Method BuildRepresentation

Rendering/Annotation/vtkLegendScaleActor.cxx:329–431

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//------------------------------------------------------------------------------
void vtkLegendScaleActor::BuildRepresentation(vtkViewport* viewport)
{
  // Specify the locations of the axes.
  const int* size = viewport->GetSize();

  this->RightAxis->GetPositionCoordinate()->SetValue(
    size[0] - this->RightBorderOffset, this->CornerOffsetFactor * this->BottomBorderOffset, 0.0);
  this->RightAxis->GetPosition2Coordinate()->SetValue(size[0] - this->RightBorderOffset,
    size[1] - this->CornerOffsetFactor * this->TopBorderOffset, 0.0);

  this->TopAxis->GetPositionCoordinate()->SetValue(
    size[0] - this->CornerOffsetFactor * this->RightBorderOffset, size[1] - this->TopBorderOffset,
    0.0);
  this->TopAxis->GetPosition2Coordinate()->SetValue(
    this->CornerOffsetFactor * this->LeftBorderOffset, size[1] - this->TopBorderOffset, 0.0);

  this->LeftAxis->GetPositionCoordinate()->SetValue(
    this->LeftBorderOffset, size[1] - this->CornerOffsetFactor * this->TopBorderOffset, 0.0);
  this->LeftAxis->GetPosition2Coordinate()->SetValue(
    this->LeftBorderOffset, this->CornerOffsetFactor * this->BottomBorderOffset, 0.0);

  if (this->LegendVisibility)
  {
    this->BottomAxis->GetPositionCoordinate()->SetValue(
      this->CornerOffsetFactor * this->LeftBorderOffset, 2 * this->BottomBorderOffset, 0.0);
    this->BottomAxis->GetPosition2Coordinate()->SetValue(
      size[0] - this->CornerOffsetFactor * this->RightBorderOffset, 2 * this->BottomBorderOffset,
      0.0);
  }
  else
  {
    this->BottomAxis->GetPositionCoordinate()->SetValue(
      this->CornerOffsetFactor * this->LeftBorderOffset, this->BottomBorderOffset, 0.0);
    this->BottomAxis->GetPosition2Coordinate()->SetValue(
      size[0] - this->CornerOffsetFactor * this->RightBorderOffset, this->BottomBorderOffset, 0.0);
  }

  if (this->GridVisibility)
  {
    this->GridActor->SetHorizontalLinesLeftPoints(this->LeftAxis->GetTickPositions());
    this->GridActor->SetHorizontalLinesRightPoints(this->RightAxis->GetTickPositions());
    this->GridActor->SetVerticalLinesBottomPoints(this->BottomAxis->GetTickPositions());
    this->GridActor->SetVerticalLinesTopPoints(this->TopAxis->GetTickPositions());
  }

  this->UpdateAxisRange(this->RightAxis, viewport);
  this->UpdateAxisRange(this->TopAxis, viewport, true);
  this->UpdateAxisRange(this->LeftAxis, viewport, true);
  this->UpdateAxisRange(this->BottomAxis, viewport);

  if (this->LegendVisibility)
  {
    // Update the position
    double x1 = 0.33333 * size[0];
    double delX = x1 / 4.0;

    this->LegendPoints->SetPoint(0, x1, 10, 0);
    this->LegendPoints->SetPoint(1, x1 + delX, 10, 0);