Method FillBox

Imaging/Sources/vtkImageCanvasSource2D.cxx:277–321

------------------------------------------------------------------------------ Draw a data. Only implentented for 2D extents.

//------------------------------------------------------------------------------
// Draw a data.  Only implentented for 2D extents.
void vtkImageCanvasSource2D::FillBox(int min0, int max0, int min1, int max1)
{
  int* extent;
  void* ptr;
  int z = this->DefaultZ;

  // Pre-multiply coords if needed
  if (this->Ratio[0] != 1.0)
  {
    min0 = int(double(min0) * this->Ratio[0]);
    max0 = int(double(max0) * this->Ratio[0]);
  }
  if (this->Ratio[1] != 1.0)
  {
    min1 = int(double(min1) * this->Ratio[1]);
    max1 = int(double(max1) * this->Ratio[1]);
  }
  if (this->Ratio[2] != 1.0)
  {
    z = int(double(z) * this->Ratio[2]);
  }

  // Clip the data to keep in bounds
  extent = this->ImageData->GetExtent();
  min0 = (min0 < extent[0]) ? extent[0] : min0;
  max0 = (max0 < extent[0]) ? extent[0] : max0;
  min0 = (min0 > extent[1]) ? extent[1] : min0;
  max0 = (max0 > extent[1]) ? extent[1] : max0;
  min1 = (min1 < extent[2]) ? extent[2] : min1;
  max1 = (max1 < extent[2]) ? extent[2] : max1;
  min1 = (min1 > extent[3]) ? extent[3] : min1;
  max1 = (max1 > extent[3]) ? extent[3] : max1;
  z = (z < extent[4]) ? extent[4] : z;
  z = (z > extent[5]) ? extent[5] : z;

  ptr = this->ImageData->GetScalarPointer(min0, min1, z);
  switch (this->ImageData->GetScalarType())
  {
    vtkTemplateMacro(vtkImageCanvasSource2DFillBox(
      this->ImageData, this->DrawColor, static_cast<VTK_TT*>(ptr), min0, max0, min1, max1));
    default:
      vtkErrorMacro(<< "FillBox: Cannot handle ScalarType.");
  }
  this->Modified();
}

//------------------------------------------------------------------------------
// Fill a tube (thick line for initial 2D implementation.