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/*=========================================================================
Program: Visualization Toolkit
Module: TestVector.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/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 notice for more information.
=========================================================================*/
#include "vtkSetGet.h"
#include "vtkVector.h"
#include "vtkVectorOperators.h"
#include "vtkMathUtilities.h"
//----------------------------------------------------------------------------
int TestVector(int, char*[])
{
// Store up any errors, return non-zero if something fails.
int retVal = 0;
// Test out the general vector data types, give nice API and great memory use
vtkVector2i vec2i;
int arr2i[2] = { 0, 0 };
vec2i.Set(arr2i[0], arr2i[1]);
if (sizeof(vec2i) != sizeof(arr2i))
{
// The two should be the same size and memory layout - error out if not
cerr << "vtkVector2i should be the same size as int[2]." << endl
<< "sizeof(vec2i) = " << sizeof(vec2i) << endl
<< "sizeof(int[2]) = " << sizeof(arr2i) << endl;
++retVal;
}
vtkVector<float, 3> vector3f;
if (vector3f.GetSize() != 3)
{
cerr << "Incorrect size of vector3f, should be 3, but is "
<< vector3f.GetSize() << endl;
++retVal;
}
// Test out vtkVector3i and ensure the various access methods are the same
vtkVector3i vec3i(0, 6, 9);
if (vec3i.GetX() != vec3i[0] || vec3i.GetX() != 0)
{
cerr << "vec3i.GetX() should equal vec3i.GetData()[0] which should equal 0."
<< "\nvec3i.GetX() = " << vec3i.GetX() << endl
<< "vec3i[0] = " << vec3i[0] << endl;
++retVal;
}
if (vec3i.GetY() != vec3i[1] || vec3i.GetY() != 6)
{
cerr << "vec3i.GetY() should equal vec3i.GetData()[1] which should equal 6."
<< "\nvec3i.GetY() = " << vec3i.GetY() << endl
<< "vec3i[1] = " << vec3i[1] << endl;
++retVal;
}
if (vec3i.GetZ() != vec3i[2] || vec3i.GetZ() != 9)
{
cerr << "vec3i.GetZ() should equal vec3i.GetData()[2] which should equal 9."
<< "\nvec3i.GetZ() = " << vec3i.GetZ() << endl
<< "vec3i[2] = " << vec3i[2] << endl;
++retVal;
}
// Assign the data to an int array and ensure the two ways of referencing are
// the same.
int *intPtr = vec3i.GetData();
for (int i = 0; i < 3; ++i)
{
if (vec3i[i] != intPtr[i] || vec3i(i) != vec3i[i])
{
cerr << "Error: vec3i[i] != intPtr[i]" << endl
<< "vec3i[i] = " << vec3i[i] << endl
<< "intPtr[i] = " << intPtr[i] << endl;
++retVal;
}
}
// Test out casting...
vtkVector<float, 3> castVec = vec3i.Cast<float>();
vtkVector3d castVecd(castVec.Cast<double>().GetData());
if (castVecd[0] < -0.0000001 || castVecd[0] > 0.0000001)
{
// Then the number did not make it through within reasonable precision.
cerr << "Error: castVecd value incorrect. Should be ~0.0 for component 1."
<< "\ncastVecd[0] = " << castVecd[0] << endl;
++retVal;
}
cout << "castVecd[0] = " << castVecd[0] << endl;
// Test the normalize and normalized functions.
vtkVector3d normy(1, 2, 3);
vtkVector3d normed = normy.Normalized();
double dotted = normy.Dot(normed);
if (!vtkMathUtilities::FuzzyCompare(dotted, 3.74166, 0.0001))
{
cerr << "The dot product of " << normy << " and " << normed << " was "
<< dotted << ", expected 3.74166." << endl;
++retVal;
}
if (!normed.Compare(vtkVector3d(0.267261, 0.534522, 0.801784), 0.0001))
{
cerr << "Error vtkVector3d::Normalized() failed: " << normed << endl;
++retVal;
}
normy.Normalize();
if (!normy.Compare(normed, 0.0001))
{
cerr << "Error vtkVector3d::Normalize() failed: " << normy << endl;
}
if (!vtkMathUtilities::FuzzyCompare(normy.Norm(), 1.0, 0.0001))
{
cerr << "Normalized length should always be ~= 1.0, value is "
<< normy.Norm() << endl;
++retVal;
}
if (!vtkMathUtilities::FuzzyCompare(dotted, 3.74166, 0.0001))
{
cerr << "The dot product of "
<< normy.Norm() << endl;
++retVal;
}
if (!vtkMathUtilities::FuzzyCompare(normy.Dot(normed), 1.0, 0.0001))
{
cerr << "The dot product of " << normy << " and " << normed << " was "
<< normy.Dot(normed) << ", expected 1.0." << endl;
++retVal;
}
// Some cross product stuff now...
if (!normy.Cross(normed).Compare(vtkVector3d(0, 0, 0), 0.0001))
{
cerr << normy << " cross " << normed << " expected to be 0, got "
<< normy.Cross(normed) << endl;
++retVal;
}
if (!normy.Cross(vtkVector3d(0, 1, 0)).Compare(vtkVector3d(-0.801784, 0, 0.267261),
0.0001))
{
cerr << normy << " cross (0, 1, 0) expected to be (-0.801784, 0, 0.267261), got "
<< normy.Cross(normed) << endl;
++retVal;
}
return retVal;
}
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