Transformer.cpp

/*
 *  Copyright (C) 2017  Thales Lima Oliveira <thales@ufu.br>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
#include "Transformer.h"
#include "../../forms/TransformerForm.h"
 
Transformer::Transformer() : Branch()
{
    m_elementType = TYPE_TRANSFORMER;
    for (int i = 0; i < 2; i++) {
        for (int j = 0; j < 3; j++) { m_electricalData.faultCurrent[i][j] = std::complex<double>(0.0, 0.0); }
    }
}
Transformer::Transformer(wxString name) : Branch()
{
    m_elementType = TYPE_TRANSFORMER;
    for (int i = 0; i < 2; i++) {
        for (int j = 0; j < 3; j++) { m_electricalData.faultCurrent[i][j] = std::complex<double>(0.0, 0.0); }
    }
    m_electricalData.name = name;
}
Transformer::~Transformer() {}
 
bool Transformer::AddParent(Element* parent, wxPoint2DDouble position)
{
    if (parent) {
        // First bus.
        if (m_parentList.size() == 0) {
            m_position = position;
            m_parentList.push_back(parent);
            parent->AddChild(this);
            wxPoint2DDouble parentPt =
                parent->RotateAtPosition(position, -parent->GetAngle());        // Rotate click to horizontal position.
            parentPt.m_y = parent->GetPosition().m_y;                           // Centralize on bus.
            parentPt = parent->RotateAtPosition(parentPt, parent->GetAngle());  // Rotate back.
            m_pointList.push_back(parentPt);                                    // First point
            m_pointList.push_back(GetSwitchPoint(parent, parentPt, m_position));
 
            wxRect2DDouble genRect(0, 0, 0, 0);
            m_switchRect.push_back(genRect);
 
            return false;
        }
        // Second bus.
        else if (parent != m_parentList[0]) {
            m_parentList.push_back(parent);
            parent->AddChild(this);
            wxPoint2DDouble parentPt =
                parent->RotateAtPosition(position, -parent->GetAngle());        // Rotate click to horizontal position.
            parentPt.m_y = parent->GetPosition().m_y;                           // Centralize on bus.
            parentPt = parent->RotateAtPosition(parentPt, parent->GetAngle());  // Rotate back.
 
            // Get the average between the two bus points.
            m_position =
                wxPoint2DDouble((m_pointList[0].m_x + parentPt.m_x) / 2.0, (m_pointList[0].m_y + parentPt.m_y) / 2.0);
            // Set the transformer rectangle.
            m_width = 70.0;
            m_height = 40.0;
            SetPosition(m_position);  // This method calculates the rectangle propely.
            // Set the "side" points.
            m_pointList.push_back(
                wxPoint2DDouble(m_rect.GetPosition() + wxPoint2DDouble(-10 - m_borderSize, m_height / 2.0)));
            m_pointList.push_back(
                wxPoint2DDouble(m_rect.GetPosition() + wxPoint2DDouble(m_width + 10 + m_borderSize, m_height / 2.0)));
 
            // Set first switch point.
            wxPoint2DDouble secondPoint = parentPt;
            if (m_pointList.size() > 2) { secondPoint = m_pointList[2]; }
            m_pointList[1] = GetSwitchPoint(m_parentList[0], m_pointList[0], secondPoint);
 
            // Set the second switch point.
            m_pointList.push_back(GetSwitchPoint(parent, parentPt, m_pointList[m_pointList.size() - 1]));
 
            m_pointList.push_back(parentPt);  // Last point.
            m_inserted = true;
 
            wxRect2DDouble genRect(0, 0, 0, 0);
            m_switchRect.push_back(genRect);
            UpdateSwitches();
            UpdatePowerFlowArrowsPosition();
 
            return true;
        }
    }
    return false;
}
 
bool Transformer::Contains(wxPoint2DDouble position) const
{
    wxPoint2DDouble ptR = RotateAtPosition(position, -m_angle);
    return m_rect.Contains(ptR);
}
 
//void Transformer::Draw(wxPoint2DDouble translation, double scale) const
//{
//  OpenGLColour elementColour;
//  if (m_online) {
//      if (m_dynEvent)
//          elementColour = m_dynamicEventColour;
//      else
//          elementColour = m_onlineElementColour;
//  }
//  else
//      elementColour = m_offlineElementColour;
//
//  if (m_inserted) {
//      // Draw selection (layer 1).
//      if (m_selected) {
//          // Push the current matrix on stack.
//          glLineWidth(1.5 + m_borderSize * 2.0);
//          glColor4dv(m_selectionColour.GetRGBA());
//          DrawLine(m_pointList);
//          glPushMatrix();
//          // Rotate the matrix around the object position.
//          glTranslated(m_position.m_x, m_position.m_y, 0.0);
//          glRotated(m_angle, 0.0, 0.0, 1.0);
//          glTranslated(-m_position.m_x, -m_position.m_y, 0.0);
//
//          DrawCircle(m_rect.GetPosition() + wxPoint2DDouble(20.0, 20.0), 20 + (m_borderSize + 1.5) / scale, 20,
//              GL_POLYGON);
//          DrawCircle(m_rect.GetPosition() + wxPoint2DDouble(50.0, 20.0), 20 + (m_borderSize + 1.5) / scale, 20,
//              GL_POLYGON);
//
//          glPopMatrix();
//
//          // Draw nodes selection.
//          if (m_pointList.size() > 0) {
//              DrawCircle(m_pointList[0], 5.0 + m_borderSize / scale, 10, GL_POLYGON);
//              if (m_inserted) {
//                  DrawCircle(m_pointList[m_pointList.size() - 1], 5.0 + m_borderSize / scale, 10, GL_POLYGON);
//              }
//          }
//      }
//
//      // Draw transformer (layer 2).
//      // Transformer line
//      glLineWidth(1.5);
//      glColor4dv(elementColour.GetRGBA());
//      DrawLine(m_pointList);
//
//      // Draw nodes.
//      if (m_pointList.size() > 0) {
//          glColor4dv(elementColour.GetRGBA());
//          DrawCircle(m_pointList[0], 5.0, 10, GL_POLYGON);
//          if (m_inserted) { DrawCircle(m_pointList[m_pointList.size() - 1], 5.0, 10, GL_POLYGON); }
//      }
//
//      DrawSwitches();
//      DrawPowerFlowPts();
//
//      // Push the current matrix on stack.
//      glPushMatrix();
//      // Rotate the matrix around the object position.
//      glTranslated(m_position.m_x, m_position.m_y, 0.0);
//      glRotated(m_angle, 0.0, 0.0, 1.0);
//      glTranslated(-m_position.m_x, -m_position.m_y, 0.0);
//
//      glColor4d(1.0, 1.0, 1.0, 1.0);
//      DrawCircle(m_rect.GetPosition() + wxPoint2DDouble(20.0, 20.0), 20, 20, GL_POLYGON);
//      DrawCircle(m_rect.GetPosition() + wxPoint2DDouble(50.0, 20.0), 20, 20, GL_POLYGON);
//
//      glColor4dv(elementColour.GetRGBA());
//      DrawCircle(m_rect.GetPosition() + wxPoint2DDouble(20.0, 20.0), 20, 20);
//      DrawCircle(m_rect.GetPosition() + wxPoint2DDouble(50.0, 20.0), 20, 20);
//
//      DrawPoint(m_rect.GetPosition(), 8.0 * scale);
//
//      glPopMatrix();
//  }
//}
 
