KnownLengthArray

VTKExamples/Java/Utilities/KnownLengthArray

Description

This example creates a VTK style float array. This can be easily interchanged with vtkIntArray, vtkDoubleArray, etc.

The terminology is as follows:

  • SetNumberOfComponents(): sets the number of elements that a tuple in the array will have. See VectorArrayKnownLength for an example with tuples with more than one element.

  • SetNumberOfValues(): sets the number of tuples the array will have. See UnknownLengthArray for an example where the number of values is not known in advance.

Other Languages

See (Cxx)

Code

KnownLengthArray.java

import vtk.vtkNativeLibrary;
import vtk.vtkFloatArray;

public class KnownLengthArray 
{
  //-----------------------------------------------------------------
  // 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 s[]) 
 {  
    vtkFloatArray Distances = new vtkFloatArray();
    Distances.SetName("Distances");
    Distances.SetNumberOfComponents(1);
    Distances.SetNumberOfValues(5);

    //set values
    for(int i = 0; i < Distances.GetNumberOfTuples(); i++)
    {
      double f = i + 0.1;
      Distances.SetValue(i, f);
    }

    //get values
    for(int i = 0; i < Distances.GetNumberOfTuples(); i++)
    {
      double f = Distances.GetValue(i);
      System.out.println(f);
    }       

  }
}