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ossimImageRenderer.cpp
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ossimImageRenderer.cpp
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//*******************************************************************
//
// License: MIT
//
// Author: Garrett Potts
//
//*******************************************************************
// $Id: ossimImageRenderer.cpp 23663 2015-12-11 21:10:54Z dburken $
#include <ossim/imaging/ossimImageRenderer.h>
#include <ossim/base/ossimDpt.h>
#include <ossim/base/ossimDpt3d.h>
#include <ossim/base/ossimDrect.h>
#include <ossim/base/ossimPolyArea2d.h>
#include <ossim/base/ossimCommon.h>
#include <ossim/base/ossimTrace.h>
#include <ossim/base/ossim2dBilinearTransform.h>
#include <ossim/base/ossimProcessProgressEvent.h>
#include <ossim/base/ossimKeywordlist.h>
#include <ossim/base/ossimKeywordNames.h>
#include <ossim/base/ossimConnectableContainerInterface.h>
#include <ossim/base/ossimViewController.h>
#include <ossim/base/ossimStringProperty.h>
#include <ossim/base/ossimNumericProperty.h>
#include <ossim/imaging/ossimImageData.h>
#include <ossim/imaging/ossimImageHandler.h>
#include <ossim/imaging/ossimImageDataFactory.h>
#include <ossim/imaging/ossimImageHandler.h>
#include <ossim/imaging/ossimDiscrete3x3HatFilter.h>
#include <ossim/imaging/ossimDiscreteNearestNeighbor.h>
#include <ossim/imaging/ossimFilterResampler.h>
#include <ossim/projection/ossimImageViewProjectionTransform.h>
#include <ossim/projection/ossimProjectionFactoryRegistry.h>
#include <ossim/projection/ossimImageViewTransformFactory.h>
#include <ossim/projection/ossimMapProjection.h>
#include <ossim/projection/ossimEquDistCylProjection.h>
#include <iostream>
#include <stack>
#include <ossim/base/ossimPreferences.h>
// using namespace std;
#ifdef OSSIM_ID_ENABLED
static const char OSSIM_ID[] = "$Id: ossimImageRenderer.cpp 23663 2015-12-11 21:10:54Z dburken $";
#endif
static ossimTrace traceDebug("ossimImageRenderer:debug");
RTTI_DEF2(ossimImageRenderer, "ossimImageRenderer", ossimImageSourceFilter, ossimViewInterface);
double ossimImageRenderer::m_interpErrorThreshold = 1.0;
void ossimImageRenderer::ossimRendererSubRectInfo::splitHorizontal(std::vector<ossimRendererSubRectInfo>& result)const
{
ossimIrect vrect(m_Vul,
m_Vur,
m_Vlr,
m_Vll);
ossim_int32 w = vrect.width();
// ossim_int32 h = vrect.height();
ossim_int32 w2 = w>>1;
ossimIrect tempLeftRect(m_Vul.x,
m_Vul.y,
m_Vul.x+w2-1,
m_Vlr.y);
ossimIrect tempRightRect(tempLeftRect.ur().x+1,
m_Vul.y,
m_Vur.x,
m_Vlr.y);
ossimRendererSubRectInfo left(m_transform.get());
ossimRendererSubRectInfo right(m_transform.get());
left.m_viewBounds = m_viewBounds;
right.m_viewBounds = m_viewBounds;
left.m_Vul = tempLeftRect.ul();
left.m_Vur = tempLeftRect.ur();
left.m_Vlr = tempLeftRect.lr();
left.m_Vll = tempLeftRect.ll();
right.m_Vul = tempRightRect.ul();
right.m_Vur = tempRightRect.ur();
right.m_Vlr = tempRightRect.lr();
right.m_Vll = tempRightRect.ll();
left.transformViewToImage();
