irrlicht/tests/testVector3d.cpp

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// Copyright (C) 2008-2012 Colin MacDonald
// No rights reserved: this software is in the public domain.
#include "testUtils.h"
using namespace irr;
using namespace core;
#define EQUAL_VECTORS(compare, with)\
if(!equalVectors(cmp_equal<core::vector3d<T> >(compare), with)) {assert(false); return false;}
#define LESS_VECTORS(compare, with)\
if(!equalVectors(cmp_less<core::vector3d<T> >(compare), with)) return false;
#define LESS_EQUAL_VECTORS(compare, with)\
if(!equalVectors(cmp_less_equal<core::vector3d<T> >(compare), with)) return false;
#define MORE_VECTORS(compare, with)\
if(!equalVectors(cmp_more<core::vector3d<T> >(compare), with)) return false;
#define MORE_EQUAL_VECTORS(compare, with)\
if(!equalVectors(cmp_more_equal<core::vector3d<T> >(compare), with)) return false;
// check if the vector contains a NAN (a==b is guaranteed to return false in this case)
template<class T>
static bool is_nan(const core::vector3d<T> &vec )
{
return ( !(vec.X == vec.X)
|| !(vec.Y == vec.Y)
|| !(vec.Z == vec.Z) );
}
template<class T>
struct cmp_less
{
cmp_less(const T& a) : val(a) {}
bool operator()(const T& other) const
{
return val<other;
}
const char* getName() const {return "<";}
const T val;
};
template<class T>
struct cmp_less_equal
{
cmp_less_equal(const T& a) : val(a) {}
bool operator()(const T& other) const
{
return val<=other;
}
const char* getName() const {return "<=";}
const T val;
};
template<class T>
struct cmp_more
{
cmp_more(const T& a) : val(a) {}
bool operator()(const T& other) const
{
return val>other;
}
const char* getName() const {return ">";}
const T val;
};
template<class T>
struct cmp_more_equal
{
cmp_more_equal(const T& a) : val(a) {}
bool operator()(const T& other) const
{
return val>=other;
}
const char* getName() const {return ">=";}
const T val;
};
template<class T>
struct cmp_equal
{
cmp_equal(const T& a) : val(a) {}
bool operator()(const T& other) const
{
return val.equals(other);
}
const char* getName() const {return "==";}
const T val;
};
template<class S, class T>
static bool equalVectors(const S& compare,
const core::vector3d<T> & with)
{
if (!compare(with))
{
logTestString("\nERROR: vector3d %.16f, %.16f, %.16f %s vector3d %.16f, %.16f, %.16f\n",
(f64)compare.val.X, (f64)compare.val.Y, (f64)compare.val.Z, compare.getName(),
(f64)with.X, (f64)with.Y, (f64)with.Z);
assert_log(compare(with));
return false;
}
return true;
}
template <class T>
static bool checkInterpolation()
{
core::vector3d<T> vec(5, 5, 0);
core::vector3d<T> otherVec(10, 20, 40);
vector3d<T> interpolated;
(void)interpolated.interpolate(vec, otherVec, 0.f);
EQUAL_VECTORS(interpolated, otherVec); // 0.f means all the second vector
(void)interpolated.interpolate(vec, otherVec, 0.25f);
EQUAL_VECTORS(interpolated, vector3d<T>((T)8.75, (T)16.25, 30));
(void)interpolated.interpolate(vec, otherVec, 0.75f);
EQUAL_VECTORS(interpolated, vector3d<T>((T)6.25, (T)8.75, 10));
(void)interpolated.interpolate(vec, otherVec, 1.f);
EQUAL_VECTORS(interpolated, vec); // 1.f means all the first vector
interpolated = vec.getInterpolated(otherVec, 0.f);
EQUAL_VECTORS(interpolated, otherVec); // 0.f means all the second vector
interpolated = vec.getInterpolated(otherVec, 0.25f);
EQUAL_VECTORS(interpolated, vector3d<T>((T)8.75, (T)16.25, 30));
interpolated = vec.getInterpolated(otherVec, 0.75f);
EQUAL_VECTORS(interpolated, vector3d<T>((T)6.25, (T)8.75, 10));
interpolated = vec.getInterpolated(otherVec, 1.f);
EQUAL_VECTORS(interpolated, vec); // 1.f means all the first vector
vector3d<T> thirdVec(20, 10, -30);
interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.f);
EQUAL_VECTORS(interpolated, vec); // 0.f means all the 1st vector
interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.25f);
EQUAL_VECTORS(interpolated, vector3d<T>((T)7.8125, (T)10.9375, (T)13.125));
interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.5f);
EQUAL_VECTORS(interpolated, vector3d<T>((T)11.25, (T)13.75, (T)12.5));
interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.75f);
EQUAL_VECTORS(interpolated, vector3d<T>((T)15.3125, (T)13.4375, (T)-1.875));
interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 1.f);
EQUAL_VECTORS(interpolated, thirdVec); // 1.f means all the 3rd vector
return true;
}
template <class T>
static bool checkAngleCalculations()
{
core::vector3d<T> vec(5, 5, 0);
EQUAL_VECTORS(vec.getHorizontalAngle(), vector3d<T>(315, (T)90.0, 0));
EQUAL_VECTORS(vec.getSphericalCoordinateAngles(), vector3d<T>((T)45.0, 0, 0));
return true;
}
template <class T>
static bool checkRotations()
{
core::vector3d<T> vec(5, 5, 0);
vector3d<T> center(0, 0, 0);
vec.rotateXYBy(45, center);
EQUAL_VECTORS(vec, vector3d<T>(0, (T)7.0710678118654755, 0));
vec.normalize();
// TODO: This breaks under Linux/gcc due to FP differences, but is no bug
if (((T)0.5f)>0.f)
EQUAL_VECTORS(vec, vector3d<T>(0, (T)1.0, 0));
vec.set(10, 10, 10);
center.set(5, 5, 10);
vec.rotateXYBy(-5, center);
// -5 means rotate clockwise slightly, so expect the X to increase
// slightly and the Y to decrease slightly.
