public static vtkLookupTable Create(LutPreset preset, double rangeMin, double rangeMax) { var lut = new vtkLookupTable(); lut.SetTableRange(rangeMin, rangeMax); switch (preset) { case LutPreset.BlueRed: lut.SetHueRange(0.66, 1.0); lut.SetNumberOfColors(128); break; case LutPreset.RedBlue: lut.SetHueRange(1.0, 0.66); lut.SetNumberOfColors(128); //lut.SetNumberOfTableValues(2); //lut.SetTableValue(0, 1.0, 0.0, 0.0, 1.0); //lut.SetTableValue(1, 0.0, 0.0, 1.0, 1.0); break; case LutPreset.Rainbow: lut.SetHueRange(0.0, 0.66); lut.SetNumberOfColors(256); break; } lut.Build(); return lut; }
protected DatasetUnit() { lookupTable = vtkLookupTable.New(); lookupTable.SetNumberOfColors(100); lookupTable.SetHueRange(0.67, 0.0); lookupTable.Build(); scalarBarActor.SetOrientationToHorizontal(); scalarBarActor.SetLookupTable(lookupTable); scalarBarActor.SetTitle(fieldName); scalarBarActor.GetAnnotationTextProperty().SetColor(0, 0, 0); scalarBarActor.GetTitleTextProperty().SetColor(0, 0, 0); scalarBarActor.GetLabelTextProperty().SetColor(0, 0, 0); scalarBarActor.GetAnnotationTextProperty().SetFontSize(20); scalarBarActor.GetTitleTextProperty().SetFontSize(20); scalarBarActor.GetLabelTextProperty().SetFontSize(20); scalarBarActor.GetAnnotationTextProperty().SetFontFamilyToArial(); scalarBarActor.GetTitleTextProperty().SetFontFamilyToArial(); scalarBarActor.GetLabelTextProperty().SetFontFamilyToArial(); scalarBarActor.GetAnnotationTextProperty().ItalicOff(); scalarBarActor.GetTitleTextProperty().ItalicOff(); scalarBarActor.GetLabelTextProperty().ItalicOff(); scalarBarActor.GetAnnotationTextProperty().BoldOff(); scalarBarActor.GetTitleTextProperty().BoldOff(); scalarBarActor.GetLabelTextProperty().BoldOff(); scalarBarActor.SetUnconstrainedFontSize(true); scalarBarActor.SetBarRatio(0.15); scalarBarActor.SetNumberOfLabels(11); }
//切片模式_初始化颜色 private void InitializeColor_Slice(ExGrid Grid) { m_LookupTable = vtkLookupTable.New(); m_LookupTable.SetTableRange(Grid.Min, Grid.Max); //蓝色->红色 m_LookupTable.SetHueRange(0.667, 0); m_LookupTable.SetNumberOfColors(100); m_LookupTable.Build(); //线性插值透明度 m_PiecewiseFunction = vtkPiecewiseFunction.New(); m_PiecewiseFunction.AddPoint(Grid.Min, 1); m_PiecewiseFunction.AddPoint(Grid.Max, 1); }
//镂空模式_初始化颜色 private void InitializeColor_HollowOut(ExGrid Grid) { m_LookupTable = vtkLookupTable.New(); m_LookupTable.SetTableRange(Grid.Min, Grid.Max); //蓝色->红色 m_LookupTable.SetHueRange(0.666667, 0); m_LookupTable.SetNumberOfColors(100); m_LookupTable.Build(); //设定标量值的颜色 m_ColorTransferFunction = vtkColorTransferFunction.New(); for (int i = 0; i < 100; i += 10) { var color = m_LookupTable.GetTableValue(i); double Range = Grid.Max - Grid.Min; m_ColorTransferFunction.AddRGBPoint(Grid.Min + i * Range / 100.0, color[0], color[1], color[2]); } m_ColorTransferFunction.Build(); //线性插值透明度 m_PiecewiseFunction = vtkPiecewiseFunction.New(); // [,) InitRanges(); foreach (var range in m_IntersectRanges) { double Min = range.Min; double Max = range.Max; ////由于VTK的特性,对Max进行修正 //如果透明 if (range.Transparent) { m_PiecewiseFunction.AddSegment(Min, Transparency_Yes, Max, Transparency_Yes); } //不透明 else { Min = Min + EPSILON; Max = Max - EPSILON; m_PiecewiseFunction.AddSegment(Min, Transparency_Not, Max, Transparency_Not); } } }