right.transformViewToImage();
if(left.imageIsNan())
{
if(left.m_viewBounds->intersects(left.getViewRect()))
{
result.push_back(left);
}
}
else
{
result.push_back(left);
}
if(right.imageIsNan())
{
if(right.m_viewBounds->intersects(right.getViewRect()))
{
result.push_back(right);
}
}
else
{
result.push_back(right);
}
}
void ossimImageRenderer::ossimRendererSubRectInfo::splitVertical(std::vector<ossimRendererSubRectInfo>& result)const
{
ossimIrect vrect(m_Vul,
m_Vur,
m_Vlr,
m_Vll);
// ossim_int32 w = vrect.width();
ossim_int32 h = vrect.height();
ossim_int32 h2 = h>>1;
ossimIrect tempTopRect(m_Vul.x,
m_Vul.y,
m_Vlr.x,
m_Vul.y+h2-1);
ossimIrect tempBottomRect(m_Vul.x,
tempTopRect.lr().y+1,
m_Vlr.x,
m_Vlr.y);
ossimRendererSubRectInfo top(m_transform.get());
ossimRendererSubRectInfo bottom(m_transform.get());
top.m_viewBounds = m_viewBounds;
bottom.m_viewBounds = m_viewBounds;
top.m_Vul = tempTopRect.ul();
top.m_Vur = tempTopRect.ur();
top.m_Vlr = tempTopRect.lr();
top.m_Vll = tempTopRect.ll();
bottom.m_Vul = tempBottomRect.ul();
bottom.m_Vur = tempBottomRect.ur();
bottom.m_Vlr = tempBottomRect.lr();
bottom.m_Vll = tempBottomRect.ll();
top.transformViewToImage();
bottom.transformViewToImage();
if(top.imageIsNan())
{
if(top.m_viewBounds->intersects(top.getViewRect()))
{
result.push_back(top);
}
}
else
{
result.push_back(top);
}
if(bottom.imageIsNan())
{
if(bottom.m_viewBounds->intersects(bottom.getViewRect()))
{
result.push_back(bottom);
}
}
else
{
result.push_back(bottom);
}
}
void ossimImageRenderer::ossimRendererSubRectInfo::splitAll(std::vector<ossimRendererSubRectInfo>& result)const
{
//std::cout << "FULL Split\n" << std::endl;
// let splitAll for now. We can still optimize but will do that later
ossimIrect tempUlRect;
ossimIrect tempUrRect;
ossimIrect tempLrRect;
ossimIrect tempLlRect;
ossimIrect vrect(m_Vul,
m_Vur,
m_Vlr,
m_Vll);
ossim_int32 w = vrect.width();
ossim_int32 h = vrect.height();
ossim_int32 w2 = w>>1;
ossim_int32 h2 = h>>1;
tempUlRect = ossimIrect(m_Vul.x,
m_Vul.y,
m_Vul.x + (w2 - 1),
m_Vul.y + (h2 - 1));
tempUrRect = ossimIrect(tempUlRect.ur().x+1,
m_Vul.y,
m_Vur.x,
m_Vul.y + (h2 - 1));
tempLrRect = ossimIrect(tempUlRect.lr().x,
tempUlRect.lr().y+1,
m_Vlr.x,
m_Vlr.y);
tempLlRect = ossimIrect(m_Vul.x,
tempUlRect.ll().y+1,
tempLrRect.ul().x,
tempLrRect.ll().y);
// std::cout << "VR: " << vrect.width() << ", " << vrect.height() << "\n"
// << "UL: " << tempUlRect.width() << ", " << tempUlRect.height() << "\n"
// << "UR: " << tempUrRect.width() << ", " << tempUrRect.height() << "\n"
// << "LR: " << tempLrRect.width() << ", " << tempLrRect.height() << "\n"
// << "LL: " << tempLlRect.width() << ", " << tempLlRect.height() << "\n";
ossimRendererSubRectInfo ul(m_transform.get(),tempUlRect.ul(), tempUlRect.ur(),tempUlRect.lr(), tempUlRect.ll());
ossimRendererSubRectInfo ur(m_transform.get(),tempUrRect.ul(), tempUrRect.ur(),tempUrRect.lr(), tempUrRect.ll());
ossimRendererSubRectInfo lr(m_transform.get(),tempLrRect.ul(), tempLrRect.ur(),tempLrRect.lr(), tempLrRect.ll());