EQUAL_VECTORS(vec, vector3d<T>((T)10.416752204197017, (T)9.5451947767204359, 10));
vec.set(10, 10, 10);
center.set(5, 10, 5);
vec.rotateXZBy(-5, center);
EQUAL_VECTORS(vec, vector3d<T>((T)10.416752204197017, 10, (T)9.5451947767204359));
vec.set(10, 10, 10);
center.set(10, 5, 5);
vec.rotateYZBy(-5, center);
EQUAL_VECTORS(vec, vector3d<T>(10, (T)10.416752204197017, (T)9.5451947767204359));
vec.set(5, 5, 0);
vec.normalize();
EQUAL_VECTORS(vec, vector3d<T>((T)0.70710681378841400, (T)0.70710681378841400, 0));
return true;
}
template <class T>
static bool doTests()
{
vector3d<T> vec(-5, 5, 0);
vector3d<T> otherVec((T)-5.1, 5, 0);
if(!vec.equals(otherVec, (T)0.1))
{
logTestString("vector3d::equals failed\n");
assert_log(0);
return false;
}
otherVec = vector3d<T>(1,2,3);
otherVec[0] = vec[0];
otherVec[1] = vec[1];
otherVec[2] = vec[2];
if(!vec.equals(otherVec))
{
logTestString("vector3d::operator[] failed\n");
assert_log(0);
return false;
}
vec.set(5, 5, 0);
otherVec.set(10, 20, 0);
if(!equals(vec.getDistanceFrom(otherVec), (T)15.8113883))
{
logTestString("vector3d::getDistanceFrom() failed\n");
assert_log(0);
return false;
}
if (!checkRotations<T>())
return false;
if (!checkInterpolation<T>())
return false;
if (!checkAngleCalculations<T>())
return false;
vec.set(0,0,0);
vec.setLength(99);
if ( is_nan(vec) )
return false;
core::vector3d<T> zeroZero(0, 0, 0);
core::vector3d<T> oneOne(1, 1, 1);
// Check if comparing (0.0, 0.0, 0.0) with (1.0, 1.0, 1.0) returns false.
if(zeroZero == oneOne)
{
logTestString("\nERROR: vector3d %.16f, %.16f, %.16f == vector3d %.16f, %.16f, %.16f\n",
(f64)zeroZero.X, (f64)zeroZero.Y, (f64)zeroZero.Z,
(f64)oneOne.X, (f64)oneOne.Y, (f64)oneOne.Z);
return false;
}
vec.set(5, 5, 0);
otherVec.set(10, 20, 40);
LESS_VECTORS(vec, otherVec);
LESS_EQUAL_VECTORS(vec, otherVec);
MORE_VECTORS(otherVec, vec);
MORE_EQUAL_VECTORS(otherVec, vec);
vec.set(-1,-1,1);
otherVec.set(1,-1,1);
LESS_VECTORS(vec, otherVec);
LESS_EQUAL_VECTORS(vec, otherVec);
MORE_VECTORS(otherVec, vec);
MORE_EQUAL_VECTORS(otherVec, vec);
LESS_EQUAL_VECTORS(vec, vec);
MORE_EQUAL_VECTORS(vec, vec);
return true;
}
/** Test the functionality of vector3d<T>, particularly methods that
involve calculations done using different precision than <T>.
Note that all reference vector3d<T>s are creating using double precision
values cast to (T), as we need to test <f64>. */
bool testVector3d(void)
{
const bool f32Success = doTests<f32>();
if (f32Success)
logTestString("vector3df tests passed\n\n");
else
logTestString("\n*** vector3df tests failed ***\n\n");
const bool f64Success = doTests<f64>();
if (f64Success)
logTestString("vector3d<f64> tests passed\n\n");
else
logTestString("\n*** vector3d<f64> tests failed ***\n\n");
const bool s32Success = doTests<s32>();
if (s32Success)
logTestString("vector3di tests passed\n\n");
else
logTestString("\n*** vector3di tests failed ***\n\n");
return f32Success && f64Success && s32Success;
}