标签:io for 数据 sp on c cti 代码 ad
用SceneContral控件给数据添加基本高度以显示三维效果,网上的例子很多,如下:
private void addBaseHeight(IRasterLayer layer)
{
IRasterSurface pSurface = new RasterSurface();
IRaster raster = (IRaster)layer.Raster;
IRasterBandCollection rasterbands = raster as IRasterBandCollection;
IRasterBand rasterband = rasterbands.Item(0);
pSurface.RasterBand = rasterband;
ILayerExtensions layerextensions = layer as ILayerExtensions;
I3DProperties properties = new Raster3DPropertiesClass();
for (int i = 0; i < layerextensions.ExtensionCount; i++)
{
if (layerextensions.get_Extension(i) != null)
{
properties = layerextensions.get_Extension(i) as I3DProperties;
break;
}
}
properties.ZFactor = xx;
properties.BaseOption = esriBaseOption.esriBaseSurface;
properties.BaseSurface = pSurface as IFunctionalSurface;
properties.Apply3DProperties(layer);
}
新手复制代码调试时很容易遇到的错误是layerextensions的ExtensionCount很有可能为0,是因为不能将三维属性赋给图层后再一起加到SceneControl里面,必须将没有带三维属性的layer预先添加至SceneControl控件,然后再赋予三维属性。这样一来ExtensionCount就不会为0了。
另外扩展一点:给如FeatureLayer等非栅格数据设置基本高度,必须是要有其他Surface数据来作为支撑的,I3DProperties的BaseSurface属性不设则无效。
以AO方式给SceneControl控件设置BaseHeight
标签:io for 数据 sp on c cti 代码 ad
原文地址:http://www.cnblogs.com/qingwufeiyang/p/3998388.html