A small collection of noise routines for LIC. More...

#include <vtkSurfaceLICHelper.h>

Collaboration diagram for vtkSurfaceLICHelper:

Public Member Functions
	vtkSurfaceLICHelper ()

	~vtkSurfaceLICHelper ()

void	ReleaseGraphicsResources (vtkWindow *win)
	Free textures and shader programs we're holding a reference to.

void	ClearTextures ()
	Free textures we're holding a reference to.

void	AllocateTextures (vtkOpenGLRenderWindow context, int viewsize)
	Allocate textures.

void	AllocateTexture (vtkOpenGLRenderWindow context, int viewsize, vtkSmartPointer< vtkTextureObject > &tex, int filter=vtkTextureObject::Nearest)
	Allocate a size texture, store in the given smart pointer.

void	AllocateDepthTexture (vtkOpenGLRenderWindow context, int viewsize, vtkSmartPointer< vtkTextureObject > &tex)
	Allocate a size texture, store in the given smart pointer.

void	Updated ()
	After LIC has been computed reset/clean internal state.

void	UpdateAll ()
	Force all stages to re-execute.

void	ViewportQuadPoints (const vtkPixelExtent &viewportExt, GLfloat *quadpts)
	Convert a viewport to a bounding box and it's texture coordinates for a screen size texture.

void	ViewportQuadTextureCoords (const vtkPixelExtent &viewExt, const vtkPixelExtent &viewportExt, GLfloat *tcoords)
	Convert a viewport to a bounding box and it's texture coordinates for a screen size texture.

void	RenderQuad (const vtkPixelExtent &viewExt, const vtkPixelExtent &viewportExt, vtkOpenGLHelper *cbo)
	Render a quad (to trigger a shader to run)

int	idx (int row, int col)
	Compute the index into the 4x4 OpenGL ordered matrix.

bool	VisibilityTest (double ndcBBox[24])
	given a axes aligned bounding box in normalized device coordinates test for view frustum visibility.

bool	ProjectBounds (double PMV[16], int viewsize[2], double bounds[6], vtkPixelExtent &screenExt)
	Given world space bounds, compute bounding boxes in clip and normalized device coordinates and perform view frustum visibility test.

int	ProjectBounds (vtkRenderer ren, vtkActor actor, vtkDataObject *dobj, int viewsize[2], vtkPixelExtent &dataExt, std::deque< vtkPixelExtent > &blockExts)
	Compute screen space extents for each block in the input dataset and for the entire dataset.

void	GetPixelBounds (float *rgba, int ni, vtkPixelExtent &ext)
	Shrink an extent to tightly bound non-zero values.

void	GetPixelBounds (float *rgba, int ni, std::deque< vtkPixelExtent > &blockExts)
	Shrink a set of extents to tightly bound non-zero values cull extent if it's empty.


void	ViewportQuadTextureCoords (GLfloat *tcoords)
	Convert viewport to texture coordinates.


void	ViewQuadPoints (GLfloat *quadpts)
	Convert the entire view to a bounding box and it's texture coordinates for a screen size texture.


void	ViewQuadTextureCoords (GLfloat *tcoords)
	Convert the entire view to a bounding box and it's texture coordinates for a screen size texture.

Static Public Member Functions
static bool	IsSupported (vtkOpenGLRenderWindow *context)
	Check for OpenGL support.

static void	StreamingFindMinMax (vtkOpenGLFramebufferObject *fbo, std::deque< vtkPixelExtent > &blockExts, float &min, float &max)

Public Attributes
vtkSmartPointer< vtkImageData >	Noise

vtkSmartPointer< vtkTextureObject >	NoiseImage

vtkSmartPointer< vtkTextureObject >	DepthImage

vtkSmartPointer< vtkTextureObject >	GeometryImage

vtkSmartPointer< vtkTextureObject >	VectorImage

vtkSmartPointer< vtkTextureObject >	CompositeVectorImage

vtkSmartPointer< vtkTextureObject >	MaskVectorImage

vtkSmartPointer< vtkTextureObject >	CompositeMaskVectorImage

vtkSmartPointer< vtkTextureObject >	LICImage

vtkSmartPointer< vtkTextureObject >	RGBColorImage

vtkSmartPointer< vtkTextureObject >	HSLColorImage

bool	HasVectors

std::deque< vtkPixelExtent >	BlockExts

vtkOpenGLHelper *	ColorEnhancePass

vtkOpenGLHelper *	CopyPass

vtkOpenGLHelper *	ColorPass

int	Viewsize [2]

