A generic math expression block that can perform math and conditional operations with the inputs. More...

#include <MathExpression.h>

Inheritance diagram for MathExpression:

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Collaboration diagram for MathExpression:

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Public Member Functions
	MathExpression (int id)

virtual void	DrawDC (GUIColour guiColour, wxPoint2DDouble translation, double scale, wxGraphicsContext gc) const
	Draw the element using GDI+.

virtual bool	Contains (wxPoint2DDouble position) const
	Checks if the element contains a position.

virtual bool	Intersects (wxRect2DDouble rect) const
	Check if the element's rect intersects other rect.

virtual bool	ShowForm (wxWindow parent, Element element, wxWindow *workspace=nullptr)
	Show element data form.

virtual void	Rotate (bool clockwise=true)
	Rotate the element.

virtual void	SetFont (wxFont &font)

virtual bool	Solve (double *input, double timeStep)

virtual bool	Initialize ()

virtual wxString	GetMathExpression ()

virtual void	SetMathExpression (wxString mathExpression)

virtual std::vector< wxString >	GetVariables ()

virtual void	SetVariables (std::vector< wxString > variablesVector)

virtual MathExprParser	GetParser ()

virtual void	UpdatePoints ()

void	AddInNode ()

void	RemoveInNode ()

virtual bool	UpdateText ()
	Update the OpenGL text in the element (if present).

virtual rapidxml::xml_node *	SaveElement (rapidxml::xml_document<> &doc, rapidxml::xml_node<> *elementListNode)

virtual bool	OpenElement (rapidxml::xml_node<> *elementNode)

virtual Element *	GetCopy ()
	Get a the element copy.

Public Member Functions inherited from ControlElement
	ControlElement (int id)

virtual void	StartMove (wxPoint2DDouble position)
	Update the element attributes related to the movement.

virtual void	Move (wxPoint2DDouble position)
	Move the element other position.

void	SetNodeList (std::vector< Node * > nodeList)

std::vector< Node * >	GetNodeList () const

virtual void	DrawDCNodes (wxGraphicsContext *gc) const

virtual void	ReplaceNode (Node oldNode, Node newNode)

virtual bool	IsSolved () const

virtual void	SetSolved (bool solved=true)

virtual double	GetOutput () const

virtual void	SetOutput (double output)

Public Member Functions inherited from Element
	Element ()
	Constructor.

virtual	~Element ()
	Destructor.

void	SetDragging (bool dragging=true)
	Set if the element are being dragged.

void	SetHeight (double height)
	Set element height.

void	SetPosition (const wxPoint2DDouble position)
	Set the element position and update the rectangle.

void	SetSelected (bool selected=true)
	Set element selection.

void	SetWidth (double width)
	Set element width.

void	SetAngle (double angle)
	Set element angle.

void	ShowPickbox (bool showPickbox=true)
	Set if the pickbox is shown.

void	SetBorderSize (double borderSize)
	Set the size of the border (shown in selected elements).

bool	SetOnline (bool online=true)
	Set if the element is online or offline.

virtual void	SetPointList (std::vector< wxPoint2DDouble > pointList)
	Set the list of points that connect the element to the bus.

ElementType	GetElementType ()

wxRect2DDouble	GetRect () const
	Get the element rectangle.

wxPoint2DDouble	GetPosition () const
	Get the element position.

bool	IsDragging () const
	Checks if the element is being dragged.

double	GetHeight () const
	Get the element height.

bool	IsSelected () const
	Checks if the element is selected.

double	GetWidth () const
	Get the element width.

double	GetAngle () const
	Get the element angle.

double	GetRotationAngle () const
	Get the angle of rotation.

bool	IsPickboxShown () const
	Checks if the pickbox is shown.

bool	IsOnline () const
	Checks if the element is online or offline.

virtual std::vector< wxPoint2DDouble >	GetPointList () const
	Get the list of points that connect the element to bus.

virtual bool	AddParent (Element *parent, wxPoint2DDouble position)
	Add a parent to the element. This method must be used on power elements that connect to a bus, so the parent must be a bus. The element basic points are calculated in this method, so apply this when the element is being inserted.

virtual void	AddParent (Element *parent)
	Add a parent to the element.

virtual void	SetID (int id)
	Set the element ID.

virtual int	GetID () const
	Get the element ID.

virtual void	AddChild (Element *child)
	Add a child to the child list.

virtual void	RemoveChild (Element *child)
	Remove a child from the list.

virtual void	ReplaceChild (Element oldChild, Element newChild)
	Replace a child from the list.

