OrthoCameraComponentInstance Class Reference

#include <orthocameracomponent.h>

Public Member Functions
	OrthoCameraComponentInstance (EntityInstance &entity, Component &resource)
virtual bool	init (utility::ErrorState &errorState) override
virtual void	setRenderTargetSize (const glm::ivec2 &size) override
virtual const glm::mat4 &	getProjectionMatrix () const override
virtual const glm::mat4	getViewMatrix () const override
const OrthoCameraProperties &	getProperties ()
void	setProperties (const OrthoCameraProperties &properties)
void	setMode (EOrthoCameraMode mode)
void	setClipRect (const math::Rect &clipRect)
void	restoreClipRect ()
virtual const glm::mat4 &	getRenderProjectionMatrix () const override
Public Member Functions inherited from CameraComponentInstance
	CameraComponentInstance (EntityInstance &entity, Component &resource)
glm::vec3	screenToWorld (const glm::vec3 &screenPos, const math::Rect &viewport)
glm::vec3	worldToScreen (const glm::vec3 &worldPos, const math::Rect &viewport)
glm::vec3	rayFromScreen (const glm::vec2 &screenPos, const math::Rect &viewport)
const glm::ivec2 &	getRenderTargetSize () const
Public Member Functions inherited from ComponentInstance
	ComponentInstance (EntityInstance &entity, Component &resource)
virtual void	update (double deltaTime)
nap::EntityInstance *	getEntityInstance () const
nap::Component *	getComponent () const
template<typename T >
T *	getComponent () const
Public Member Functions inherited from Object
	Object ()
virtual	~Object ()
virtual void	onDestroy ()
	Object (Object &)=delete
Object &	operator= (const Object &)=delete
	Object (Object &&)=delete
Object &	operator= (Object &&)=delete

Static Public Member Functions
static glm::mat4	createRenderProjectionMatrix (float left, float right, float bottom, float top, float zNear, float zFar)
static glm::mat4	createRenderProjectionMatrix (float left, float right, float bottom, float top)
Static Public Member Functions inherited from Object
static bool	isIDProperty (rtti::Instance &object, const rtti::Property &property)

Additional Inherited Members
Public Attributes inherited from Object
std::string	mID
	Property: 'mID' unique name of the object. Used as an identifier by the system. More...

Description

An orthographic camera. The space that the camera is operating depends on the mode that is set. By default this camera operates in pixel space. Use setMode to change the space that the camera is operating in. The transform to calculate the view matrix is retrieved from the transform component.

Inheritance diagram for OrthoCameraComponentInstance:

Collaboration diagram for OrthoCameraComponentInstance:

Constructor & Destructor Documentation

OrthoCameraComponentInstance()

OrthoCameraComponentInstance	(	EntityInstance &	entity,
		Component &	resource
	)

Member Function Documentation

createRenderProjectionMatrix() [1/2]

static glm::mat4 createRenderProjectionMatrix ( float  left, float  right, float  bottom, float  top  )

static

Creates a Vulkan compatible orthographic projection matrix without having to specify near and far coordinates. Use this matrix, instead of glm::ortho(), when drawing geometry and an ortographic projection matrix is required as shader input. For all regular (CPU) related orthographic calculations, use glm::ortho().

Returns

Vulkan compatible orthographic matrix.

createRenderProjectionMatrix() [2/2]

static glm::mat4 createRenderProjectionMatrix ( float  left, float  right, float  bottom, float  top, float  zNear, float  zFar  )

static

Creates a Vulkan compatible orthographic projection matrix, use this matrix instead of glm::ortho when interfacing with the renderer. Use this matrix, instead of glm::ortho(), when drawing geometry and an ortographic projection matrix is required as shader input. For all regular (CPU) related orthographic calculations, use glm::ortho().

Returns

Vulkan compatible orthographic matrix.

getProjectionMatrix()

virtual const glm::mat4& getProjectionMatrix ( ) const

overridevirtual

Returns the matrix that is used to transform a 3d scene into a 2d projection. Use this matrix for all regular CPU side projection calculations. Use the matrix returned by getRenderProjectionMatrix() as shader input only.

Returns

camera projection matrix

Implements CameraComponentInstance.

getProperties()

const OrthoCameraProperties& getProperties

(

)

Returns

The planes for this orthographic camera.

getRenderProjectionMatrix()

virtual const glm::mat4& getRenderProjectionMatrix ( ) const

overridevirtual

Returns the matrix that is used to transform a 3d scene in to a 2d projection by the renderer. Vulkan uses a coordinate system where (-1, -1) is in the top left quadrant, instead of the bottom left quadrant. Use this matrix, instead of the one returned by getProjectionMatrix(), when an ortographic projection matrix is required as shader input. For all regular (CPU) related orthographic calculations, use getProjectionMatrix().

Returns

the projection matrix used by the renderer

Implements CameraComponentInstance.

getViewMatrix()

virtual const glm::mat4 getViewMatrix ( ) const

overridevirtual

Returns

The populated view matrix.

Implements CameraComponentInstance.

init()

virtual bool init ( utility::ErrorState &  errorState )

overridevirtual

Initialize this component from its resource

Parameters

errorState

contains the error if initialization fails.

Reimplemented from ComponentInstance.

restoreClipRect()

void restoreClipRect

(

)

Restores the clip rectangle to a unit rectangle, disabling clipping

setClipRect()

void setClipRect

(

const math::Rect &

clipRect

)

Sets the normalized clip rectangle used to clip/crop the camera view

Parameters

clipRect

The clip rectangle.

setMode()

void setMode

(

EOrthoCameraMode

mode

)

Sets the mode (the physical space) in which the orthographic camera is operating.

Parameters

mode	The view mode to operate in.

setProperties()

void setProperties

(

const OrthoCameraProperties &

properties

)

Sets the orthographic camera properties.

Parameters

properties

The new camera properties

setRenderTargetSize()

virtual void setRenderTargetSize ( const glm::ivec2 &  size )

overridevirtual

This implementation extracts the size in pixels of the render target to make sure that the orthographic camera acts in pixel coordinates.

Parameters

size	The size of the render target in pixel coordinates.

Reimplemented from CameraComponentInstance.