Method FindPositionInOriginalFunction

Common/Misc/vtkFunctionParser.cxx:2243–2278

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//------------------------------------------------------------------------------
int vtkFunctionParser::FindPositionInOriginalFunction(const int& pos)
{
  // Copy the value.
  int origPos = pos;

  if (this->Function && this->FunctionWithSpaces)
  {
    size_t withSpacesLen = strlen(this->FunctionWithSpaces);
    size_t withoutSpacesLen = strlen(this->Function);

    int counter = 0;
    for (size_t i = 0; i < withSpacesLen; ++i)
    {
      // If we have covered all the characters excluding the spaces.
      if (counter == static_cast<int>(withoutSpacesLen) || counter == pos)
      {
        return origPos;
      }

      char currentChar = this->FunctionWithSpaces[i];
      if (currentChar == ' ')
      {
        // Every time we hit a whitespace increment the origPos
        // as the pos is counted without spaces.
        ++origPos;
        continue;
      }

      // This needs to be incremented for all the characters except
      // spaces.
      ++counter;
    }
  }

  return origPos;
}

//------------------------------------------------------------------------------
void vtkFunctionParser::UpdateNeededVariables()