DGtal  1.1.0
Functions
examplePointFunctorHolder.cpp File Reference

An example file for DGtal::functors::PointFunctorHolder. More...

#include <algorithm>
#include "DGtal/base/Common.h"
#include "DGtal/helpers/StdDefs.h"
#include "DGtal/kernel/PointFunctorHolder.h"
#include "DGtal/geometry/volumes/distance/DistanceTransformation.h"
#include "DGtal/io/boards/Board2D.h"
#include "DGtal/io/colormaps/HueShadeColorMap.h"
#include <boost/algorithm/minmax_element.hpp>
Include dependency graph for examplePointFunctorHolder.cpp:

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Functions

int main ()
 

Detailed Description

An example file for DGtal::functors::PointFunctorHolder.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Author
Roland Denis (denis.nosp@m.@mat.nosp@m.h.uni.nosp@m.v-ly.nosp@m.on1.f.nosp@m.r ) CNRS, Institut Camille Jordan (UMR 5208), Université Lyon 1, France
Date
2018/11/23

This file is part of the DGtal library.

Definition in file examplePointFunctorHolder.cpp.

Function Documentation

◆ main()

int main ( )

[examplePointFunctorHolder-hold]

[examplePointFunctorHolder-hold]

[examplePointFunctorHolder-DT]

[examplePointFunctorHolder-DT]

[examplePointFunctorHolder-DTvis]

[examplePointFunctorHolder-DTvis]

Definition at line 52 of file examplePointFunctorHolder.cpp.

53 {
55  auto mickey = functors::holdPointFunctor<Z2i::Point>(
56  [] ( Z2i::Point const& pt ) {
57  return
58  (pt - Z2i::Point(0, -5)).norm() > 3
59  && ( pt.norm() <= 20
60  || (pt - Z2i::Point(-18,21)).norm() <= 10
61  || (pt - Z2i::Point( 18,21)).norm() <= 10
62  );
63  });
65 
67  Z2i::Domain domain( Z2i::Point(-35,-25), Z2i::Point(35, 35) );
68 
69  using DTL2 = DistanceTransformation<Z2i::Space, decltype(mickey), Z2i::L2Metric>;
70 
71  DTL2 dt( domain, mickey, Z2i::l2Metric );
73 
74 
76  DTL2::Value maxDT = *boost::first_max_element( dt.constRange().begin(), dt.constRange().end() );
77  using HueTwice = HueShadeColorMap<DTL2::Value, 1>;
78 
79  Board2D aBoard;
80  aBoard << domain;
81  Display2DFactory::drawImage<HueTwice>(aBoard, dt, 0, maxDT);
82  aBoard.saveEPS("examplePointFunctorHolder.eps");
84 
85  return 0;
86 
87 }

References domain, DGtal::Z2i::l2Metric, DGtal::PointVector< dim, TEuclideanRing, TContainer >::norm(), and LibBoard::Board::saveEPS().

DGtal::HyperRectDomain< Space >
DGtal::HueShadeColorMap
Aim: This class template may be used to (linearly) convert scalar values in a given range into a colo...
Definition: HueShadeColorMap.h:91
DGtal::PointVector::norm
double norm(const NormType type=L_2) const
DGtal::Board2D
Aim: This class specializes a 'Board' class so as to display DGtal objects more naturally (with <<)....
Definition: Board2D.h:71
DGtal::ExactPredicateLpSeparableMetric
Aim: implements separable l_p metrics with exact predicates.
Definition: ExactPredicateLpSeparableMetric.h:88
LibBoard::Board::saveEPS
void saveEPS(const char *filename, PageSize size=Board::BoundingBox, double margin=10.0) const
Definition: Board.cpp:805
domain
Domain domain
Definition: testProjection.cpp:88
DGtal::PointVector< dim, Integer >
Space
SpaceND< 2 > Space
Definition: testSimpleRandomAccessRangeFromPoint.cpp:42
DGtal::DistanceTransformation
Aim: Implementation of the linear in time distance transformation for separable metrics.
Definition: DistanceTransformation.h:100
Value
double Value
Definition: testSimpleRandomAccessRangeFromPoint.cpp:38