vtkSmartPointer< vtkSurfaceLICComposite >	Compositor

vtkSmartPointer< vtkOpenGLFramebufferObject >	FBO

vtkSmartPointer< vtkLineIntegralConvolution2D >	LICer

vtkPainterCommunicator *	Communicator

vtkPixelExtent	DataSetExt

vtkWeakPointer< vtkOpenGLRenderWindow >	Context

bool	ContextNeedsUpdate

bool	CommunicatorNeedsUpdate

Detailed Description

A small collection of noise routines for LIC.

Definition at line 32 of file vtkSurfaceLICHelper.h.

Constructor & Destructor Documentation

◆ vtkSurfaceLICHelper()

vtkSurfaceLICHelper::vtkSurfaceLICHelper ( )

◆ ~vtkSurfaceLICHelper()

vtkSurfaceLICHelper::~vtkSurfaceLICHelper ( )

Member Function Documentation

◆ IsSupported()

static bool vtkSurfaceLICHelper::IsSupported ( vtkOpenGLRenderWindow * context )

static

Check for OpenGL support.

◆ ReleaseGraphicsResources()

void vtkSurfaceLICHelper::ReleaseGraphicsResources ( vtkWindow * win )

Free textures and shader programs we're holding a reference to.

◆ ClearTextures()

void vtkSurfaceLICHelper::ClearTextures ( )

Free textures we're holding a reference to.

◆ AllocateTextures()

void vtkSurfaceLICHelper::AllocateTextures	(	vtkOpenGLRenderWindow *	context,
		int *	viewsize
	)

Allocate textures.

◆ AllocateTexture()

void vtkSurfaceLICHelper::AllocateTexture	(	vtkOpenGLRenderWindow *	context,
		int *	viewsize,
		vtkSmartPointer< vtkTextureObject > &	tex,
		int	filter = `vtkTextureObject::Nearest`
	)

Allocate a size texture, store in the given smart pointer.

◆ AllocateDepthTexture()

void vtkSurfaceLICHelper::AllocateDepthTexture	(	vtkOpenGLRenderWindow *	context,
		int *	viewsize,
		vtkSmartPointer< vtkTextureObject > &	tex
	)

Allocate a size texture, store in the given smart pointer.

◆ Updated()

void vtkSurfaceLICHelper::Updated ( )

After LIC has been computed reset/clean internal state.

◆ UpdateAll()

void vtkSurfaceLICHelper::UpdateAll ( )

Force all stages to re-execute.

Necessary if the context or communicator changes.

◆ ViewportQuadTextureCoords() [1/2]

void vtkSurfaceLICHelper::ViewportQuadTextureCoords ( GLfloat * tcoords )

inline

Convert viewport to texture coordinates.

Definition at line 85 of file vtkSurfaceLICHelper.h.

◆ ViewportQuadPoints()

void vtkSurfaceLICHelper::ViewportQuadPoints	(	const vtkPixelExtent &	viewportExt,
		GLfloat *	quadpts
	)

inline

Convert a viewport to a bounding box and it's texture coordinates for a screen size texture.

Definition at line 96 of file vtkSurfaceLICHelper.h.

◆ ViewportQuadTextureCoords() [2/2]

void vtkSurfaceLICHelper::ViewportQuadTextureCoords	(	const vtkPixelExtent &	viewExt,
		const vtkPixelExtent &	viewportExt,
		GLfloat *	tcoords
	)

Convert a viewport to a bounding box and it's texture coordinates for a screen size texture.

◆ ViewQuadPoints()

void vtkSurfaceLICHelper::ViewQuadPoints ( GLfloat * quadpts )

inline

Convert the entire view to a bounding box and it's texture coordinates for a screen size texture.

Definition at line 113 of file vtkSurfaceLICHelper.h.

◆ ViewQuadTextureCoords()

void vtkSurfaceLICHelper::ViewQuadTextureCoords ( GLfloat * tcoords )

inline

Convert the entire view to a bounding box and it's texture coordinates for a screen size texture.

Definition at line 125 of file vtkSurfaceLICHelper.h.

