剛做完項目中廣告牌的效果,順便分享一下。更多可以參考官網的例子查看詳情
先上效果圖:
1.添加廣告牌:
2.鼠標滑過效果(放大了一點點):
3.鼠標點擊後,視野定位到具體的位置:
1.添加廣告牌代碼:
viewer.entities.add({
name: '1號大棚',
position: Cesium.Cartesian3.fromDegrees(117.5673, 36.7035),
label: { //文字標籤
text: '1號大棚',
font: '500 30px Helvetica',// 15pt monospace
scale: 0.5,
style: Cesium.LabelStyle.FILL,
fillColor: Cesium.Color.WHITE,
pixelOffset: new Cesium.Cartesian2(110, -70), //偏移量
showBackground: true,
backgroundColor: new Cesium.Color(26 / 255, 196 / 255, 228 / 255, 1.0)
},
billboard: { //圖標
image: require('./img/bg.png'),
width: 200,
height: 140,
pixelOffset: new Cesium.Cartesian2(100, -35), //偏移量
},
});
補充說明:billboard的image路徑,因爲我是react的項目,所以要用require引進來,普通項目的話,不需要require。
2.鼠標滑過效果代碼:
const handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
handler.setInputAction(function (movement) {
const pickedObject = viewer.scene.pick(movement.endPosition);
if (Cesium.defined(pickedObject) && (pickedObject.id === entity)) {
entity.billboard.scale = 1.2;
entity.label.pixelOffset = new Cesium.Cartesian2(110, -80);
entity.label.scale = 0.7;
} else {
entity.billboard.scale = 1.0;
entity.label.pixelOffset = new Cesium.Cartesian2(110, -70);
entity.label.scale = 0.5;
}
}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
3.點擊廣告牌後視野定位代碼:
const handler = new Cesium.ScreenSpaceEventHandler(viewer.scene.canvas);
handler.setInputAction(function (click) {
const pick = viewer.scene.pick(click.position);
if (pick && pick.id) {
if (pick.id._name === '1號大棚') {
viewer.flyTo(entity, {
duration: 2,
offset: {
heading: Cesium.Math.toRadians(0.0),
pitch: Cesium.Math.toRadians(-10),
range: 100
}
});
}
}
}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
我貼出來的代碼中只寫了"1號大棚"的效果,多個廣告牌自己封裝函數就好啦。