void Transformer::DrawDC(wxPoint2DDouble translation, double scale, wxGraphicsContext* gc) const
{
    wxColour elementColour;
    if (m_online) {
        if (m_dynEvent)
            elementColour = m_dynamicEventColour;
        else
            elementColour = m_onlineElementColour;
    }
    else
        elementColour = m_offlineElementColour;
 
    if (m_inserted) {
        // Draw selection (layer 1).
        if (m_selected) {
            gc->SetPen(wxPen(wxColour(m_selectionColour), 2 + m_borderSize * 2.0));
            gc->SetBrush(*wxTRANSPARENT_BRUSH);
            gc->StrokeLines(m_pointList.size(), &m_pointList[0]);
 
            // Push the current matrix on stack.
            gc->PushState();
            // Rotate the matrix around the object position.
            gc->Translate(m_position.m_x, m_position.m_y);
            gc->Rotate(wxDegToRad(m_angle));
            gc->Translate(-m_position.m_x, -m_position.m_y);
 
            gc->SetPen(*wxTRANSPARENT_PEN);
            gc->SetBrush(wxBrush(m_selectionColour));
            DrawDCCircle(m_rect.GetPosition() + wxPoint2DDouble(20.0, 20.0), 20 + (m_borderSize + 1.5) / scale, 20, gc);
            DrawDCCircle(m_rect.GetPosition() + wxPoint2DDouble(50.0, 20.0), 20 + (m_borderSize + 1.5) / scale, 20, gc);
 
            gc->PopState();
 
            // Draw nodes selection.
            gc->SetPen(*wxTRANSPARENT_PEN);
            gc->SetBrush(wxBrush(m_selectionColour));
            if (m_pointList.size() > 0) {
                DrawDCCircle(m_pointList[0], 5.0 + m_borderSize / scale, 10, gc);
                if (m_inserted) { DrawDCCircle(m_pointList[m_pointList.size() - 1], 5.0 + m_borderSize / scale, 10, gc); }
            }
        }
 
        // Draw transformer (layer 2).
        // Transformer line
        gc->SetPen(wxPen(elementColour, 2));
        gc->SetBrush(*wxTRANSPARENT_BRUSH);
        gc->StrokeLines(m_pointList.size(), &m_pointList[0]);
 
        // Draw nodes.
        gc->SetPen(*wxTRANSPARENT_PEN);
        gc->SetBrush(wxBrush(elementColour));
        if (m_pointList.size() > 0) {
            DrawDCCircle(m_pointList[0], 5.0, 10, gc);
            if (m_inserted) { DrawDCCircle(m_pointList[m_pointList.size() - 1], 5.0, 10, gc); }
        }
 
        DrawDCSwitches(gc);
        DrawDCPowerFlowPts(gc);
 
        // Push the current matrix on stack.
        gc->PushState();
        // Rotate the matrix around the object position.
        gc->Translate(m_position.m_x, m_position.m_y);
        gc->Rotate(wxDegToRad(m_angle));
        gc->Translate(-m_position.m_x, -m_position.m_y);
 
        //glColor4d(1.0, 1.0, 1.0, 1.0);
        gc->SetPen(*wxTRANSPARENT_PEN);
        gc->SetBrush(*wxWHITE_BRUSH);
        DrawDCCircle(m_rect.GetPosition() + wxPoint2DDouble(20.0, 20.0), 20, 20, gc);
        DrawDCCircle(m_rect.GetPosition() + wxPoint2DDouble(50.0, 20.0), 20, 20, gc);
 
        gc->SetPen(wxPen(elementColour, 2));
        gc->SetBrush(*wxTRANSPARENT_BRUSH);
        DrawDCCircle(m_rect.GetPosition() + wxPoint2DDouble(20.0, 20.0), 20, 20, gc);
        DrawDCCircle(m_rect.GetPosition() + wxPoint2DDouble(50.0, 20.0), 20, 20, gc);
 
