Camera Class Reference

Class used to manipulate a 2D camera. More...

#include <Camera.hpp>

Public Member Functions
MYGL_EXPORT	Camera () noexcept
	Default constructor, creates a camera pointing to the center of the window.
MYGL_EXPORT	Camera (int x, int y) noexcept
	Creates a 2D camera with its bottom left hand corner coordinates.
MYGL_EXPORT void	setPosition (int x, int y) noexcept
	Sets the camera's position.
MYGL_EXPORT glm::vec2	getPosition () const noexcept
	Get the camera's current position.
MYGL_EXPORT void	setSpeed (float speed) noexcept
	Sets the camera's speed, in pixels per second.
MYGL_EXPORT float	getSpeed () const noexcept
	Get the camera's speed.
MYGL_EXPORT glm::mat4	lookAt () const
	Returns the camera's "look_at" matrix, it is used internally by a Window to set its view when drawing things.
Functions related to the camera's movement
These functions all have a common parameter (float frametime), this parameter represents the frametime, it is needed in order to move the camera at a constant speed (speed which is expressed in pixels / second and defined with a call to setSpeed(float)), the speed would then be independent from the framerate. You can get the frametime with a call to the getFrametime() function of the current Window, for example : ++ my::Window window(800, 600, "window"); my::Camera camera(0, 0); camera.setSpeed(50.0f); window.setCamera(camera); ... float frametime; bool running = true; while(window.isRunning()) { ... window.clear(...); frametime = window.getFrametime(); camera.moveUp(frametime); ... window.display() }
MYGL_EXPORT void	moveUp (float frametime) noexcept
	Moves the camera upwards.
MYGL_EXPORT void	moveDown (float frametime) noexcept
	Moves the camera downwards.
MYGL_EXPORT void	moveLeft (float frametime) noexcept
	Moves the camera to the left.
MYGL_EXPORT void	moveRight (float frametime) noexcept
	Moves the camera to the right.

Detailed Description

Class used to manipulate a 2D camera.

Definition at line 14 of file Camera.hpp.

Constructor & Destructor Documentation

Camera()

MYGL_EXPORT Camera ( int x, int y )

noexcept

Creates a 2D camera with its bottom left hand corner coordinates.

Parameters

x	The camera's x coordinate
y	The camera's y coordinate

Member Function Documentation

getPosition()

MYGL_EXPORT glm::vec2 getPosition ( ) const

noexcept

Get the camera's current position.

Returns

The camera's bottom left hand corner's position

getSpeed()

MYGL_EXPORT float getSpeed ( ) const

noexcept

Get the camera's speed.

Returns

the camera's speed

lookAt()

MYGL_EXPORT glm::mat4 lookAt

(

)

const

Returns the camera's "look_at" matrix, it is used internally by a Window to set its view when drawing things.

Returns

The camera's "look_at" matrix

setPosition()

MYGL_EXPORT void setPosition ( int x, int y )

noexcept

Sets the camera's position.

Parameters

x	The x coordinate of the bottom left hand corner
y	The y coordinate of the bottom left hand corner

setSpeed()

MYGL_EXPORT void setSpeed ( float speed )

noexcept

Sets the camera's speed, in pixels per second.

Parameters

speed

The camera's speed, used with the frametime to produce fluid movements

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

• Camera.hpp