cesium点击面高亮事件
主要功能:比如你加载了json、geojson或者topojson的数据。加载出来后,分为很多个面,现在要实现点击一个面,这个面变颜色;再点击另一个面,另一个面高亮,之前的面复原。(有不懂得,请加相关学习群:854184700)
下面上代码:
function hightlightLine() {
var temp = new Array();
function linehHghtlight(nameId) {
var exists = temp.indexOf(nameId);
if (exists <= -1) {
temp.push(nameId);
} else {
temp.splice(exists, 1); //删除对应的nameID
}
}
viewer.screenSpaceEventHandler.setInputAction(function onLeftClick(movement) {
var pickedFeature = viewer.scene.pick(movement.position);
//判断之前是否有高亮面存在
if (highlightFace) {
highlightFace.material = highlightFace.material0;
}
pickedFeature.id.polygon.material0 = pickedFeature.id.polygon.material;
pickedFeature.id.polygon.material = Cesium.Color.WHITE;
highlightFace = pickedFeature.id.polygon;
showDivPositionOld = pickedFeature.id.properties;
if (typeof (pickedFeature) != "undefined") //鼠标是否点到面上
var id = pickedFeature.id;
linehHghtlight(id);
}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
}