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Add lerp & slerp tests

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This commit is contained in:
Nikita Lisitsa 2021-01-16 22:46:07 +03:00
parent 14c5fda1a7
commit 0944797a3e
2 changed files with 36 additions and 0 deletions
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10
libs/geom/tests/point.cpp
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@ -105,3 +105,13 @@ test_case(geom_point_distance)
expect_equal(distance_sqr(p1, p2), 169.f);
expect_close(distance(p1, p2), 13.f, 1e-6);
}
test_case(geom_point_lerp)
{
point p1{1.f, 2.f, 3.f};
point p2{5.f, 6.f, 7.f};
expect_equal((lerp(p1, p2, 0.25f)), (point{2.f, 3.f, 4.f}));
expect_equal((lerp(p1, p2, 0.5f )), (point{3.f, 4.f, 5.f}));
expect_equal((lerp(p1, p2, 0.75f)), (point{4.f, 5.f, 6.f}));
}

26
libs/geom/tests/vector.cpp
View file

@ -1,6 +1,7 @@
#include <psemek/test/test.hpp>
#include <psemek/geom/vector.hpp>
#include <psemek/geom/math.hpp>
using namespace psemek::geom;
@ -147,3 +148,28 @@ test_case(geom_vector_length)
expect_equal(length_sqr(v), 169.f);
expect_close(length(v), 13.f, 1e-6);
}
test_case(geom_vector_lerp)
{
vector v1{1.f, 2.f, 3.f};
vector v2{5.f, 6.f, 7.f};
expect_equal((lerp(v1, v2, 0.25f)), (vector{2.f, 3.f, 4.f}));
expect_equal((lerp(v1, v2, 0.5f )), (vector{3.f, 4.f, 5.f}));
expect_equal((lerp(v1, v2, 0.75f)), (vector{4.f, 5.f, 6.f}));
}
test_case(geom_vector_slerp)
{
vector v1{1.f, 0.f};
vector v2{0.f, 1.f};
for (int i = 0; i <= 9; ++i)
{
// 10-degree steps
auto s = slerp(v1, v2, i / 9.f);
expect_close((length(s)), 1.f, 1e-6);
expect_gequal((det(v1, s)), 0.f);
expect_gequal((det(s, v2)), 0.f);
}
}