ossimRendererSubRectInfo ll(m_transform.get(),tempLlRect.ul(), tempLlRect.ur(),tempLlRect.lr(), tempLlRect.ll());
ul.m_viewBounds = m_viewBounds;
ur.m_viewBounds = m_viewBounds;
lr.m_viewBounds = m_viewBounds;
ll.m_viewBounds = m_viewBounds;
ul.transformViewToImage();
ur.transformViewToImage();
lr.transformViewToImage();
ll.transformViewToImage();
if(ul.imageIsNan())
{
if(ul.m_viewBounds->intersects(ul.getViewRect()))
{
result.push_back(ul);
}
}
else
{
result.push_back(ul);
}
if(ur.imageIsNan())
{
if(ur.m_viewBounds->intersects(ur.getViewRect()))
{
result.push_back(ur);
}
}
else
{
result.push_back(ur);
}
if(lr.imageIsNan())
{
if(lr.m_viewBounds->intersects(lr.getViewRect()))
{
result.push_back(lr);
}
}
else
{
result.push_back(lr);
}
if(ll.imageIsNan())
{
if(ll.m_viewBounds->intersects(ll.getViewRect()))
{
result.push_back(ll);
}
}
else
{
result.push_back(ll);
}
}
void ossimImageRenderer::ossimRendererSubRectInfo::splitView(std::vector<ossimRendererSubRectInfo>& result)const
{
ossim_uint16 splitFlags = getSplitFlags();
if(!splitFlags)
{
return;
}
// just do horizontal split for test
ossimIrect vrect(m_Vul,
m_Vur,
m_Vlr,
m_Vll);
ossim_int32 w = vrect.width();
ossim_int32 h = vrect.height();
ossim_int32 w2 = w>>1;
ossim_int32 h2 = h>>1;
if((w2 <2)&&(h2<2))
{
ossimRendererSubRectInfo rect(m_transform.get(),m_Vul,
m_Vul,
m_Vul,
m_Vul);
rect.m_viewBounds = m_viewBounds;
rect.transformViewToImage();
if(rect.imageHasNans())
{
if(rect.m_viewBounds->intersects(rect.getViewRect()))
{
result.push_back(rect);
}
}
}
// horizontal split if only the upper left and lower left
// vertices need splitting
else if((splitFlags==(UPPER_LEFT_SPLIT_FLAG|LOWER_LEFT_SPLIT_FLAG))||
(splitFlags==(UPPER_RIGHT_SPLIT_FLAG|LOWER_RIGHT_SPLIT_FLAG)))
{
// std::cout << "Horizontal Split\n" << std::endl;
if(w > 1)
{
splitHorizontal(result);
}
}
// check vertical only split
else if((splitFlags==(UPPER_LEFT_SPLIT_FLAG|UPPER_RIGHT_SPLIT_FLAG))||
(splitFlags==(LOWER_RIGHT_SPLIT_FLAG|LOWER_LEFT_SPLIT_FLAG)))
{
//std::cout << "Vertical Split\n" << std::endl;
if(h>1)
{
splitVertical(result);
}
}
else//if((w>1)&&(h>1)&&(splitFlags))
{
if((w<2)&&(h>1))
{
splitVertical(result);
}
else if((w>1)&&(h<2))
{
splitHorizontal(result);
}
else
{
splitAll(result);
}
}
}
void ossimImageRenderer::ossimRendererSubRectInfo::transformImageToView()
{
ossimDpt vul;
ossimDpt vur;
ossimDpt vlr;
ossimDpt vll;
m_transform->imageToView(m_Iul,
vul);
m_transform->imageToView(m_Iur,
vur);
m_transform->imageToView(m_Ilr,
vlr);
m_transform->imageToView(m_Ill,
vll);
m_Vul = vul;
m_Vur = vur;
m_Vlr = vlr;
m_Vll = vll;
}
bool ossimImageRenderer::ossimRendererSubRectInfo::tooBig()const
{
ossimDrect vRect = getViewRect();
return ((vRect.width() > 32) || (vRect.height() > 32));
}
ossim_uint16 ossimImageRenderer::ossimRendererSubRectInfo::getSplitFlags()const
{
#if 1
ossim_uint16 result = SPLIT_NONE;
ossimDrect vRect = getViewRect();
//---
// Don't allow splits beyond 8x8 pixel. ossim2dBilinearTransform was core dumping with
// very small rectangles in canBilinearInterpolate(...) method.
