Method FillPixel

Imaging/Sources/vtkImageCanvasSource2D.cxx:1368–1401

------------------------------------------------------------------------------ Fill a colored area with another color. (like connectivity) All pixels connected to pixel (x, y) get replaced by draw color.

// Fill a colored area with another color. (like connectivity)
// All pixels connected to pixel (x, y) get replaced by draw color.
void vtkImageCanvasSource2D::FillPixel(int x, int y)
{
  void* ptr;
  int* ext = this->ImageData->GetExtent();
  int z = this->DefaultZ;

  // Pre-multiply coords if needed
  if (this->Ratio[0] != 1.0)
  {
    x = static_cast<int>(static_cast<double>(x) * this->Ratio[0]);
  }
  if (this->Ratio[1] != 1.0)
  {
    y = static_cast<int>(static_cast<double>(y) * this->Ratio[1]);
  }
  if (this->Ratio[2] != 1.0)
  {
    z = static_cast<int>(static_cast<double>(z) * this->Ratio[2]);
  }

  z = (z < ext[4]) ? ext[4] : z;
  z = (z > ext[5]) ? ext[5] : z;

  ptr = this->ImageData->GetScalarPointer(x, y, z);

  switch (this->ImageData->GetScalarType())
  {
    vtkTemplateMacro(vtkImageCanvasSource2DFill(
      this->ImageData, this->DrawColor, static_cast<VTK_TT*>(ptr), x, y));
    default:
      vtkErrorMacro(<< "Fill: Cannot handle ScalarType.");
  }
  this->Modified();
}

//------------------------------------------------------------------------------
void vtkImageCanvasSource2D::SetExtent(int* extent)