KnownLengthArray

vtk-examples/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)

Question

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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);
    }       

  }
}