# Visualization Library

A lightweight C++ OpenGL middleware for 2D/3D graphics

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# vlVolume::Volume Class Reference

Defines the volume data to be used with a MarchingCube object. More...

`#include <MarchingCubes.hpp>`

Inheritance diagram for vlVolume::Volume:

List of all members.

## Classes

struct | Cube
| A Volume cell.

## Public Member Functions

| Volume ()
virtual const char * | className ()
| Returns the name of the class.
void | setup (float *data, const vl::fvec3 &bottom_left, const vl::fvec3 &top_right, const vl::ivec3 &slices)
void | setup (const Volume &)
vl::ref< Volume > | downsample () const
| Returns a new volume which is half of the size of the original volume in each direction (thus requires up to 1/8th of the memory).
const float * | values () const
float * | values ()
const float & | value (int i) const
float & | value (int i)
const float & | value (int x, int y, int z) const
float & | value (int x, int y, int z)
void | normalHQ (vl::fvec3 &normal, const vl::fvec3 &v, float dx, float dy, float dz)
| Computes a high quality normal (best rendering quality).
void | normalLQ (vl::fvec3 &normal, const vl::fvec3 &v, float dx, float dy, float dz)
| Computes a low quality normal (best performances).
float | sampleSmooth (float x, float y, float z) const
| Samples the volume using tri-linear interpolation sampling.
float | sampleNearest (float x, float y, float z) const
| Samples the volume using nearest point sampling.
vl::fvec3 | coordinate (int x, int y, int z) const
const vl::fvec3 & | bottomLeft () const
const vl::fvec3 & | topRight () const
const vl::ivec3 & | slices () const
vl::fvec3 | size () const
float | computeMinimum () const
float | computeMaximum () const
float | computeAverage () const
float | minimum () const
float | maximum () const
float | average () const
const Volume::Cube & | cube (int x, int y, int z) const
const vl::fvec3 & | cellSize () const
| Returns the x/y/z size of a cell.
bool | dataIsDirty () const
| Returns true if the internal data hasn't been updated since the last call to setDataDirty() or setup().
void | setDataDirty ()
| Notifies that the data of a Volume has changed and that the internal acceleration structures should be recomputed.
void | setupInternalData ()

## Protected Attributes

std::vector< float > | mValues
vl::fvec3 | mBottomLeft
vl::fvec3 | mTopRight
vl::fvec3 | mSize
vl::ivec3 | mSlices
vl::fvec3 | mCellSize
float | mMinimum
float | mMaximum
float | mAverage
bool | mDataIsDirty
std::vector< Cube > | mCubes

## Detailed Description

Defines the volume data to be used with a MarchingCube object.

## Constructor & Destructor Documentation

Volume::Volume | ( |  | ) |

## Member Function Documentation

virtual const char* vlVolume::Volume::className | ( |  | ) | `[inline, virtual]`

Returns the name of the class.

Reimplemented from vl::Object.

void Volume::setup | ( | float * | data,
|  | const vl::fvec3 & | bottom_left,
|  | const vl::fvec3 & | top_right,
|  | const vl::ivec3 & | slices |
| ) |  |  |

void Volume::setup | ( | const Volume & | volume | ) |

ref< Volume > Volume::downsample | ( |  | ) | const

Returns a new volume which is half of the size of the original volume in each direction (thus requires up to 1/8th of the memory).

Use this function when the volume data to be processed is too big or produces too many polygons.

const float* vlVolume::Volume::values | ( |  | ) | const`[inline]`

float* vlVolume::Volume::values | ( |  | ) | `[inline]`

const float& vlVolume::Volume::value | ( | int | i | ) | const`[inline]`

float& vlVolume::Volume::value | ( | int | i | ) | `[inline]`

const float& vlVolume::Volume::value | ( | int | x,
|  | int | y,
|  | int | z |
| ) |  |  | const`[inline]`

float& vlVolume::Volume::value | ( | int | x,
|  | int | y,
|  | int | z |
| ) |  |  | `[inline]`

void Volume::normalHQ | ( | vl::fvec3 & | normal,
|  | const vl::fvec3 & | v,
|  | float | dx,
|  | float | dy,
|  | float | dz |
| ) |  |  |

Computes a high quality normal (best rendering quality).

void Volume::normalLQ | ( | vl::fvec3 & | normal,
|  | const vl::fvec3 & | v,
|  | float | dx,
|  | float | dy,
|  | float | dz |
| ) |  |  |

Computes a low quality normal (best performances).

float Volume::sampleSmooth | ( | float | x,
|  | float | y,
|  | float | z |
| ) |  |  | const

Samples the volume using tri-linear interpolation sampling.

float Volume::sampleNearest | ( | float | x,
|  | float | y,
|  | float | z |
| ) |  |  | const

Samples the volume using nearest point sampling.

vl::fvec3 vlVolume::Volume::coordinate | ( | int | x,
|  | int | y,
|  | int | z |
| ) |  |  | const`[inline]`

const vl::fvec3& vlVolume::Volume::bottomLeft | ( |  | ) | const`[inline]`

const vl::fvec3& vlVolume::Volume::topRight | ( |  | ) | const`[inline]`

const vl::ivec3& vlVolume::Volume::slices | ( |  | ) | const`[inline]`

vl::fvec3 vlVolume::Volume::size | ( |  | ) | const`[inline]`

float Volume::computeMinimum | ( |  | ) | const

float Volume::computeMaximum | ( |  | ) | const

float Volume::computeAverage | ( |  | ) | const

float vlVolume::Volume::minimum | ( |  | ) | const`[inline]`

float vlVolume::Volume::maximum | ( |  | ) | const`[inline]`

float vlVolume::Volume::average | ( |  | ) | const`[inline]`

const Volume::Cube& vlVolume::Volume::cube | ( | int | x,
|  | int | y,
|  | int | z |
| ) |  |  | const`[inline]`

const vl::fvec3& vlVolume::Volume::cellSize | ( |  | ) | const`[inline]`

Returns the x/y/z size of a cell.

bool vlVolume::Volume::dataIsDirty | ( |  | ) | const`[inline]`

Returns true if the internal data hasn't been updated since the last call to setDataDirty() or setup().

void vlVolume::Volume::setDataDirty | ( |  | ) | `[inline]`

Notifies that the data of a Volume has changed and that the internal acceleration structures should be recomputed.

void Volume::setupInternalData | ( |  | ) |

## Member Data Documentation

std::vector<float> vlVolume::Volume::mValues`[protected]`

vl::fvec3 vlVolume::Volume::mBottomLeft`[protected]`

vl::fvec3 vlVolume::Volume::mTopRight`[protected]`

vl::fvec3 vlVolume::Volume::mSize`[protected]`

vl::ivec3 vlVolume::Volume::mSlices`[protected]`

vl::fvec3 vlVolume::Volume::mCellSize`[protected]`

float vlVolume::Volume::mMinimum`[protected]`

float vlVolume::Volume::mMaximum`[protected]`

float vlVolume::Volume::mAverage`[protected]`

bool vlVolume::Volume::mDataIsDirty`[protected]`

std::vector<Cube> vlVolume::Volume::mCubes`[protected]`

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

- E:/VisualizationLibrary/BuildSystem/VL_DISTRO/Visualization_Library_SDK/src/vlVolume/MarchingCubes.hpp
- E:/VisualizationLibrary/BuildSystem/VL_DISTRO/Visualization_Library_SDK/src/vlVolume/MarchingCubes.cpp

Visualization Library v2009.07 Reference Documentation
Copyright 2005-2009 Michele Bosi. All rights reserved.
Updated on Mon Aug 10 21:41:51 2009.
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