        // Point
        gc->SetPen(*wxTRANSPARENT_PEN);
        gc->SetBrush(wxBrush(elementColour));
        DrawDCCircle(m_rect.GetPosition(), 4, 10, gc);
 
        gc->PopState();
    }
}
 
void Transformer::DrawDC(wxPoint2DDouble translation, double scale, wxDC& dc) const
{
    wxColour elementColour;
    if (m_online) {
        if (m_dynEvent)
            elementColour = m_dynamicEventColour;
        else
            elementColour = m_onlineElementColour;
    }
    else
        elementColour = m_offlineElementColour;
 
    std::vector<wxPoint> pointList;
    for (auto& pt : m_pointList) { pointList.emplace_back(static_cast<int>(pt.m_x), static_cast<int>(pt.m_y)); }
 
    if (m_inserted) {
        // Draw selection (layer 1).
        if (m_selected) {
            dc.SetPen(wxPen(wxColour(m_selectionColour), 2 + m_borderSize * 2.0));
            dc.SetBrush(*wxTRANSPARENT_BRUSH);
            dc.DrawLines(pointList.size(), &pointList[0]);
 
            dc.SetPen(*wxTRANSPARENT_PEN);
            dc.SetBrush(wxBrush(m_selectionColour));
            //DrawDCCircle(m_rect.GetPosition() + wxPoint2DDouble(20.0, 20.0), 20 + (m_borderSize + 1.5) / scale, dc);
            //DrawDCCircle(m_rect.GetPosition() + wxPoint2DDouble(50.0, 20.0), 20 + (m_borderSize + 1.5) / scale, dc);
            DrawDCCircle(m_position + RotateLocal(wxPoint2DDouble(15.0, 0.0), m_angle), 20 + (m_borderSize + 1.5) / scale, dc);
            DrawDCCircle(m_position + RotateLocal(wxPoint2DDouble(-15.0, 0.0), m_angle), 20 + (m_borderSize + 1.5) / scale, dc);
 
            // Draw nodes selection.
            dc.SetPen(*wxTRANSPARENT_PEN);
            dc.SetBrush(wxBrush(m_selectionColour));
            if (pointList.size() > 0) {
                DrawDCCircle(pointList[0], 5.0 + m_borderSize / scale, dc);
                if (m_inserted) { DrawDCCircle(pointList[pointList.size() - 1], 5.0 + m_borderSize / scale, dc); }
            }
        }
 
        // Draw transformer (layer 2).
        // Transformer line
        dc.SetPen(wxPen(elementColour, 2));
        dc.SetBrush(*wxTRANSPARENT_BRUSH);
        dc.DrawLines(pointList.size(), &pointList[0]);
 
        // Draw nodes.
        dc.SetPen(*wxTRANSPARENT_PEN);
        dc.SetBrush(wxBrush(elementColour));
        if (pointList.size() > 0) {
            DrawDCCircle(pointList[0], 5.0, dc);
            if (m_inserted) { DrawDCCircle(pointList[pointList.size() - 1], 5.0, dc); }
        }
 
        DrawDCSwitches(dc);
        DrawDCPowerFlowPts(dc);
 
        dc.SetPen(*wxTRANSPARENT_PEN);
        dc.SetBrush(*wxWHITE_BRUSH);
        DrawDCCircle(m_position + RotateLocal(wxPoint2DDouble(15.0, 0.0), m_angle), 20, dc);
        DrawDCCircle(m_position + RotateLocal(wxPoint2DDouble(-15.0, 0.0), m_angle), 20, dc);
 
        dc.SetPen(wxPen(elementColour, 2));
        dc.SetBrush(*wxTRANSPARENT_BRUSH);
        DrawDCCircle(m_position + RotateLocal(wxPoint2DDouble(15.0, 0.0), m_angle), 20, dc);
        DrawDCCircle(m_position + RotateLocal(wxPoint2DDouble(-15.0, 0.0), m_angle), 20, dc);
 
        // Point
        dc.SetPen(*wxTRANSPARENT_PEN);
        dc.SetBrush(wxBrush(elementColour));
        DrawDCCircle(m_position + RotateLocal(wxPoint2DDouble(-35, -20), m_angle), 4, dc);
    }
}
 
bool Transformer::Intersects(wxRect2DDouble rect) const
{
    if (m_angle == 0.0 || m_angle == 180.0) return m_rect.Intersects(rect);
    return RotatedRectanglesIntersects(m_rect, rect, m_angle, 0.0);
}
 
void Transformer::Rotate(bool clockwise)
{
    double rotAngle = m_rotationAngle;
    if (!clockwise) rotAngle = -m_rotationAngle;
 
    m_angle += rotAngle;
    if (m_angle >= 360 || m_angle <= -360) m_angle = 0.0;
 
    // Rotate all the points, except the switches and buses points.
    for (int i = 2; i < (int)m_pointList.size() - 2; i++) {
        m_pointList[i] = RotateAtPosition(m_pointList[i], rotAngle);
    }
    UpdateSwitchesPosition();
    UpdatePowerFlowArrowsPosition();
}
 
void Transformer::Move(wxPoint2DDouble position)
{
    SetPosition(m_movePos + position - m_moveStartPt);
 
    // Move all the points, except the switches and buses points.
    for (int i = 2; i < (int)m_pointList.size() - 2; i++) { m_pointList[i] = m_movePts[i] + position - m_moveStartPt; }
 
    if (!m_parentList[0]) { m_pointList[0] = m_movePts[0] + position - m_moveStartPt; }
    if (!m_parentList[1]) {
        m_pointList[m_pointList.size() - 1] = m_movePts[m_pointList.size() - 1] + position - m_moveStartPt;
    }
 
    UpdateSwitchesPosition();
    UpdatePowerFlowArrowsPosition();
}
 
void Transformer::MoveNode(Element* parent, wxPoint2DDouble position)
{
    if (parent) {
        // First bus.
        if (parent == m_parentList[0]) {
            m_pointList[0] = m_movePts[0] + position - m_moveStartPt;
        }
        // Second bus.
        else if (parent == m_parentList[1]) {
            m_pointList[m_pointList.size() - 1] = m_movePts[m_pointList.size() - 1] + position - m_moveStartPt;
        }
    }
    else {
        if (m_activeNodeID == 1) {
            m_pointList[0] = m_movePts[0] + position - m_moveStartPt;
            if (m_parentList[0]) {
                m_parentList[0]->RemoveChild(this);
                m_parentList[0] = nullptr;
                m_online = false;
            }
        }
        else if (m_activeNodeID == 2) {
            m_pointList[m_pointList.size() - 1] = m_movePts[m_pointList.size() - 1] + position - m_moveStartPt;
            if (m_parentList[1]) {
                m_parentList[1]->RemoveChild(this);
                m_parentList[1] = nullptr;
                m_online = false;
            }
        }
    }
 
