/**
* Example of a test. To be completed.
*
*/
bool testTrueLocalEstimator(const std::string &filename)
{
trace.info() << "Reading GridCurve " << endl;
ifstream instream; // input stream
instream.open (filename.c_str(), ifstream::in);
typedef KhalimskySpaceND<2> Kspace; //space
GridCurve<Kspace> c;
c.initFromVectorStream(instream); //building grid curve
typedef GridCurve<Kspace >::PointsRange Range;//range
Range r = c.getPointsRange();//building range
typedef Ball2D<Z2i::Space> Shape;
typedef GridCurve<KhalimskySpaceND<2> >::PointsRange Range;
typedef Range::ConstIterator ConstIteratorOnPoints;
typedef ParametricShapeCurvatureFunctor< Shape > Curvature;
typedef ParametricShapeTangentFunctor< Shape > Tangent;
typedef ParametricShapeArcLengthFunctor< Shape > Length;
Shape ball(Z2i::Point(0,0), 30);
TrueLocalEstimatorOnPoints< ConstIteratorOnPoints, Shape, Curvature > curvatureEstimator;
TrueLocalEstimatorOnPoints< ConstIteratorOnPoints, Shape, Tangent > tangentEstimator;
TrueGlobalEstimatorOnPoints< ConstIteratorOnPoints, Shape, Length > lengthEstimator;
curvatureEstimator.init( 1, r.begin(), r.end(), &ball, true);
tangentEstimator.init( 1, r.begin(), r.end(), &ball, true);
ConstIteratorOnPoints it = r.begin();
// ConstIteratorOnPoints it2 = r.begin()+15;
ConstIteratorOnPoints it2 = it;
for ( int compteur = 0; compteur < 15; ++compteur ) ++it2;
lengthEstimator.init( 1, it, it2, &ball, true);
trace.info() << "Current point = "<<*it<<std::endl;
trace.info() << "Current point+15 = "<<*it2<<std::endl;
trace.info() << "Eval curvature (begin, h=1) = "<< curvatureEstimator.eval(it2)<<std::endl;
trace.info() << "Eval tangent (begin, h=1) = "<< tangentEstimator.eval(it2)<<std::endl;
trace.info() << "Eval length ( h=1) = "<< lengthEstimator.eval(it,it2)<<std::endl;
return true;
}
bool
lengthEstimators( const std::string & /*name*/,
Shape & aShape,
double h )
{
// Types
typedef typename Space::Point Point;
typedef typename Space::Vector Vector;
typedef typename Space::RealPoint RealPoint;
typedef typename Space::Integer Integer;
typedef HyperRectDomain<Space> Domain;
typedef KhalimskySpaceND<Space::dimension,Integer> KSpace;
typedef typename KSpace::SCell SCell;
typedef typename GridCurve<KSpace>::PointsRange PointsRange;
typedef typename GridCurve<KSpace>::ArrowsRange ArrowsRange;
// Digitizer
GaussDigitizer<Space,Shape> dig;
dig.attach( aShape ); // attaches the shape.
Vector vlow(-1,-1); Vector vup(1,1);
dig.init( aShape.getLowerBound()+vlow, aShape.getUpperBound()+vup, h );
Domain domain = dig.getDomain();
// Create cellular space
KSpace K;
bool ok = K.init( dig.getLowerBound(), dig.getUpperBound(), true );
if ( ! ok )
{
std::cerr << "[lengthEstimators]"
<< " error in creating KSpace." << std::endl;
return false;
}
try {
// Extracts shape boundary
SurfelAdjacency<KSpace::dimension> SAdj( true );
SCell bel = Surfaces<KSpace>::findABel( K, dig, 10000 );
// Getting the consecutive surfels of the 2D boundary
std::vector<Point> points;
Surfaces<KSpace>::track2DBoundaryPoints( points, K, SAdj, dig, bel );
// Create GridCurve
GridCurve<KSpace> gridcurve;
gridcurve.initFromVector( points );
// Ranges
ArrowsRange ra = gridcurve.getArrowsRange();
PointsRange rp = gridcurve.getPointsRange();
// Estimations
typedef typename PointsRange::ConstIterator ConstIteratorOnPoints;
typedef ParametricShapeArcLengthFunctor< Shape > Length;
TrueGlobalEstimatorOnPoints< ConstIteratorOnPoints, Shape, Length > trueLengthEstimator;
trueLengthEstimator.init( h, rp.begin(), rp.end(), &aShape, gridcurve.isClosed());
L1LengthEstimator< typename ArrowsRange::ConstCirculator > l1length;
DSSLengthEstimator< typename PointsRange::ConstCirculator > DSSlength;
MLPLengthEstimator< typename PointsRange::ConstIterator > MLPlength;
FPLengthEstimator< typename PointsRange::ConstIterator > FPlength;
BLUELocalLengthEstimator< typename ArrowsRange::ConstIterator > BLUElength;
RosenProffittLocalLengthEstimator< typename ArrowsRange::ConstIterator > RosenProffittlength;
// Output
double trueValue = trueLengthEstimator.eval();
double l1, blue, rosen,dss,mlp,fp;
double Tl1, Tblue, Trosen,Tdss,Tmlp,Tfp;
Clock c;
//Length evaluation & timing
c.startClock();
l1length.init(h, ra.c(), ra.c());
l1 = l1length.eval();
Tl1 = c.stopClock();
c.startClock();
BLUElength.init(h, ra.begin(), ra.end(), gridcurve.isClosed());
blue = BLUElength.eval();
Tblue = c.stopClock();
c.startClock();
RosenProffittlength.init(h, ra.begin(), ra.end(), gridcurve.isClosed());
rosen = RosenProffittlength.eval();
Trosen = c.stopClock();
c.startClock();
DSSlength.init(h, rp.c(), rp.c());
dss = DSSlength.eval();
Tdss = c.stopClock();
c.startClock();
MLPlength.init(h, rp.begin(), rp.end(), gridcurve.isClosed());
mlp = MLPlength.eval();
Tmlp = c.stopClock();
c.startClock();
FPlength.init(h, rp.begin(), rp.end(), gridcurve.isClosed());
fp = FPlength.eval();
Tfp = c.stopClock();
std::cout << std::setprecision( 15 ) << h << " " << rp.size() << " " << trueValue
<< " " << l1
<< " " << blue
<< " " << rosen
<< " " << dss
<< " " << mlp
<< " " << fp
<< " " << Tl1
<< " " << Tblue
<< " " << Trosen
<< " " << Tdss
<< " " << Tmlp
<< " " << Tfp
<< std::endl;
return true;
}
catch ( InputException e )
{
std::cerr << "[lengthEstimators]"
<< " error in finding a bel." << std::endl;
return false;
}
}