This class creates device independent coordinate systems. More...

#include "../include/GTran.h"

Public Member Functions
	GTran ()

	GTran (Rect rect)

	~GTran ()

int	set (Rect rect)

int	resize (Rect rect)

float	tranWindowNdcX (float x)

float	tranWindowNdcY (float y)

float	tranWindowPlotX (float x)

float	tranWindowPlotY (float y)

float	tranPlotNdcX (float x)

float	tranPlotNdcY (float y)

float	tranPlotWindowX (float x)

float	tranPlotWindowY (float y)

float	tranNdcPlotX (float x)

float	tranNdcPlotY (float y)

Rect	getClipRect ()

bool	isPointsInWindow (int num, Point *pts)

bool	isPointsInWindow (Points &pts)

int	getWindow (Rect &rect)

Rect	getWindow ()

int	getViewport (Rect &rect)

Rect	getViewport ()

int	getNdc (Rect &rect)

Rect	getNdc ()

int	setWindow (Rect rect)

int	setViewport (Rect rect)

int	print ()

Static Public Member Functions
static float	tranWindowX (GTran gtran1, GTran gtran2, float x)

static float	tranWindowY (GTran gtran1, GTran gtran2, float y)

Detailed Description

This class creates device independent coordinate systems.

Author: Dan Vietor

Constructor & Destructor Documentation

◆ GTran() [1/2]

GTran::GTran ( )

Constructor. Initializes the class values

References set().

◆ GTran() [2/2]

GTran::GTran ( Rect rect )

Constructor. Sets extent of space

Parameters

rect	Rect class defining extent

References set().

◆ ~GTran()

GTran::~GTran ( )

Destructor

Member Function Documentation

◆ getClipRect()

Rect GTran::getClipRect ( )

Gets the current clip rectangle in device plot space

Returns: Rect class with clip rectangle values

References tranNdcPlotX(), tranNdcPlotY(), WXP::Rect::xmax, WXP::Rect::xmin, WXP::Rect::ymax, and WXP::Rect::ymin.

◆ getNdc() [1/2]

Rect GTran::getNdc ( )

Gets the normalized device coordinate extent

Returns: Rect class with NDC extent

References WXP::Rect::xmax, WXP::Rect::xmin, WXP::Rect::ymax, and WXP::Rect::ymin.

◆ getNdc() [2/2]

int GTran::getNdc ( Rect & rect )

Gets the normalized device coordinate extent

Return values

rect	Rect class to put NDC extent

References WXP::Rect::xmax, WXP::Rect::xmin, WXP::Rect::ymax, and WXP::Rect::ymin.

Referenced by WXP::Graph::getMaxViewport(), and WXP::Graph::setViewportAspect().

◆ getViewport() [1/2]

Rect GTran::getViewport ( )

Gets the current viewport coordinates

Returns: Rect class with viewport extent in NDC space

References WXP::Rect::xmax, WXP::Rect::xmin, WXP::Rect::ymax, and WXP::Rect::ymin.

◆ getViewport() [2/2]

int GTran::getViewport ( Rect & rect )

Gets the current viewport coordinates

Return values

rect	Rect class to put viewport extent in NDC space

References WXP::Rect::xmax, WXP::Rect::xmin, WXP::Rect::ymax, and WXP::Rect::ymin.

Referenced by WXP::Graph::getViewport().

◆ getWindow() [1/2]

Rect GTran::getWindow ( )

Gets the current window/world coordinates

Returns: Rect class with window extent

References WXP::Rect::xmax, WXP::Rect::xmin, WXP::Rect::ymax, and WXP::Rect::ymin.

◆ getWindow() [2/2]

int GTran::getWindow ( Rect & rect )

Gets the current window/world coordinates

Return values

rect	Rect class to put window extent

References WXP::Rect::xmax, WXP::Rect::xmin, WXP::Rect::ymax, and WXP::Rect::ymin.

Referenced by WXP::Graph::getWindow(), and WXP::Graph::setFontSpec().

◆ isPointsInWindow() [1/2]

bool GTran::isPointsInWindow	(	int	num,
		Point *	pts
	)

Checks to see if all the values are within the current viewport

Parameters

num_pt	Number of points in the array
pts	Point array

Returns: true if all points within viewport

References WXP::Point::x, and WXP::Point::y.

◆ isPointsInWindow() [2/2]

bool GTran::isPointsInWindow ( Points & pts )

Checks to see if all the values are within the current viewport

Parameters

pts	Points class

Returns: true if all points within viewport

References WXP::Points::getNum(), WXP::Points::getX(), and WXP::Points::getY().

◆ resize()

int GTran::resize ( Rect rect )

Resizes the translation space

Parameters

rect	New space extent

References WXP::Point::x, WXP::Rect::xmax, WXP::Rect::xmin, WXP::Point::y, WXP::Rect::ymax, and WXP::Rect::ymin.

◆ set()

int GTran::set ( Rect rect )

Sets up the transformation

Parameters

rect	Defines extent of space

References WXP::Point::x, WXP::Rect::xmax, WXP::Rect::xmin, WXP::Point::y, WXP::Rect::ymax, and WXP::Rect::ymin.

Referenced by GTran().

◆ setViewport()

int GTran::setViewport ( Rect rect )

Sets the viewport coordinate extent in NDC space

Parameters

rect	Rect clas with viewport extent

References WXP::Point::x, WXP::Rect::xmax, WXP::Rect::xmin, WXP::Point::y, WXP::Rect::ymax, and WXP::Rect::ymin.