◆ RenderQuad()

void vtkSurfaceLICHelper::RenderQuad	(	const vtkPixelExtent &	viewExt,
		const vtkPixelExtent &	viewportExt,
		vtkOpenGLHelper *	cbo
	)

Render a quad (to trigger a shader to run)

◆ idx()

int vtkSurfaceLICHelper::idx	(	int	row,
		int	col
	)

inline

Compute the index into the 4x4 OpenGL ordered matrix.

Definition at line 141 of file vtkSurfaceLICHelper.h.

◆ VisibilityTest()

bool vtkSurfaceLICHelper::VisibilityTest ( double ndcBBox[24] )

given a axes aligned bounding box in normalized device coordinates test for view frustum visibility.

if all points are outside one of the view frustum planes then this box is not visible. we might have false positive where more than one clip plane intersects the box.

◆ ProjectBounds() [1/2]

bool vtkSurfaceLICHelper::ProjectBounds	(	double	PMV[16],
		int	viewsize[2],
		double	bounds[6],
		vtkPixelExtent &	screenExt
	)

Given world space bounds, compute bounding boxes in clip and normalized device coordinates and perform view frustum visibility test.

return true if the bounds are visible. If so the passed in extent object is initialized with the corresponding screen space extents.

◆ ProjectBounds() [2/2]

int vtkSurfaceLICHelper::ProjectBounds	(	vtkRenderer *	ren,
		vtkActor *	actor,
		vtkDataObject *	dobj,
		int	viewsize[2],
		vtkPixelExtent &	dataExt,
		std::deque< vtkPixelExtent > &	blockExts
	)

Compute screen space extents for each block in the input dataset and for the entire dataset.

Only visible blocks are used in the computations.

◆ GetPixelBounds() [1/2]

void vtkSurfaceLICHelper::GetPixelBounds	(	float *	rgba,
		int	ni,
		vtkPixelExtent &	ext
	)

Shrink an extent to tightly bound non-zero values.

◆ GetPixelBounds() [2/2]

void vtkSurfaceLICHelper::GetPixelBounds	(	float *	rgba,
		int	ni,
		std::deque< vtkPixelExtent > &	blockExts
	)

Shrink a set of extents to tightly bound non-zero values cull extent if it's empty.

◆ StreamingFindMinMax()

static void vtkSurfaceLICHelper::StreamingFindMinMax	(	vtkOpenGLFramebufferObject *	fbo,
		std::deque< vtkPixelExtent > &	blockExts,
		float &	min,
		float &	max
	)

static

Member Data Documentation

◆ Noise

vtkSmartPointer<vtkImageData> vtkSurfaceLICHelper::Noise

Definition at line 187 of file vtkSurfaceLICHelper.h.

◆ NoiseImage

vtkSmartPointer<vtkTextureObject> vtkSurfaceLICHelper::NoiseImage

Definition at line 188 of file vtkSurfaceLICHelper.h.

◆ DepthImage

vtkSmartPointer<vtkTextureObject> vtkSurfaceLICHelper::DepthImage

Definition at line 189 of file vtkSurfaceLICHelper.h.

◆ GeometryImage

vtkSmartPointer<vtkTextureObject> vtkSurfaceLICHelper::GeometryImage

Definition at line 190 of file vtkSurfaceLICHelper.h.

◆ VectorImage

vtkSmartPointer<vtkTextureObject> vtkSurfaceLICHelper::VectorImage

Definition at line 191 of file vtkSurfaceLICHelper.h.

◆ CompositeVectorImage

vtkSmartPointer<vtkTextureObject> vtkSurfaceLICHelper::CompositeVectorImage

Definition at line 192 of file vtkSurfaceLICHelper.h.

◆ MaskVectorImage

vtkSmartPointer<vtkTextureObject> vtkSurfaceLICHelper::MaskVectorImage

Definition at line 193 of file vtkSurfaceLICHelper.h.

◆ CompositeMaskVectorImage

vtkSmartPointer<vtkTextureObject> vtkSurfaceLICHelper::CompositeMaskVectorImage

Definition at line 194 of file vtkSurfaceLICHelper.h.

◆ LICImage

vtkSmartPointer<vtkTextureObject> vtkSurfaceLICHelper::LICImage

Definition at line 195 of file vtkSurfaceLICHelper.h.

◆ RGBColorImage

vtkSmartPointer<vtkTextureObject> vtkSurfaceLICHelper::RGBColorImage

Definition at line 196 of file vtkSurfaceLICHelper.h.

