/usr/include/ossim/imaging/ossimImageRenderer.h is in libossim-dev 1.7.21-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Copyright (C) 2001 ImageLinks Inc.
//
// License: LGPL
//
// See LICENSE.txt file in the top level directory for more details.
//
// Author: Garrett Potts
//
//*******************************************************************
// $Id: ossimImageRenderer.h 13330 2008-07-28 18:04:40Z dburken $
#ifndef ossimImageRenderer_HEADER
#define ossimImageRenderer_HEADER
#include <ossim/imaging/ossimImageSourceFilter.h>
#include <ossim/base/ossimDrect.h>
#include <ossim/base/ossimViewInterface.h>
#include <ossim/base/ossimRationalNumber.h>
class ossimImageViewTransform;
class ossimImageData;
class ossimDiscreteConvolutionKernel;
class ossimFilterResampler;
class OSSIMDLLEXPORT ossimImageRenderer : public ossimImageSourceFilter,
public ossimViewInterface
{
public:
ossimImageRenderer();
ossimImageRenderer(ossimImageSource* inputSource,
ossimImageViewTransform* imageViewTrans = NULL);
virtual ~ossimImageRenderer();
virtual ossimString getLongName() const;
virtual ossimString getShortName() const;
virtual void enableSource();
/**
* the resampler will need the tile request to come from the view.
* It will use the view to transoform this to world and then use the
* image's projection to get it into final line sample. This way
* the resampler can fill a tile width by height on the screen
* correctly.
*/
virtual ossimRefPtr<ossimImageData> getTile(const ossimIrect& origin,
ossim_uint32 resLevel=0);
virtual void initialize();
/**
* TheResampler will adjust the rect to whatever the view is. So it
* will project the full image rect onto the view and return the upright
* bounding rect.
*/
virtual ossimIrect getBoundingRect(ossim_uint32 resLevel=0)const;
/**
* Method to save the state of an object to a keyword list.
* Return true if ok or false on error.
*/
virtual bool saveState(ossimKeywordlist& kwl,
const char* prefix=0)const;
/**
* Method to the load (recreate) the state of an object from a keyword
* list. Return true if ok or false on error.
*/
virtual bool loadState(const ossimKeywordlist& kwl,
const char* prefix=0);
void setImageViewTransform(ossimImageViewTransform* transform);
ossimImageViewTransform* getImageViewTransform(){return theImageViewTransform;}
virtual bool getImageGeometry(ossimKeywordlist& kwl,
const char* prefix=0);
virtual bool setView(ossimObject* baseObject,
bool ownsTheView = false);
ossimFilterResampler* getResampler()
{
return theResampler;
}
virtual ossimObject* getView();
virtual const ossimObject* getView()const;
virtual void getDecimationFactor(ossim_uint32 resLevel,
ossimDpt& result)const;
virtual void getDecimationFactors(vector<ossimDpt>& decimations)const;
virtual ossim_uint32 getNumberOfDecimationLevels()const;
virtual void setAutoUpdateInputTransformFlag(bool flag)
{
theAutoUpdateInputTransform = flag;
}
/**
* ordering specifies how the vertices should be arranged.
* valid image vertices is basically the tightly fit convex hull
* of the image. Usually an image has NULL values and are
* internally not upright rectangular. This can cause
* problems some spatial filters.
*
* We need to make sure that the resampler overrides this method.
* it needs to transform the vertices to the view's side.