Referenced by WXP::Graph::setViewport(), and WXP::Graph::setViewportAspect().

◆ setWindow()

int GTran::setWindow ( Rect rect )

Sets the window coordinate extent

Parameters

rect	Rect class with window extent

References WXP::Point::x, WXP::Rect::xmax, WXP::Rect::xmin, WXP::Point::y, WXP::Rect::ymax, and WXP::Rect::ymin.

Referenced by WXP::Graph::setWindow().

◆ tranNdcPlotX()

float GTran::tranNdcPlotX ( float x )

Translates normalized device coordinates to device plot coordinates for X

Parameters

x	X coordinate to translate

Returns: X in plot space

References WXP::Point::x.

Referenced by getClipRect().

◆ tranNdcPlotY()

float GTran::tranNdcPlotY ( float y )

Translates normalized device coordinates to device plot coordinates for Y

Parameters

y	Y coordinate to translate

Returns: Y in plot space

References WXP::Point::y.

Referenced by getClipRect().

◆ tranPlotNdcX()

float GTran::tranPlotNdcX ( float x )

Translates device plot coordinates to normalized coordinates for X

Parameters

x	X coordinate to translate

Returns: X in NDC space

References WXP::Point::x.

Referenced by WXP::Graph::tranPlotView().

◆ tranPlotNdcY()

float GTran::tranPlotNdcY ( float y )

Translates device plot coordinates to normalized coordinates for Y

Parameters

y	Y coordinate to translate

Returns: Y in NDC space

References WXP::Point::y.

Referenced by WXP::Graph::tranPlotView().

◆ tranPlotWindowX()

float GTran::tranPlotWindowX ( float x )

Translates device plot coordinates to world coordinates for X

Parameters

x	X coordinate to translate

Returns: X in world space

References WXP::Point::x.

Referenced by WXP::Graph::tranPlotWindow(), and WXP::Graph::tranWindow().

◆ tranPlotWindowY()

float GTran::tranPlotWindowY ( float y )

Translates device plot coordinates to world coordinates for Y

Parameters

y	Y coordinate to translate

Returns: Y in world space

References WXP::Point::y.

Referenced by WXP::Graph::tranPlotWindow(), and WXP::Graph::tranWindow().

◆ tranWindowNdcX()

float GTran::tranWindowNdcX ( float x )

Translates world coordinates to normalizes device coordinates for X

Parameters

x	X coordinate to translate

Returns: X in NDC space

References WXP::Point::x.

◆ tranWindowNdcY()

float GTran::tranWindowNdcY ( float y )

Translates world coordinates to normalizes device coordinates for Y

Parameters

y	Y coordinate to translate

Returns: Y in NDC space

References WXP::Point::y.

◆ tranWindowPlotX()

float GTran::tranWindowPlotX ( float x )

Translates world coordinates to device plot coordinates for X

Parameters

x	X coordinate to translate

Returns: X in device plot space

References WXP::Point::x.

Referenced by WXP::Graph::clearRect(), WXP::Graph::drawImage(), WXP::Graph::drawMark(), WXP::Graph::drawText(), and WXP::Graph::tranWindow().

◆ tranWindowPlotY()

float GTran::tranWindowPlotY ( float y )

Translates world coordinates to device plot coordinates for Y

Parameters

y	Y coordinate to translate

Returns: Y in device plot space

References WXP::Point::y.

Referenced by WXP::Graph::clearRect(), WXP::Graph::drawFill(), WXP::Graph::drawImage(), WXP::Graph::drawLine(), WXP::Graph::drawMark(), WXP::Graph::drawText(), and WXP::Graph::tranWindow().

◆ tranWindowX()

float GTran::tranWindowX	(	GTran	gtran1,
		GTran	gtran2,
		float	x
	)

static

Translates between two translation spaces in X

Parameters

gtran1	Input translation space
gtran2	Output translation space
x	X world coordinate to translate

Returns: X in world space for new translation

◆ tranWindowY()

float GTran::tranWindowY	(	GTran	gtran1,
		GTran	gtran2,
		float	y
	)

static

Translates between two translation spaces in Y

Parameters

gtran1	Input translation space
gtran2	Output translation space
y	Y world coordinate to translate

Returns: Y in world space for new translation

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

GTran.h
GTran.cc

Public Member Functions

Static Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ GTran() [1/2]

◆ GTran() [2/2]

◆ ~GTran()

Member Function Documentation

◆ getClipRect()

◆ getNdc() [1/2]

◆ getNdc() [2/2]

◆ getViewport() [1/2]

◆ getViewport() [2/2]

◆ getWindow() [1/2]

◆ getWindow() [2/2]

◆ isPointsInWindow() [1/2]

◆ isPointsInWindow() [2/2]

◆ resize()

◆ set()

◆ setViewport()

◆ setWindow()

◆ tranNdcPlotX()

◆ tranNdcPlotY()

◆ tranPlotNdcX()

◆ tranPlotNdcY()

◆ tranPlotWindowX()

◆ tranPlotWindowY()

◆ tranWindowNdcX()

◆ tranWindowNdcY()

◆ tranWindowPlotX()

◆ tranWindowPlotY()

◆ tranWindowX()

◆ tranWindowY()