// DRB 05 Dec. 2017
//---
if ( imageIsNan()||(vRect.width() < 8 && vRect.height() < 8) )
{
return result;
}
if(imageHasNans())
{
if(m_viewBounds->intersects(vRect))
{
result = SPLIT_ALL;
}
else
{
return result;
}
}
/*
if(result != SPLIT_ALL)
{
if(m_ulRoundTripError.hasNans()&&m_urRoundTripError.hasNans()&&
m_lrRoundTripError.hasNans()&&m_llRoundTripError.hasNans())
{
if(m_viewBounds->intersects(getViewRect()))
{
result = SPLIT_ALL;
}
return result;
}
else if(tooBig())
{
result = SPLIT_ALL;
}
}
if(result != SPLIT_ALL)
{
if(m_ulRoundTripError.hasNans()) result |= UPPER_LEFT_SPLIT_FLAG;
if(m_urRoundTripError.hasNans()) result |= UPPER_RIGHT_SPLIT_FLAG;
if(m_lrRoundTripError.hasNans()) result |= LOWER_RIGHT_SPLIT_FLAG;
if(m_llRoundTripError.hasNans()) result |= LOWER_LEFT_SPLIT_FLAG;
}
*/
if(result != SPLIT_ALL)
{
// ossim_float64 bias = m_ImageToViewScale.length();
//ossim_float64 bias = (m_ImageToViewScale.x+m_ImageToViewScale.y)/2.0;
//std::cout << "SCALE BIAS = " << bias << "\n";
// if (bias < 1.0)
// bias = 1.0 / bias;
// bias = std::sqrt(bias);
// if(bias < 1) bias = 1.0;
// if((m_ulRoundTripError.length() > bias)||
// (m_urRoundTripError.length() > bias)||
// (m_lrRoundTripError.length() > bias)||
// (m_llRoundTripError.length() > bias))
// {
// std::cout << "________________\n";
// std::cout << "Bias: " << bias << "\n"
// << "View: " << getViewRect() << "\n"
// << "UL: " << m_ulRoundTripError.length() << "\n"
// << "UR: " << m_urRoundTripError.length() << "\n"
// << "LR: " << m_lrRoundTripError.length() << "\n"
// << "LL: " << m_llRoundTripError.length() << "\n";
// }
// if(m_ulRoundTripError.length() > sensitivityScale) result |= UPPER_LEFT_SPLIT_FLAG;
// if(m_urRoundTripError.length() > sensitivityScale) result |= UPPER_RIGHT_SPLIT_FLAG;
// if(m_lrRoundTripError.length() > sensitivityScale) result |= LOWER_RIGHT_SPLIT_FLAG;
// if(m_llRoundTripError.length() > sensitivityScale) result |= LOWER_LEFT_SPLIT_FLAG;
// std::cout << result << " == " << SPLIT_ALL << "\n";
if(!canBilinearInterpolate())
{
// std::cout << "SPLITTING\n";
result = SPLIT_ALL;
}
else
{
// std::cout << "CAN BILINEAR!!!!\n";
}
}
return result;
#else
ossim_uint16 result = SPLIT_NONE;
ossimDrect vRect = getViewRect();
if(imageHasNans()||tooBig())
{
if(m_viewBounds->intersects(getViewRect()))
{
result = SPLIT_ALL;
}
else
{
return result;
}
}
/*
if(result != SPLIT_ALL)
{
if(m_ulRoundTripError.hasNans()&&m_urRoundTripError.hasNans()&&
m_lrRoundTripError.hasNans()&&m_llRoundTripError.hasNans())
{
if(m_viewBounds->intersects(getViewRect()))
{
result = SPLIT_ALL;
}
return result;
}
else if(tooBig())
{
result = SPLIT_ALL;
}
}
if(result != SPLIT_ALL)
{
if(m_ulRoundTripError.hasNans()) result |= UPPER_LEFT_SPLIT_FLAG;
if(m_urRoundTripError.hasNans()) result |= UPPER_RIGHT_SPLIT_FLAG;
if(m_lrRoundTripError.hasNans()) result |= LOWER_RIGHT_SPLIT_FLAG;
if(m_llRoundTripError.hasNans()) result |= LOWER_LEFT_SPLIT_FLAG;
}
*/
if(result != SPLIT_ALL)
{
ossim_float64 sensitivityScale = m_ImageToViewScale.length();
//std::cout << sensitivityScale << std::endl;
if(sensitivityScale < 1.0) sensitivityScale = 1.0/sensitivityScale;
// if((m_ulRoundTripError.length() > sensitivityScale)||
// (m_urRoundTripError.length() > sensitivityScale)||
// (m_lrRoundTripError.length() > sensitivityScale)||
// (m_llRoundTripError.length() > sensitivityScale))
// {
// std::cout << "________________\n";
// std::cout << "Sens: " << sensitivityScale << "\n"