    // Recalculate switches positions
    UpdateSwitchesPosition();
    UpdatePowerFlowArrowsPosition();
}
 
void Transformer::StartMove(wxPoint2DDouble position)
{
    m_moveStartPt = position;
    m_movePts = m_pointList;
    m_movePos = m_position;
}
 
bool Transformer::GetContextMenu(wxMenu& menu)
{
    menu.Append(ID_EDIT_ELEMENT, _("Edit tranformer"));
 
    wxString busName[2] = { "?", "?" };
    if (m_parentList.size() == 2) {
        int i = 0;
        for (Element* element : m_parentList) {
            if (element) {
                Bus* bus = static_cast<Bus*>(element);
                busName[i] = bus->GetElectricalData().name;
            }
            i++;
        }
    }
 
    wxMenu* textMenu = new wxMenu();
 
    textMenu->Append(ID_TXT_NAME, _("Name"));
    textMenu->Append(ID_TXT_BRANCH_ACTIVE_POWER_1_2, _("Active power (") + busName[0] + _(" to ") + busName[1] + wxT(")"));
    textMenu->Append(ID_TXT_BRANCH_ACTIVE_POWER_2_1, _("Active power (") + busName[1] + _(" to ") + busName[0] + wxT(")"));
    textMenu->Append(ID_TXT_BRANCH_REACTIVE_POWER_1_2, _("Reactive power (") + busName[0] + _(" to ") + busName[1] + wxT(")"));
    textMenu->Append(ID_TXT_BRANCH_REACTIVE_POWER_2_1, _("Reactive power (") + busName[1] + _(" to ") + busName[0] + wxT(")"));
    textMenu->Append(ID_TXT_BRANCH_LOSSES, _("Losses"));
    textMenu->Append(ID_TXT_BRANCH_CURRENT_1_2, _("Current (") + busName[0] + _(" to ") + busName[1] + wxT(")"));
    textMenu->Append(ID_TXT_BRANCH_CURRENT_2_1, _("Current (") + busName[1] + _(" to ") + busName[0] + wxT(")"));
    textMenu->Append(ID_TXT_BRANCH_FAULT_CURRENT_1_2, _("Fault current (") + busName[0] + _(" to ") + busName[1] + wxT(")"));
    textMenu->Append(ID_TXT_BRANCH_FAULT_CURRENT_2_1, _("Fault current (") + busName[1] + _(" to ") + busName[0] + wxT(")"));
    textMenu->SetClientData(menu.GetClientData());
    menu.AppendSubMenu(textMenu, _("Add text"));
 
    GeneralMenuItens(menu);
    return true;
}
 
bool Transformer::ShowForm(wxWindow* parent, Element* element, wxWindow* workspace)
{
    TransformerForm transfForm(parent, this);
    transfForm.CenterOnParent();
    if (transfForm.ShowModal() == wxID_OK) {
        return true;
    }
    return false;
}
 
void Transformer::SetNominalVoltage(std::vector<double> nominalVoltage, std::vector<ElectricalUnit> nominalVoltageUnit)
{
    if (nominalVoltage.size() == 1) {
        m_electricalData.primaryNominalVoltage = nominalVoltage[0];
        m_electricalData.primaryNominalVoltageUnit = nominalVoltageUnit[0];
    }
    else if (nominalVoltage.size() == 2) {
        m_electricalData.primaryNominalVoltage = nominalVoltage[0];
        m_electricalData.primaryNominalVoltageUnit = nominalVoltageUnit[0];
        m_electricalData.secondaryNominalVoltage = nominalVoltage[1];
        m_electricalData.secondaryNominalVoltageUnit = nominalVoltageUnit[1];
    }
}
 
void Transformer::UpdatePowerFlowArrowsPosition()
{
    std::vector<wxPoint2DDouble> edges;
    switch (m_pfDirection) {
    case PowerFlowDirection::PF_NONE: {
        m_powerFlowArrow.clear();
    } break;
    case PowerFlowDirection::PF_BUS1_TO_BUS2: {
        for (int i = 1; i < (int)m_pointList.size() - 1; i++) { edges.push_back(m_pointList[i]); }
    } break;
    case PowerFlowDirection::PF_BUS2_TO_BUS1: {
        for (int i = (int)m_pointList.size() - 2; i > 0; i--) { edges.push_back(m_pointList[i]); }
    } break;
    default:
        break;
    }
    CalculatePowerFlowPts(edges);
}
 
void Transformer::RotateNode(Element* parent, bool clockwise)
{
    double rotAngle = m_rotationAngle;
    if (!clockwise) rotAngle = -m_rotationAngle;
 
    if (parent == m_parentList[0]) {
        m_pointList[0] = parent->RotateAtPosition(m_pointList[0], rotAngle);
    }
    else if (parent == m_parentList[1]) {
        m_pointList[m_pointList.size() - 1] = parent->RotateAtPosition(m_pointList[m_pointList.size() - 1], rotAngle);
    }
    UpdateSwitchesPosition();
    UpdatePowerFlowArrowsPosition();
}
 
bool Transformer::SetNodeParent(Element* parent)
{
    if (m_activeNodeID == 1 && parent == m_parentList[0]) return false;
    if (m_activeNodeID == 2 && parent == m_parentList[1]) return false;
 
    if (parent && m_activeNodeID != 0) {
        wxRect2DDouble nodeRect(0, 0, 0, 0);
        if (m_activeNodeID == 1) {
            nodeRect = wxRect2DDouble(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_activeNodeID == 2) {
            nodeRect = wxRect2DDouble(m_pointList[m_pointList.size() - 1].m_x - 5.0 - m_borderSize,
                m_pointList[m_pointList.size() - 1].m_y - 5.0 - m_borderSize,
                10 + 2.0 * m_borderSize, 10 + 2.0 * m_borderSize);
        }
 
        if (parent->Intersects(nodeRect)) {
            if (m_activeNodeID == 1) {
                // Check if the user is trying to connect the same bus.
                if (m_parentList[1] == parent) {
                    m_activeNodeID = 0;
                    return false;
                }
 
