DiscretizableColorTransferFunction
VTKExamples/Java/Utilities/DiscretizableColorTransferFunction
Description¶
vtkDiscretizableColorTransferFunction object is a cross between a vtkColorTransferFunction and vtkLookupTable selectively combining the functionality of both.
This class is a vtkColorTransferFunction allowing users to specify the RGB control points that control the color transfer function. At the same time, by setting Discretize to 1 (true), one can force the transfer function to only have NumberOfValues discrete colors.
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Question
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Code¶
DiscretizableColorTransferFunction.java
import vtk.vtkNativeLibrary; import vtk.vtkDiscretizableColorTransferFunction; public class DiscretizableColorTransferFunction { // ----------------------------------------------------------------- // Load VTK library and print which library was not properly loaded static { if (!vtkNativeLibrary.LoadAllNativeLibraries()) { for (vtkNativeLibrary lib : vtkNativeLibrary.values()) { if (!lib.IsLoaded()) { System.out.println(lib.GetLibraryName() + " not loaded"); } } } vtkNativeLibrary.DisableOutputWindow(null); } // ----------------------------------------------------------------- public static void main(String args[]) { vtkDiscretizableColorTransferFunction discretizableColorTransferFunction = new vtkDiscretizableColorTransferFunction(); discretizableColorTransferFunction.DiscretizeOn(); discretizableColorTransferFunction.SetNumberOfValues(2); discretizableColorTransferFunction.AddRGBPoint(0.0, 1, 0, 0); discretizableColorTransferFunction.AddRGBPoint(10.0, 0, 1, 0); discretizableColorTransferFunction.Build(); double color[] = new double[3]; discretizableColorTransferFunction.GetColor(1.0, color); System.out.println(color[0] +" " + color[1] + " " + color[2]); discretizableColorTransferFunction.GetColor(5.0, color); System.out.println(color[0] +" " + color[1] + " " + color[2]); } }