Method BuildRepresentation

Interaction/Widgets/vtkBiDimensionalRepresentation2D.cxx:536–676

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//------------------------------------------------------------------------------
void vtkBiDimensionalRepresentation2D::BuildRepresentation()
{
  if (this->GetMTime() > this->BuildTime ||
    this->Point1Representation->GetMTime() > this->BuildTime ||
    this->Point2Representation->GetMTime() > this->BuildTime ||
    this->Point3Representation->GetMTime() > this->BuildTime ||
    this->Point4Representation->GetMTime() > this->BuildTime ||
    (this->Renderer && this->Renderer->GetVTKWindow() &&
      this->Renderer->GetVTKWindow()->GetMTime() > this->BuildTime))
  {
    // Make sure that tolerance is consistent between handles and this representation
    this->Point1Representation->SetTolerance(this->Tolerance);
    this->Point2Representation->SetTolerance(this->Tolerance);
    this->Point3Representation->SetTolerance(this->Tolerance);
    this->Point4Representation->SetTolerance(this->Tolerance);

    // Now bring the lines up to date
    if (!this->Line1Visibility)
    {
      return;
    }

    double p1[3], p2[3], p3[3], p4[3];
    this->GetPoint1DisplayPosition(p1);
    this->GetPoint2DisplayPosition(p2);
    this->GetPoint3DisplayPosition(p3);
    this->GetPoint4DisplayPosition(p4);

    double wp1[3], wp2[3], wp3[3], wp4[3];
    this->GetPoint1WorldPosition(wp1);
    this->GetPoint2WorldPosition(wp2);
    this->GetPoint3WorldPosition(wp3);
    this->GetPoint4WorldPosition(wp4);

    this->LinePoints->SetPoint(0, p1);
    this->LinePoints->SetPoint(1, p2);
    this->LinePoints->SetPoint(2, p3);
    this->LinePoints->SetPoint(3, p4);
    this->LinePoints->Modified();

    this->LineCells->Reset();
    this->LineCells->InsertNextCell(2);
    this->LineCells->InsertCellPoint(0);
    this->LineCells->InsertCellPoint(1);

    if (this->Line2Visibility)
    {
      this->LineCells->InsertNextCell(2);
      this->LineCells->InsertCellPoint(2);
      this->LineCells->InsertCellPoint(3);
    }

    double line1Dist = sqrt(vtkMath::Distance2BetweenPoints(wp1, wp2));
    double line2Dist = 0;
    if (this->Line2Visibility)
    {
      line2Dist = sqrt(vtkMath::Distance2BetweenPoints(wp3, wp4));
    }