PtexTriangleFilter Class Reference

#include <PtexTriangleFilter.h>

Inheritance diagram for PtexTriangleFilter:

Public Member Functions
	PtexTriangleFilter (PtexTexture *tx, const PtexFilter::Options &opts)
virtual void	release ()
	Release resources held by this pointer (pointer becomes invalid). More...
virtual void	eval (float *result, int firstchan, int nchannels, int faceid, float u, float v, float uw1, float vw1, float uw2, float vw2, float width, float blur)
	Apply filter to a ptex data file. More...

Protected Member Functions
void	buildKernel (PtexTriangleKernel &k, float u, float v, float uw1, float vw1, float uw2, float vw2, float width, float blur, Res faceRes)
void	splitAndApply (PtexTriangleKernel &k, int faceid, const Ptex::FaceInfo &f)
void	applyAcrossEdge (PtexTriangleKernel &k, const Ptex::FaceInfo &f, int eid)
void	apply (PtexTriangleKernel &k, int faceid, const Ptex::FaceInfo &f)
void	applyIter (PtexTriangleKernelIter &k, PtexFaceData *dh)
virtual	~PtexTriangleFilter ()
Protected Member Functions inherited from PtexFilter
virtual	~PtexFilter ()
	Destructor not for public use. Use release() instead. More...

Protected Attributes
PtexTexture *	_tx
Options	_options
float *	_result
float	_weight
int	_firstChanOffset
int	_nchan
int	_ntxchan
DataType	_dt

Additional Inherited Members
Public Types inherited from PtexFilter
enum	FilterType {   f_point, f_bilinear, f_box, f_gaussian,   f_bicubic, f_bspline, f_catmullrom, f_mitchell }
	Filter types. More...
Static Public Member Functions inherited from PtexFilter
static PtexFilter *	getFilter (PtexTexture *tx, const Options &opts)

Detailed Description

Definition at line 46 of file PtexTriangleFilter.h.

Constructor & Destructor Documentation

PtexTriangleFilter()

PtexTriangleFilter::PtexTriangleFilter ( PtexTexture *  tx, const PtexFilter::Options &  opts  )

inline

Definition at line 49 of file PtexTriangleFilter.h.

~PtexTriangleFilter()

virtual PtexTriangleFilter::~PtexTriangleFilter ( )

inlineprotectedvirtual

Definition at line 69 of file PtexTriangleFilter.h.

Member Function Documentation

apply()

void PtexTriangleFilter::apply ( PtexTriangleKernel &  k, int  faceid, const Ptex::FaceInfo &  f  )

protected

Definition at line 200 of file PtexTriangleFilter.cpp.

References _tx, applyIter(), PtexTriangleKernel::clampExtent(), PtexTriangleKernel::clampRes(), PtexTexture::getData(), PtexTriangleKernel::getIterators(), PtexTriangleKernel::res, Ptex::FaceInfo::res, and PtexTriangleKernelIter::valid.

Referenced by splitAndApply().

applyAcrossEdge()

void PtexTriangleFilter::applyAcrossEdge ( PtexTriangleKernel &  k, const Ptex::FaceInfo &  f, int  eid  )

protected

Definition at line 190 of file PtexTriangleFilter.cpp.

References _tx, Ptex::FaceInfo::adjedge(), Ptex::FaceInfo::adjface(), PtexTexture::getFaceInfo(), PtexTriangleKernel::reorient(), and splitAndApply().

Referenced by splitAndApply().

applyIter()

void PtexTriangleFilter::applyIter ( PtexTriangleKernelIter &  k, PtexFaceData *  dh  )

protected

Definition at line 220 of file PtexTriangleFilter.cpp.

References _dt, _firstChanOffset, _nchan, _ntxchan, _result, _weight, PtexTriangleKernelIter::apply(), PtexTriangleKernelIter::applyConst(), PtexFaceData::getData(), PtexFaceData::getTile(), PtexFaceData::isConstant(), PtexFaceData::isTiled(), PtexUtils::max(), PtexUtils::min(), PtexTriangleKernelIter::rowlen, PtexFaceData::tileRes(), PtexTriangleKernelIter::u, Ptex::Res::u(), PtexTriangleKernelIter::u1, PtexTriangleKernelIter::u2, PtexTriangleKernelIter::v, Ptex::Res::v(), PtexTriangleKernelIter::v1, PtexTriangleKernelIter::v2, PtexTriangleKernelIter::w1, PtexTriangleKernelIter::w2, and PtexTriangleKernelIter::weight.

