Method DrawCrossMarkers

IO/ExportPDF/vtkPDFContextDevice2D.cxx:1992–2022

------------------------------------------------------------------------------

//------------------------------------------------------------------------------
void vtkPDFContextDevice2D::DrawCrossMarkers(
  bool highlight, float* points, int n, unsigned char* colors, int nc_comps)
{
  const float markerSize = this->Pen->GetWidth();
  const float delta = markerSize * 0.5f;

  this->ApplyLineWidth(highlight ? 1.5f : 0.5f);
  this->ApplyLineType(vtkPen::SOLID_LINE);
  if (!colors)
  {
    this->ApplyStrokeColor(this->Pen->GetColorObject().GetData(), 4);
  }

  for (int i = 0; i < n; ++i)
  {
    float* p = points + i * 2;
    if (colors)
    {
      if (i != 0)
      {
        this->Stroke();
      }
      this->ApplyStrokeColor(colors + i * nc_comps, nc_comps);
    }
    HPDF_Page_MoveTo(this->Impl->Page, p[0] + delta, p[1] + delta);
    HPDF_Page_LineTo(this->Impl->Page, p[0] - delta, p[1] - delta);
    HPDF_Page_MoveTo(this->Impl->Page, p[0] + delta, p[1] - delta);
    HPDF_Page_LineTo(this->Impl->Page, p[0] - delta, p[1] + delta);
  }
  this->Stroke();
}

//------------------------------------------------------------------------------
void vtkPDFContextDevice2D::DrawPlusMarkers(