                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();
                UpdatePowerFlowArrowsPosition();
                return true;
            }
            if (m_activeNodeID == 2) {
                if (m_parentList[0] == parent) {
                    m_activeNodeID = 0;
                    return false;
                }
 
                m_parentList[1] = parent;
 
                wxPoint2DDouble parentPt =
                    parent->RotateAtPosition(m_pointList[m_pointList.size() - 1], -parent->GetAngle());
                parentPt.m_y = parent->GetPosition().m_y;
                parentPt = parent->RotateAtPosition(parentPt, parent->GetAngle());
                m_pointList[m_pointList.size() - 1] = parentPt;
 
                UpdateSwitchesPosition();
                UpdatePowerFlowArrowsPosition();
                return true;
            }
        }
        else {
            if (m_activeNodeID == 1) m_parentList[0] = nullptr;
            if (m_activeNodeID == 2) m_parentList[1] = nullptr;
        }
    }
    return false;
}
 
void Transformer::SetPowerFlowDirection(PowerFlowDirection pfDirection)
{
    m_pfDirection = pfDirection;
    UpdatePowerFlowArrowsPosition();
}
 
Element* Transformer::GetCopy()
{
    Transformer* copy = new Transformer();
    *copy = *this;
    return copy;
}
 
wxString Transformer::GetTipText() const
{
    wxString tipText = m_electricalData.name;
    wxString primVoltage = StringFromDouble(m_electricalData.primaryNominalVoltage);
    switch (m_electricalData.primaryNominalVoltageUnit) {
    case ElectricalUnit::UNIT_V: {
        primVoltage += _(" V");
    } break;
    case ElectricalUnit::UNIT_kV: {
        primVoltage += _(" kV");
    } break;
    default:
        break;
    }
    wxString secVoltage = StringFromDouble(m_electricalData.secondaryNominalVoltage);
    switch (m_electricalData.secondaryNominalVoltageUnit) {
    case ElectricalUnit::UNIT_V: {
        secVoltage += _(" V");
    } break;
    case ElectricalUnit::UNIT_kV: {
        secVoltage += _(" kV");
    } break;
    default:
        break;
    }
 
    tipText += "\n" + primVoltage + " / " + secVoltage;
 
    if (m_online) {
        tipText += "\n";
        int busNumber[2];
        busNumber[0] = static_cast<Bus*>(m_parentList[0])->GetElectricalData().number + 1;
        busNumber[1] = static_cast<Bus*>(m_parentList[1])->GetElectricalData().number + 1;
 
        tipText += _("\nP") + wxString::Format("(%d-%d) = ", busNumber[0], busNumber[1]) +
            wxString::FromDouble(m_electricalData.powerFlow[0].real(), 5) + _(" p.u.");
        tipText += _("\nQ") + wxString::Format("(%d-%d) = ", busNumber[0], busNumber[1]) +
            wxString::FromDouble(m_electricalData.powerFlow[0].imag(), 5) + _(" p.u.");
        tipText += _("\nP") + wxString::Format("(%d-%d) = ", busNumber[1], busNumber[0]) +
            wxString::FromDouble(m_electricalData.powerFlow[1].real(), 5) + _(" p.u.");
        tipText += _("\nQ") + wxString::Format("(%d-%d) = ", busNumber[1], busNumber[0]) +
            wxString::FromDouble(m_electricalData.powerFlow[1].imag(), 5) + _(" p.u.");
 
        if (!m_electricalData.harmonicOrder.empty()) {
            tipText += _("\n\nHarmonic currents:");
            int i = 0;
            for (auto& hCurrent1 : m_electricalData.harmonicCurrent[0]) {
                auto& hCurrent2 = m_electricalData.harmonicCurrent[1][i];
                wxString i1, i2;
                i1.Printf(_("\nIh(%d)(%d-%d) = %.5e%s%.2f%s p.u."), m_electricalData.harmonicOrder[i], busNumber[0], busNumber[1], std::abs(hCurrent1), wxString(L'\u2220'), wxRadToDeg(std::arg(hCurrent1)), wxString(L'\u00B0'));
                i2.Printf(_("\nIh(%d)(%d-%d) = %.5e%s%.2f%s p.u."), m_electricalData.harmonicOrder[i], busNumber[1], busNumber[0], std::abs(hCurrent2), wxString(L'\u2220'), wxRadToDeg(std::arg(hCurrent2)), wxString(L'\u00B0'));
 
                tipText += i1 + i2;
                i++;
            }
        }
    }
 
    return tipText;
}
 
TransformerElectricalData Transformer::GetPUElectricalData(double systemBasePower)
{
    TransformerElectricalData data;
 
    data.nominalPower = m_electricalData.nominalPower;
    data.nominalPowerUnit = m_electricalData.nominalPowerUnit;
 
    data.primaryNominalVoltage = m_electricalData.primaryNominalVoltage;
    data.primaryNominalVoltageUnit =
        m_electricalData.primaryNominalVoltageUnit;
 
    data.secondaryNominalVoltage =
        m_electricalData.secondaryNominalVoltage;
    data.secondaryNominalVoltageUnit =
        m_electricalData.secondaryNominalVoltageUnit;
 
    data.useTransformerPower =
        m_electricalData.useTransformerPower;
 
    data.baseVoltage = m_electricalData.baseVoltage;
 
    data.resistance = m_electricalData.resistance;
    data.resistanceUnit = m_electricalData.resistanceUnit;
 
    data.indReactance = m_electricalData.indReactance;
    data.indReactanceUnit = m_electricalData.indReactanceUnit;
 
    data.zeroResistance = m_electricalData.zeroResistance;
    data.zeroIndReactance = m_electricalData.zeroIndReactance;
 
    data.primaryGrndResistance =
        m_electricalData.primaryGrndResistance;
    data.primaryGrndReactance =
        m_electricalData.primaryGrndReactance;
 
    data.secondaryGrndResistance =
        m_electricalData.secondaryGrndResistance;
    data.secondaryGrndReactance =
        m_electricalData.secondaryGrndReactance;
 
    data.powerFlow[0] = m_electricalData.powerFlow[0];
    data.powerFlow[1] = m_electricalData.powerFlow[1];
 
    double transformerBasePower = GetValueFromUnit(data.nominalPower, data.nominalPowerUnit);
    double baseVoltage = 0.0;
    if (data.baseVoltage == 0) {
        baseVoltage = GetValueFromUnit(data.primaryNominalVoltage, data.primaryNominalVoltageUnit);
    }
    else {
        baseVoltage = GetValueFromUnit(data.secondaryNominalVoltage, data.secondaryNominalVoltageUnit);
    }
    double systemBaseImpedance = (baseVoltage * baseVoltage) / systemBasePower;
    double transformerBaseImpedance = (baseVoltage * baseVoltage) / transformerBasePower;
 
