Method FillTriangle

Imaging/Sources/vtkImageCanvasSource2D.cxx:563–595

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

//------------------------------------------------------------------------------
// Fill a tube (thick line for initial 2D implementation).
void vtkImageCanvasSource2D::FillTriangle(int a0, int a1, int b0, int b1, int c0, int c1)
{
  void* ptr;
  int z = this->DefaultZ;

  // Pre-multiply coords if needed
  if (this->Ratio[0] != 1.0)
  {
    a0 = static_cast<int>(static_cast<double>(a0) * this->Ratio[0]);
    b0 = static_cast<int>(static_cast<double>(b0) * this->Ratio[0]);
    c0 = static_cast<int>(static_cast<double>(c0) * this->Ratio[0]);
  }
  if (this->Ratio[1] != 1.0)
  {
    a1 = static_cast<int>(static_cast<double>(a1) * this->Ratio[1]);
    b1 = static_cast<int>(static_cast<double>(b1) * this->Ratio[1]);
    c1 = static_cast<int>(static_cast<double>(c1) * this->Ratio[1]);
  }
  if (this->Ratio[2] != 1.0)
  {
    z = static_cast<int>(static_cast<double>(z) * this->Ratio[2]);
  }

  ptr = this->ImageData->GetScalarPointer();
  switch (this->ImageData->GetScalarType())
  {
    vtkTemplateMacro(vtkImageCanvasSource2DFillTriangle(
      this->ImageData, this->DrawColor, static_cast<VTK_TT*>(ptr), a0, a1, b0, b1, c0, c1, z));
    default:
      vtkErrorMacro(<< "FillTriangle: Cannot handle ScalarType.");
  }
  this->Modified();
}

//------------------------------------------------------------------------------
// Draw a point.  Only implentented for 2D images.