// << "View: " << getViewRect() << "\n"
// << "UL: " << m_ulRoundTripError.length() << "\n"
// << "UR: " << m_urRoundTripError.length() << "\n"
// << "LR: " << m_lrRoundTripError.length() << "\n"
// << "LL: " << m_llRoundTripError.length() << "\n";
// }
// if(m_ulRoundTripError.length() > sensitivityScale) result |= UPPER_LEFT_SPLIT_FLAG;
// if(m_urRoundTripError.length() > sensitivityScale) result |= UPPER_RIGHT_SPLIT_FLAG;
// if(m_lrRoundTripError.length() > sensitivityScale) result |= LOWER_RIGHT_SPLIT_FLAG;
// if(m_llRoundTripError.length() > sensitivityScale) result |= LOWER_LEFT_SPLIT_FLAG;
// std::cout << result << " == " << SPLIT_ALL << "\n";
if((result!=SPLIT_ALL)&&!canBilinearInterpolate(sensitivityScale))
{
// std::cout << "TESTING BILINEAR!!!!\n";
result = SPLIT_ALL;
}
else
{
// std::cout << "CAN BILINEAR!!!!\n";
}
}
return result;
#endif
}
void ossimImageRenderer::ossimRendererSubRectInfo::transformViewToImage()
{
// std::cout << "TRANSFORM VIEW TO IMAGE!!!!!!!!!!!!!!\n";
ossimDrect vrect = getViewRect();
ossim_float64 w = vrect.width() - 1; // subtract 1 to prevent core dump in full-earth view rect
ossim_float64 h = vrect.height();
m_transform->viewToImage(m_Vul, m_Iul);
m_transform->viewToImage(m_Vur, m_Iur);
m_transform->viewToImage(m_Vlr, m_Ilr);
m_transform->viewToImage(m_Vll, m_Ill);
// m_ulRoundTripError = m_transform->getRoundTripErrorView(m_Vul);
// m_urRoundTripError = m_transform->getRoundTripErrorView(m_Vur);
// m_lrRoundTripError = m_transform->getRoundTripErrorView(m_Vlr);
// m_llRoundTripError = m_transform->getRoundTripErrorView(m_Vll);
#if 1
m_transform->getViewToImageScale(m_VulScale, m_Vul);
m_transform->getViewToImageScale(m_VurScale, m_Vur);
m_transform->getViewToImageScale(m_VlrScale, m_Vlr);
m_transform->getViewToImageScale(m_VllScale, m_Vll);
// m_VulScale = computeViewToImageScale(m_Vul, ossimDpt( w, h));
// m_VurScale = computeViewToImageScale(m_Vur, ossimDpt(-w, h));
// m_VlrScale = computeViewToImageScale(m_Vlr, ossimDpt(-w,-h));
// m_VllScale = computeViewToImageScale(m_Vll, ossimDpt( w,-h));
ossim_int32 n = 0;
m_ViewToImageScale.x = 0.0;
m_ViewToImageScale.y = 0.0;
if (!m_VulScale.hasNans())
{
m_ViewToImageScale += m_VulScale;
++n;
}
if(!m_VurScale.hasNans())
{
m_ViewToImageScale += m_VurScale;
++n;
}
if(!m_VlrScale.hasNans())
{
m_ViewToImageScale += m_VlrScale;
++n;
}
if(!m_VllScale.hasNans())
{
m_ViewToImageScale += m_VllScale;
++n;
}
if(!n)
{
m_ViewToImageScale.makeNan();
}
else
{
m_ViewToImageScale.x/=n;
m_ViewToImageScale.y/=n;
}
#else
{
m_ViewToImageScale = ossimDpt(1.0, 1.0);
ossimDpt topDelta = m_Iur - m_Iul;
ossimDpt rightDelta = m_Ilr - m_Iur;
ossimDpt bottomDelta = m_Ill - m_Ilr;
ossimDpt leftDelta = m_Iul - m_Ill;
double topLen = topDelta.length();
double bottomLen = bottomDelta.length();
double rightLen = rightDelta.length();
double leftLen = leftDelta.length();
double averageHoriz = ((topLen) + (bottomLen))*.5;
double averageVert = ((leftLen) + (rightLen))*.5;
ossimDpt deltaViewP1P2 = m_Vul - m_Vur;
ossimDpt deltaViewP1P3 = m_Vul - m_Vll;
double lengthViewP1P2 = deltaViewP1P2.length();//+1;
double lengthViewP1P3 = deltaViewP1P3.length();//+1;
if(lengthViewP1P2 > FLT_EPSILON)
m_ViewToImageScale.x = averageHoriz/lengthViewP1P2;
else
m_ViewToImageScale.makeNan();
if(lengthViewP1P3 > FLT_EPSILON)
m_ViewToImageScale.y = averageVert/lengthViewP1P3;
else
m_ViewToImageScale.makeNan();
}
#endif
