jGL::OrthoCam Class Reference

An orthographic camera for 2D. More...

#include <orthoCam.h>

Public Member Functions
	OrthoCam (int resx, int resy)
	Construct a new Ortho Cam object.
	OrthoCam (int resx, int resy, glm::vec2 pos)
	Construct a new Ortho Cam object.
glm::vec4	screenToWorld (float x, float y) const
	Convert screen position to world position.
glm::vec2	worldToScreen (float x, float y) const
	Convert world position to screen coordinate.
const glm::mat4 &	getVP () const
const glm::mat4	getProjection () const
glm::vec2	getResolution () const
glm::vec2	getPosition () const
float	getZoomLevel () const
void	incrementZoom (float dz)
void	setPosition (glm::vec2 newPosition)
void	setPosition (float x, float y)
void	move (float dx, float dy)
void	setResolution (glm::ivec2 wh)

Detailed Description

An orthographic camera for 2D.

World coordinates are scaled to the size of the longest screen dimension in pixels. So [1, 1] is the top right of the screen always.

Position is the bottom left of corner. Increasing y in world space goes up the screen.

Constructor & Destructor Documentation

OrthoCam() [1/2]

jGL::OrthoCam::OrthoCam ( int  resx, int  resy  )

inline

Construct a new Ortho Cam object.

Parameters

resx	pixel resolution in x
resy	pixel resolution in y

OrthoCam() [2/2]

jGL::OrthoCam::OrthoCam ( int  resx, int  resy, glm::vec2  pos  )

inline

Construct a new Ortho Cam object.

Parameters

resx	pixel resolution in x.
resy	pixel resolution in y.
pos	position in world coordinates.

Member Function Documentation

getPosition()

glm::vec2 jGL::OrthoCam::getPosition ( ) const

inline

getProjection()

const glm::mat4 jGL::OrthoCam::getProjection ( ) const

inline

getResolution()

glm::vec2 jGL::OrthoCam::getResolution ( ) const

inline

getVP()

const glm::mat4 & jGL::OrthoCam::getVP ( ) const

inline

getZoomLevel()

float jGL::OrthoCam::getZoomLevel ( ) const

inline

incrementZoom()

void jGL::OrthoCam::incrementZoom ( float  dz )

inline

move()

void jGL::OrthoCam::move ( float  dx, float  dy  )

inline

screenToWorld()

glm::vec4 jGL::OrthoCam::screenToWorld ( float  x, float  y  ) const

inline

Convert screen position to world position.

Parameters

x	screen x coordinate.
y	screen y coordinate.

Returns

glm::vec4 world coordinates (wx, wy, _, 1.0)

setPosition() [1/2]

void jGL::OrthoCam::setPosition ( float  x, float  y  )

inline

setPosition() [2/2]

void jGL::OrthoCam::setPosition ( glm::vec2  newPosition )

inline

setResolution()

void jGL::OrthoCam::setResolution ( glm::ivec2  wh )

inline

worldToScreen()

glm::vec2 jGL::OrthoCam::worldToScreen ( float  x, float  y  ) const

inline

Convert world position to screen coordinate.

Parameters

x	world x coordinate.
y	world y coordinate.

Returns

glm::vec2 screen coordinate.

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

• include/jGL/orthoCam.h