Blam::Rendering Namespace Reference

Namespace for things relating to rendering. More...

Namespaces
	Lights
	Materials
	Namespace containing functions for interacting with materials.
	Models
	Textures
	Namespace containing functions for interacting with textures.
	Utils
	Miscellaneous utility functions for use with OGRE.

Functions
BLAM bool	Initialize ()
	Initializes the OGRE rendering library. More...
BLAM void	RenderLoop ()
	Function to handle the render loop. More...
BLAM void	RenderThread ()
	Function used to handle the render thread. More...
BLAM void	PauseRenderThread ()
	Pauses the render thread. More...
BLAM void	ResumeRenderThread ()
	Resumes the render thread. More...
BLAM void	Shutdown ()
	Shuts down OGRE and cleans up any memory used by it. More...
BLAM void	ProcessSDLEvents (SDL_Event *event)
	Function used to allow OGRE to handle SDL events. More...
BLAM Demo::GraphicsSystem *	GetGraphicsSystem ()
	Retrieves the graphics system used by OGRE. More...
BLAM void	HandleWindowReisze (int width, int height)
	Instructs OGRE to handle a window resize. More...
BLAM int	GetRenderWidth ()
	Retrieves the current width of the OGRE viewport. More...
BLAM int	GetRenderHeight ()
	Retrieves the current height of the OGRE viewport. More...
BLAM Ogre::Window *	GetRenderWindow ()
	Retrieves the primary OGRE rendering window. More...
BLAM double	GetDeltaTime ()
	Retrieves delta time that has passed since the previous frame was completed. More...
BLAM void	TakeScreenshot ()
	Instructs OGRE to save a screenshot on the next frame. More...
BLAM void	WriteScreenshot ()
	Saves a screenshot of the current frame to a file. More...
BLAM Ogre::SceneManager *	Get2DSceneManager ()
	Retrieves the scene manager used to handle 2D rendering. More...
BLAM Ogre::Camera *	Get2DCamera ()
	Retrieves the camera used to handle 2D rendering. More...
BLAM void	DisplayBasicCrashScreen (std::string additional_info="")
	Displays a basic crash screen, with an optional message. More...
BLAM void	DisplayDetailedCrashScreen (std::string expression, std::string file, int line, std::string message)
	Displays a detailed crash screen. More...
BLAM bool	GetImGuiHiddenState ()
	Checks whether ImGUI is currently hidden or not. More...
BLAM BlamVector3	GetMousePosition3D ()
BLAM BlamVector2	GetScreenPointFrom3DPoint (BlamVector3 point)
BLAM BlamVector3	GetGizmoMousePosition3D ()
BLAM std::vector< BlamWorldObject * >	RaycastScreen (int screen_x, int screen_y, bool sort_by_distance=true, uint16_t max_results=0U, BlamQueryFlags query_flags=BlamQueryFlags::QF_EXCLUDE_GIZMOS)
BLAM std::vector< BlamWorldObject * >	RaycastScreenNormalized (float screen_normalized_x, float screen_normalized_y, bool sort_by_distance=true, uint16_t max_results=0U, BlamQueryFlags query_flags=BlamQueryFlags::QF_EXCLUDE_GIZMOS)
BLAM std::vector< BlamWorldObject * >	Raycast (BlamVector3 origin, BlamVector3 direction, bool sort_by_distance=true, uint16_t max_results=0U, BlamQueryFlags query_flags=BlamQueryFlags::QF_EXCLUDE_GIZMOS)

Detailed Description

Namespace for things relating to rendering.

Function Documentation

DisplayBasicCrashScreen()

void Blam::Rendering::DisplayBasicCrashScreen

(

std::string

additional_info = ""

)

Displays a basic crash screen, with an optional message.

Parameters

additional_info

- Additional information to display on the crash screen.

Todo:

Have this actually halt the engine - as of right now, the engine actually keeps running in the background.

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DisplayDetailedCrashScreen()

void Blam::Rendering::DisplayDetailedCrashScreen	(	std::string	expression,
		std::string	file,
		int	line,
		std::string	message
	)

Displays a detailed crash screen.

Parameters

expression	- The expression that caused the crash (ie, an assertion failure).
file	- The file that caused the crash.
line	- The line number containing the code that caused the crash.
message	- A message to display to the user alongisde the other information.

Todo:

Have this actually halt the engine - as of right now, the engine actually keeps running in the background.

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Get2DCamera()

Ogre::Camera * Blam::Rendering::Get2DCamera

(

)

Retrieves the camera used to handle 2D rendering.

Returns

Pointer to the 2D camera.

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Get2DSceneManager()

Ogre::SceneManager * Blam::Rendering::Get2DSceneManager

(

)

Retrieves the scene manager used to handle 2D rendering.