Referenced by apply().

buildKernel()

void PtexTriangleFilter::buildKernel ( PtexTriangleKernel &  k, float  u, float  v, float  uw1, float  vw1, float  uw2, float  vw2, float  width, float  blur, Res  faceRes  )

protected

Definition at line 105 of file PtexTriangleFilter.cpp.

References C, PtexUtils::calcResFromWidth(), PtexUtils::max(), PtexUtils::min(), PtexTriangleKernelWidth, and PtexTriangleKernel::set().

Referenced by eval().

eval()

PTEX_NAMESPACE_BEGIN void PtexTriangleFilter::eval ( float *  result, int  firstchan, int  nchannels, int  faceid, float  u, float  v, float  uw1, float  vw1, float  uw2, float  vw2, float  width, float  blur  )

virtual

Apply filter to a ptex data file.

The filter region is a parallelogram centered at the given (u,v) coordinate with sides defined by two vectors [uw1, vw1] and [uw2, vw2]. For an axis-aligned rectangle, the vectors are [uw, 0] and [0, vw]. See Filter Footprint for details.

Parameters

result	Buffer to hold filter result. Must be large enough to hold nchannels worth of data.
firstchan	First channel to evaluate [0..tx->numChannels()-1]
nchannels	Number of channels to evaluate
faceid	Face index [0..tx->numFaces()-1]
u	U coordinate, normalized [0..1]
v	V coordinate, normalized [0..1]
uw1	U filter width 1, normalized [0..1]
vw1	V filter width 1, normalized [0..1]
uw2	U filter width 2, normalized [0..1]
vw2	V filter width 2, normalized [0..1]
width	scale factor for filter width
blur	amount to add to filter width [0..1]

Implements PtexFilter.

Definition at line 50 of file PtexTriangleFilter.cpp.

References _dt, _firstChanOffset, _nchan, _ntxchan, _result, _tx, _weight, buildKernel(), PtexUtils::clamp(), Ptex::ConvertToFloat(), Ptex::DataSize(), PtexTexture::dataType(), PtexFaceData::getData(), PtexTexture::getData(), PtexTexture::getFaceInfo(), PtexUtils::min(), PtexTexture::numChannels(), PtexTexture::numFaces(), Ptex::OneValue(), PtexTriangleKernel::res, and splitAndApply().

release()

virtual void PtexTriangleFilter::release ( )

inlinevirtual

Release resources held by this pointer (pointer becomes invalid).

Implements PtexFilter.

Definition at line 53 of file PtexTriangleFilter.h.

splitAndApply()

void PtexTriangleFilter::splitAndApply ( PtexTriangleKernel &  k, int  faceid, const Ptex::FaceInfo &  f  )

protected

Definition at line 167 of file PtexTriangleFilter.cpp.

References Ptex::FaceInfo::adjface(), apply(), applyAcrossEdge(), PtexTriangleKernel::splitU(), PtexTriangleKernel::splitV(), PtexTriangleKernel::splitW(), PtexTriangleKernel::u1, PtexTriangleKernel::v1, and PtexTriangleKernel::w1.

Referenced by applyAcrossEdge(), and eval().

Member Data Documentation

_dt

DataType PtexTriangleFilter::_dt

protected

Definition at line 78 of file PtexTriangleFilter.h.

Referenced by applyIter(), and eval().

_firstChanOffset

int PtexTriangleFilter::_firstChanOffset

protected

Definition at line 75 of file PtexTriangleFilter.h.

Referenced by applyIter(), and eval().

_nchan

int PtexTriangleFilter::_nchan

protected

Definition at line 76 of file PtexTriangleFilter.h.

Referenced by applyIter(), and eval().

_ntxchan

int PtexTriangleFilter::_ntxchan

protected

Definition at line 77 of file PtexTriangleFilter.h.

Referenced by applyIter(), and eval().

_options

Options PtexTriangleFilter::_options

protected

Definition at line 72 of file PtexTriangleFilter.h.

_result

float* PtexTriangleFilter::_result

protected

Definition at line 73 of file PtexTriangleFilter.h.

Referenced by applyIter(), and eval().

_tx

PtexTexture* PtexTriangleFilter::_tx

protected

Definition at line 71 of file PtexTriangleFilter.h.

Referenced by apply(), applyAcrossEdge(), and eval().

_weight

float PtexTriangleFilter::_weight

protected

Definition at line 74 of file PtexTriangleFilter.h.

Referenced by applyIter(), and eval().

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

• PtexTriangleFilter.h
• PtexTriangleFilter.cpp