Engine中如何渲染LiDAR数据（.las)?

string lasdfile = @E:testlas.lasd;

ILasDataset lasdataset = new LasDatasetClass();

lasdataset.Init(lasdfile);

ILasFile lasfile = lasdataset.get_File(0);

ILasDatasetLayer laslayer = new LasDatasetLayerClass();

laslayer.Dataset = lasdataset;

laslayer.Name = test.las;

ILasStatistics lasstat = lasfile.GetStatistics();



ISimpleStatistics simstat = lasstat.GetAttributeStatistics(esriLasAttributeType.esriLasIntensity);

int min = (Int32)simstat.Minimum;

int max = (Int32)simstat.Maximum;



IRgbColor fromColor = new RgbColorClass();

fromColor.Red = 0;

fromColor.Green = 0;

fromColor.Blue = 0;

IColor toColor = new RgbColorClass();

fromColor.Red = 255;

fromColor.Green = 255;

fromColor.Blue = 255;



IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRampClass();

colorRamp.Size = max;

colorRamp.FromColor = fromColor;

colorRamp.ToColor = toColor;

bool createColorRamp;

colorRamp.CreateRamp(out createColorRamp);



IEnumColors pEnumColors = colorRamp.Colors;

pEnumColors.Reset();



ILasAttributeRenderer lasattri = new LasUniqueValueRendererClass();

lasattri.Attribute = esriLasAttributeType.esriLasIntensity;



ITinUniqueValueRenderer tinuvren = lasattri as ITinUniqueValueRenderer;

for (int i = 0; i < max; i++)

{

IColor SymColor = pEnumColors.Next();

IMarkerSymbol MarkSym = new SimpleMarkerSymbolClass();

MarkSym.Color = SymColor;

tinuvren.AddValue(i.ToString(), i.ToString(), MarkSym as ISymbol);

tinuvren.AddValue(i.ToString(), i.ToString(), MarkSym as ISymbol);

}



laslayer.ClearRenderers();

laslayer.AddRenderer((ITinRenderer)lasattri);



ILegendInfo LegenInfo = laslayer as ILegendInfo;

for (int k = 0; k < LegenInfo.LegendGroupCount; k++)

{

ILegendGroup legenGrp = LegenInfo.get_LegendGroup(k);

legenGrp.Heading = ;

legenGrp.Visible = false;

ILegendClass legenCls = legenGrp.get_Class(0);

}



axSceneControl1.Scene.AddLayer(laslayer, false);

axSceneControl1.SceneGraph.RefreshViewers();

string lasdfile = @E:testlas.lasd;

ILasDataset lasdataset = new LasDatasetClass();

lasdataset.Init(lasdfile);

ILasFile lasfile = lasdataset.get_File(0);

ILasDatasetLayer laslayer = new LasDatasetLayerClass();

laslayer.Dataset = lasdataset;

laslayer.Name = test.las;



IRgbColor fromColor = new RgbColorClass();

fromColor.Red = 0;

fromColor.Green = 0;

fromColor.Blue = 0;

IColor toColor = new RgbColorClass();

fromColor.Red = 255;

fromColor.Green = 255;

fromColor.Blue = 255;



int BreakCount = 9;

IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRampClass();

colorRamp.Size = BreakCount;

colorRamp.FromColor = toColor;

colorRamp.ToColor = fromColor;

bool createColorRamp;

colorRamp.CreateRamp(out createColorRamp);



IEnumColors pEnumColors = colorRamp.Colors;

pEnumColors.Reset();



ITinColorRampRenderer TinColRamRend = new LasPointElevationRendererClass();

IDatasetRenderer DatasetRen = TinColRamRend as IDatasetRenderer;

DatasetRen.Dataset = lasdataset as IDataset;

TinColRamRend.BreakCount = BreakCount;

for (int i = 0; i < BreakCount; i++)

{

IColor SymColor = pEnumColors.Next();

IMarkerSymbol MarkSym = new SimpleMarkerSymbolClass();

MarkSym.Color = SymColor;

TinColRamRend.set_Symbol(i, MarkSym as ISymbol);

}



laslayer.ClearRenderers();

laslayer.AddRenderer((ITinRenderer)TinColRamRend);

axSceneControl1.Scene.AddLayer((ILayer)laslayer);