'/>
<script src='http://bigemap.com:9000/bigemap-gl.js/v1.1.0/bigemap-gl.js'></script>
<style>
body {
margin: 0;
padding: 0;
}
#container {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
.bmgl-widget-credits {
display: none
}
</style>
<title>Google Map Streets</title>
</head>
<body>
<div id='container'></div>
<script>
bmgl.Config.HTTP_URL = 'http://bigemap.com:9000';
var viewer = new bmgl.Viewer('container', {
mapId: 'bigemap.zhongkexingtu',
requestRenderMode: false
});
let rectangleInstanceArr = [];
//创建线段
for (let i = 0; i < 30000; i++) {
var PolyLineInstance = new bmgl.GeometryInstance({
geometry: new bmgl.PolylineGeometry({
positions: bmgl.Cartesian3.fromDegreesArray([
119.7 + i / 1000,
30.2 + i / 1000,
119.8 + i / 1000,
30.2 + i / 1000,
117.8 + i / 1000,
30.2 + i / 1000,
117.2 + i / 1000,
30.2 + i / 1000,
]),
width: 10.0,
vertexFormat: bmgl.PolylineColorAppearance.VERTEX_FORMAT,
}),
attributes: {
color: bmgl.ColorGeometryInstanceAttribute.fromColor(
i % 2 == 0 ? bmgl.Color.GREEN : bmgl.Color.RED
),
},
id: "a" + i
});
rectangleInstanceArr.push(PolyLineInstance);
}
var lineinst = new bmgl.Primitive({
geometryInstances: rectangleInstanceArr,
//折线外观
appearance: new bmgl.PolylineColorAppearance({
translucent: false
}),
asynchronous: false, // 确定在准备就绪之前是异步创建基元还是阻止创建基元。
})
viewer.scene.primitives.add(
lineinst
)
var arr = [
{
id: 'aaa',
xx: lineinst
},
{
id: 'bb',
xx: lineinst
},
]
// ------------------------------------------------------
//创建多边形
var polygon = new bmgl.GeometryInstance({
geometry: new bmgl.PolygonGeometry({
polygonHierarchy: new bmgl.PolygonHierarchy(
bmgl.Cartesian3.fromDegreesArray([
108, 45, 109, 48, 104, 48, 103, 45
])
)
}),
attributes: {
color: bmgl.ColorGeometryInstanceAttribute.fromColor(
bmgl.Color.RED
),
},
id: "gon"
})
// rectangleInstanceArr.push(polygon)]
var goninst = new bmgl.Primitive({
geometryInstances: [polygon],
//多边形外观
appearance: new bmgl.PerInstanceColorAppearance({
translucent: false,
flat: true,
closed: false,
}),
asynchronous: false, // 确定在准备就绪之前是异步创建基元还是阻止创建基元。
})
//获取单个图形 并改变颜色
// var goninst_attr = goninst.getGeometryInstanceAttributes(entity.id)
//
// goninst_attr.color = bmgl.ColorGeometryInstanceAttribute.toValue(bmgl.Color.RED);
let gonpp = viewer.scene.primitives.add(
goninst
)
gonpp.readyPromise.then(function (model) {
viewer.zoomTo(model)
})
var lastA = ''
var lastA_Color = ""
//定义事件
var handler = new bmgl.ScreenSpaceEventHandler(viewer.canvas);
handler.setInputAction(function (e) {
var entity = viewer.scene.pick(e.endPosition);
if (entity) {
if (lastA) {
lastA.color = lastA_Color
lastA = ""
lastA_Color = ""
}
console.log(entity.primitive)
var attr = entity.primitive.getGeometryInstanceAttributes(entity.id)
lastA = attr
lastA_Color = attr.color
attr.color = bmgl.ColorGeometryInstanceAttribute.toValue(bmgl.Color.PINK);
} else {
if (lastA) {
lastA.color = lastA_Color
lastA = ""
lastA_Color = ""
}
}
}, bmgl.ScreenSpaceEventType.MOUSE_MOVE);
</script>
</body>
</html>
源码