DGtal  1.4.beta
testLpMetric.cpp File Reference
#include <iostream>
#include "DGtal/base/Common.h"
#include "ConfigTest.h"
#include "DGtalCatch.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/geometry/volumes/distance/LpMetric.h"
#include "DGtal/geometry/volumes/distance/CMetricSpace.h"
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 TEST_CASE ("Testing LpMetric")

Detailed Description

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David Coeurjolly (david.nosp@m..coe.nosp@m.urjol.nosp@m.ly@l.nosp@m.iris..nosp@m.cnrs.nosp@m..fr ) Laboratoire d'InfoRmatique en Image et Systemes d'information - LIRIS (CNRS, UMR 5205), CNRS, France

Functions for testing class LpMetric.

This file is part of the DGtal library.

Definition in file testLpMetric.cpp.

Function Documentation


TEST_CASE ( "Testing LpMetric )

Definition at line 46 of file testLpMetric.cpp.

47 {
49  BOOST_CONCEPT_ASSERT(( concepts::CMetricSpace<LpMetric<Z2i::Space>> ));
51  LpMetric<Z2i::Space> l2_2D(2.0);
52  LpMetric<Z3i::Space> l2_3D(2.0);
53  LpMetric<Z2i::Space> l55_2D(5.5);
54  Z2i::Space::RealPoint a(0,0), b(1.0,1.0), c(0.5,0.5);
55  Z3i::Space::RealPoint aa(0,0,0), bb(1.0,1.0,1.0);
57  SECTION("Testing LpMetric distance values")
58  {
59  CAPTURE( l55_2D) ;
60  REQUIRE( l2_2D.rawDistance(a,b) == Approx(2.0) );
61  REQUIRE( l2_3D.rawDistance(aa,bb) == Approx(3.0) );
62  REQUIRE( l2_2D(a,b) == Approx(std::sqrt(2.0)) );
63  REQUIRE( l55_2D(a,b) == Approx(1.1343125) );
64  REQUIRE( l2_2D.closest(a,c,b) == DGtal::ClosestFIRST );
65  REQUIRE( l2_2D.closest(c,a,b) == DGtal::ClosestBOTH );
66  }
67 }
Aim: implements l_p metrics.
Definition: LpMetric.h:75
Aim: Implements basic operations that will be used in Point and Vector classes.
Definition: PointVector.h:593
@ ClosestBOTH
Definition: Common.h:146
@ ClosestFIRST
Definition: Common.h:146
Aim: defines the concept of metric spaces.
Definition: CMetricSpace.h:125
SECTION("Testing constant forward iterators")

References CAPTURE(), DGtal::LpMetric< TSpace >::closest(), DGtal::ClosestBOTH, DGtal::ClosestFIRST, DGtal::LpMetric< TSpace >::rawDistance(), REQUIRE(), and SECTION().