osgCloudyDay::CloudScene Class Reference

#include <CloudScene.h>

List of all members.

Public Types
enum	CloudType {   CT_Stratus, CT_AltStratus, CT_StratoCumulusGenerator, CT_Cumulus,   CT_Nimbostratus, CT_Cumolonimbus, CT_AltCumulusGenerator, CT_Quantity }
enum	WC_Uniform {   WCU_LightPos, WCU_TimeOfDay, WCU_Fading, WCU_Density,   WCU_AmbientLight_H0, WCU_AmbientLight_H1, WCU_AmbientLight_T0, WCU_AmbientLight_T1,   WCU_DirectionalColor, WCU_SunLightColor, quantity }

Public Member Functions
	CloudScene ()
	~CloudScene (void)
osg::ref_ptr< osg::Geometry >	InsertCloud (WangCloud *cloud, int layerID)
void	AddCloud (WangCloud *cloud, int layerID)
void	UpdateCloud (WangCloud *cloud, int at)
void	AddLayer (int layerID, int layer)
int	GetType (int layer)
int	GetNumberOfLayers ()
void	Create ()
void	SetFog (Fog *fog)
void	Setup ()
void	SetupAttributes (osg::ref_ptr< osg::StateSet > nodess4)
void	UpdateUniform (int type)
int	GetNumberOfClouds ()
unsigned int	GetNumberOfParticles ()
void	RemoveScreenBillBoard ()
osg::Vec3	CalculatePosition (int m_type)
osg::Geometry *	createSphere (osg::Vec3 middlePoint, float radius, int vpr)
osg::ref_ptr< osg::Geometry >	CreateBBForCloud (int cloudID)
unsigned int	GetLayer (int index)

Static Public Member Functions
static void	DeleteStates ()
static void	LoadingTexture ()
static void	LoadingShader ()
static void	SetStates (CloudLayerState *state)
static CloudLayerState *	GetStates ()
static void	Initialize ()
static void	CreateCloudCamera ()
static osg::ref_ptr< osg::Camera >	GetCloudCamera ()

Public Attributes
CloudLayerUpdate *	cloud_layer_update
osg::ref_ptr< osg::Uniform >	project_lightuniform
osg::ref_ptr< osg::Uniform >	modelViewMatrix_lightuniform
osg::ref_ptr< osg::Uniform >	viewMatrix_lightuniform
osg::ref_ptr< osg::Uniform >	viewMatrixInv_lightuniform
osg::ref_ptr< osg::Uniform >	projectuniform
osg::ref_ptr< osg::Uniform >	modelViewMatrixuniform
osg::ref_ptr< osg::Uniform >	viewMatrixuniform
osg::ref_ptr< osg::Uniform >	viewMatrixInvuniform
osg::ref_ptr< osg::Geode >	quadBillBoard
osg::ref_ptr< osg::StateSet >	nodess4
osg::ref_ptr< osg::Vec3Array >	m_cloudcenter
osg::ref_ptr< osg::IntArray >	m_start_indices
bool	setup_attribute
osg::ref_ptr< osg::Geode >	geode
osg::ref_ptr < osgCloudyDay::CloudGeometry >	geometry
int	numClouds
std::vector< WangCloud * >	m_clouds