*/
virtual void getValidImageVertices(vector<ossimIpt>& validVertices,
ossimVertexOrdering ordering=OSSIM_CLOCKWISE_ORDER,
ossim_uint32 resLevel=0)const;
void setMaxLevelsToCompute(ossim_uint32 maxLevels);
ossim_uint32 getMaxLevelsToCompute()const;
void connectInputEvent(ossimConnectionEvent& event);
void disconnectInputEvent(ossimConnectionEvent& event);
void propertyEvent(ossimPropertyEvent& event);
virtual void setProperty(ossimRefPtr<ossimProperty> property);
virtual ossimRefPtr<ossimProperty> getProperty(const ossimString& name)const;
virtual void getPropertyNames(std::vector<ossimString>& propertyNames)const;
private:
class ossimRendererSubRectInfo
{
public:
friend std::ostream& operator <<(std::ostream& out,
const ossimRendererSubRectInfo& rhs)
{
return out << "vul: " << rhs.theVul << endl
<< "vur: " << rhs.theVur << endl
<< "vlr: " << rhs.theVlr << endl
<< "vll: " << rhs.theVll << endl
<< "iul: " << rhs.theIul << endl
<< "iur: " << rhs.theIur << endl
<< "ilr: " << rhs.theIlr << endl
<< "ill: " << rhs.theIll << endl
<< "scale: " << rhs.theViewToImageScale << endl;
}
ossimRendererSubRectInfo()
{
theVul.makeNan();
theVur.makeNan();
theVlr.makeNan();
theVll.makeNan();
theIul.makeNan();
theIur.makeNan();
theIlr.makeNan();
theIll.makeNan();
theViewToImageScale.makeNan();
theImageToViewScale.makeNan();
}
ossimRendererSubRectInfo(const ossimDpt& vul,
const ossimDpt& vur,
const ossimDpt& vlr,
const ossimDpt& vll)
:theVul(vul),
theVur(vur),
theVlr(vlr),
theVll(vll)
{
theIul.makeNan();
theIur.makeNan();
theIlr.makeNan();
theIll.makeNan();
theViewToImageScale.makeNan();
theImageToViewScale.makeNan();
}
bool imageHasNans()const
{
return ( theIul.hasNans()||
theIur.hasNans()||
theIlr.hasNans()||
theIll.hasNans());
}
bool imageIsNan()const
{
return ( theIul.hasNans()&&
theIur.hasNans()&&
theIlr.hasNans()&&
theIll.hasNans());
}
bool viewHasNans()const
{
return ( theVul.hasNans()||
theVur.hasNans()||
theVlr.hasNans()||
theVll.hasNans());
}
bool viewIsNan()const
{
return ( theVul.hasNans()&&
theVur.hasNans()&&
theVlr.hasNans()&&
theVll.hasNans());
}
void splitView(ossimImageViewTransform* transform,
ossimRendererSubRectInfo& ulRect,
ossimRendererSubRectInfo& urRect,
ossimRendererSubRectInfo& lrRect,
ossimRendererSubRectInfo& llRect)const;
void transformViewToImage(ossimImageViewTransform* transform);
void transformImageToView(ossimImageViewTransform* transform);
void roundToInteger()
{
theIul = ossimIpt(theIul);
theIur = ossimIpt(theIur);
theIlr = ossimIpt(theIlr);
theIll = ossimIpt(theIll);
theVul = ossimIpt(theVul);
theVur = ossimIpt(theVur);
theVlr = ossimIpt(theVlr);
theVll = ossimIpt(theVll);
}
void stretchImageOut(bool enableRound=false);
ossimDrect getViewRect()const
{
return ossimDrect(theVul,
theVur,
theVlr,
theVll);
}
ossimDrect getImageRect()const
{
return ossimDrect(theIul,
theIur,
theIlr,
theIll);
}
void roundImageToInteger()
{
theIul = ossimIpt(theIul);
theIur = ossimIpt(theIur);
theIlr = ossimIpt(theIlr);
theIll = ossimIpt(theIll);
}
void roundViewToInteger()
{
theVul = ossimIpt(theVul);
theVur = ossimIpt(theVur);
theVlr = ossimIpt(theVlr);
theVll = ossimIpt(theVll);
}
bool isViewEqual(const ossimRendererSubRectInfo& infoRect)const
{
return ( (theVul == infoRect.theVul)&&
(theVur == infoRect.theVur)&&
(theVlr == infoRect.theVlr)&&
(theVll == infoRect.theVll));
}
