Function Test

Common/DataModel/Testing/Cxx/otherColorTransferFunction.cxx:15–132

#include <iostream>

int Test(ostream& strm)
{
  int i, j, k;
  vtkColorTransferFunction* ctf1 = vtkColorTransferFunction::New();

  // actual test
  strm << "Test vtkColorTransferFunction Start" << std::endl;

  ctf1->AddRGBPoint(0.0, 1, 0, 0);
  ctf1->AddHSVPoint(1.0, 1, 1, .6);
  ctf1->AddRGBSegment(2.0, 1, 1, 1, 10.0, 0, 0, 0);
  ctf1->AddHSVSegment(11.0, 1, 1, .6, 15.0, .1, .2, .3);
  strm << *ctf1;

  double rgb[3];
  ctf1->GetColor(.5, rgb);
  strm << "GetColor(.5) = " << rgb[0] << ", " << rgb[1] << ", " << rgb[2] << std::endl;

  strm << "GetRedValue(.5) = " << ctf1->GetRedValue(.5) << std::endl;
  strm << "GetGreenValue(.5) = " << ctf1->GetGreenValue(.5) << std::endl;
  strm << "GetBlueValue(.5) = " << ctf1->GetBlueValue(.5) << std::endl;

  strm << "MapValue(12) = " << (int)ctf1->MapValue(12)[0] << ", " << (int)ctf1->MapValue(12)[1]
       << ", " << (int)ctf1->MapValue(12)[2] << std::endl;

  strm << "GetRange = " << ctf1->GetRange()[0] << "," << ctf1->GetRange()[1] << std::endl;

  double table[3][256];

  ctf1->GetTable(0, 15, 256, &table[0][0]);
  strm << "GetTable(0, 15, 256, &table[0][0])" << std::endl;
  for (i = 0; i < 256; i++)
  {
    for (j = 0; j < 3; j++)
    {
      strm << table[j][i] << " ";
    }
    strm << std::endl;
  }

  strm << "BuildFunctionFrom(0, 15, 256, &table[0][0])" << std::endl;
  vtkColorTransferFunction* ctf2 = vtkColorTransferFunction::New();
  ctf2->BuildFunctionFromTable(0, 15, 256, &table[0][0]);

  ctf2->SetColorSpaceToRGB();
  ctf2->GetTable(0, 15, 512);

  ctf2->SetColorSpaceToHSV();
  ctf2->GetTable(0, 15, 512);

  ctf1->DeepCopy(ctf2);
  strm << "ctf1->DeepCopy(ctf2)" << std::endl;
  strm << *ctf1;

  ctf1->RemovePoint(10);
  strm << *ctf1;

  ctf1->RemoveAllPoints();