标签:ase visible screens prototype cee click flow scree 图片
cesium 官网的api文档介绍地址cesium官网api,里面详细的介绍 cesium 各个类的介绍,还有就是在线例子:cesium 官网在线例子,这个也是学习 cesium 的好素材。
1.cesium1.65api版本贴地贴模型标绘工具效果
2.源代码demo下载
效果图如下:
实现思路:
- 鼠标左键Cesium.ScreenSpaceEventType.LEFT_CLICK
- 鼠标移动Cesium.ScreenSpaceEventType.MOUSE_MOVE
- 鼠标右键Cesium.ScreenSpaceEventType.RIGHT_CLICK
鼠标左键事件,获取点击地图的每个坐标点;鼠标移动事件,动态扑捉鼠标移动状态,下一个坐标点位置;鼠标右键意味着标绘结束状态。
var DrawTool = function (obj) { if (!obj.viewer || !obj) { console.warn("缺少必要参数!--viewer"); return; } this.viewer = obj.viewer; this.hasEdit = obj.hasEdit; this.toolArr = []; this.handler = new Cesium.ScreenSpaceEventHandler(this.viewer.scene.canvas); this.show = obj.drawEndShow; } DrawTool.prototype = { startDraw: function (opt) { var that = this; // if (this.hasEdit) { // this.bindEdit(); // } if (opt.type == "polyline") { var polyline = new CreatePolyline(this.viewer, opt.style); polyline.start(function (evt) { if (that.hasEdit) { that.unbindEdit(); polyline.startModify(opt.modifySuccess); that.lastSelectEntity = polyline; } if (opt.success) opt.success(evt); if (that.show == false) polyline.setVisible(false); }); this.toolArr.push(polyline); } if (opt.type == "polygon") { var polygon = new CreatePolygon(this.viewer, opt.style); polygon.start(function () { if (that.hasEdit) { that.unbindEdit(); polygon.startModify(); that.lastSelectEntity = polygon; } if (opt.success) opt.success(polygon); if (that.show == false) polygon.setVisible(false); }); this.toolArr.push(polygon); } if (opt.type == "billboard") { var billboard = new CreateBillboard(this.viewer, opt.style); billboard.start(function () { if (that.hasEdit) { that.unbindEdit(); billboard.startModify(); that.lastSelectEntity = billboard; } if (opt.success) opt.success(billboard); if (that.show == false) billboard.setVisible(false); }); this.toolArr.push(billboard); } if (opt.type == "circle") { var circle = new CreateCircle(this.viewer, opt.style); circle.start(function () { if (that.hasEdit) { that.unbindEdit(); circle.startModify(); that.lastSelectEntity = circle; } if (opt.success) opt.success(circle); if (that.show == false) circle.setVisible(false); }); this.toolArr.push(circle); } if (opt.type == "rectangle") { var rectangle = new CreateRectangle(this.viewer, opt.style); rectangle.start(function () { if (that.hasEdit) { that.unbindEdit(); rectangle.startModify(); that.lastSelectEntity = rectangle; } if (opt.success) opt.success(rectangle); if (that.show == false) rectangle.setVisible(false); }); this.toolArr.push(rectangle); } //重写材质 if (opt.type == "flowPolyline") { var polyline = new CreatePolyline(this.viewer, opt.style); polyline.start(function () { if (that.hasEdit) { that.unbindEdit(); polyline.startModify(); } if (opt.success) opt.success(polyline); }); this.toolArr.push(polyline); } }, createByPositions: function (opt) { if (this.hasEdit) { this.bindEdit(); } if (!opt) opt = {}; if (opt.type == "polyline") { var polyline = new CreatePolyline(this.viewer, opt.style); polyline.createByPositions(opt.positions, opt.success); this.toolArr.push(polyline); } if (opt.type == "polygon") { var polygon = new CreatePolygon(this.viewer, opt.style); polygon.createByPositions(opt.positions, opt.success); this.toolArr.push(polygon); } if (opt.type == "billboard") { var billboard = new CreateBillboard(this.viewer, opt.style); billboard.createByPositions(opt.positions, function(){ if(opt.success) opt.success(billboard) }); this.toolArr.push(billboard); } }, destroy: function () { for (var i = 0; i < this.toolArr.length; i++) { var obj = this.toolArr[i]; obj.destroy(); } }, lastSelectEntity: null, bindEdit: function () { var that = this; this.handler.setInputAction(function (evt) { //单机开始绘制 var pick = that.viewer.scene.pick(evt.position); if (Cesium.defined(pick) && pick.id) { for (var i = 0; i < that.toolArr.length; i++) { if (pick.id.objId == that.toolArr[i].objId && (that.toolArr[i].state == 1||that.toolArr[i].state == 2)) { if (that.lastSelectEntity) { that.lastSelectEntity.endModify(); } that.toolArr[i].startModify(); that.lastSelectEntity = that.toolArr[i]; break; } } } }, Cesium.ScreenSpaceEventType.LEFT_CLICK); }, unbindEdit: function () { for (var i = 0; i < this.toolArr.length; i++) { this.toolArr[i].endModify(); } } }
封装定义标绘点、线、面、矩形js类,里面涉及到细节函数,自行看对应的源码demo:
DrawTool标绘工具初始化以及调用:
更多详情见下面链接文章:
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cesium1.65api版本贴地贴模型标绘工具效果(附源码下载)
标签:ase visible screens prototype cee click flow scree 图片
原文地址:https://www.cnblogs.com/giserhome/p/12272837.html