PlotStatement Class Reference

#include <plot.h>

Inheritance diagram for PlotStatement:

Collaboration diagram for PlotStatement:

Public Member Functions
	PlotStatement (const char *name, const char *parameter, const char *file)
	PlotStatement (const char *name, const char *parameter)
	~PlotStatement ()
char *	Execute ()
Public Member Functions inherited from StatementNode
	StatementNode ()
	StatementNode (const char *text)
virtual	~StatementNode ()
NodeType	GetNodeType ()
virtual SyntaxNode *	GetNext ()
virtual char *	GetTextCode ()
void	Attach (SyntaxNode *node)
void	Detach (SyntaxNode *node)
void	Replace (SyntaxNode *n, SyntaxNode *x)
Public Member Functions inherited from SyntaxNode
	SyntaxNode ()
virtual	~SyntaxNode ()
void	SetFirstNode ()
bool	GetFirstNode () const
SyntaxNode *	GetParent () const
void	SetParent (SyntaxNode *node)
virtual ReductionType	GetReductionType ()
virtual void	ResetIterator ()

Private Attributes
char *	name
char *	parameter
char *	file

Additional Inherited Members
Protected Attributes inherited from StatementNode
char *	statementText
Protected Attributes inherited from SyntaxNode
CharBuffer *	output
SyntaxNode *	parent
SyntaxNode *	iterator
bool	leftBottom

Detailed Description

Definition at line 35 of file plot.h.

Constructor & Destructor Documentation

PlotStatement() [1/2]

PlotStatement::PlotStatement	(	const char *	name,
		const char *	parameter,
		const char *	file
	)

Definition at line 38 of file plot.cpp.

References AllocAndCopy(), file, name, parameter, and StatementNode::StatementNode().

                                                                                      :
    StatementNode()
{
    AllocAndCopy(&this->name, name);
    AllocAndCopy(&this->parameter, parameter);
    AllocAndCopy(&this->file, file);
}

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PlotStatement() [2/2]

PlotStatement::PlotStatement	(	const char *	name,
		const char *	parameter
	)

Definition at line 46 of file plot.cpp.

References AllocAndCopy(), file, name, parameter, and StatementNode::StatementNode().

Referenced by Parser::ParseDrawStatement().

                                                                    :
    StatementNode()
{
    AllocAndCopy(&this->name, name);
    AllocAndCopy(&this->parameter, parameter);
    file = nullptr;
}

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~PlotStatement()

PlotStatement::~PlotStatement

(

)

Definition at line 54 of file plot.cpp.

References file, name, and parameter.

{
    delete [] name;
    delete [] parameter;

    if (file != nullptr)
    {
        delete [] file;
    }
}

Member Function Documentation

Execute()

char * PlotStatement::Execute ( )

virtual

Implements StatementNode.

Definition at line 65 of file plot.cpp.

References CharBuffer::Append(), DecimalSystem::DecimalSystem(), CharBuffer::Empty(), CharBuffer::EnsureGrowth(), Program::Functions, FunctionList::GetFunctionDef(), Grid::GetHorizontalResolution(), Grid::GetScreenCoordinates(), CharBuffer::GetString(), NumeralSystem::GetText(), Grid::Grid(), name, SyntaxNode::output, parameter, RealNumber::RealNumber(), Grid::SetFunctionBounderies(), RealNumber::SetRealValue(), and Grid::SetScreenBounderues().

{
    UserFunction* function = Program->Functions->GetFunctionDef(name, parameter);

    if (function == nullptr)
    {
        return (char*)("Function does not exists." NEWLINE);
    }

    output->Empty();

    Grid* grid = new Grid(function);
    static const int width = 400;
    static const int height = 300;

    grid->SetScreenBounderues(0, width, 20, height);
    bool first = true;

    static const double min = -5.0;
    static const double max = +5.0;
    grid->SetFunctionBounderies(min, max);

    double x = min;
    double step = grid->GetHorizontalResolution();

    int screenX;
    int screenY;

    RealNumber* n = new RealNumber();
    NumeralSystem* ns = new DecimalSystem(5);

    while (x < max)
    {
        grid->GetScreenCoordinates(x, &screenX, &screenY);

        output->EnsureGrowth(32);

        if (screenX != -1 && screenY != -1)
        {
            if (first)
            {
                output->Append('(');
                n->SetRealValue(screenX);
                output->Append(ns->GetText(n));
                output->Append(',');
                n->SetRealValue(height - screenY);
                output->Append(ns->GetText(n));
                output->Append(')');
                output->Append(NEWLINE);
                first = false;
            }
            else
            {
                output->Append('(');
                n->SetRealValue(screenX);
                output->Append(ns->GetText(n));
                output->Append(',');
                n->SetRealValue(height - screenY);
                output->Append(ns->GetText(n));
                output->Append(')');
                output->Append(NEWLINE);
            }
        }

        x = x + step;
    }

    delete n;
    delete ns;
    delete grid;

    return output->GetString();
}

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Member Data Documentation

file

char* PlotStatement::file

private

Definition at line 46 of file plot.h.

Referenced by PlotStatement(), and ~PlotStatement().

name

char* PlotStatement::name

private

Definition at line 44 of file plot.h.

Referenced by Execute(), PlotStatement(), and ~PlotStatement().

parameter

char* PlotStatement::parameter

private

Definition at line 45 of file plot.h.

Referenced by Execute(), PlotStatement(), and ~PlotStatement().

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

• src/main/statement/plot.h
• src/main/statement/plot.cpp