virtual wxString	GetTipText () const
	Get the tip text.

virtual void	DrawDC (GUIColour *guiColour, wxPoint2DDouble translation, double scale, wxDC &dc) const
	Draw the element using wxDC.

virtual bool	GetContextMenu (wxMenu &menu)
	Get the element contex menu.

virtual void	AddPoint (wxPoint2DDouble point)
	Add point to the list of points that connect the element to the bus.

virtual void	MoveNode (Element *parent, wxPoint2DDouble position)
	Move a node. StartMove(wxPoint2DDouble position) before start moving.

virtual bool	NodeContains (wxPoint2DDouble position)
	Check if a node contains a point. If contains, set the attributes related to node movement.

virtual void	UpdateNodes ()
	Update the nodes according to the parents. If a parent is removed, use this method.

void	SetParent (Element *parent, int num)

void	SetChild (Element *child, int num)

virtual bool	SetNodeParent (Element *parent)
	Set a perent to the node. If all conditions are met, a new parent are added to the element and the points related to the nodes will be calculated.

virtual void	RemoveParent (Element *parent)
	Remove a parent.

virtual void	ReplaceParent (Element oldParent, Element newParent)
	Replace a parent.

virtual void	RotateNode (Element *parent, bool clockwise=true)
	Rotate a node.

virtual bool	PickboxContains (wxPoint2DDouble position)
	Check if a pickbox contains a point. If contains the attributes related to pickbox movement will be calculated.

virtual void	MovePickbox (wxPoint2DDouble position)
	Move the pickbox.

virtual wxCursor	GetBestPickboxCursor () const
	Get the best cursor to shown to the user when the mouse is above a pickbox.

virtual void	ResetPickboxes ()
	Remove the pickboxes.

virtual void	ResetNodes ()
	Remove the active nodes.

virtual wxPoint2DDouble	WorldToScreen (wxPoint2DDouble translation, double scale, double offsetX=0.0, double offsetY=0.0) const
	Convert the element position to screen position.

virtual wxPoint2DDouble	WorldToScreen (wxPoint2DDouble position, wxPoint2DDouble translation, double scale, double offsetX=0.0, double offsetY=0.0) const
	Convert a generic position to screen position.

virtual bool	RotatedRectanglesIntersects (wxRect2DDouble rect1, wxRect2DDouble rect2, double angle1, double angle2) const
	Check if two roteted rectangles intersect.

virtual void	DrawDCRectangle (wxPoint2DDouble position, double width, double height, double angle, wxDC &dc) const
	Draw a circle.

virtual void	DrawDCRoundedRectRotated (wxDC &dc, const wxPoint2DDouble &center, double width, double height, double radius, double angleDeg, int arcSegments=8) const

virtual void	DrawDCCircle (wxPoint2DDouble position, double radius, int numSegments, wxGraphicsContext *gc) const
	Draw a circle using device context.

virtual void	DrawDCCircle (wxPoint2DDouble position, double radius, wxDC &dc) const

virtual void	DrawDCArc (wxPoint2DDouble position, double radius, double initAngle, double finalAngle, int numSegments, wxGraphicsContext *gc) const

virtual void	DrawDCArc (wxPoint2DDouble position, double radius, double initAngle, double finalAngle, wxDC &dc) const

virtual void	DrawDCTriangle (std::vector< wxPoint2DDouble > points, wxGraphicsContext *gc) const
	Draw rectangle.

virtual void	DrawDCTriangle (std::vector< wxPoint > points, wxDC &dc) const

virtual void	DrawDCPickbox (wxPoint2DDouble position, wxGraphicsContext *gc) const
	Draw a point.

virtual wxPoint2DDouble	RotateAtPosition (wxPoint2DDouble pointToRotate, double angle, bool degrees=true) const
	Rotate a point as element position being the origin.

virtual wxPoint2DDouble	RotateLocal (wxPoint2DDouble local, double angleDeg) const

virtual wxPoint	RotateAround (const wxPoint2DDouble &p, const wxPoint2DDouble &center, double angleDeg) const

virtual std::vector< Element * >	GetParentList () const
	Get the parent list.

virtual std::vector< Element * >	GetChildList () const
	Get the Child list.

virtual void	CalculateBoundaries (wxPoint2DDouble &leftUp, wxPoint2DDouble &rightBottom) const
	Calculate the element boundaries.

virtual void	GeneralMenuItens (wxMenu &menu)
	Insert general itens to context menu.

