irrlicht/tests/testVector3d.cpp

148 lines
4.8 KiB
C++

// Copyright (C) 2008-2009 Colin MacDonald
// No rights reserved: this software is in the public domain.
#include "testUtils.h"
#include "irrlicht.h"
#include <assert.h>
using namespace irr;
using namespace core;
template<class T>
static bool compareVectors(const core::vector3d<T> & compare,
const core::vector3d<T> & with)
{
if(compare != with)
{
logTestString("\nERROR: vector3d %.16f, %.16f, %.16f != vector3d %.16f, %.16f, %.16f\n",
(f64)compare.X, (f64)compare.Y, (f64)compare.Z,
(f64)with.X, (f64)with.Y, (f64)with.Z);
assert(compare == with);
return false;
}
return true;
}
template <class T>
static bool doTests()
{
#define COMPARE_VECTORS(compare, with)\
if(!compareVectors(compare, with)) return false;
vector3d<T> vec(5, 5, 0);
vector3d<T> otherVec(10, 20, 0);
if(!equals(vec.getDistanceFrom(otherVec), (T)15.8113883))
{
logTestString("vector3d::getDistanceFrom() failed\n");
assert(0);
return false;
}
vector3d<T> center(0, 0, 0);
vec.rotateXYBy(45, center);
COMPARE_VECTORS(vec, vector3d<T>(0, (T)7.0710678118654755, 0));
vec.normalize();
COMPARE_VECTORS(vec, vector3d<T>(0, (T)1.0000000461060017, 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.
COMPARE_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);
COMPARE_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);
COMPARE_VECTORS(vec, vector3d<T>(10, (T)10.416752204197017, (T)9.5451947767204359));
vec.set(5, 5, 0);
vec.normalize();
compareVectors(vec, vector3d<T>((T)0.70710681378841400, (T)0.70710681378841400, 0));
vec.set(5, 5, 0);
otherVec.set(10, 20, 40);
vector3d<T> interpolated;
(void)interpolated.interpolate(vec, otherVec, 0.f);
COMPARE_VECTORS(interpolated, otherVec); // 0.f means all the second vector
(void)interpolated.interpolate(vec, otherVec, 0.25f);
COMPARE_VECTORS(interpolated, vector3d<T>((T)8.75, (T)16.25, 30));
(void)interpolated.interpolate(vec, otherVec, 0.75f);
COMPARE_VECTORS(interpolated, vector3d<T>((T)6.25, (T)8.75, 10));
(void)interpolated.interpolate(vec, otherVec, 1.f);
COMPARE_VECTORS(interpolated, vec); // 1.f means all the first vector
interpolated = vec.getInterpolated(otherVec, 0.f);
COMPARE_VECTORS(interpolated, otherVec); // 0.f means all the second vector
interpolated = vec.getInterpolated(otherVec, 0.25f);
COMPARE_VECTORS(interpolated, vector3d<T>((T)8.75, (T)16.25, 30));
interpolated = vec.getInterpolated(otherVec, 0.75f);
COMPARE_VECTORS(interpolated, vector3d<T>((T)6.25, (T)8.75, 10));
interpolated = vec.getInterpolated(otherVec, 1.f);
COMPARE_VECTORS(interpolated, vec); // 1.f means all the first vector
vector3d<T> thirdVec(20, 10, -30);
interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.f);
COMPARE_VECTORS(interpolated, vec); // 0.f means all the 1st vector
interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.25f);
COMPARE_VECTORS(interpolated, vector3d<T>((T)7.8125, (T)10.9375, (T)13.125));
interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.5f);
COMPARE_VECTORS(interpolated, vector3d<T>((T)11.25, (T)13.75, (T)12.5));
interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.75f);
COMPARE_VECTORS(interpolated, vector3d<T>((T)15.3125, (T)13.4375, (T)-1.875));
interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 1.f);
COMPARE_VECTORS(interpolated, thirdVec); // 1.f means all the 3rd vector
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)
{
bool f32Success = doTests<f32>();
if(f32Success)
logTestString("vector3df tests passed\n\n");
else
logTestString("\n*** vector3df tests failed ***\n\n");
bool f64Success = doTests<f64>();
if(f64Success)
logTestString("vector3d<f64> tests passed\n\n");
else
logTestString("\n*** vector3d<f64> tests failed ***\n\n");
bool s32Success = true; // doTests<s32>(); Currently broken: see vector3d<T>& normalize() and const T length = core::reciprocal_squareroot ( (T) (X*X + Y*Y + Z*Z) );
if(s32Success)
logTestString("vector3di tests passed\n\n");
else
logTestString("\n*** vector3di tests failed ***\n\n");
return f32Success && f64Success && s32Success;
}