OpenGL mapper for image slice display. More...

#include <vtkOpenGLImageSliceMapper.h>

Inheritance diagram for vtkOpenGLImageSliceMapper:

Collaboration diagram for vtkOpenGLImageSliceMapper:

Public Types
typedef vtkImageSliceMapper	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkOpenGLImageSliceMapper *	NewInstance () const
virtual void	PrintSelf (ostream &os, vtkIndent indent)
void	Render (vtkRenderer ren, vtkImageSlice prop)
void	ReleaseGraphicsResources (vtkWindow *)
Static Public Member Functions
static vtkOpenGLImageSliceMapper *	New ()
static int	IsTypeOf (const char *type)
static vtkOpenGLImageSliceMapper *	SafeDownCast (vtkObjectBase *o)
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkOpenGLImageSliceMapper ()
	~vtkOpenGLImageSliceMapper ()
void	RenderPolygon (vtkPoints *points, const int extent[6], bool textured)
void	BindFragmentProgram (vtkRenderer ren, vtkImageProperty property)
vtkStdString	BuildFragmentProgram (vtkImageProperty *property)
bool	TextureSizeOK (const int size[2])
void	CheckOpenGLCapabilities (vtkOpenGLRenderWindow *renWin)

void	RenderColorAndLighting (double red, double green, double blue, double alpha, double ambient, double diffuse)

void	RecursiveRenderTexturedPolygon (vtkRenderer ren, vtkImageProperty property, vtkImageData *image, int extent[6], bool recursive)

void	RenderTexturedPolygon (vtkRenderer ren, vtkImageProperty property, vtkImageData *image, int extent[6], bool recursive)

void	RenderBackground (vtkPoints *points, const int extent[6], bool textured)

void	ComputeTextureSize (const int extent[6], int &xdim, int &ydim, int imageSize[2], int textureSize[2])
Protected Attributes
long	TextureIndex
long	BackgroundTextureIndex
long	FragmentShaderIndex
vtkRenderWindow *	RenderWindow
int	TextureSize [2]
int	TextureBytesPerPixel
int	LastOrientation
int	LastSliceNumber
vtkTimeStamp	LoadTime
int	LoadCount
bool	UsePowerOfTwoTextures
bool	UseClampToEdge
bool	UseFragmentProgram

Detailed Description

OpenGL mapper for image slice display.

vtkOpenGLImageSliceMapper is a concrete implementation of the abstract class vtkImageSliceMapper that interfaces to the OpenGL library.

Thanks:: Thanks to David Gobbi at the Seaman Family MR Centre and Dept. of Clinical Neurosciences, Foothills Medical Centre, Calgary, for providing this class.

Definition at line 39 of file vtkOpenGLImageSliceMapper.h.

Member Typedef Documentation

typedef vtkImageSliceMapper vtkOpenGLImageSliceMapper::Superclass

Reimplemented from vtkImageSliceMapper.

Definition at line 44 of file vtkOpenGLImageSliceMapper.h.

Constructor & Destructor Documentation

vtkOpenGLImageSliceMapper::vtkOpenGLImageSliceMapper ( ) [protected]

vtkOpenGLImageSliceMapper::~vtkOpenGLImageSliceMapper ( ) [protected]

Member Function Documentation

static vtkOpenGLImageSliceMapper* vtkOpenGLImageSliceMapper::New ( ) [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkImageSliceMapper.

static int vtkOpenGLImageSliceMapper::IsTypeOf ( const char * name ) [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkImageSliceMapper.

virtual int vtkOpenGLImageSliceMapper::IsA ( const char * name ) [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkImageSliceMapper.

static vtkOpenGLImageSliceMapper* vtkOpenGLImageSliceMapper::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkImageSliceMapper.

virtual vtkObjectBase* vtkOpenGLImageSliceMapper::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkImageSliceMapper.

vtkOpenGLImageSliceMapper* vtkOpenGLImageSliceMapper::NewInstance ( ) const

Reimplemented from vtkImageSliceMapper.

virtual void vtkOpenGLImageSliceMapper::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)		`[virtual]`

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkImageSliceMapper.

void vtkOpenGLImageSliceMapper::Render	(	vtkRenderer *	ren,
		vtkImageSlice *	prop
	)		`[virtual]`

Implement base class method. Perform the render.

Reimplemented from vtkImageSliceMapper.

void vtkOpenGLImageSliceMapper::ReleaseGraphicsResources ( vtkWindow * ) [virtual]

Release any graphics resources that are being consumed by this mapper, the image texture in particular. Using the same texture in multiple render windows is NOT currently supported.

Reimplemented from vtkImageSliceMapper.

void vtkOpenGLImageSliceMapper::RenderColorAndLighting	(	double	red,
		double	green,
		double	blue,
		double	alpha,
		double	ambient,
		double	diffuse
	)		`[protected]`

Call the OpenGL code that does color and lighting.

void vtkOpenGLImageSliceMapper::RecursiveRenderTexturedPolygon	(	vtkRenderer *	ren,
		vtkImageProperty *	property,
		vtkImageData *	image,
		int	extent[6],
		bool	recursive
	)		`[protected]`

Recursive internal method, will call the non-recursive method as many times as necessary if the texture must be broken up into pieces that are small enough for the GPU to render

void vtkOpenGLImageSliceMapper::RenderTexturedPolygon	(	vtkRenderer *	ren,
		vtkImageProperty *	property,
		vtkImageData *	image,
		int	extent[6],
		bool	recursive
	)		`[protected]`

Non-recursive internal method, generate a single texture and its corresponding geometry.

void vtkOpenGLImageSliceMapper::RenderPolygon	(	vtkPoints *	points,
		const int	extent[6],
		bool	textured
	)		`[protected]`

Basic polygon rendering, if the textured parameter is set the tcoords are included, otherwise they aren't.

void vtkOpenGLImageSliceMapper::RenderBackground	(	vtkPoints *	points,
		const int	extent[6],
		bool	textured
	)		`[protected]`

Render the background, which means rendering everything within the plane of the image except for the polygon that displays the image data.

void vtkOpenGLImageSliceMapper::BindFragmentProgram	(	vtkRenderer *	ren,
		vtkImageProperty *	property
	)		`[protected]`

Bind the fragment program, and generate it first if necessary.

vtkStdString vtkOpenGLImageSliceMapper::BuildFragmentProgram ( vtkImageProperty * property ) [protected]

Build the fragment program to use with the texture.

void vtkOpenGLImageSliceMapper::ComputeTextureSize	(	const int	extent[6],
		int &	xdim,
		int &	ydim,
		int	imageSize[2],
		int	textureSize[2]
	)		`[protected, virtual]`

Given an extent that describes a slice (it must have unit thickness in one of the three directions), return the dimension indices that correspond to the texture "x" and "y", provide the x, y image size, and provide the texture size (padded to a power of two if the hardware requires).

Reimplemented from vtkImageMapper3D.

bool vtkOpenGLImageSliceMapper::TextureSizeOK ( const int size[2] ) [protected]