virtual double	PointToLineDistance (wxPoint2DDouble point, int *segmentNumber=nullptr) const
	Calculate the distance between a line (formed by point list) and a point.

bool	IsInserted () const
	Check if the element is properly inserted in the workspace.

void	SetInserted (bool inserted=true)
	Set if the element is properly inserted in the workspace.

void	SaveCADProperties (rapidxml::xml_document<> &doc, rapidxml::xml_node<> *elementNode)

bool	OpenCADProperties (rapidxml::xml_node<> *elementNode)

Protected Member Functions
void	CalculateBlockSize (double numInNodes)

Protected Member Functions inherited from ControlElement
void	SaveControlNodes (rapidxml::xml_document<> &doc, rapidxml::xml_node<> *elementNode)

bool	OpenControlNodes (rapidxml::xml_node<> *elementNode)

Protected Attributes
MathExprParser	m_fparser

wxString	m_mathExpression = "sqrt(x^2 + y^2)"

wxString	m_variables = "time,step,x,y"

std::vector< wxString >	m_variablesVector

double *	m_inputValues = nullptr

wxFont	m_font

std::vector< GCText * >	m_gcTextInputVector

GCText	m_symbol

wxSize	m_symbolSize

int	m_maxSringSize = 0

double	m_minimumSize = 36.0

Protected Attributes inherited from ControlElement
std::vector< Node * >	m_nodeList

bool	m_solved = false

double	m_output = 0.0

Protected Attributes inherited from Element
ElementType	m_elementType = ElementType::TYPE_NONE

int	m_elementID = 0

std::vector< Element * >	m_parentList

std::vector< Element * >	m_childList

wxRect2DDouble	m_rect

wxPoint2DDouble	m_position

double	m_width = 0.0

double	m_height = 0.0

double	m_angle = 0.0

double	m_borderSize = 2.0

double	m_rotationAngle = 45.0

double	m_switchSize = 10.0

std::vector< wxRect2DDouble >	m_switchRect

bool	m_selected = false

bool	m_dragging = false

bool	m_showPickbox = false

bool	m_inserted = false

int	m_activePickboxID = ID_PB_NONE

int	m_activeNodeID = 0

std::vector< wxPoint2DDouble >	m_pointList

std::vector< wxPoint2DDouble >	m_movePts

wxPoint2DDouble	m_moveStartPt

wxPoint2DDouble	m_movePos

bool	m_online = true

Additional Inherited Members
Static Public Member Functions inherited from ControlElement
static ControlElement *	GetControlElementFromID (std::vector< std::shared_ptr< ControlElement > > elementList, int id)

Static Public Member Functions inherited from Element
static bool	DoubleFromString (wxWindow *parent, wxString strValue, double &value, wxString errorMsg)
	Get a double value from a string. Show a error message if the conversion fail.

static bool	IntFromString (wxWindow *parent, wxString strValue, int &value, wxString errorMsg)
	Convert a string to int. Show a error message if the conversion fail.

static wxString	StringFromDouble (double value, int minDecimal=1, int maxDecimals=13)
	Convert a double value to string.

Detailed Description

A generic math expression block that can perform math and conditional operations with the inputs.

Author: Thales Lima Oliveira thale.nosp@m.s@uf.nosp@m.u.br

Date: 19/12/2017

Definition at line 37 of file MathExpression.h.

Constructor & Destructor Documentation

◆ MathExpression()

MathExpression::MathExpression ( int id )

Definition at line 24 of file MathExpression.cpp.

                                     : ControlElement(id)
{
    m_variablesVector.push_back("x");
    m_variablesVector.push_back("y");
 
    for (unsigned int i = 0; i < m_variablesVector.size(); ++i) {
        m_gcTextInputVector.push_back(new GCText(m_variablesVector[i]));
    }
 
    // Symbol
    m_symbol.SetFont(wxFont(12, wxFONTFAMILY_ROMAN, wxFONTSTYLE_ITALIC, wxFONTWEIGHT_BOLD));
    m_symbol.SetText("f(x)");
    m_symbolSize = wxSize(m_symbol.GetWidth(), m_symbol.GetHeight());
 
