#include "assistantvanishingpoint.h"

#include "guidelineline.h"

// TnzCore includes

#include "tgl.h"

//*****************************************************************************************

//    TAssistantVanishingPoint implementation

//*****************************************************************************************

TAssistantVanishingPoint::TAssistantVanishingPoint(TMetaObject &object):

  TAssistant(object)

{

  m_points.push_back(TAssistantPoint(

    TAssistantPoint::CircleCross ));

}

void

TAssistantVanishingPoint::getGuidelines(

  const TPointD &position,

  const TAffine &toTool,

  TGuidelineList &outGuidelines ) const

{

  outGuidelines.push_back(TGuidelineP(

    new TGuidelineInfiniteLine(

      toTool*m_points.front().position,

      position )));

}

void

TAssistantVanishingPoint::draw(TToolViewer *viewer) const {

  double pixelSize = sqrt(tglGetPixelSize2());

  const TPointD &p = m_points.front().position;

  TPointD dx(20.0*pixelSize, 0.0);

  TPointD dy(0.0, 10.0*pixelSize);

  drawSegment(p-dx-dy, p+dx+dy, pixelSize);

  drawSegment(p-dx+dy, p+dx-dy, pixelSize);

}