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#include "Shunt.h"

Shunt::Shunt() : Element()
{
}

Shunt::~Shunt()
{
}

void Shunt::UpdateSwitchesPosition()
{
    if(m_parentList[0]) {
	    m_pointList[1] = GetSwitchPoint(m_parentList[0], m_pointList[0], m_pointList[2]);
	}
    else
	{
	    m_pointList[1] = m_pointList[0];
	}
}

void Shunt::Move(wxPoint2DDouble position)
{
    SetPosition(m_movePos + position - m_moveStartPt);
    for(int i = 2; i < (int)m_pointList.size(); i++) {
	    m_pointList[i] = m_movePts[i] + position - m_moveStartPt;
	}
	if(!m_parentList[0]) {
		 m_pointList[0] = m_movePts[0] + position - m_moveStartPt;
	}
    UpdateSwitchesPosition();
}

void Shunt::MoveNode(Element* element, wxPoint2DDouble position)
{
    if(element) {
	    if(element == m_parentList[0]) {
		    m_pointList[0] = m_movePts[0] + position - m_moveStartPt;
		}
	}
    else
	{
	    if(m_activeNodeID == 1) {
		    m_pointList[0] = m_movePts[0] + position - m_moveStartPt;
		    m_parentList[0] = NULL;
		}
	}

    // Recalculate switches positions
    UpdateSwitchesPosition();
}

void Shunt::StartMove(wxPoint2DDouble position)
{
    m_moveStartPt = position;
    m_movePts = m_pointList;
    m_movePos = m_position;
}

void Shunt::RemoveParent(Element* parent)
{
    if(parent == m_parentList[0]) {
	    m_parentList[0] = NULL;
	    UpdateSwitchesPosition();
	}
}

bool Shunt::NodeContains(wxPoint2DDouble position)
{
    wxRect2DDouble nodeRect(m_pointList[0].m_x - 5.0 - m_borderSize, m_pointList[0].m_y - 5.0 - m_borderSize,
                            10 + 2.0 * m_borderSize, 10 + 2.0 * m_borderSize);

    if(nodeRect.Contains(position)) {
	    m_activeNodeID = 1;
	    return true;
	}

    m_activeNodeID = 0;
    return false;
}

bool Shunt::SetNodeParent(Element* parent)
{
    if(parent && m_activeNodeID != 0) {
	    wxRect2DDouble nodeRect(m_pointList[0].m_x - 5.0 - m_borderSize, m_pointList[0].m_y - 5.0 - m_borderSize,
	                            10 + 2.0 * m_borderSize, 10 + 2.0 * m_borderSize);

	    if(parent->Intersects(nodeRect)) {
		    m_parentList[0] = parent;

		    // Centralize the node on bus.
		    wxPoint2DDouble parentPt = parent->RotateAtPosition(
		        m_pointList[0], -parent->GetAngle());  // Rotate click to horizontal position.
		    parentPt.m_y = parent->GetPosition().m_y;  // Centralize on bus.
		    parentPt = parent->RotateAtPosition(parentPt, parent->GetAngle());
		    m_pointList[0] = parentPt;

		    UpdateSwitchesPosition();
		    return true;
		}
	    else
		{
		    m_parentList[0] = NULL;
		}
	}
    return false;
}

void Shunt::UpdateNodes()
{
    if(m_parentList[0]) {
	    wxRect2DDouble nodeRect(m_pointList[0].m_x - 5.0 - m_borderSize, m_pointList[0].m_y - 5.0 - m_borderSize,
	                            10 + 2.0 * m_borderSize, 10 + 2.0 * m_borderSize);

	    if(!m_parentList[0]->Intersects(nodeRect)) {
		    m_parentList[0] = NULL;
		    UpdateSwitchesPosition();
		}
	}
}

void Shunt::RotateNode(Element* parent)
{
    if(parent == m_parentList[0]) {
	    m_pointList[0] = parent->RotateAtPosition(m_pointList[0], m_rotationAngle);
	    UpdateSwitchesPosition();
	}
}