89 lines
3.2 KiB
JavaScript
89 lines
3.2 KiB
JavaScript
/**
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* @description 平移旋转粒子效果(未完成)
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*/
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import Event from '../../Event'
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class EditParticle {
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constructor(sdk, model) {
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this.sdk = sdk
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this.model = model
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let handlerGE = new Cesium.ScreenSpaceEventHandler(viewer.canvas);
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this.MapEvent = new Event(this.sdk)
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// 获取双击的实体
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const entity = model;
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if (!entity) return;
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let diff = []; // 记录选中实体与鼠标位置信息的差异
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let type = null; // 记录选中的实体类型
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let positions = null; // 记录选中实体的位置信息
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let newPosition = null; // 记录鼠标移动的位置
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const position = changeToThree(event.position); // 获取鼠标双击点的位置，并转为世界坐标
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// 根据选中的实体类型获取位置信息
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if (entity.polygon) {
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if (!entity.polygon.hierarchy?._value) return;
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type = "polygon";
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positions = entity.polygon.hierarchy._value.positions;
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} else if (entity.polyline) {
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if (!entity.polyline.positions?._value) return;
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type = "polyline"
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positions = entity.polyline.positions._value;
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};
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// 记录选中实体与鼠标位置信息的差异
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positions.forEach(item => {
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diff.push({
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x: item.x - position.x,
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y: item.y - position.y,
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z: item.z - position.z,
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});
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});
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// 鼠标移动开始移动实体
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handlerGE.setInputAction(event => {
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// 获取移动点的位置，且将格式转为世界坐标
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const movePosition = changeToThree(event.endPosition);
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// 根据鼠标位置以及选中实体与鼠标位置信息的差异计算出移动后的实体位置
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newPosition = diff.map(item => ({
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x: item.x + movePosition.x,
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y: item.y + movePosition.y,
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z: item.z + movePosition.z,
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}));
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if (type === "polygon") {
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// 动态改变面的位置信息
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entity.polygon.hierarchy = new Cesium.CallbackProperty(function () {
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return new Cesium.PolygonHierarchy(newPosition);
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}, false);
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// 动态改变面边框的位置信息
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entity.polygon.positions = new Cesium.CallbackProperty(function () {
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return newPosition.concat([newPosition[0]]);
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}, false);
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} else if (type === "polyline") {
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// 动态改变面的位置信息
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entity.polygon.positions = new Cesium.CallbackProperty(function () {
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return newPosition;
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}, false);
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};
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}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
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// 鼠标右键结束移动
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handlerGE.setInputAction(() => {
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// 根据选中的实体类型确认位置信息
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if (type === "polygon") {
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entity.polygon.hierarchy = newPosition;
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entity.polyline.positions = newPosition.concat([newPosition[0]]);
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} else if (type === "polyline") {
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entity.polyline.positions = newPosition;
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};
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// 初始化
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diff = [];
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type = null;
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positions = null;
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isMove = false;
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newPosition = null;
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// 清除鼠标移动监听和点击右键监听
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handlerGE.removeInputAction(Cesium.ScreenSpaceEventType.MOUSE_MOVE);
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handlerGE.removeInputAction(Cesium.ScreenSpaceEventType.RIGHT_CLICK);
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}, Cesium.ScreenSpaceEventType.RIGHT_CLICK);
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}
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}
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export default EditParticle |