[地图SkyLine二次开发]框架(5)完结篇

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[地图SkyLine二次开发]框架(5)完结篇

2024-07-19 09:53:46 232人阅读

上节讲到，将菜单悬浮到地图上面，而且任何操作都不会让地图把菜单盖住。

这节带大家，具体开发一个简单的功能，来了进一步了解，这个框架。

1.想菜单中添加按钮

-上节定义的mainLayout.js文件里，定义按钮，并实例化它。

-将按钮添加到，ZZH.view.MainLayout中。

-运行看一下效果。

2.按钮加事件

-app/control文件夹里创建MainController.js里加上如下代码

-运行，并点击按钮测试，就是如下效果。

3.开发一个，画直线的功能。

-在MainController.js文件最下面加上如下代码。

//创建线对象var CreateTerrainProfile_Line = null;function CreateTerrainProfile_DrawLine() {    if (sgworld == null) {        sgworld = CreateSGObj();    }    CreateTerrainProfile_Line = null;    sgworld.AttachEvent("OnLButtonDown", CreateTerrainProfile_OnLButtonDown);    sgworld.AttachEvent("OnFrame", CreateTerrainProfile_OnFrame);    sgworld.AttachEvent("OnRButtonDown", CreateTerrainProfile_OnRButtonDown);    sgworld.Window.SetInputMode(1);}//创建线右键事件function CreateTerrainProfile_OnRButtonDown(Flags, X, Y) {    sgworld.DetachEvent("OnFrame", CreateTerrainProfile_OnFrame);    sgworld.DetachEvent("OnLButtonDown", CreateTerrainProfile_OnLButtonDown);    sgworld.DetachEvent("OnRButtonDown", CreateTerrainProfile_OnRButtonDown);    var lineGeometry = CreateTerrainProfile_Line.Geometry;    lineGeometry.Points.DeletePoint(lineGeometry.Points.Count - 1);    sgworld.Window.SetInputMode(0);    CreateTerrainProfile_Line.Geometry.EndEdit();    return true;}//创建线左键事件function CreateTerrainProfile_OnLButtonDown(Flags, X, Y) {    var groupid = sgworld.ProjectTree.FindItem("[画图]");    var startPoint = sgworld.Window.PixelToWorld(X, Y);    if (startPoint == null) {        return false;    }    else {        if (CreateTerrainProfile_Line == null) {            var lineString = sgworld.Creator.GeometryCreator.CreateLineStringGeometry([startPoint.Position.X, startPoint.Position.Y, 0, startPoint.Position.X, startPoint.Position.Y, 0]);            CreateTerrainProfile_Line = sgworld.Creator.CreatePolyline(lineString, sgworld.Creator.CreateColor(255, 0, 255, 155), 0, groupid, "polyline");            CreateTerrainProfile_Line.LineStyle.Width = -2;            CreateTerrainProfile_Line.Geometry.StartEdit();        }        else {            var lineGeometry = CreateTerrainProfile_Line.Geometry;            var endPoint = lineGeometry.EndPoint;            endPoint.X = startPoint.Position.X;            endPoint.Y = startPoint.Position.Y;            endPoint.Z = 0;            lineGeometry.Points.AddPoint(startPoint.Position.X, startPoint.Position.Y, 0);        }    }    return true;}//画线橡皮筋效果function CreateTerrainProfile_OnFrame() {    var mouseInfo = sgworld.Window.GetMouseInfo();    var endPoint = sgworld.Window.PixelToWorld(mouseInfo.X, mouseInfo.Y);    if (CreateTerrainProfile_Line != null) {        var lineGeometry = CreateTerrainProfile_Line.Geometry;        var lineEndPoint = lineGeometry.Endpoint;        lineEndPoint.X = endPoint.Position.X;        lineEndPoint.Y = endPoint.Position.Y;        lineEndPoint.Z = 0;    }}