Returns

Pointer to the 2D scene manager.

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GetDeltaTime()

double Blam::Rendering::GetDeltaTime

(

)

Retrieves delta time that has passed since the previous frame was completed.

Returns

The frame delta time.

GetGizmoMousePosition3D()

BlamVector3 Blam::Rendering::GetGizmoMousePosition3D

(

)

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GetGraphicsSystem()

Demo::GraphicsSystem * Blam::Rendering::GetGraphicsSystem

(

)

Retrieves the graphics system used by OGRE.

Returns

The graphics system used by OGRE.

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GetImGuiHiddenState()

bool Blam::Rendering::GetImGuiHiddenState

(

)

Checks whether ImGUI is currently hidden or not.

Returns

true if ImGUI is currently hidden, otherwise returns false.

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GetMousePosition3D()

BlamVector3 Blam::Rendering::GetMousePosition3D

(

)

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GetRenderHeight()

int Blam::Rendering::GetRenderHeight

(

)

Retrieves the current height of the OGRE viewport.

Returns

The height of the OGRE viewport, in pixels.

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GetRenderWidth()

int Blam::Rendering::GetRenderWidth

(

)

Retrieves the current width of the OGRE viewport.

Returns

The width of the OGRE viewport, in pixels.

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GetRenderWindow()

Ogre::Window * Blam::Rendering::GetRenderWindow

(

)

Retrieves the primary OGRE rendering window.

Returns

The primary OGRE rendering window.

GetScreenPointFrom3DPoint()

BlamVector2 Blam::Rendering::GetScreenPointFrom3DPoint

(

BlamVector3

point

)

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HandleWindowReisze()

void Blam::Rendering::HandleWindowReisze	(	int	width,
		int	height
	)

Instructs OGRE to handle a window resize.

This should typically only be called when the main application window is resized.

Parameters

width	- The new width of the window.
height	- The new height of the window.

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Initialize()

bool Blam::Rendering::Initialize

(

)

Initializes the OGRE rendering library.

Returns

true if OGRE was successfully initialized, otherwise returns false. If this returns false, engine startup should be aborted.

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PauseRenderThread()

void Blam::Rendering::PauseRenderThread

(

)

Pauses the render thread.

This function will halt the render thread and wait for the current frame render to pause. This can be used in cases where certain operations (such as loading render models) need to happen while OGRE is not currently rendering a frame.

When finished, ResumeRenderThread should be called to resume rendering - otherwise, rendering may be permanently paused.

ProcessSDLEvents()

void Blam::Rendering::ProcessSDLEvents

(

SDL_Event *

event

)

Function used to allow OGRE to handle SDL events.

Parameters

event

- The SDL event that was fired.

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Raycast()

std::vector< BlamWorldObject * > Blam::Rendering::Raycast	(	BlamVector3	origin,
		BlamVector3	direction,
		bool	sort_by_distance = true,
		uint16_t	max_results = 0U,
		BlamQueryFlags	query_flags = BlamQueryFlags::QF_EXCLUDE_GIZMOS
	)

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RaycastScreen()

std::vector< BlamWorldObject * > Blam::Rendering::RaycastScreen	(	int	screen_x,
		int	screen_y,
		bool	sort_by_distance = true,
		uint16_t	max_results = 0U,
		BlamQueryFlags	query_flags = BlamQueryFlags::QF_EXCLUDE_GIZMOS
	)

Todo:

Document

Note

Must be called from rendering thread.

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RaycastScreenNormalized()

std::vector< BlamWorldObject * > Blam::Rendering::RaycastScreenNormalized	(	float	screen_normalized_x,
		float	screen_normalized_y,
		bool	sort_by_distance = true,
		uint16_t	max_results = 0U,
		BlamQueryFlags	query_flags = BlamQueryFlags::QF_EXCLUDE_GIZMOS
	)

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RenderLoop()

void Blam::Rendering::RenderLoop

(

)

Function to handle the render loop.

Should be called each frame.

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RenderThread()

void Blam::Rendering::RenderThread

(

)

Function used to handle the render thread.

Note

This is a blocking function, intended only for use as part of the rendering thread.

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ResumeRenderThread()

void Blam::Rendering::ResumeRenderThread

(

)

Resumes the render thread.

Shutdown()

void Blam::Rendering::Shutdown

(

)

Shuts down OGRE and cleans up any memory used by it.

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TakeScreenshot()

void Blam::Rendering::TakeScreenshot

(

)

Instructs OGRE to save a screenshot on the next frame.

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WriteScreenshot()

void Blam::Rendering::WriteScreenshot

(

)

Saves a screenshot of the current frame to a file.

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