bool isViewEqual(const ossimDrect& viewRect)const
{
return ( (theVul == viewRect.ul())&&
(theVur == viewRect.ur())&&
(theVlr == viewRect.lr())&&
(theVll == viewRect.ll()));
}
ossimDpt getAbsValueViewToImageScales()const
{
if(theViewToImageScale.hasNans())
{
return theImageToViewScale;
}
return ossimDpt(fabs(theViewToImageScale.x),
fabs(theViewToImageScale.y));
}
ossimDpt getAbsValueImageToViewScales()const
{
if(theImageToViewScale.hasNans())
{
return theImageToViewScale;
}
return ossimDpt(fabs(theImageToViewScale.x),
fabs(theImageToViewScale.y));
}
bool isViewAPoint()const
{
return ((theVul == theVur)&&
(theVul == theVlr)&&
(theVul == theVll));
}
bool isIdentity()const;
bool canBilinearInterpolate(ossimImageViewTransform* transform,
double error)const;
ossimDpt getParametricCenter(const ossimDpt& ul, const ossimDpt& ur,
const ossimDpt& lr, const ossimDpt& ll)const;
void getViewMids(ossimDpt& upperMid,
ossimDpt& rightMid,
ossimDpt& bottomMid,
ossimDpt& leftMid,
ossimDpt& center)const;
void getImageMids(ossimDpt& upperMid,
ossimDpt& rightMid,
ossimDpt& bottomMid,
ossimDpt& leftMid,
ossimDpt& center)const;
ossimDpt theIul;
ossimDpt theIur;
ossimDpt theIlr;
ossimDpt theIll;
ossimIpt theVul;
ossimIpt theVur;
ossimIpt theVlr;
ossimIpt theVll;
ossimDpt theViewToImageScale;
ossimDpt theImageToViewScale;
};
void recursiveResample(ossimRefPtr<ossimImageData> outputData,
const ossimRendererSubRectInfo& rectInfo,
ossim_uint32 level);
void fillTile(ossimRefPtr<ossimImageData> outputData,
const ossimRendererSubRectInfo& rectInfo);
ossimIrect getBoundingImageRect()const;
/**
*this is called on a property event and on input connection changes.
*/
void checkTransform();
void computeRects();
ossimRefPtr<ossimImageData> getTileAtResLevel(const ossimIrect& boundingRect,
ossim_uint32 resLevel);
template <class T>
void resampleTileToDecimation(T dummyVariable,
ossimRefPtr<ossimImageData> result,
ossimRefPtr<ossimImageData> tile,
ossim_uint32 multiplier);
long computeClosestResLevel(const std::vector<ossimDpt>& decimationFactors,
double scale)const;
void stretchQuadOut(const ossimDpt& amount,
ossimDpt& ul,
ossimDpt& ur,
ossimDpt& lr,
ossimDpt& ll);
/**
* Called on first getTile, will initialize all data needed.
*/
void allocate();
/**
* Deletes all allocated tiles.
*/
void deallocate();
virtual void fireProgressEvent(double percentComplete);
ossimFilterResampler* theResampler;
ossimRefPtr<ossimImageData> theBlankTile;
ossimRefPtr<ossimImageData> theTile;
ossimRefPtr<ossimImageData> theTemporaryBuffer;
/**
* This is going to allow us to chain multiple
* renderers together. So if we have one
* renderer doing a scale and they pass an r-level
* down and we have another renderer within the
* chain he will be starting at a different r-level.
* The default will be r-level 0 request coming
* from the right.
*/
ossim_uint32 theStartingResLevel;
ossimImageViewTransform *theImageViewTransform;
mutable ossimIrect theBoundingRect;
mutable ossimIrect theBoundingViewRect;
/**
* Holds a pre-computed input rect.
*/
// ossimIrect theInputRect;
/**
* Holds a precomputed output rect.
*/
// ossimIrect theOutputRect;
ossim_uint32 theMaxRecursionLevel;
bool theAutoUpdateInputTransform;
vector<ossimDpt> theInputDecimationFactors;
ossim_uint32 theMaxLevelsToCompute;
TYPE_DATA
};
#endif
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