//std::cout << m_ViewToImageScale << std::endl;
if(!m_ViewToImageScale.hasNans())
{
m_ImageToViewScale.x = 1.0/m_ViewToImageScale.x;
m_ImageToViewScale.y = 1.0/m_ViewToImageScale.y;
}
else
{
m_ImageToViewScale.makeNan();
}
}
ossimDpt ossimImageRenderer::ossimRendererSubRectInfo::computeViewToImageScale(const ossimDpt& viewPt,
const ossimDpt& delta)const
{
ossimDpt result;
result.makeNan();
if(viewPt.hasNans()) return result;
ossimDpt ipt;
m_transform->viewToImage(viewPt, ipt);
if(!ipt.isNan())
{
// ossimDpt delta;
// transform->viewToImage(viewPt+ossimDpt(0.5,0.5), delta);
// delta = delta-ipt;
// result.x = delta.length()/std::sqrt(2);
// result.y = result.x;
ossimDpt dx;
ossimDpt dy;
m_transform->viewToImage(viewPt + ossimDpt(delta.x,0.0), dx);
m_transform->viewToImage(viewPt + ossimDpt(0.0,delta.y), dy);
dx = dx-ipt;
dy = dy-ipt;
result.x = dx.length()/fabs(delta.x);
result.y = dy.length()/fabs(delta.y);
}
return result;
}
void ossimImageRenderer::ossimRendererSubRectInfo::stretchImageOut(bool enableRound)
{
ossimDpt topDelta = m_Iur - m_Iul;
ossimDpt rightDelta = m_Ilr - m_Iur;
ossimDpt bottomDelta = m_Ill - m_Ilr;
ossimDpt leftDelta = m_Iul - m_Ill;
topDelta = topDelta*(1.0/topDelta.length());
rightDelta = rightDelta*(1.0/rightDelta.length());
bottomDelta = bottomDelta*(1.0/bottomDelta.length());
leftDelta = leftDelta*(1.0/leftDelta.length());
m_Iul = m_Iul + ((leftDelta - topDelta)*.5);
m_Iur = m_Iur + ((topDelta - rightDelta)*.5);
m_Ilr = m_Ilr + ((rightDelta - bottomDelta)*.5);
m_Ill = m_Ill + ((bottomDelta - leftDelta)*.5);
if(enableRound)
{
m_Iul = ossimIpt(ossim::round<int>(m_Iul.x),
ossim::round<int>(m_Iul.y));
m_Iur = ossimIpt(ossim::round<int>(m_Iur.x),
ossim::round<int>(m_Iur.y));
m_Ilr = ossimIpt(ossim::round<int>(m_Ilr.x),
ossim::round<int>(m_Ilr.y));
m_Ill = ossimIpt(ossim::round<int>(m_Ill.x),
ossim::round<int>(m_Ill.y));
}
}
bool ossimImageRenderer::ossimRendererSubRectInfo::isIdentity()const
{
// ossimDpt deltaP1P2 = m_Iul - m_Iur;
// ossimDpt deltaP1P3 = m_Iul - m_Ill;
// ossimDpt deltaViewP1P2 = m_Vul - m_Vur;
// ossimDpt deltaViewP1P3 = m_Vul - m_Vll;
// bool horizontalSigns = ossimGetSign(deltaP1P2.x)==ossimGetSign(deltaViewP1P2.x);
// bool verticalSigns = ossimGetSign(deltaP1P3.y)==ossimGetSign(deltaViewP1P3.y);
// // check first to see if any horizontal or vertical flipping
// //
// if(horizontalSigns && verticalSigns)
// {
// // check scales to see if they are 1
// if(fabs(1-m_ViewToImageScale.x) <= FLT_EPSILON &&
// fabs(1-m_ViewToImageScale.y) <= FLT_EPSILON)
// {
// return true;
// }
// }
double iulDelta = (m_Iul-m_Vul).length();
double iurDelta = (m_Iur-m_Vur).length();
double ilrDelta = (m_Ilr-m_Vlr).length();
double illDelta = (m_Ill-m_Vll).length();
return ((iulDelta <= FLT_EPSILON)&&
(iurDelta <= FLT_EPSILON)&&
(ilrDelta <= FLT_EPSILON)&&
(illDelta <= FLT_EPSILON));
}
bool ossimImageRenderer::ossimRendererSubRectInfo::canBilinearInterpolate() const
//bool ossimImageRenderer::ossimRendererSubRectInfo::canBilinearInterpolate(double error) const
{
bool result = false;
// now check point placement
ossimDpt imageToViewScale = getAbsValueImageToViewScales();
if(imageToViewScale.hasNans()) return true;
ossim_float64 bias = imageToViewScale.length();
// root average of 1x1 = sqrt(2)
const double ROOT_AVERAGE = 1.41421356237309504880;
double testScale = imageToViewScale.length()/ROOT_AVERAGE;
// if there is a large shrink or expansion then just return true.
