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)

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

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