ArcGlobe三维开发：将点从屏幕坐标系转成投影坐标系

最新推荐文章于 2021-11-12 15:08:32 发布

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最新推荐文章于 2021-11-12 15:08:32 发布 · 737 阅读

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将鼠标点击得到的屏幕坐标系上的点，先转成地理坐标系，之后通过获取指定数据集的投影坐标系，转换成该投影坐标系下的坐标。

IPoint pPnt = ReturnMousePoint(m_pGlobeControl.GlobeDisplay, x, y);
IGeoDataset pGeoDataset = m_HandlingFeatureLayer as IGeoDataset;
if (pGeoDataset.SpatialReference != null)
{
     ISpatialReferenceFactory ispReferenceFactory = new SpatialReferenceEnvironmentClass();
     IGeographicCoordinateSystem earthref = ispReferenceFactory.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984);
     pPnt.SpatialReference = earthref;
     pPnt.Project(pGeoDataset.SpatialReference);
}

public static IPoint ReturnMousePoint(IGlobeDisplay globeDisplay, int dScreenX, int dScreenY)
{
            double dLon, dLat, dAlt;
            IPoint point = new PointClass();
            ESRI.ArcGIS.Analyst3D.ISceneViewer sceneViewer = globeDisplay.ActiveViewer;
            ESRI.ArcGIS.Analyst3D.ICamera camera = sceneViewer.Camera;
            ES