    CalculateBlockSize(static_cast<double>(m_variablesVector.size()));
 
    for (unsigned int i = 0; i < m_variablesVector.size(); ++i) {
        wxPoint2DDouble nodePosition(0, 0);
        if (m_variablesVector.size() == 1) {
            nodePosition = m_position + wxPoint2DDouble(-m_width / 2, 0);
        }
        else {
            nodePosition = m_position + wxPoint2DDouble(-m_width / 2, 9 + 18 * i - m_height / 2);
        }
        Node* nodeIn = new Node(nodePosition, Node::NodeType::NODE_IN, m_borderSize);
        nodeIn->StartMove(m_position);
        m_nodeList.push_back(nodeIn);
    }
    Node* nodeOut = new Node(m_position + wxPoint2DDouble(m_width / 2, 0), Node::NodeType::NODE_OUT, m_borderSize);
    nodeOut->SetAngle(180.0);
    nodeOut->StartMove(m_position);
    m_nodeList.push_back(nodeOut);
 
    UpdatePoints();
}

◆ ~MathExpression()

MathExpression::~MathExpression ( )

Definition at line 60 of file MathExpression.cpp.

{
    for (auto it = m_gcTextInputVector.begin(), itEnd = m_gcTextInputVector.end(); it != itEnd; ++it) { delete* it; }
    m_gcTextInputVector.clear();
    for (auto& node : m_nodeList) if (node) delete node;
    m_nodeList.clear();
}

Member Function Documentation

◆ AddInNode()

void MathExpression::AddInNode ( )

Definition at line 257 of file MathExpression.cpp.

{
    Node* newNode = new Node(wxPoint2DDouble(0, 0), Node::NodeType::NODE_IN, m_borderSize);
    newNode->SetAngle(m_angle);
    m_nodeList.insert(m_nodeList.end() - 1, newNode);
}

◆ CalculateBlockSize()

void MathExpression::CalculateBlockSize ( double numInNodes )

protected

Definition at line 285 of file MathExpression.cpp.

{
    m_maxSringSize = 0;
    for (auto it = m_gcTextInputVector.begin(), itEnd = m_gcTextInputVector.end(); it != itEnd; ++it) {
        if (m_maxSringSize < (*it)->GetWidth()) m_maxSringSize = (*it)->GetWidth();
    }
    if (m_angle == 0.0 || m_angle == 180.0) {
        m_height = 18.0 * numInNodes;
        if (m_height < m_minimumSize) m_height = m_minimumSize;  // minimum height
        m_width = m_maxSringSize + m_symbolSize.GetWidth() + 18;
    }
    else {
        m_width = 18.0 * numInNodes;
        if (m_width < m_minimumSize) m_width = m_minimumSize;  // minimum width
        m_height = m_maxSringSize + m_symbolSize.GetHeight() + 18;
    }
}

◆ Contains()

virtual bool MathExpression::Contains ( wxPoint2DDouble position ) const

inlinevirtual

Checks if the element contains a position.

Parameters

position Position to be checked.

Implements Element.

Definition at line 45 of file MathExpression.h.

45{ return m_rect.Contains(position); }

◆ DrawDC()

void MathExpression::DrawDC	(	GUIColour *	guiColour,
		wxPoint2DDouble	translation,
		double	scale,
		wxGraphicsContext *	gc
	)		const

virtual

Draw the element using GDI+.

Parameters

guiColour	Colours of the system defined in properties.
translation	Translation of the system.
scale	Scale of the system.
gc	Graphics context

Reimplemented from Element.

Definition at line 69 of file MathExpression.cpp.

{
    double pi = 3.1415926535897932;
    if (m_selected) {
        gc->SetPen(*wxTRANSPARENT_PEN);
        gc->SetBrush(guiColour->selection);
        double borderSize = (m_borderSize * 2.0 + 1.0) / scale;
        gc->DrawRectangle(m_position.m_x - m_width / 2 - borderSize / 2, m_position.m_y - m_height / 2 - borderSize / 2, m_width + borderSize, m_height + borderSize);
    }
    gc->SetPen(wxPen(guiColour->enabled, 1));
    gc->SetBrush(guiColour->background);
    gc->DrawRectangle(m_position.m_x - m_width / 2, m_position.m_y - m_height / 2, m_width, m_height);
 
