1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkSphereSignedDistanceFunctionTest.cxx,v $
Language: C++
Date: $Date: 2003-09-10 14:30:10 $
Version: $Revision: 1.4 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include "itkSphereSignedDistanceFunction.h"
/**
* This module tests the functionaliyt of the SphereSignedDistanceFunction
* class and its superclass ShapeSignedDistanceFunction.
*
* In particular, it creates a SphereSignedDistanceFunction object
* cast it to a generic ShapeSignedDistanceFunction object.
*
* The shape parameters are set at radius of 5 and center of (0,0).
* The signed distance is evaluated at several point and compared
* to expected values. The test fails if the evaluated results is
* not within a certain tolerance of the expected results.
*
*/
int itkSphereSignedDistanceFunctionTest( int, char *[])
{
typedef double CoordRep;
const unsigned int Dimension = 2;
typedef itk::ShapeSignedDistanceFunction<CoordRep,Dimension> FunctionType;
typedef itk::SphereSignedDistanceFunction<CoordRep,Dimension> SphereFunctionType;
typedef FunctionType::PointType PointType;
typedef FunctionType::ParametersType ParametersType;
SphereFunctionType::Pointer sphere = SphereFunctionType::New();
// cast it to a generic function
FunctionType::Pointer function = dynamic_cast<FunctionType *>( sphere.GetPointer() );
sphere = NULL;
// we must initialize the function before use
function->Initialize();
ParametersType parameters( function->GetNumberOfParameters() );
parameters.Fill( 0.0 );
parameters[0] = 5.0;
function->SetParameters( parameters );
std::cout << "Parameters: " << function->GetParameters() << std::endl;
PointType point;
function->Print( std::cout );
std::cout << function->FunctionType::GetNameOfClass() << std::endl;
for ( double p = 0.0; p < 10.0; p += 1.0 )
{
point.Fill( p );
FunctionType::OutputType output = function->Evaluate( point );
std::cout << "f( " << point << ") = " << output << std::endl;
// check results
CoordRep expected = p * vcl_sqrt( 2.0 ) - parameters[0];
if( vnl_math_abs( output - expected ) > 1e-9 )
{
std::cout << "But expected value is: " << expected << std::endl;
return EXIT_FAILURE;
}
}
std::cout << "Test passed." << std::endl;
return EXIT_SUCCESS;
}
|