    // Resistance
    double r = data.resistance;
    if (data.resistanceUnit == ElectricalUnit::UNIT_PU) {
        if (data.useTransformerPower) data.resistance = (r * transformerBaseImpedance) / systemBaseImpedance;
    }
    else {
        data.resistance = r / systemBaseImpedance;
    }
    data.resistanceUnit = ElectricalUnit::UNIT_PU;
 
    // Indutive reactance
    double x = data.indReactance;
    if (data.indReactanceUnit == ElectricalUnit::UNIT_PU) {
        if (data.useTransformerPower) data.indReactance = (x * transformerBaseImpedance) / systemBaseImpedance;
    }
    else {
        data.indReactance = x / systemBaseImpedance;
    }
    data.indReactanceUnit = ElectricalUnit::UNIT_PU;
 
    // Fault
 
    // Zero seq. resistance
    double r0 = data.zeroResistance;
    if (data.useTransformerPower) data.zeroResistance = (r0 * transformerBaseImpedance) / systemBaseImpedance;
 
    // Zero seq. ind. reactance
    double x0 = data.zeroIndReactance;
    if (data.useTransformerPower) data.zeroIndReactance = (x0 * transformerBaseImpedance) / systemBaseImpedance;
 
    // Primary ground resistance
    double rgp = data.primaryGrndResistance;
    if (data.useTransformerPower) data.primaryGrndResistance = (rgp * transformerBaseImpedance) / systemBaseImpedance;
 
    // Primary ground ind reactance
    double xgp = data.primaryGrndReactance;
    if (data.useTransformerPower) data.primaryGrndReactance = (xgp * transformerBaseImpedance) / systemBaseImpedance;
 
    // Secondary ground resistance
    double rgs = data.secondaryGrndResistance;
    if (data.useTransformerPower) data.secondaryGrndResistance = (rgs * transformerBaseImpedance) / systemBaseImpedance;
 
    // Secondary ground ind reactance
    double xgs = data.secondaryGrndReactance;
    if (data.useTransformerPower) data.secondaryGrndReactance = (xgs * transformerBaseImpedance) / systemBaseImpedance;
 
    if (!m_online) {
        data.powerFlow[0] = std::complex<double>(0, 0);
        data.powerFlow[1] = std::complex<double>(0, 0);
        data.faultCurrent[0][0] = std::complex<double>(0, 0);
        data.faultCurrent[0][1] = std::complex<double>(0, 0);
        data.faultCurrent[0][2] = std::complex<double>(0, 0);
        data.faultCurrent[1][0] = std::complex<double>(0, 0);
        data.faultCurrent[1][1] = std::complex<double>(0, 0);
        data.faultCurrent[1][2] = std::complex<double>(0, 0);
    }
 
    return data;
}
 
rapidxml::xml_node<>* Transformer::SaveElement(rapidxml::xml_document<>& doc, rapidxml::xml_node<>* elementListNode)
{
    auto elementNode = XMLParser::AppendNode(doc, elementListNode, "Transfomer");
    XMLParser::SetNodeAttribute(doc, elementNode, "ID", m_elementID);
    auto cadProp = XMLParser::AppendNode(doc, elementNode, "CADProperties");
    auto position = XMLParser::AppendNode(doc, cadProp, "Position");
    auto posX = XMLParser::AppendNode(doc, position, "X");
    XMLParser::SetNodeValue(doc, posX, m_position.m_x);
    auto posY = XMLParser::AppendNode(doc, position, "Y");
    XMLParser::SetNodeValue(doc, posY, m_position.m_y);
    auto size = XMLParser::AppendNode(doc, cadProp, "Size");
    auto width = XMLParser::AppendNode(doc, size, "Width");
    XMLParser::SetNodeValue(doc, width, m_width);
    auto height = XMLParser::AppendNode(doc, size, "Height");
    XMLParser::SetNodeValue(doc, height, m_height);
    auto angle = XMLParser::AppendNode(doc, cadProp, "Angle");
    XMLParser::SetNodeValue(doc, angle, m_angle);
    auto nodeList = XMLParser::AppendNode(doc, cadProp, "NodeList");
    auto nodePos1 = XMLParser::AppendNode(doc, nodeList, "Node");
    XMLParser::SetNodeAttribute(doc, nodePos1, "ID", 0);
    auto nodePosX1 = XMLParser::AppendNode(doc, nodePos1, "X");
    XMLParser::SetNodeValue(doc, nodePosX1, m_pointList[0].m_x);
    auto nodePosY1 = XMLParser::AppendNode(doc, nodePos1, "Y");
    XMLParser::SetNodeValue(doc, nodePosY1, m_pointList[0].m_y);
    auto nodePos2 = XMLParser::AppendNode(doc, nodeList, "Node");
    XMLParser::SetNodeAttribute(doc, nodePos2, "ID", 1);
    auto nodePosX2 = XMLParser::AppendNode(doc, nodePos2, "X");
    XMLParser::SetNodeValue(doc, nodePosX2, m_pointList[m_pointList.size() - 1].m_x);
    auto nodePosY2 = XMLParser::AppendNode(doc, nodePos2, "Y");
    XMLParser::SetNodeValue(doc, nodePosY2, m_pointList[m_pointList.size() - 1].m_y);
 