// You are probably not worried about error in bilinear interpolation
//
if ((testScale > 256) ||
(testScale < 1.0 / 256.0))
{
return true;
}
if (m_VulScale.hasNans() ||
m_VurScale.hasNans() ||
m_VlrScale.hasNans() ||
m_VllScale.hasNans())
{
return result;
}
// std::cout << "ulScale: " << m_VulScale << "\n"
// << "urScale: " << m_VurScale << "\n"
// << "lrScale: " << m_VlrScale << "\n"
// << "llScale: " << m_VllScale << "\n";
// check overage power of 2 variance
// If there is a variance of 1 resolution level
// then we must split further
//
ossim_float64 averageUlScale = m_VulScale.length();
ossim_float64 averageUrScale = m_VurScale.length();
ossim_float64 averageLrScale = m_VlrScale.length();
ossim_float64 averageLlScale = m_VllScale.length();
// std::cout << "_________________________\n";
// std::cout << log(averageUlScale)/(log(2)) << "\n";
// std::cout << log(averageUrScale)/(log(2)) << "\n";
// std::cout << log(averageLrScale)/(log(2)) << "\n";
// std::cout << log(averageLlScale)/(log(2)) << "\n";
ossim_float64 ratio1 = averageUlScale / averageUrScale;
ossim_float64 ratio2 = averageUlScale / averageLrScale;
ossim_float64 ratio3 = averageUlScale / averageLlScale;
// std::cout << "_________________________\n";
// std::cout << "ratio1: " << ratio1 << "\n";
// std::cout << "ratio2: " << ratio2 << "\n";
// std::cout << "ratio3: " << ratio3 << "\n";
// make sure all are within a power of 2 shrink or expand
// which means the range of each ratio should be
// between .5 and 2
result = (((ratio1 < 2) && (ratio1 > 0.5)) &&
((ratio2 < 2) && (ratio2 > 0.5)) &&
((ratio3 < 2) && (ratio3 > 0.5)));
//result = ((diff1<=2)&&(diff2<=2)&&(diff3<=2));
//std::cout << "DIFF1: " << diff1 << std::endl;
//std::cout << "DIFF2: " << diff2 << std::endl;
//std::cout << "DIFF3: " << diff3 << std::endl;
if (result)
{
#if 1
ossimDpt vUpper, vRight, vBottom, vLeft, vCenter;
ossimDpt iUpper, iRight, iBottom, iLeft, iCenter;
ossimDpt testUpper, testRight, testBottom, testLeft, testCenter;
getViewMids(vUpper, vRight, vBottom, vLeft, vCenter);
getImageMids(iUpper, iRight, iBottom, iLeft, iCenter);
// get the model centers for the mid upper left right bottom
m_transform->viewToImage(vCenter, testCenter);
if (testCenter.hasNans())
{
return false;
}
m_transform->viewToImage(vUpper, testUpper);
if (testUpper.hasNans())
{
return false;
}
m_transform->viewToImage(vRight, testRight);
if (testRight.hasNans())
{
return false;
}
m_transform->viewToImage(vBottom, testBottom);
if (testBottom.hasNans())
{
return false;
}
m_transform->viewToImage(vLeft, testLeft);
if (testLeft.hasNans())
{
return false;
}
// now get the model error to bilinear estimate of those points
double errorCheck1 = (testCenter - iCenter).length();
double errorCheck2 = (testUpper - iUpper).length();
double errorCheck3 = (testRight - iRight).length();
double errorCheck4 = (testBottom - iBottom).length();
double errorCheck5 = (testLeft - iLeft).length();
// This is crude but we will do a simple scale to find the R0 delta.