    // Plot input variables and symbol.
    if (m_angle == 0.0) {
        double w = static_cast<double>(m_symbolSize.GetWidth());
        double h = static_cast<double>(m_symbolSize.GetHeight());
        m_symbol.Draw(m_nodeList[m_nodeList.size() - 1]->GetPosition() - wxPoint2DDouble(w + 6.0, h / 2.0), gc, 0, guiColour->bus);
        for (unsigned int i = 0; i < m_gcTextInputVector.size(); ++i) {
            w = static_cast<double>(m_gcTextInputVector[i]->GetWidth());
            h = static_cast<double>(m_gcTextInputVector[i]->GetHeight());
            m_gcTextInputVector[i]->Draw(m_nodeList[i]->GetPosition() + wxPoint2DDouble(6.0, -h / 2.0), gc, 0, guiColour->enabled);
        }
    }
    else if (m_angle == 90.0) {
        double w = static_cast<double>(m_symbolSize.GetWidth());
        double h = static_cast<double>(m_symbolSize.GetHeight());
        m_symbol.Draw(m_nodeList[m_nodeList.size() - 1]->GetPosition() - wxPoint2DDouble(w / 2, h + 6.0), gc, 0, guiColour->bus);
        for (unsigned int i = 0; i < m_gcTextInputVector.size(); ++i) {
            w = static_cast<double>(m_gcTextInputVector[i]->GetWidth());
            h = static_cast<double>(m_gcTextInputVector[i]->GetHeight());
            m_gcTextInputVector[i]->Draw(m_nodeList[i]->GetPosition() + wxPoint2DDouble(-h / 2, w + 6.0), gc, pi / 2.0, guiColour->enabled);
        }
    }
    else if (m_angle == 180.0) {
        double w = static_cast<double>(m_symbolSize.GetWidth());
        double h = static_cast<double>(m_symbolSize.GetHeight());
        m_symbol.Draw(m_nodeList[m_nodeList.size() - 1]->GetPosition() + wxPoint2DDouble(6.0, -h / 2.0), gc, 0, guiColour->bus);
        for (unsigned int i = 0; i < m_gcTextInputVector.size(); ++i) {
            w = static_cast<double>(m_gcTextInputVector[i]->GetWidth());
            h = static_cast<double>(m_gcTextInputVector[i]->GetHeight());
            m_gcTextInputVector[i]->Draw(m_nodeList[i]->GetPosition() - wxPoint2DDouble(w + 6.0, h / 2.0), gc, 0, guiColour->enabled);
        }
    }
    else if (m_angle == 270.0) {
        double w = static_cast<double>(m_symbolSize.GetWidth());
        double h = static_cast<double>(m_symbolSize.GetHeight());
        m_symbol.Draw(m_nodeList[m_nodeList.size() - 1]->GetPosition() + wxPoint2DDouble(-w / 2, 6.0), gc, 0, guiColour->bus);
        for (unsigned int i = 0; i < m_gcTextInputVector.size(); ++i) {
            w = static_cast<double>(m_gcTextInputVector[i]->GetWidth());
            h = static_cast<double>(m_gcTextInputVector[i]->GetHeight());
            m_gcTextInputVector[i]->Draw(m_nodeList[i]->GetPosition() - wxPoint2DDouble(-h / 2, w + 6.0), gc, -pi / 2.0, guiColour->enabled);
        }
    }
 
    gc->SetPen(*wxTRANSPARENT_PEN);
    gc->SetBrush(guiColour->enabled);
    DrawDCNodes(gc);
}

Here is the call graph for this function:

◆ GetCopy()

Element * MathExpression::GetCopy ( )

virtual

Get a the element copy.

Returns: Copy of the element.

Reimplemented from Element.

Definition at line 208 of file MathExpression.cpp.

{
    MathExpression* copy = new MathExpression(*this);
    copy->m_gcTextInputVector.clear();
    for (auto it = m_gcTextInputVector.begin(), itEnd = m_gcTextInputVector.end(); it != itEnd; ++it) {
        copy->m_gcTextInputVector.push_back((*it)->GetCopy());
    }
    return copy;
}

◆ GetMathExpression()

virtual wxString MathExpression::GetMathExpression ( )

inlinevirtual

Definition at line 53 of file MathExpression.h.

53{ return m_mathExpression; }

◆ GetParser()

virtual MathExprParser MathExpression::GetParser ( )

inlinevirtual

Definition at line 57 of file MathExpression.h.

57{ return m_fparser; }

◆ GetVariables()

virtual std::vector< wxString > MathExpression::GetVariables ( )

inlinevirtual

Definition at line 55 of file MathExpression.h.

55{ return m_variablesVector; }

◆ Initialize()

bool MathExpression::Initialize ( )

virtual

Reimplemented from ControlElement.

Definition at line 329 of file MathExpression.cpp.