◆ HSLColorImage

vtkSmartPointer<vtkTextureObject> vtkSurfaceLICHelper::HSLColorImage

Definition at line 197 of file vtkSurfaceLICHelper.h.

◆ HasVectors

bool vtkSurfaceLICHelper::HasVectors

Definition at line 199 of file vtkSurfaceLICHelper.h.

◆ BlockExts

std::deque<vtkPixelExtent> vtkSurfaceLICHelper::BlockExts

Definition at line 200 of file vtkSurfaceLICHelper.h.

◆ ColorEnhancePass

vtkOpenGLHelper* vtkSurfaceLICHelper::ColorEnhancePass

Definition at line 202 of file vtkSurfaceLICHelper.h.

◆ CopyPass

vtkOpenGLHelper* vtkSurfaceLICHelper::CopyPass

Definition at line 203 of file vtkSurfaceLICHelper.h.

◆ ColorPass

vtkOpenGLHelper* vtkSurfaceLICHelper::ColorPass

Definition at line 204 of file vtkSurfaceLICHelper.h.

◆ Viewsize

int vtkSurfaceLICHelper::Viewsize[2]

Definition at line 206 of file vtkSurfaceLICHelper.h.

◆ Compositor

vtkSmartPointer<vtkSurfaceLICComposite> vtkSurfaceLICHelper::Compositor

Definition at line 207 of file vtkSurfaceLICHelper.h.

◆ FBO

vtkSmartPointer<vtkOpenGLFramebufferObject> vtkSurfaceLICHelper::FBO

Definition at line 208 of file vtkSurfaceLICHelper.h.

◆ LICer

vtkSmartPointer<vtkLineIntegralConvolution2D> vtkSurfaceLICHelper::LICer

Definition at line 210 of file vtkSurfaceLICHelper.h.

◆ Communicator

vtkPainterCommunicator* vtkSurfaceLICHelper::Communicator

Definition at line 211 of file vtkSurfaceLICHelper.h.

◆ DataSetExt

vtkPixelExtent vtkSurfaceLICHelper::DataSetExt

Definition at line 212 of file vtkSurfaceLICHelper.h.

◆ Context

vtkWeakPointer<vtkOpenGLRenderWindow> vtkSurfaceLICHelper::Context

Definition at line 214 of file vtkSurfaceLICHelper.h.

◆ ContextNeedsUpdate

bool vtkSurfaceLICHelper::ContextNeedsUpdate

Definition at line 216 of file vtkSurfaceLICHelper.h.

◆ CommunicatorNeedsUpdate

bool vtkSurfaceLICHelper::CommunicatorNeedsUpdate

Definition at line 217 of file vtkSurfaceLICHelper.h.

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

Rendering/LICOpenGL2/vtkSurfaceLICHelper.h

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ vtkSurfaceLICHelper()

◆ ~vtkSurfaceLICHelper()

Member Function Documentation

◆ IsSupported()

◆ ReleaseGraphicsResources()

◆ ClearTextures()

◆ AllocateTextures()

◆ AllocateTexture()

◆ AllocateDepthTexture()

◆ Updated()

◆ UpdateAll()

◆ ViewportQuadTextureCoords() [1/2]

◆ ViewportQuadPoints()

◆ ViewportQuadTextureCoords() [2/2]

◆ ViewQuadPoints()

◆ ViewQuadTextureCoords()

◆ RenderQuad()

◆ idx()

◆ VisibilityTest()

◆ ProjectBounds() [1/2]

◆ ProjectBounds() [2/2]

◆ GetPixelBounds() [1/2]

◆ GetPixelBounds() [2/2]

◆ StreamingFindMinMax()

Member Data Documentation

◆ Noise

◆ NoiseImage

◆ DepthImage

◆ GeometryImage

◆ VectorImage

◆ CompositeVectorImage

◆ MaskVectorImage

◆ CompositeMaskVectorImage

◆ LICImage

◆ RGBColorImage

◆ HSLColorImage

◆ HasVectors

◆ BlockExts

◆ ColorEnhancePass

◆ CopyPass

◆ ColorPass

◆ Viewsize

◆ Compositor

◆ FBO

◆ LICer

◆ Communicator

◆ DataSetExt

◆ Context

◆ ContextNeedsUpdate

◆ CommunicatorNeedsUpdate