Static Public Attributes
static float	timeOfDay = 0.75
static float	fading = 0.0
static float	dens = 1.0
static osg::Vec3	ambientLight_h0 = osg::Vec3(0.f, 0.f, 0.f)
static osg::Vec3	ambientLight_h1 = osg::Vec3(1.f, 1.f, 1.f)
static osg::Vec3	ambientLight_t0 = osg::Vec3(0.f, 0.f, 0.f)
static osg::Vec3	ambientLight_t1 = osg::Vec3(1.f, 1.f, 1.f)
static osg::Matrix3	directionalColors = osg::Matrix3(0.4, 0.4, 0.4, 0.8, 0.8, 0.8, 0.9, 0.9, 0.9)
static float	time = 0.f
static osg::Vec3	sunLightColor = osg::Vec3(1.f, 1.f, 1.f)
static osg::ref_ptr< osg::Program >	cloudShadowMapProg
static osg::ref_ptr< osg::Program >	cloudBlurHoriProg
static osg::ref_ptr< osg::Program >	cloudBlurVertProg
static osg::ref_ptr< osg::Program >	cloudBlurLinearHoriProg
static osg::ref_ptr< osg::Program >	cloudBlurLinearVertProg
static osg::ref_ptr< osg::Program >	cloudProg
static osg::ref_ptr< osg::Program >	cloudShadowProg
static osg::ref_ptr < osg::Texture2D >	tex_clouds
static osg::FrameBufferObject *	fbo_viewer
static osg::FrameBufferObject *	fbo_light
static bool	m_backtofront = true
static bool	m_backtofront_old = true
static osg::ref_ptr < osg::Texture2D >	fbo_light_texture
static osg::ref_ptr < osg::Texture2D >	fbo_cloud_texture
static osg::FrameBufferObject *	fbo_cloud_viewer
static osg::FrameBufferObject *	fbo_shadow
static osg::FrameBufferObject *	fbo_vert_linear_blur
static osg::FrameBufferObject *	fbo_hori_linear_blur
static osg::FrameBufferObject *	fbo_vert_blur
static osg::FrameBufferObject *	fbo_hori_blur
static osg::FrameBufferObject *	fbo_hori_blur2

Protected Member Functions
void	AddDrawElementsPoint (std::vector< unsigned int > index, unsigned int start, unsigned int count, int k)
void	InsertScreenBillBoard ()
float	frand ()
osg::Vec2	GetGaussianDistributedRandomNumber (osg::Vec2 m, float v)
void	GenerateRandomSequence (int num_elements)

Protected Attributes
osg::Vec2	m_numOfClouds
std::vector< int >	sequence
unsigned int	m_num_indices
std::vector< unsigned int >	m_layerToNumberCloud
std::vector< unsigned int >	m_layerToCloudType
std::vector< unsigned int >	m_layerToCloudLayerID
osg::ref_ptr< osg::IntArray >	m_startLayerIndex
osg::ref_ptr< osg::Vec3Array >	m_vertices
osg::ref_ptr< osg::Vec3Array >	m_bb_min
osg::ref_ptr< osg::Vec3Array >	m_bb_max
osg::ref_ptr< osg::Vec4Array >	m_rotation
osg::ref_ptr< osg::Vec4Array >	m_center
osg::ref_ptr< osg::Vec4Array >	m_ids
osg::ref_ptr< osg::Vec4Array >	m_box_centers
osg::ref_ptr< osg::Vec4Array >	m_color
osg::ref_ptr< osg::IntArray >	m_numPrimitiveArrays
std::map< int, std::string >	m_uniforms
osg::ref_ptr< osg::Vec3Array >	m_ambientlight_h
osg::ref_ptr< osg::Vec3Array >	m_ambientlight_t
osg::ref_ptr< osg::Vec3Array >	m_diffuselight
Fog *	m_fog

Static Protected Attributes
static osg::ref_ptr< osg::Camera >	m_lightCloudCamera
static CloudLayerState *	m_CloudLayerState = new osgCloudyDay::CloudLayerState()

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Detailed Description

Class, which is used to manage the 3D clouds

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Member Enumeration Documentation

enum osgCloudyDay::CloudScene::CloudType

Cloud types

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Constructor & Destructor Documentation

osgCloudyDay::CloudScene::CloudScene

(

)

Constructor

osgCloudyDay::CloudScene::~CloudScene

(

void

)

Deconstructor

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Member Function Documentation

void osgCloudyDay::CloudScene::AddCloud	(	WangCloud *	cloud,
		int	layerID
	)

Adds a clouds

Parameters:

cloud	cloud object
layerID	lalyer id

void osgCloudyDay::CloudScene::AddDrawElementsPoint ( std::vector< unsigned int >  index, unsigned int  start, unsigned int  count, int  k  )

protected

Adds indices to the index array

Parameters:

index	indices to add
start	offfset, where to add
count	number of indices to add

void osgCloudyDay::CloudScene::AddLayer	(	int	layerID,
		int	layer
	)

Adds a layer

Parameters:

layerID	layerID
layer	layer

osg::Vec3 osgCloudyDay::CloudScene::CalculatePosition

(

int

m_type

)

