ArcGlobe三维开发之九————由指定路径创建动画(实现）

绝地灬酷狼 2022-08-26 11:26 115阅读 0赞

上一篇博文主要介绍了根据路径实现飞行动画的接口，本篇博文则讲解其实现过程。这里我封装了一个生成动画的类，用于动画的操作，目前只是实现了动画的生成，动画的保存以及动画的加载，后面的博文再陆续探讨动画的播放控制等功能。创建动画类代码如下：

/// <summary>
        /// 根据路径创建飞行动画
        /// </summary>
        class AnimationCreator
        {
    
            #region"Create Animation from Path"
    
            ///<summary> 由路径来创建一个Camera动画.这条路径有图层提供一条三维线要素</summary>
            /// 
            ///<param name="globe">IGlobe接口</param>
            ///<param name="layer">一个包含PolyLine的ILayer接口</param>
            ///<param name="featureID">包含路径的要素ID.Example: 123</param>
            ///  
            ///<remarks></remarks>
            public void CreateAnimationFromPath ()
            {
                IGlobeDisplay globeDisplay = pGlobe.GlobeDisplay;
                IScene scene = globeDisplay.Scene;
    
                // 获取动画扩展
                IBasicScene2 basicScene2 =  scene  as IBasicScene2;
                IAnimationExtension animationExtension = basicScene2.AnimationExtension;
    
                //获取路径
                IFeatureLayer featureLayer = pLayer as IFeatureLayer; 
                IFeatureClass featureClass = featureLayer.FeatureClass;
                IFeature feature = featureClass.GetFeature(pFeatureID);
                IGeometry geometry = feature.Shape;
    
                //创建AGAnimationUtils和AGImportPathOptions对象
                ESRI.ArcGIS.Animation.IAGAnimationUtils agAnimationUtils = new AGAnimationUtilsClass();
                ESRI.ArcGIS.Animation.IAGImportPathOptions agImportPathOptions = new AGImportPathOptionsClass();
    
                // 设置AGImportPathOptions的属性
                agImportPathOptions.BasicMap = (IBasicMap)pGlobe;
                agImportPathOptions.AnimationTracks = (IAGAnimationTracks)pGlobe; 
                agImportPathOptions.AnimationType = new AnimationTypeGlobeCameraClass();
                agImportPathOptions.AnimatedObject = pGlobe.GlobeDisplay.ActiveViewer.Camera; //动画对象
                agImportPathOptions.PathGeometry = geometry;                      //动画轨迹
                agImportPathOptions.ConversionType = ESRI.ArcGIS.Animation.esriFlyFromPathType.esriFlyFromPathObsAndTarget;
                agImportPathOptions.LookaheadFactor = 0.05;
                agImportPathOptions.RollFactor = 0;
    
                agImportPathOptions.AnimationEnvironment = animationExtension.AnimationEnvironment;
                IAGAnimationContainer AGAnimationContainer = animationExtension.AnimationTracks.AnimationObjectContainer;
    
                //创建并保存动画
                agAnimationUtils.CreateFlybyFromPath(AGAnimationContainer,agImportPathOptions);
                if (System.IO.File.Exists(SaveFilePath))
                {
                    System.IO.File.Delete(SaveFilePath);
                    agAnimationUtils.SaveAnimationFile(AGAnimationContainer,SaveFilePath,esriArcGISVersion.esriArcGISVersion10);
                }
               
            }
            #endregion
        }

把生成的.aga文件导入即可播放。效果图如下：

![Center][]

[Center]: /images/20220824/ec83afc407d942229803198414b119d6.png