// If the R0 delta is within a pixel then we will return true
// for canBilinear
if (testScale <= FLT_EPSILON)
{
errorCheck1 = 0.0;
errorCheck2 = 0.0;
errorCheck3 = 0.0;
errorCheck4 = 0.0;
errorCheck5 = 0.0;
}
else if(testScale > 1.0)
{
// errorCheck1 *= testScale;
// errorCheck2 *= testScale;
// errorCheck3 *= testScale;
// errorCheck4 *= testScale;
// errorCheck5 *= testScale;
}
else if(testScale > FLT_EPSILON)
{
// errorCheck1 /= testScale;
// errorCheck2 /= testScale;
// errorCheck3 /= testScale;
// errorCheck4 /= testScale;
// errorCheck5 /= testScale;
}
// errorCheck1 = sqrt(errorCheck1);
// errorCheck2 = sqrt(errorCheck2);
// errorCheck3 = sqrt(errorCheck3);
// errorCheck4 = sqrt(errorCheck4);
// errorCheck5 = sqrt(errorCheck5);
// std::cout << "SCALE BIAS: " << testScale << "\n";
// std::cout << "errorCheck1:" << errorCheck1 << "\n";
result = ((errorCheck1 < ossimImageRenderer::m_interpErrorThreshold) &&
(errorCheck2 < ossimImageRenderer::m_interpErrorThreshold) &&
(errorCheck3 < ossimImageRenderer::m_interpErrorThreshold) &&
(errorCheck4 < ossimImageRenderer::m_interpErrorThreshold) &&
(errorCheck5 < ossimImageRenderer::m_interpErrorThreshold));
// std::cout <<"__________________________\n"
// << "ERROR1:" <<errorCheck1 << "\n"
// << "ERROR2:" <<errorCheck2 << "\n"
// << "ERROR3:" <<errorCheck3 << "\n"
// << "ERROR4:" <<errorCheck4 << "\n"
// << "ERROR5:" <<errorCheck5 << "\n"
// << "SENS: " << error << "\n";
#else
ossimDpt vUpper, vRight, vBottom, vLeft, vCenter;
ossimDpt iUpper, iRight, iBottom, iLeft, iCenter;
ossimDpt testCenter;
getViewMids(vUpper, vRight, vBottom, vLeft, vCenter);
getImageMids(iUpper, iRight, iBottom, iLeft, iCenter);
ossimDpt iFullRes(iCenter.x * imageToViewScale.x,
iCenter.y * imageToViewScale.y);
m_transform->viewToImage(vCenter, testCenter);
if (testCenter.hasNans())
{
return false;
}
ossimDpt testFullRes(testCenter.x * imageToViewScale.x,
testCenter.y * imageToViewScale.y);
double errorCheck1 = (testFullRes - iFullRes).length();
iFullRes = ossimDpt(iUpper.x * imageToViewScale.x,
iUpper.y * imageToViewScale.y);
m_transform->viewToImage(vUpper, testCenter);
if (testCenter.hasNans())
{
return false;
}
testFullRes = ossimDpt(testCenter.x * imageToViewScale.x,
testCenter.y * imageToViewScale.y);
double errorCheck2 = (testFullRes - iFullRes).length();
iFullRes = ossimDpt(iRight.x * imageToViewScale.x,
iRight.y * imageToViewScale.y);
m_transform->viewToImage(vRight, testCenter);
if (testCenter.hasNans())
{
return false;
}
testFullRes = ossimDpt(testCenter.x * imageToViewScale.x,
testCenter.y * imageToViewScale.y);
double errorCheck3 = (testFullRes - iFullRes).length();
iFullRes = ossimDpt(iBottom.x * imageToViewScale.x,
iBottom.y * imageToViewScale.y);
m_transform->viewToImage(vBottom, testCenter);
if (testCenter.hasNans())
{
return false;
}
testFullRes = ossimDpt(testCenter.x * imageToViewScale.x,
testCenter.y * imageToViewScale.y);
double errorCheck4 = (testFullRes - iFullRes).length();
iFullRes = ossimDpt(iLeft.x * imageToViewScale.x,
iLeft.y * imageToViewScale.y);
m_transform->viewToImage(vLeft, testCenter);
testFullRes = ossimDpt(testCenter.x * imageToViewScale.x,
testCenter.y * imageToViewScale.y);