Volume Class Reference

#include <Volume.h>

List of all members.

Public Member Functions
	Volume (unsigned short x_dim_, unsigned short y_dim_, unsigned short z_dim_)
	Volume.cpp.
virtual	~Volume ()
RGBAColor *	getSlice (SliceOrientation orientation)
RGBAColor *	getColorData ()
unsigned short *	getOpacityData ()
bool	getOpacityData (int x, int y, int z, unsigned short &opacity_data)
unsigned short	getOpacityData (int x, int y, int z)
unsigned short	getImageData (int x, int y, int z)
bool	getOpacityData (Vector3 &position, unsigned short &voxel)
bool	isOpacityDataTrilinearInterpolated (float x_pos, float y_pos, float z_pos, unsigned short &opacity)
unsigned int	getXDim ()
unsigned int	getYDim ()
unsigned int	getZDim ()
unsigned int	getVolumeSize ()
unsigned short	calcMaxDimension ()
void	calcGradient ()
Gradient *	getGradientData ()
bool	getGradientNNI (float x_pos, float y_pos, float z_pos, Gradient &grad)
bool	getGradientTLI (float x_pos, float y_pos, float z_pos, Gradient &grad)
	-------------------------------------------------------------getGradientTI()-
bool	calcRayLength (Vector3 &nearp, Vector3 &farp, Vector3 &position, Vector3 &direction, float &length)
float	getStepLength (Vector3 &pos)
Public Attributes
Gradient *	gradients_
Gradient *	gra_mag_
Protected Attributes
RGBAColor *	color_data_
unsigned short *	opacity_data_
	The opacity data values of every voxel in the volume.
unsigned short	x_dim_
	The x dimension of the volume dataset.
unsigned short	y_dim_
	The y dimension of the volume dataset.
unsigned short	z_dim_
	The z dimension of the volume dataset.
unsigned short	max_dim_
	The value of the biggest dimension.
float	histogram_ [MAXDENSITY+1]
	The histogram values.

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Constructor & Destructor Documentation

Volume::Volume	(	unsigned short	x_dim_,
		unsigned short	y_dim_,
		unsigned short	z_dim_
	)

Volume.cpp.

The default constructor.

Parameters:

	x_dim_	The x dimension of the volume.
	y_dim_	The y dimension of the volume.
	z_dim_	The z dimension of the volume.

Volume::~Volume

(

)

[virtual]

The destructor.

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Member Function Documentation

void Volume::calcGradient

(

)

unsigned short Volume::calcMaxDimension

(

)

Finds out the biggest dimension:

Returns:

max_dim_ The value of the biggest dimension of the data:

bool Volume::calcRayLength	(	Vector3 &	nearp,
		Vector3 &	farp,
		Vector3 &	position,
		Vector3 &	direction,
		float &	length
	)

Calculates the start and endpoint of an ray.

Returns:

Returns true if ray intersects the data.

RGBAColor * Volume::getColorData

(

)

Returns the pointer to the color data array which is going to be rendered.

Returns:

Returns a pointer to the color data array.

Gradient * Volume::getGradientData

(

)

Returns the pointer to the gradient data array.

Returns:

Returns a pointer to the gradient data array.

bool Volume::getGradientNNI	(	float	x_pos,
		float	y_pos,
		float	z_pos,
		Gradient &	grad
	)

Returns the the gradient on the specified position.

Returns:

Returns true if data was found.

bool Volume::getGradientTLI	(	float	x_pos,
		float	y_pos,
		float	z_pos,
		Gradient &	grad
	)

-------------------------------------------------------------getGradientTI()-

-------------------------------------------------------------getGradientTI()-

Returns the the trilinear interpolated gradient on the specified position.

Returns:

Returns true if data was found.

unsigned short Volume::getImageData	(	int	x,
		int	y,
		int	z
	)

Checks if the point is a valid data point and returns the opacity data at this point.

Parameters:

	x	The x-coord. of the point.
	y	The y-coord. of the point.
	z	The z-coord. of the point.

Returns:

The opacity data at this point.

bool Volume::getOpacityData	(	Vector3 &	position,
		unsigned short &	voxel
	)

Returns true if there is an opacity value on the specified vector-point.

Parameters:

	position	The position vector of the point.
	opacity_data

Returns:

true.

unsigned short Volume::getOpacityData	(	int	x,
		int	y,
		int	z
	)

Checks if the point is a valid data point and returns the opacity data at this point.

Parameters:

	x	The x-coord. of the point.
	y	The y-coord. of the point.
	z	The z-coord. of the point.

Returns:

The opacity data at this point.

bool Volume::getOpacityData	(	int	x,
		int	y,
		int	z,
		unsigned short &	opacity_data
	)

Returns true if there is an opacity value on the specified point.

Parameters:

	x	The x-coord. of the point.
	y	The y-coord. of the point.
	z	The z-coord. of the point.
	opacity_data

Returns:

true.

unsigned short * Volume::getOpacityData

(

)

Returns the pointer to the opacity data array.

Returns:

Returns a pointer to the opacity data array.

RGBAColor * Volume::getSlice

(

SliceOrientation

orientation

)

Returns the slice specified by the orientation.

Parameters:

orientation

The orientation of the slice.

Returns:

Returns the color array of pixels of the specified slice.

float Volume::getStepLength

(

Vector3 &

pos

)

Calculates the current step length for sampling the ray depending on the underlying gradient data.

Returns:

step_length Returns the current step length.

unsigned int Volume::getVolumeSize

(

)

Returns the data size.

Returns:

Returns the size of the volume.

unsigned int Volume::getXDim

(

)

Returns the value of the x dimension.

Returns:

Returns the x dimension of the volume.

unsigned int Volume::getYDim

(

)

Returns the value of the y dimension.

Returns:

Returns the y dimension of the volume.

unsigned int Volume::getZDim

(

)

Returns the value of the z dimension.

Returns:

Returns the z dimension of the volume.

bool Volume::isOpacityDataTrilinearInterpolated	(	float	x_pos,
		float	y_pos,
		float	z_pos,
		unsigned short &	opacity
	)

Makes a trilinear interpolation at point 'position' for the opacity_data.

Parameters:

	position	The location of the calculation.
	opacity_data	Becomes the interpolated value.

Returns:

true if the calculation suceeded.

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Member Data Documentation

RGBAColor* Volume::color_data_ [protected]

Holds the color values of every voxel in the volume and this one is going to be rendered by OpenGL.

Gradient* Volume::gra_mag_

Gradient* Volume::gradients_

float Volume::histogram_[MAXDENSITY+1] [protected]

The histogram values.

unsigned short Volume::max_dim_ [protected]

The value of the biggest dimension.

unsigned short* Volume::opacity_data_ [protected]

The opacity data values of every voxel in the volume.

unsigned short Volume::x_dim_ [protected]

The x dimension of the volume dataset.

unsigned short Volume::y_dim_ [protected]

The y dimension of the volume dataset.

unsigned short Volume::z_dim_ [protected]

The z dimension of the volume dataset.

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

• Eigene Dateien/9.Semester/Visualisierung/LU/Volume_Renderer_dec05v2/Volume Renderer/Volume.h
• Eigene Dateien/9.Semester/Visualisierung/LU/Volume_Renderer_dec05v2/Volume Renderer/Volume.cpp

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