public static void GetCurrentSurfaceMax(ILayer ilayer_0, out double double_0, out double double_1)
{
ISurface surfaceFromLayer = SurfaceInfo.GetSurfaceFromLayer(ilayer_0);
if (surfaceFromLayer != null)
{
if (surfaceFromLayer is ITinAdvanced)
{
ITinAdvanced tinAdvanced = surfaceFromLayer as ITinAdvanced;
IEnvelope extent = tinAdvanced.Extent;
double_0 = ((extent.Width > extent.Height) ? extent.Width : extent.Height);
double_1 = extent.ZMax;
}
else
{
IRasterSurface rasterSurface = surfaceFromLayer as IRasterSurface;
IRasterProps rasterProps = rasterSurface.Raster as IRasterProps;
IEnvelope extent = rasterProps.Extent;
double_0 = ((extent.Width > extent.Height) ? extent.Width : extent.Height);
IRasterBandCollection rasterBandCollection = rasterProps as IRasterBandCollection;
IRasterBand rasterBand = rasterBandCollection.Item(0);
IRasterStatistics statistics = rasterBand.Statistics;
double_1 = statistics.Maximum;
}
}
else
{
double_0 = 0.0;
double_1 = 0.0;
}
}
/// <summary>
/// 获取分析图层及Surfer
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void comboBoxOpen_SelectedIndexChanged(object sender, EventArgs e)
{
if (comboBoxOpen.Items.Count > 0)
{
string LayerName = comboBoxOpen.SelectedItem.ToString();
m_Layer = GetLayerByName(ref LayerName);
if (m_Layer is IRasterLayer)//读取Raster数据的ISurface
{
IRasterLayer pRasterLayer = m_Layer as IRasterLayer;
IRasterSurface pRasterSurface = new RasterSurfaceClass();
pRasterSurface.PutRaster(pRasterLayer.Raster, 0);
m_Surface = pRasterSurface as ISurface;
}
else if (m_Layer is ITinLayer)//读取TIN数据的ISurface
{
ITinLayer pTinLayer = m_Layer as ITinLayer;
m_Surface = pTinLayer.Dataset as ISurface;
}
if (m_Surface == null)
{
MessageBox.Show("请选择需要进行分析的DEM数据", "提示！");
return;
}
pTool3DLineOfSight.m_Layer = m_Layer; //将当前选中的图层传给通视分析工具
pTool3DLineOfSight.m_SurFace = m_Surface; //将当前获取的Surface传给通视分析工具
//下面是根据获取的Surface来自动判断是否应用曲率和折射校正
bool bCurvEnabled;
bCurvEnabled = false;
ISurface pSurface = m_Surface;
IGeoDataset pGeoDataset;
if (pSurface is ITin)
{
pGeoDataset = pSurface as IGeoDataset;
}
else
{
IRasterSurface pRasterSurf = pSurface as IRasterSurface;
pGeoDataset = pRasterSurf.RasterBand.RasterDataset as IGeoDataset;
}
ISpatialReference pSpatialReference = pGeoDataset.SpatialReference;
ILinearUnit pLinearUnit = pSpatialReference.ZCoordinateUnit;
if (pLinearUnit != null)
{
if (pSpatialReference is IProjectedCoordinateSystem)//当投影ProjectedCoordinateSystem时使用应用曲率和折射校正
{
bCurvEnabled = true;
}
}
checkBoxCurv.Checked = bCurvEnabled;
}
}
public IRasterSurface GetSurfFormLayer(IRasterLayer pRLayer)
{
I3DProperties p3DProp = Get3DPropsFromLayer((pRLayer));
//获取图层的基准面
IRasterSurface pRSurf = (IRasterSurface)p3DProp.BaseSurface;
//如果空 则取栅格的第一个波段
if (pRSurf == null)
{
//MessageBox.Show("null");
pRSurf = new RasterSurfaceClass();
IRasterBandCollection bands = (IRasterBandCollection)pRLayer.Raster;
pRSurf.RasterBand = bands.Item(0);
}
return(pRSurf);
}
public void SetlayerSurface(IRasterLayer pRlayer, int ZFactor)
{
//获取3DProp
I3DProperties p3DProp = Get3DPropsFromLayer((ILayer)pRlayer);
p3DProp.BaseOption = esriBaseOption.esriBaseSurface;
//设置基准高
IRasterSurface pRSurf = GetSurfFormLayer(pRlayer);
p3DProp.BaseSurface = (IFunctionalSurface)pRSurf;
//设置Z因子
p3DProp.ZFactor = ZFactor;
//图层渲染优先级，越小优先级越大；
p3DProp.DepthPriorityValue = 0;
p3DProp.Apply3DProperties(pRlayer);//I3DProperties中唯一的一个方法，用来执行变更后的属性。
}
public override void OnClick()
{
_plugin.CurrentTool = this;
if (this.isurface_0 != null)
{
IGeoDataset geoDataset;
if (this.isurface_0 is ITin)
{
geoDataset = (this.isurface_0 as IGeoDataset);
}
else
{
IRasterSurface rasterSurface = this.isurface_0 as IRasterSurface;
geoDataset = (rasterSurface.RasterBand.RasterDataset as IGeoDataset);
}
ISpatialReference spatialReference = geoDataset.SpatialReference;
ILinearUnit zCoordinateUnit = spatialReference.ZCoordinateUnit;
if (zCoordinateUnit != null && spatialReference is IProjectedCoordinateSystem)
{
