133 lines
4.0 KiB
C++
133 lines
4.0 KiB
C++
// Test the functionality of vector2d<T>, particularly methods that
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// involve calculations done using different precision than <T>.
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// Note that all reference vector2d<T>s are creating using double precision
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// values cast to (T), as we need to test <f64>.
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#include "irrlicht.h"
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#include <assert.h>
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using namespace irr;
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using namespace core;
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template<class T>
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static bool compareVectors(const core::vector2d<T> & compare,
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const core::vector2d<T> & with)
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{
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if(compare != with)
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{
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(void)printf("\nERROR: vector2d %.16f, %.16f != vector2d %.16f, %.16f\n",
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(f64)compare.X, (f64)compare.Y, (f64)with.X, (f64)with.Y);
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assert(compare == with);
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return false;
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}
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return true;
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}
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template <class T>
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static bool doTests()
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{
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#define COMPARE_VECTORS(compare, with)\
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if(!compareVectors(compare, with)) return false;
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vector2d<T> vec(5, 5);
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vector2d<T> otherVec(10, 20);
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if(!equals(vec.getDistanceFrom(otherVec), (T)15.8113883))
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{
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(void)printf("vector2d::getDistanceFrom() failed\n");
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assert(0);
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return false;
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}
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vector2d<T> center(0, 0);
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vec.rotateBy(45, center);
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COMPARE_VECTORS(vec, vector2d<T>(0, (T)7.0710678118654755));
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vec.normalize();
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COMPARE_VECTORS(vec, vector2d<T>(0, (T)1.0000000461060017));
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vec.set(10, 10);
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center.set(5, 5);
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vec.rotateBy(-5, center);
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// -5 means rotate clockwise slightly, so expect the X to increase
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// slightly and the Y to decrease slightly.
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COMPARE_VECTORS(vec, vector2d<T>((T)10.416752204197017, (T)9.5451947767204359));
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vec.set(5, 5);
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vec.normalize();
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compareVectors(vec, vector2d<T>((T)0.70710681378841400, (T)0.70710681378841400));
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vec.set(5, 5);
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otherVec.set(10, 20);
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vector2d<T> interpolated;
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(void)interpolated.interpolate(vec, otherVec, 0.f);
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COMPARE_VECTORS(interpolated, otherVec); // 0.f means all the second vector
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(void)interpolated.interpolate(vec, otherVec, 0.25f);
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COMPARE_VECTORS(interpolated, vector2d<T>((T)8.75, (T)16.25));
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(void)interpolated.interpolate(vec, otherVec, 0.75f);
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COMPARE_VECTORS(interpolated, vector2d<T>((T)6.25, (T)8.75));
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(void)interpolated.interpolate(vec, otherVec, 1.f);
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COMPARE_VECTORS(interpolated, vec); // 1.f means all the first vector
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interpolated = vec.getInterpolated(otherVec, 0.f);
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COMPARE_VECTORS(interpolated, otherVec); // 0.f means all the second vector
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interpolated = vec.getInterpolated(otherVec, 0.25f);
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COMPARE_VECTORS(interpolated, vector2d<T>((T)8.75, (T)16.25));
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interpolated = vec.getInterpolated(otherVec, 0.75f);
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COMPARE_VECTORS(interpolated, vector2d<T>((T)6.25, (T)8.75));
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interpolated = vec.getInterpolated(otherVec, 1.f);
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COMPARE_VECTORS(interpolated, vec); // 1.f means all the first vector
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vector2d<T> thirdVec(20, 10);
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interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.f);
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COMPARE_VECTORS(interpolated, vec); // 0.f means all the 1st vector
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interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.25f);
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COMPARE_VECTORS(interpolated, vector2d<T>((T)7.8125, (T)10.9375));
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interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.5f);
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COMPARE_VECTORS(interpolated, vector2d<T>((T)11.25, (T)13.75));
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interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 0.75f);
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COMPARE_VECTORS(interpolated, vector2d<T>((T)15.3125, (T)13.4375));
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interpolated = vec.getInterpolated_quadratic(otherVec, thirdVec, 1.f);
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COMPARE_VECTORS(interpolated, thirdVec); // 1.f means all the 3rd vector
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return true;
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}
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bool testVector2d(void)
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{
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bool f32Success = doTests<f32>();
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if(f32Success)
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(void)printf("vector2df tests passed\n\n");
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else
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(void)printf("\n*** vector2df tests failed ***\n\n");
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bool f64Success = doTests<f64>();
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if(f64Success)
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(void)printf("vector2d<f64> tests passed\n\n");
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else
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(void)printf("\n*** vector2d<f64> tests failed ***\n\n");
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bool s32Success = doTests<s32>();
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if(s32Success)
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(void)printf("vector2di tests passed\n\n");
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else
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(void)printf("\n*** vector2di tests failed ***\n\n");
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return f32Success && f64Success && s32Success;
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}
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