{
    m_variables = "time,step,switch,";
    for (auto it = m_variablesVector.begin(), itEnd = m_variablesVector.end(); it != itEnd; ++it)
        m_variables += *(it)+",";
    m_variables.RemoveLast();
 
    // Set locale to ENGLISH_US to avoid parser error in numbers (eg. comma).
    int currentLang = wxLocale::GetSystemLanguage();
    wxLocale newLocale(wxLANGUAGE_ENGLISH_US);
    int parserRes = m_fparser.Parse(static_cast<std::string>(m_mathExpression), static_cast<std::string>(m_variables));
    if (parserRes != -1) return false;  // Parse error.
    wxLocale oldLocale(currentLang);   // Return to current language.
 
    if (m_inputValues) delete m_inputValues;
    m_inputValues = new double[m_variablesVector.size() + 3];  // Custom variables + time + step + switch
 
    // Optimize only once to gain performance.
    m_fparser.Optimize();
 
    m_solved = false;
    m_output = 0.0;
    return true;
}

◆ Intersects()

virtual bool MathExpression::Intersects ( wxRect2DDouble rect ) const

inlinevirtual

Check if the element's rect intersects other rect.

Parameters

rect	Rect to check intersection.

Implements Element.

Definition at line 46 of file MathExpression.h.

46{ return m_rect.Intersects(rect); }

◆ OpenElement()

bool MathExpression::OpenElement ( rapidxml::xml_node<> * elementNode )

virtual

Reimplemented from Element.

Definition at line 374 of file MathExpression.cpp.

{
    if (!OpenCADProperties(elementNode)) return false;
    if (!OpenControlNodes(elementNode)) return false;
 
    // Element properties
    std::vector<wxString> variables;
    auto variablesNode = elementNode->first_node("VariableList");
    auto variable = variablesNode->first_node("Variable");
    while (variable) {
        variables.push_back(variable->value());
        variable = variable->next_sibling("Variable");
    }
    SetVariables(variables);
 
    auto mathExprValueNode = elementNode->first_node("MathExprValue");
    m_mathExpression = mathExprValueNode->value();
 
    // Init opened properties
    StartMove(m_position);
    UpdatePoints();
 
    return true;
}

◆ RemoveInNode()

void MathExpression::RemoveInNode ( )

Definition at line 264 of file MathExpression.cpp.

{
    Node* nodeToRemove = *(m_nodeList.end() - 2);
    bool foundChild = false;
    for (auto it = m_childList.begin(), itEnd = m_childList.end(); it != itEnd; ++it) {
        ControlElement* child = static_cast<ControlElement*>(*it);
        auto childNodeList = child->GetNodeList();
        for (auto itN = childNodeList.begin(), itEndN = childNodeList.end(); itN != itEndN; ++itN) {
            Node* node = *itN;
            if (node == nodeToRemove) {
                child->RemoveParent(this);
                RemoveChild(child);
                foundChild = true;
                break;
            }
        }
        if (foundChild) break;
    }
    m_nodeList.erase(m_nodeList.end() - 2);
}

◆ Rotate()

void MathExpression::Rotate ( bool clockwise = true )

virtual

Rotate the element.

Parameters

clockwise True to rotate clockwise, false to rotate counter-clockwise.

Reimplemented from Element.

Definition at line 139 of file MathExpression.cpp.

{
    if (clockwise)
        m_angle += 90.0;
    else
        m_angle -= 90.0;
    if (m_angle >= 360.0)
        m_angle = 0.0;
    else if (m_angle < 0)
        m_angle = 270.0;
 
    UpdatePoints();
 
    for (auto it = m_nodeList.begin(), itEnd = m_nodeList.end(); it != itEnd; ++it) {
        Node* node = *it;
        node->Rotate(clockwise);
    }
}

◆ SaveElement()

rapidxml::xml_node * MathExpression::SaveElement	(	rapidxml::xml_document<> &	doc,
		rapidxml::xml_node<> *	elementListNode
	)

virtual

Reimplemented from Element.

Definition at line 354 of file MathExpression.cpp.

{
    auto elementNode = XMLParser::AppendNode(doc, elementListNode, "MathExpr");
    XMLParser::SetNodeAttribute(doc, elementNode, "ID", m_elementID);
 
    SaveCADProperties(doc, elementNode);
    SaveControlNodes(doc, elementNode);
 
    // Element properties
    auto variablesNode = XMLParser::AppendNode(doc, elementNode, "VariableList");
    for (unsigned int i = 0; i < m_variablesVector.size(); ++i) {
        auto variable = XMLParser::AppendNode(doc, variablesNode, "Variable");
        XMLParser::SetNodeValue(doc, variable, m_variablesVector[i]);
    }
    auto mathExprValue = XMLParser::AppendNode(doc, elementNode, "MathExprValue");
    XMLParser::SetNodeValue(doc, mathExprValue, m_mathExpression);
 
    return elementNode;
}

◆ SetFont()

void MathExpression::SetFont ( wxFont & font )

virtual

Reimplemented from ControlElement.