    auto parentIDList = XMLParser::AppendNode(doc, cadProp, "ParentIDList");
    for (unsigned int i = 0; i < m_parentList.size(); i++) {
        Element* parent = m_parentList[i];
        if (parent) {
            auto parentID = XMLParser::AppendNode(doc, parentIDList, "ParentID");
            XMLParser::SetNodeAttribute(doc, parentID, "ID", static_cast<int>(i));
            XMLParser::SetNodeValue(doc, parentID, parent->GetID());
        }
    }
 
    auto electricalProp = XMLParser::AppendNode(doc, elementNode, "ElectricalProperties");
    auto isOnline = XMLParser::AppendNode(doc, electricalProp, "IsOnline");
    XMLParser::SetNodeValue(doc, isOnline, m_online);
    auto name = XMLParser::AppendNode(doc, electricalProp, "Name");
    XMLParser::SetNodeValue(doc, name, m_electricalData.name);
    auto primaryNominalVoltage = XMLParser::AppendNode(doc, electricalProp, "PrimaryNominalVoltage");
    XMLParser::SetNodeValue(doc, primaryNominalVoltage, m_electricalData.primaryNominalVoltage);
    XMLParser::SetNodeAttribute(doc, primaryNominalVoltage, "UnitID", static_cast<int>(m_electricalData.primaryNominalVoltageUnit));
    auto secondaryNominalVoltage = XMLParser::AppendNode(doc, electricalProp, "SecondaryNominalVoltage");
    XMLParser::SetNodeValue(doc, secondaryNominalVoltage, m_electricalData.secondaryNominalVoltage);
    XMLParser::SetNodeAttribute(doc, secondaryNominalVoltage, "UnitID", static_cast<int>(m_electricalData.secondaryNominalVoltageUnit));
    auto nominalPower = XMLParser::AppendNode(doc, electricalProp, "NominalPower");
    XMLParser::SetNodeValue(doc, nominalPower, m_electricalData.nominalPower);
    XMLParser::SetNodeAttribute(doc, nominalPower, "UnitID", static_cast<int>(m_electricalData.nominalPowerUnit));
    auto resistance = XMLParser::AppendNode(doc, electricalProp, "Resistance");
    XMLParser::SetNodeValue(doc, resistance, m_electricalData.resistance);
    XMLParser::SetNodeAttribute(doc, resistance, "UnitID", static_cast<int>(m_electricalData.resistanceUnit));
    auto indReactance = XMLParser::AppendNode(doc, electricalProp, "IndReactance");
    XMLParser::SetNodeValue(doc, indReactance, m_electricalData.indReactance);
    XMLParser::SetNodeAttribute(doc, indReactance, "UnitID", static_cast<int>(m_electricalData.indReactanceUnit));
    auto connection = XMLParser::AppendNode(doc, electricalProp, "Connection");
    XMLParser::SetNodeValue(doc, connection, m_electricalData.connection);
    auto turnsRatio = XMLParser::AppendNode(doc, electricalProp, "TurnsRatio");
    XMLParser::SetNodeValue(doc, turnsRatio, m_electricalData.turnsRatio);
    auto phaseShift = XMLParser::AppendNode(doc, electricalProp, "PhaseShift");
    XMLParser::SetNodeValue(doc, phaseShift, m_electricalData.phaseShift);
    auto useTransformerPower = XMLParser::AppendNode(doc, electricalProp, "UseTransfomerPower");
    XMLParser::SetNodeValue(doc, useTransformerPower, m_electricalData.useTransformerPower);
 
    auto fault = XMLParser::AppendNode(doc, electricalProp, "Fault");
    auto zeroResistance = XMLParser::AppendNode(doc, fault, "ZeroResistance");
    XMLParser::SetNodeValue(doc, zeroResistance, m_electricalData.zeroResistance);
    auto zeroIndReactance = XMLParser::AppendNode(doc, fault, "ZeroIndReactance");
    XMLParser::SetNodeValue(doc, zeroIndReactance, m_electricalData.zeroIndReactance);
    auto primaryGrndResistance = XMLParser::AppendNode(doc, fault, "PrimaryGrndResistance");
    XMLParser::SetNodeValue(doc, primaryGrndResistance, m_electricalData.primaryGrndResistance);
    auto primaryGrndReactance = XMLParser::AppendNode(doc, fault, "PrimaryGrndReactance");
    XMLParser::SetNodeValue(doc, primaryGrndReactance, m_electricalData.primaryGrndReactance);
    auto secondaryGrndResistance = XMLParser::AppendNode(doc, fault, "SecondaryGrndResistance");
    XMLParser::SetNodeValue(doc, secondaryGrndResistance, m_electricalData.secondaryGrndResistance);
    auto secondaryGrndReactance = XMLParser::AppendNode(doc, fault, "SecondaryGrndReactance");
    XMLParser::SetNodeValue(doc, secondaryGrndReactance, m_electricalData.secondaryGrndReactance);
 
    SaveSwitchingData(doc, electricalProp);
 
    return elementNode;
}
 
bool Transformer::OpenElement(rapidxml::xml_node<>* elementNode, std::vector<Element*> parentList)
{
    auto cadPropNode = elementNode->first_node("CADProperties");
    if (!cadPropNode) return false;
 
    auto position = cadPropNode->first_node("Position");
    double posX = XMLParser::GetNodeValueDouble(position, "X");
    double posY = XMLParser::GetNodeValueDouble(position, "Y");
    auto size = cadPropNode->first_node("Size");
    m_width = XMLParser::GetNodeValueDouble(size, "Width");
    m_height = XMLParser::GetNodeValueDouble(size, "Height");
    double angle = XMLParser::GetNodeValueDouble(cadPropNode, "Angle");
 
    // Get nodes points
    std::vector<wxPoint2DDouble> ptsList;
    auto nodePosList = cadPropNode->first_node("NodeList");
    if (!nodePosList) return false;
    auto nodePos = nodePosList->first_node("Node");
    while (nodePos) {
        double nodePosX = XMLParser::GetNodeValueDouble(nodePos, "X");
        double nodePosY = XMLParser::GetNodeValueDouble(nodePos, "Y");
        ptsList.push_back(wxPoint2DDouble(nodePosX, nodePosY));
        nodePos = nodePos->next_sibling("Node");
    }
 