Method calculates the position

Parameters:

m_type

cloud type

Returns:

positon

void osgCloudyDay::CloudScene::Create

(

)

Creates the clouds

osg::ref_ptr< osg::Geometry > osgCloudyDay::CloudScene::CreateBBForCloud

(

int

cloudID

)

Calcualtes the bounding boxes of the cloud

Parameters:

cloudID

cloud id

Returns:

geometry with the calculates bounding boxes

void osgCloudyDay::CloudScene::CreateCloudCamera ( )

static

Method to create a cloud camera

osg::Geometry * osgCloudyDay::CloudScene::createSphere	(	osg::Vec3	middlePoint,
		float	radius,
		int	vpr
	)

Calcualtes the bounding boxes of the cloud

Parameters:

middlePoint	location of the sphere
radius	radius of the sphere
vpr	vpr

Returns:

geometry with the bounding spheres

void osgCloudyDay::CloudScene::DeleteStates ( )

static

Method to delete the states

void osgCloudyDay::CloudScene::GenerateRandomSequence ( int  num_elements )

protected

Method to generate a random sequence

Parameters:

num_elements

number of random values

osg::ref_ptr< osg::Camera > osgCloudyDay::CloudScene::GetCloudCamera ( )

static

Method, which returns a cloud camera

Returns:

cloud camera

osg::Vec2 osgCloudyDay::CloudScene::GetGaussianDistributedRandomNumber ( osg::Vec2  m, float  v  )

protected

Get a random number, which follows a Gaussian function

Parameters:

m	mean value of the gaussian function
v	variance value of the gaussian function

Returns:

random number, distributed after a Gaussian function

unsigned int osgCloudyDay::CloudScene::GetLayer

(

int

index

)

Returns a layer

Returns:

layer

int osgCloudyDay::CloudScene::GetNumberOfClouds

(

)

Returns the number of clouds

Returns:

number of clousd

int osgCloudyDay::CloudScene::GetNumberOfLayers

(

)

Returns the number of layers

Returns:

number of layers

unsigned int osgCloudyDay::CloudScene::GetNumberOfParticles

(

)

Returns the nubmer of particles

Returns:

number of particles

osgCloudyDay::CloudLayerState * osgCloudyDay::CloudScene::GetStates ( )

static

Method, which returns the states of the cloud layer

Returns:

cloud layer states

int osgCloudyDay::CloudScene::GetType

(

int

layer

)

Returns the type of a layer

Parameters:

layer

id of a layer

Returns:

type of a layer

void osgCloudyDay::CloudScene::Initialize ( )

static

Initialize Method

osg::ref_ptr< osg::Geometry > osgCloudyDay::CloudScene::InsertCloud	(	WangCloud *	cloud,
		int	layerID
	)

Inserts a cloud

Parameters:

cloud	cloud object
layerID	lalyer id

void osgCloudyDay::CloudScene::InsertScreenBillBoard ( )

protected

Insert a billboard at the end of the object

void osgCloudyDay::CloudScene::LoadingShader ( )

static

Loads the shader

void osgCloudyDay::CloudScene::LoadingTexture ( )

static

LoadingTexture loads the cloud texture

void osgCloudyDay::CloudScene::RemoveScreenBillBoard

(

)

Method to reomove the screen billboard

void osgCloudyDay::CloudScene::SetFog

(

osgCloudyDay::Fog *

fog

)

Adds a fog

Parameters:

fog	fog object

void osgCloudyDay::CloudScene::SetStates ( CloudLayerState *  state )

static

Method to set the states

Parameters:

state

states of the cloud layer

void osgCloudyDay::CloudScene::Setup

(

)

Sets the OpenGL states

void osgCloudyDay::CloudScene::SetupAttributes

(

osg::ref_ptr< osg::StateSet >

nodess4

)

Sets OpenGL States

void osgCloudyDay::CloudScene::UpdateCloud	(	WangCloud *	cloud,
		int	at
	)

Updates the clouds at runtime

Parameters:

cloud	cloud object
at	lalyer id

void osgCloudyDay::CloudScene::UpdateUniform

(

int

type

)

This method updates the uniforms of the shader

Parameters:

type	uniform, which should updated

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

• WangCloud/CloudScene.h
• WangCloud/CloudScene.cpp