Definition at line 158 of file MathExpression.cpp.

{
    m_font = font;
    for (auto& txtInput : m_gcTextInputVector) {
        if (txtInput) txtInput->SetFont(font);
    }
    UpdateText();
}

◆ SetMathExpression()

virtual void MathExpression::SetMathExpression ( wxString mathExpression )

inlinevirtual

Definition at line 54 of file MathExpression.h.

54{ m_mathExpression = mathExpression; }

◆ SetVariables()

void MathExpression::SetVariables ( std::vector< wxString > variablesVector )

virtual

Definition at line 314 of file MathExpression.cpp.

{
    m_variablesVector = variablesVector;
    for (auto it = m_gcTextInputVector.begin(), itEnd = m_gcTextInputVector.end(); it != itEnd; ++it) { delete* it; }
    m_gcTextInputVector.clear();
 
    for (auto& it : m_variablesVector) {
        GCText* newInputText = new GCText(it);
        newInputText->SetFont(m_font);
        m_gcTextInputVector.push_back(newInputText);
    }
    UpdateText();
    UpdatePoints();
}

◆ ShowForm()

bool MathExpression::ShowForm	(	wxWindow *	parent,
		Element *	element,
		wxWindow *	workspace = `nullptr`
	)

virtual

Show element data form.

Parameters

parent	Form parent
element	Element that will be edited.

Returns: True if the form is shown, false otherwise.

Reimplemented from Element.

Definition at line 129 of file MathExpression.cpp.

{
    MathExpressionForm mathExprForm(parent, this);
    mathExprForm.CenterOnParent();
    if (mathExprForm.ShowModal() == wxID_OK) {
        return true;
    }
    return false;
}

◆ Solve()

bool MathExpression::Solve	(	double *	input,
		double	timeStep
	)

virtual

Reimplemented from ControlElement.

Definition at line 167 of file MathExpression.cpp.

{
    if (!input) {
        m_output = 0.0;
        return true;
    }
    // Get the input vector from connection lines (can't use default (one) input argument)
    m_inputValues[0] = input[1];  // Current time
    m_inputValues[1] = timeStep;
    m_inputValues[2] = input[2];  // Switch status
    int i = 3;
    for (auto itN = m_nodeList.begin(), itNEnd = m_nodeList.end(); itN != itNEnd; ++itN) {
        Node* node = *itN;
        if (node->GetNodeType() != Node::NodeType::NODE_OUT) {
            if (!node->IsConnected()) {
                m_inputValues[i] = 0.0;  // Node not connected means zero value as input.
            }
            else {
                for (auto itC = m_childList.begin(), itCEnd = m_childList.end(); itC != itCEnd; ++itC) {
                    ConnectionLine* cLine = static_cast<ConnectionLine*>(*itC);
                    auto nodeList = cLine->GetNodeList();
                    for (auto itCN = nodeList.begin(), itCNEnd = nodeList.end(); itCN != itCNEnd; ++itCN) {
                        Node* childNode = *itCN;
                        if (childNode == node) {
                            m_inputValues[i] = cLine->GetValue();
                            break;
                        }
                    }
                }
            }
            ++i;
        }
    }
 
    // Solve the math expression using fparser
    double result = m_fparser.Eval(m_inputValues);
    if (m_fparser.EvalError() != 0) return false;
    m_output = result;
    return true;
}

◆ UpdatePoints()

void MathExpression::UpdatePoints ( )

virtual

Definition at line 218 of file MathExpression.cpp.

{
    CalculateBlockSize(static_cast<double>(m_nodeList.size()) - 1.0);
 