//普通模式_初始化颜色 private void InitializeColor_Normal(ExGrid Grid) { m_LookupTable = vtkLookupTable.New(); m_LookupTable.SetTableRange(Grid.Min, Grid.Max); //蓝色->红色 m_LookupTable.SetHueRange(0.667, 0); m_LookupTable.SetNumberOfColors(100); m_LookupTable.Build(); //设定标量值的颜色 m_ColorTransferFunction = vtkColorTransferFunction.New(); for (int i = 0; i < 100; i += 10) { var color = m_LookupTable.GetTableValue(i); double Range = Grid.Max - Grid.Min; m_ColorTransferFunction.AddRGBPoint(Grid.Min + i * Range / 100.0, color[0], color[1], color[2]); } m_ColorTransferFunction.Build(); //线性插值透明度 m_PiecewiseFunction = vtkPiecewiseFunction.New(); m_PiecewiseFunction.AddPoint(Grid.Min, 1); m_PiecewiseFunction.AddPoint(Grid.Max, 1); }
private void RenderXYZColor() { FileStream fs = null; StreamReader sr = null; String sLineBuffer; String[] sXYZ; char[] chDelimiter = new char[] { ' ', '\t', ';' }; double[] xyz = new double[3]; double[] rgb = new double[3]; vtkPoints points = vtkPoints.New(); vtkPoints colors = vtkPoints.New(); int cnt = 0; try { // in case file must be open in another application too use "FileShare.ReadWrite" fs = new FileStream(m_FileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); sr = new StreamReader(fs); vtkDoubleArray colorScalor = new vtkDoubleArray(); int n = 1; while (!sr.EndOfStream) { sLineBuffer = sr.ReadLine(); cnt++; sXYZ = sLineBuffer.Split(chDelimiter, StringSplitOptions.RemoveEmptyEntries); if (sXYZ == null || sXYZ.Length != 6) { MessageBox.Show("data seems to be in wrong format at line " + cnt, "Format Exception", MessageBoxButtons.OK); return; } xyz[0] = double.Parse(sXYZ[0], CultureInfo.InvariantCulture) * 11100; xyz[1] = double.Parse(sXYZ[1], CultureInfo.InvariantCulture) * 11100; xyz[2] = double.Parse(sXYZ[2], CultureInfo.InvariantCulture); rgb[0] = double.Parse(sXYZ[0], CultureInfo.InvariantCulture); rgb[1] = double.Parse(sXYZ[1], CultureInfo.InvariantCulture); rgb[2] = double.Parse(sXYZ[2], CultureInfo.InvariantCulture); points.InsertNextPoint(xyz[0], xyz[1], xyz[2]); colors.InsertNextPoint(rgb[0], rgb[1], rgb[2]); colorScalor.InsertNextTuple1(n++); } vtkPolyData polydata = vtkPolyData.New(); polydata.SetPoints(points); polydata.GetPointData().SetScalars(colorScalor); //设置点的Scalar(标量)属性 vtkVertexGlyphFilter glyphFilter = vtkVertexGlyphFilter.New(); glyphFilter.SetInputConnection(polydata.GetProducerPort()); vtkLookupTable lookupTable = new vtkLookupTable(); lookupTable.SetNumberOfColors(n); // SetSetTableValue(vtkIdType indx, double r, double g, double b, double a); Random random = new Random(); for (int i = 0; i < n; i++) { double[] tmp = colors.GetPoint(i); double r = tmp[0]; double g = tmp[1]; double b = tmp[2]; lookupTable.SetTableValue(i, r, g, b, 1); } // Visualize vtkPolyDataMapper mapper = vtkPolyDataMapper.New(); mapper.SetInputConnection(glyphFilter.GetOutputPort()); mapper.SetLookupTable(lookupTable); mapper.SetScalarRange(1, n); vtkActor actor = vtkActor.New(); actor.SetMapper(mapper); actor.GetProperty().SetPointSize(1); //actor.GetProperty().SetColor(1, 0.5, 0); // add our actor to the renderer m_Renderer.AddActor(actor); imgPropList.Add(actor); m_Renderer.ResetCamera(); //Rerender the screen m_RenderWindow.Render(); m_Renderer.Render(); } catch (IOException ex) { MessageBox.Show(ex.Message, "IOException", MessageBoxButtons.OK); } finally { if (sr != null) { sr.Close(); sr.Dispose(); sr = null; } } }
