24#ifndef _SO_VOLUME_HISTOGRAM_
25#define _SO_VOLUME_HISTOGRAM_
28#pragma warning( push )
29#pragma warning(disable:4251)
30#pragma warning(disable:4127)
37#include <Inventor/STL/limits>
38#include <Inventor/STL/vector>
101 { m_undefinedValue=undefinedValue; }
108 {
return m_undefinedValue; };
201 void set(
const std::vector<int64_t> & histo);
206 void set(
const std::vector<int64_t>& histo,
const std::vector<double>& values);
211 template<
typename T>
inline size_t getEntry(T value)
const;
243 const double undefinedValue,
274 const double undefinedValue,
284 static void initClass();
285 static void exitClass();
291 template<
typename T>
inline size_t getEntryInternal(T value)
const;
298 template<
typename T>
inline size_t getEntryCaster(T value)
const;
301 unsigned int computeNumSignificantBits()
const;
303 std::vector<int64_t> m_histo;
308 unsigned int m_numSignificantBits;
313 double m_undefinedValue;
316 template <
typename T>
340template<
typename T>
size_t
341SoVolumeHistogram::getEntryInternal(T value)
const
344 assert(
sizeof(T) <= 4);
348 if ( std::numeric_limits<T>::is_signed )
349 offset = (
sizeof(T) >= 2) ? 0x8000 : 0x80;
351 if (
sizeof(T) == 4 )
352 factor = (
size_t)0x10000;
354 size_t entry = (size_t)(value/int64_t(factor)+int64_t(offset));
360template<
typename T>
size_t
361SoVolumeHistogram::getEntryCaster(T value)
const
363 return getEntryInternal(T(value));
367template<
typename T>
size_t
375 ret = getEntryInternal<unsigned short>((
unsigned short)value);
378 ret = getEntryInternal<uint32_t>((uint32_t)value);
381 ret = getEntryInternal<signed char>((
signed char)value);
384 ret = getEntryInternal<signed short>((
signed short)value);
387 ret = getEntryInternal<int32_t>((int32_t)value);
390 ret = getEntryInternal<float>((
float)value);
393 ret = getEntryInternal<unsigned char>((
unsigned char)value);
396 ret = getEntryInternal<double>((
double)value);
407template<>
inline size_t
408SoVolumeHistogram::getEntryInternal<float>(
float value)
const
411 if ( m_rangeMax == m_rangeMin )
413 double factorDouble = 0.0f;
414 factorDouble = 0xffff / (m_rangeMax - m_rangeMin);
415 size_t entry = (size_t)((value-m_rangeMin)*factorDouble);
421template<>
inline size_t
422SoVolumeHistogram::getEntryInternal<double>(
double value)
const
425 if ( m_rangeMax == m_rangeMin )
427 double factorDouble = 0.0f;
428 factorDouble = 0xffff / (m_rangeMax - m_rangeMin);
429 size_t entry = (size_t)((value-m_rangeMin)*factorDouble);
435#pragma warning( pop )
<a href="IconLegend.html"><img src="extTGS.gif" alt="VSG extension" border="0"></a> 3D box class.
Class encoding a data type.
SbBool isInteger() const
Returns true if the type is an integer type.
@ UNSIGNED_INT32
unsigned int (32bits)
@ UNSIGNED_BYTE
unsigned byte
@ SIGNED_SHORT
signed short
@ UNSIGNED_SHORT
unsigned short
@ SIGNED_INT32
signed int (32bits)
<a href="IconLegend.html"><img src="extTGS.gif" alt="VSG extension" border="0"></a> 2D vector class ...
<a href="IconLegend.html"><img src="extTGS.gif" alt="VSG extension" border="0"></a> Arithmetic funct...
<a href="IconLegend.html"><img src="extTGS.gif" alt="VSG extension" border="0"></a> Abstract base cl...
void set(const std::vector< int64_t > &histo)
Set the histogram.
void addValues(SoBufferObject *values, const int numValues)
Add to the histogram a 1D array of values.
void setUndefinedValue(const double undefinedValue)
Setup the undefined value to ignore when computing the histogram.
static void computeMinMaxWithUndefined(SoBufferObject *valuesBuffer, const double undefinedValue, const SbDataType &dataType, const SbVec3i32 &arrayDim, const SbBox3i32 &range, double &min, double &max)
Compute min max.
double getMaxValueD() const
Returns the max value of the dataset for floating data types.
static void computeMinMax(void *valuesBuffer, const SbDataType &dataType, const SbVec3i32 &arrayDim, SbVec2d &minMax)
Compute min max.
static void computeMinMax(SoBufferObject *valuesBuffer, const SbDataType &dataType, const SbVec3i32 &arrayDim, const SbBox3i32 &range, double &min, double &max)
Compute min max.
size_t getEntry(T value) const
Returns the histogram entry corresponding to the value.
size_t getHistoSize() const
Returns the size of the histogram.
double getMax() const
Returns the max value of the dataset according to the specified data type.
int64_t getNumValues(size_t entry)
Returns the histogram value corresponding to the entry.
int64_t getMaxValue() const
Returns the max value of the dataset for integer data types.
double getValueD(size_t entry)
Returns the value corresponding to the entry for floating data types.
int64_t getValue(size_t entry)
Returns the value corresponding to the entry for integer data types.
void addValues(SoBufferObject *values, const SbVec3i32 &arrayDim, const SbBox3i32 &range)
Add to the histogram the values in the specified range inside the given array.
~SoVolumeHistogram()
Destructor.
int64_t * getHistogram()
Returns a 64 bit integer pointer to the histogram data, the size of the histogram array is getHistoSi...
void set(const std::vector< int64_t > &histo, const std::vector< double > &values)
Set the histogram.
int getNumSignificantBits() const
Returns the number of significant bits for the dataset, only relevant for integer data types.
static void computeMinMaxWithUndefined(void *valuesBuffer, const double undefinedValue, const SbDataType &dataType, const SbVec3i32 &arrayDim, SbVec2d &minMax)
Compute min max.
double getUndefinedValue() const
return the current undefined value.
double getMinValueD() const
Returns the min value of the dataset for floating data types.
SoVolumeHistogram(const SbDataType &dataType)
Constructor.
int64_t getMinValue() const
Returns the min value of the dataset for integer data types.
void setInputValueRange(double rangeMin, double rangeMax)
For floating data type, specifies the range the histogram has to be computed in.
double getMin() const
Returns the max value of the dataset according to the specified data type.
T Clamp(T a, T minV, T maxV)
Clamps value to given range [minV, maxV].