    if (m_nodeList.size() == 2)  // Only one input (and the output).
    {
        if (m_angle == 0.0)
            m_nodeList[0]->SetPosition(m_position + wxPoint2DDouble(-m_width / 2, 0));
        else if (m_angle == 90.0)
            m_nodeList[0]->SetPosition(m_position + wxPoint2DDouble(0, -m_height / 2));
        else if (m_angle == 180.0)
            m_nodeList[0]->SetPosition(m_position + wxPoint2DDouble(m_width / 2, 0));
        else if (m_angle == 270.0)
            m_nodeList[0]->SetPosition(m_position + wxPoint2DDouble(0, m_height / 2));
    }
    else {
        for (unsigned int i = 0; i < m_nodeList.size() - 1; ++i) {
            if (m_angle == 0.0)
                m_nodeList[i]->SetPosition(m_position + wxPoint2DDouble(-m_width / 2, 9 + 18 * i - m_height / 2));
            else if (m_angle == 90.0)
                m_nodeList[i]->SetPosition(m_position + wxPoint2DDouble(m_width / 2 - 9 - 18 * i, -m_height / 2));
            else if (m_angle == 180.0)
                m_nodeList[i]->SetPosition(m_position + wxPoint2DDouble(m_width / 2, m_height / 2 - 9 - 18 * i));
            else if (m_angle == 270.0)
                m_nodeList[i]->SetPosition(m_position + wxPoint2DDouble(9 + 18 * i - m_width / 2, m_height / 2));
        }
    }
    if (m_angle == 0.0)
        m_nodeList[m_nodeList.size() - 1]->SetPosition(m_position + wxPoint2DDouble(m_width / 2, 0));
    else if (m_angle == 90.0)
        m_nodeList[m_nodeList.size() - 1]->SetPosition(m_position + wxPoint2DDouble(0, m_height / 2));
    else if (m_angle == 180.0)
        m_nodeList[m_nodeList.size() - 1]->SetPosition(m_position + wxPoint2DDouble(-m_width / 2, 0));
    else if (m_angle == 270.0)
        m_nodeList[m_nodeList.size() - 1]->SetPosition(m_position + wxPoint2DDouble(0, -m_height / 2));
 
    SetPosition(m_position);  // Update rect.
}

◆ UpdateText()

bool MathExpression::UpdateText ( )

virtual

Update the OpenGL text in the element (if present).

Returns: true if OpenGLText is ok, false otherwise.

Reimplemented from ControlElement.

Definition at line 303 of file MathExpression.cpp.

{
    bool isTextureOK = true;
    m_symbol.SetText(m_symbol.GetText());
    for (auto& txtInput : m_gcTextInputVector)
    {
        txtInput->SetText(txtInput->GetText());
    }
    return isTextureOK;
}

Here is the call graph for this function:

Member Data Documentation

◆ m_font

wxFont MathExpression::m_font

protected

Definition at line 77 of file MathExpression.h.

◆ m_fparser

MathExprParser MathExpression::m_fparser

protected

Definition at line 72 of file MathExpression.h.

◆ m_gcTextInputVector

std::vector<GCText*> MathExpression::m_gcTextInputVector

protected

Definition at line 78 of file MathExpression.h.

◆ m_inputValues

double* MathExpression::m_inputValues = nullptr

protected

Definition at line 76 of file MathExpression.h.

◆ m_mathExpression

wxString MathExpression::m_mathExpression = "sqrt(x^2 + y^2)"

protected

Definition at line 73 of file MathExpression.h.

◆ m_maxSringSize

int MathExpression::m_maxSringSize = 0

protected

Definition at line 81 of file MathExpression.h.

◆ m_minimumSize

double MathExpression::m_minimumSize = 36.0

protected

Definition at line 82 of file MathExpression.h.

◆ m_symbol

GCText MathExpression::m_symbol

protected

Definition at line 79 of file MathExpression.h.

◆ m_symbolSize

wxSize MathExpression::m_symbolSize

protected

Definition at line 80 of file MathExpression.h.

◆ m_variables

wxString MathExpression::m_variables = "time,step,x,y"

protected

Definition at line 74 of file MathExpression.h.

◆ m_variablesVector

std::vector<wxString> MathExpression::m_variablesVector

protected

Definition at line 75 of file MathExpression.h.

The documentation for this class was generated from the following files:

Project/elements/controlElement/MathExpression.h
Project/elements/controlElement/MathExpression.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MathExpression()

◆ ~MathExpression()

Member Function Documentation

◆ AddInNode()

◆ CalculateBlockSize()

◆ Contains()

◆ DrawDC()

◆ GetCopy()

◆ GetMathExpression()

◆ GetParser()

◆ GetVariables()

◆ Initialize()

◆ Intersects()

◆ OpenElement()

◆ RemoveInNode()

◆ Rotate()

◆ SaveElement()

◆ SetFont()

◆ SetMathExpression()

◆ SetVariables()

◆ ShowForm()

◆ Solve()

◆ UpdatePoints()

◆ UpdateText()

Member Data Documentation

◆ m_font

◆ m_fparser

◆ m_gcTextInputVector

◆ m_inputValues

◆ m_mathExpression

◆ m_maxSringSize

◆ m_minimumSize

◆ m_symbol

◆ m_symbolSize

◆ m_variables

◆ m_variablesVector