    // Get parents IDs
    auto parentIDList = cadPropNode->first_node("ParentIDList");
    if (!parentIDList) return false;
    auto parentNode = parentIDList->first_node("ParentID");
    long parentID[2] = { -1, -1 };
    while (parentNode) {
        long index = 0;
        wxString(parentNode->first_attribute("ID")->value()).ToLong(&index);
        wxString(parentNode->value()).ToCLong(&parentID[index]);
        parentNode = parentNode->next_sibling("ParentID");
    }
 
    std::vector<wxPoint2DDouble> nodePtsList;            // List of node points
    nodePtsList.push_back(ptsList[0]);                   // First point on the list
    nodePtsList.push_back(ptsList[ptsList.size() - 1]);  // Last point on the list
 
    // List of dummy buses to set not connected nodes properly
    std::vector<Bus*> dummyBusList;
    // Set parents (if have)
    for (unsigned int i = 0; i < 2; ++i) {
        if (parentID[i] == -1)  // No parent connected
        {
            Bus* dummyBus = new Bus(nodePtsList[i]);
            dummyBusList.push_back(dummyBus);
            AddParent(dummyBus, nodePtsList[i]);
        }
        else {  // Parent connected (necessarily a bus, get from bus list)
            AddParent(parentList[parentID[i]], nodePtsList[i]);
        }
    }
 
    StartMove(m_position);
    Move(wxPoint2DDouble(posX, posY));
 
    // Remove dummy buses
    for (auto it = dummyBusList.begin(), itEnd = dummyBusList.end(); it != itEnd; ++it) {
        RemoveParent(*it);
        delete* it;
    }
    dummyBusList.clear();
 
    // Set rotation properly.
    int numRot = angle / GetRotationAngle();
    bool clockwise = true;
    if (numRot < 0) {
        numRot = std::abs(numRot);
        clockwise = false;
    }
    for (int i = 0; i < numRot; i++) Rotate(clockwise);
 
    auto electricalProp = elementNode->first_node("ElectricalProperties");
    if (!electricalProp) return false;
 
    SetOnline(XMLParser::GetNodeValueInt(electricalProp, "IsOnline"));
    m_electricalData.name = electricalProp->first_node("Name")->value();
    m_electricalData.primaryNominalVoltage = XMLParser::GetNodeValueDouble(electricalProp, "PrimaryNominalVoltage");
    m_electricalData.primaryNominalVoltageUnit =
        static_cast<ElectricalUnit>(XMLParser::GetAttributeValueInt(electricalProp, "PrimaryNominalVoltage", "UnitID"));
    m_electricalData.secondaryNominalVoltage = XMLParser::GetNodeValueDouble(electricalProp, "SecondaryNominalVoltage");
    m_electricalData.secondaryNominalVoltageUnit = static_cast<ElectricalUnit>(
        XMLParser::GetAttributeValueInt(electricalProp, "SecondaryNominalVoltage", "UnitID"));
    m_electricalData.nominalPower = XMLParser::GetNodeValueDouble(electricalProp, "NominalPower");
    m_electricalData.nominalPowerUnit =
        static_cast<ElectricalUnit>(XMLParser::GetAttributeValueInt(electricalProp, "NominalPower", "UnitID"));
    m_electricalData.resistance = XMLParser::GetNodeValueDouble(electricalProp, "Resistance");
    m_electricalData.resistanceUnit =
        static_cast<ElectricalUnit>(XMLParser::GetAttributeValueInt(electricalProp, "Resistance", "UnitID"));
    m_electricalData.indReactance = XMLParser::GetNodeValueDouble(electricalProp, "IndReactance");
    m_electricalData.indReactanceUnit =
        static_cast<ElectricalUnit>(XMLParser::GetAttributeValueInt(electricalProp, "IndReactance", "UnitID"));
    m_electricalData.connection = (TransformerConnection)XMLParser::GetNodeValueInt(electricalProp, "Connection");
    m_electricalData.turnsRatio = XMLParser::GetNodeValueDouble(electricalProp, "TurnsRatio");
    m_electricalData.phaseShift = XMLParser::GetNodeValueDouble(electricalProp, "PhaseShift");
    m_electricalData.useTransformerPower = XMLParser::GetNodeValueInt(electricalProp, "UseTransfomerPower");
 
    auto fault = electricalProp->first_node("Fault");
    m_electricalData.zeroResistance = XMLParser::GetNodeValueDouble(fault, "ZeroResistance");
    m_electricalData.zeroIndReactance = XMLParser::GetNodeValueDouble(fault, "ZeroIndReactance");
    m_electricalData.primaryGrndResistance = XMLParser::GetNodeValueDouble(fault, "PrimaryGrndResistance");
    m_electricalData.primaryGrndReactance = XMLParser::GetNodeValueDouble(fault, "PrimaryGrndReactance");
    m_electricalData.secondaryGrndResistance = XMLParser::GetNodeValueDouble(fault, "SecondaryGrndResistance");
    m_electricalData.secondaryGrndReactance = XMLParser::GetNodeValueDouble(fault, "SecondaryGrndReactance");
 
    if (!OpenSwitchingData(electricalProp)) return false;
    if (m_swData.swTime.size() != 0) SetDynamicEvent(true);
 
    return true;
}
 
void Transformer::SetBestPositionAndRotation()
{
    wxPoint2DDouble p1 = m_pointList[0];
    wxPoint2DDouble p2 = m_pointList[m_pointList.size() - 1];
    wxPoint2DDouble mid = (p1 + p2) / 2.0;
    StartMove(m_position);
    Move(mid);
    double bestAngle = wxRadToDeg(std::atan2(p2.m_y - p1.m_y, p2.m_x - p1.m_x));
    bool clockwise = bestAngle > 0 ? true : false;
    while (std::abs(m_angle) < std::abs(bestAngle)) { Rotate(clockwise); }
}