ToolSceneLineOfSight.bCurvEnabled = true;
}
}
}
/// <summary>
/// 获取分析图层及Surfer
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void comboBoxOpen_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
if (comboBoxOpen.Items.Count > 0)
{
label.Text = "";
Cls3DMarkDraw.DeleteAllElementsWithName(m_pCurrentSceneControl.Scene, sRefPlaneName);
Cls3DMarkDraw.DeleteAllElementsWithName(m_pCurrentSceneControl.Scene, ContourName);
m_pCurrentSceneControl.SceneGraph.RefreshViewers();
m_ScenePoly = null;
m_StaPolygon = null;
m_SurFace = null;
txtArea2DSel.Text = "";
txtAreaAbove.Text = "";
txtAreaBelow.Text = "";
txtPara.Text = "";
txtPlaneHeight.Text = "";
txtVolumeAbove.Text = "";
txtVolumeBelow.Text = "";
DrawGeo.Enabled = false;
sldPlaneHeight.Enabled = false;
btncount.Enabled = false;
string LayerName = comboBoxOpen.SelectedItem.ToString();
ILayer pLayer = GetLayerByName(ref LayerName);
if (pLayer is IRasterLayer)//读取Raster数据的ISurface
{
IRasterLayer pRasterLayer = pLayer as IRasterLayer;
IGeoDataset pDataset = pRasterLayer as IGeoDataset;
ISpatialReference psr = pDataset.SpatialReference;
if (!(psr is IProjectedCoordinateSystem))
{
label.Text = "该数据为地理坐标，计算结果无效仅供参考！";
}
IRasterSurface pRasterSurface = new RasterSurfaceClass();
pRasterSurface.PutRaster(pRasterLayer.Raster, 0);
m_SurFace = pRasterSurface as ISurface;
DrawGeo.Enabled = false;
m_IsTin = false;
}
else if (pLayer is ITinLayer)//读取TIN数据的ISurface
{
ITinLayer pTinLayer = pLayer as ITinLayer;
IGeoDataset pDataset = pTinLayer as IGeoDataset;
ISpatialReference psr = pDataset.SpatialReference;
if (!(psr is IProjectedCoordinateSystem))
{
label.Text = "该数据为地理坐标，计算结果无效仅供参考！";
}
m_SurFace = pTinLayer.Dataset as ISurface;
m_IsTin = true;
DrawGeo.Enabled = true;
}
if (m_SurFace == null)
{
MessageBox.Show("请选择需要进行分析的DEM数据", "提示！");
return;
}
if (m_StaPolygon == null)
{
if (m_SurFace is ITin)
{
ITin pTin = m_SurFace as ITin;
sldPlaneHeight.Maximum = Convert.ToInt32(pTin.Extent.ZMax);
sldPlaneHeight.Minimum = Convert.ToInt32(pTin.Extent.ZMin);
}
else
{
IRasterSurface pRasterSurface = m_SurFace as IRasterSurface;
IRasterStatistics pRasterStatistic = pRasterSurface.RasterBand.Statistics;
sldPlaneHeight.Maximum = Convert.ToInt32(pRasterStatistic.Maximum);
sldPlaneHeight.Minimum = Convert.ToInt32(pRasterStatistic.Minimum);
}
double Vale = sldPlaneHeight.Maximum + sldPlaneHeight.Minimum;
Vale = Vale / 2;
txtPlaneHeight.Text = Vale.ToString();
Vale = Convert.ToDouble(txtPlaneHeight.Text);
sldPlaneHeight.Value = Convert.ToInt32(Vale);
}
else
{
double zrange;
zrange = m_StaPolygon.Envelope.ZMax - m_StaPolygon.Envelope.ZMin;
sldPlaneHeight.Maximum = Convert.ToInt32(m_StaPolygon.Envelope.ZMax + zrange);
sldPlaneHeight.Minimum = Convert.ToInt32(m_StaPolygon.Envelope.ZMin);
sldPlaneHeight.Value = Convert.ToInt32(Math.Round(m_StaPolygon.Envelope.ZMin + (zrange * 0.5)));
txtPlaneHeight.Text = sldPlaneHeight.Value.ToString();
}
sldPlaneHeight.Enabled = true;
btncount.Enabled = true;
}
}
catch
{
return;
}
}
private ISurface GetSurfaceFromLayer(ILayer player)
{
try
{
IRasterLayer pRLayer;
I3DProperties p3DProp = null;
ILayerExtensions pLE;
IRasterSurface pSurface = null;;
ITinLayer pTLayer;
if (player is IRasterLayer)
{
pRLayer = player as IRasterLayer;
pLE = player as ILayerExtensions;
for (int i = 0; i <= pLE.ExtensionCount - 1; i++)
{
if (pLE.get_Extension(i) is I3DProperties)
{
p3DProp = pLE.get_Extension(i) as I3DProperties;
break;
}
}
if (p3DProp == null)
{
IRasterBandCollection pBands;
if (pRLayer.Raster != null)
{
pSurface = new RasterSurfaceClass();
pBands = pRLayer.Raster as IRasterBandCollection;
pSurface.RasterBand = pBands.Item(0);
}
return(pSurface as ISurface);
}
else
{
pSurface = p3DProp.BaseSurface as IRasterSurface;
}
return(pSurface as ISurface);
}
else
{
if (player is ITinLayer)
{
pTLayer = player as ITinLayer;
return(pTLayer.Dataset as ISurface);
}
}
return(null);
}
catch (Exception ex)
{
string g = ex.Message;
return(null);
}
}