Detailed Description

This class makes it easy to plot points and functions on 2D cartesian coordinates.

#include <GPlot.h>

Public Member Functions
	GPlotWindow (GImage *pImage, double xmin, double ymin, double xmax, double ymax)
	pImage is the image onto which you wish to plot More...

	~GPlotWindow ()

void	arrow (double x1, double y1, double x2, double y2, unsigned int col, int headSize)
	Draws an arrow from (x1, y1) to (x2, y2). headSize is specified in pixels. More...

void	dot (double x, double y, float radius, unsigned int colFore, unsigned int colBack)
	Plots a dot at the specified location. You must specify both the foreground and background color so that it can make the dot appear to be centered at the precise sub-pixel location specified. radius is specified in pixels. More...

void	fatLine (double x1, double y1, double x2, double y2, float thickness, unsigned int col)
	Plots a fat line. More...

void	function (MathFunc pFunc, unsigned int col, void *pThis)
	Plots a function. More...

void	gridLines (int maxHorizAxisLabels, int maxVertAxisLabels, unsigned int col)
	Draw grid lines If maxHorizAxisLabels is 0, no grid lines will be drawn for the horizontal axis. If maxHorizAxisLabels is -1, a logarithmic scale will be used for the horizontal axis. Same with maxVertAxisLabels. More...

GImage *	image ()
	Returns the image that was passed in to the constructor. More...

void	label (double x, double y, const char *szLabel, float size, unsigned int col)
	Draws a label at the specified location. (A size of 1.0f will be small but legible.) More...

GImage *	labelAxes (int maxHorizAxisLabels, int maxVertAxisLabels, int precision, float size, unsigned int color, double angle)
	Copy the image onto a larger image, and label the axes on the larger image. If maxHorizAxisLabels is 0, no labels will be drawn for the horizontal axis. If maxHorizAxisLabels is -1, a logarithmic scale will be used for the horizontal axis. Same with maxVertAxisLabels. More...

void	line (double x1, double y1, double x2, double y2, unsigned int col)
	Plots a line. More...

double	pixelHeight () const
	Returns the height represented by each pixel. More...

double	pixelWidth () const
	Returns the width represented by each pixel. More...

void	point (double x, double y, unsigned int col)
	Plots a single pixel. (Note that for most applications, PlotDot is a better choice because it draws a larger dot centered at the sub-pixel location that you specify.) More...

void	viewToWindow (int x, int y, double pX, double pY)
	Convert from view (image) coordinates to window (Euclidean space) coordinates. More...

GDoubleRect *	window ()
	Returns the rect of the Euclidean space that this image represents. More...

void	windowToView (double x, double y, float pX, float pY)
	Convert from window (Euclidean space) coordinates to view (image) coordinates. More...

void	windowToView (double x, double y, int pX, int pY)
	Convert from window (Euclidean space) coordinates to view (image) coordinates. More...

Static Protected Member Functions
static void	numericLabel (GImage *pImage, double value, int x, int y, int precision, float size, unsigned int color, double angle)

static void	stringLabel (GImage pImage, const char szText, int x, int y, float size, unsigned int color, double angle)

Protected Attributes
int	m_h

GImage *	m_pImage

int	m_w

GDoubleRect	m_window

Constructor & Destructor Documentation

GClasses::GPlotWindow::GPlotWindow	(	GImage *	pImage,
		double	xmin,
		double	ymin,
		double	xmax,
		double	ymax
	)

pImage is the image onto which you wish to plot

GClasses::GPlotWindow::~GPlotWindow ( )

Member Function Documentation

void GClasses::GPlotWindow::arrow	(	double	x1,
		double	y1,
		double	x2,
		double	y2,
		unsigned int	col,
		int	headSize
	)

Draws an arrow from (x1, y1) to (x2, y2). headSize is specified in pixels.

void GClasses::GPlotWindow::dot	(	double	x,
		double	y,
		float	radius,
		unsigned int	colFore,
		unsigned int	colBack
	)