public void ChangeColorNumber(int numb) { colorLookupTable.SetNumberOfColors(numb); ScalarBar.SetNumberOfLabels(numb); }
private void DrawRainBow() { //# First create pipeline a simple pipeline that reads a structure grid //# and then extracts a plane from the grid. The plane will be colored //# differently by using different lookup tables. //# //# Note: the Update method is manually invoked because it causes the //# reader to read; later on we use the output of the reader to set //# a range for the scalar values. vtkMultiBlockPLOT3DReader pl3d = vtkMultiBlockPLOT3DReader.New(); pl3d.SetXYZFileName(@"..\..\Data\combxyz.bin"); pl3d.SetQFileName(@"..\..\Data\combq.bin"); pl3d.SetScalarFunctionNumber(100); pl3d.SetVectorFunctionNumber(202); pl3d.Update(); vtkDataObject pl3d_output = pl3d.GetOutput().GetBlock(0); vtkStructuredGridGeometryFilter planeFilter = vtkStructuredGridGeometryFilter.New(); planeFilter.SetInputData(pl3d_output); planeFilter.SetExtent(1, 100, 1, 100, 7, 7); vtkLookupTable lut = vtkLookupTable.New(); vtkPolyDataMapper planeMapper = vtkPolyDataMapper.New(); planeMapper.SetLookupTable(lut); planeMapper.SetInputConnection(planeFilter.GetOutputPort()); //planeMapper.SetScalarRange(pl3d_output.) vtkActor planeActor = vtkActor.New(); planeActor.SetMapper(planeMapper); //this creates an outline around the data vtkStructuredGridOutlineFilter outlineFilter = vtkStructuredGridOutlineFilter.New(); outlineFilter.SetInputData(pl3d_output); vtkPolyDataMapper outlineMapper = vtkPolyDataMapper.New(); outlineMapper.SetInputConnection(outlineFilter.GetOutputPort()); vtkActor outlineActor = vtkActor.New(); outlineActor.SetMapper(outlineMapper); //Much of the following is commented out. To try different lookup tables. //This create a black to white lut //lut.SetHueRange(0, 0); //lut.SetSaturationRange(0, 0); //lut.SetValueRange(0.2, 1.0); //This creates a red to blue lut //lut.SetHueRange(0.0, 0.677); //This creates a blue to red lue lut.SetHueRange(0.667, 0.0); //This creates a weird effect. the Build() method cause lookup //table to allocate memory and create a table based on the correct //hue, saturatioin, value, and alpha range. Here we then //manully overwrite the value generated by the Build() method. lut.SetNumberOfColors(256); lut.Build(); for (int i = 0; i < 16; i++) { lut.SetTableValue(i * 16, (float)Color.Red.R / 256, (float)Color.Red.G / 256, (float)Color.Red.B / 256, 1); lut.SetTableValue(i * 16 + 1, (float)Color.Green.R / 256, (float)Color.Green.G / 256, (float)Color.Green.B / 256, 1); lut.SetTableValue(i * 16 + 2, (float)Color.Blue.R / 256, (float)Color.Blue.G / 256, (float)Color.Blue.B / 256, 1); lut.SetTableValue(i * 16 + 3, (float)Color.Black.R / 256, (float)Color.Black.G / 256, (float)Color.Black.B / 256, 1); } //Create the renderwindow, the render and both actors vtkRenderer ren = vtkRenderer.New(); vtkRenderWindow renWin = myRenderWindowControl.RenderWindow; renWin.AddRenderer(ren); //Add the actors to the renderer, set the backgroud ren.AddActor(outlineActor); ren.AddActor(planeActor); ren.SetBackground(0.1, 0.2, 0.4); ren.TwoSidedLightingOff(); }