Plots a dot at the specified location. You must specify both the foreground and background color so that it can make the dot appear to be centered at the precise sub-pixel location specified. radius is specified in pixels.

void GClasses::GPlotWindow::fatLine	(	double	x1,
		double	y1,
		double	x2,
		double	y2,
		float	thickness,
		unsigned int	col
	)

Plots a fat line.

void GClasses::GPlotWindow::function	(	MathFunc	pFunc,
		unsigned int	col,
		void *	pThis
	)

Plots a function.

void GClasses::GPlotWindow::gridLines	(	int	maxHorizAxisLabels,
		int	maxVertAxisLabels,
		unsigned int	col
	)

Draw grid lines If maxHorizAxisLabels is 0, no grid lines will be drawn for the horizontal axis. If maxHorizAxisLabels is -1, a logarithmic scale will be used for the horizontal axis. Same with maxVertAxisLabels.

GImage* GClasses::GPlotWindow::image ( )

inline

Returns the image that was passed in to the constructor.

void GClasses::GPlotWindow::label	(	double	x,
		double	y,
		const char *	szLabel,
		float	size,
		unsigned int	col
	)

Draws a label at the specified location. (A size of 1.0f will be small but legible.)

GImage* GClasses::GPlotWindow::labelAxes	(	int	maxHorizAxisLabels,
		int	maxVertAxisLabels,
		int	precision,
		float	size,
		unsigned int	color,
		double	angle
	)

Copy the image onto a larger image, and label the axes on the larger image. If maxHorizAxisLabels is 0, no labels will be drawn for the horizontal axis. If maxHorizAxisLabels is -1, a logarithmic scale will be used for the horizontal axis. Same with maxVertAxisLabels.

void GClasses::GPlotWindow::line	(	double	x1,
		double	y1,
		double	x2,
		double	y2,
		unsigned int	col
	)

Plots a line.

static void GClasses::GPlotWindow::numericLabel	(	GImage *	pImage,
		double	value,
		int	x,
		int	y,
		int	precision,
		float	size,
		unsigned int	color,
		double	angle
	)

staticprotected

double GClasses::GPlotWindow::pixelHeight ( ) const

inline

Returns the height represented by each pixel.

double GClasses::GPlotWindow::pixelWidth ( ) const

inline

Returns the width represented by each pixel.

void GClasses::GPlotWindow::point	(	double	x,
		double	y,
		unsigned int	col
	)

Plots a single pixel. (Note that for most applications, PlotDot is a better choice because it draws a larger dot centered at the sub-pixel location that you specify.)

static void GClasses::GPlotWindow::stringLabel	(	GImage *	pImage,
		const char *	szText,
		int	x,
		int	y,
		float	size,
		unsigned int	color,
		double	angle
	)

staticprotected

void GClasses::GPlotWindow::viewToWindow	(	int	x,
		int	y,
		double *	pX,
		double *	pY
	)

inline

Convert from view (image) coordinates to window (Euclidean space) coordinates.

GDoubleRect* GClasses::GPlotWindow::window ( )

inline

Returns the rect of the Euclidean space that this image represents.

void GClasses::GPlotWindow::windowToView	(	double	x,
		double	y,
		float *	pX,
		float *	pY
	)

inline

Convert from window (Euclidean space) coordinates to view (image) coordinates.

void GClasses::GPlotWindow::windowToView	(	double	x,
		double	y,
		int *	pX,
		int *	pY
	)

inline

Convert from window (Euclidean space) coordinates to view (image) coordinates.

Member Data Documentation

int GClasses::GPlotWindow::m_h

protected

GImage* GClasses::GPlotWindow::m_pImage

protected

int GClasses::GPlotWindow::m_w

protected

GDoubleRect GClasses::GPlotWindow::m_window

protected

Detailed Description

Public Member Functions

Static Protected Member Functions

Protected Attributes

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation