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Refraction is fully there, with magic fresnel!

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Godzil
2020-02-22 01:27:48 +00:00
parent e45dbad59e
commit 51a6bbebb9
9 changed files with 126 additions and 3 deletions
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34
tests/world_test.cpp
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@@ -391,5 +391,39 @@ TEST(WorldTest, Shade_hit_with_a_transparent_material)
ASSERT_EQ(c, Colour(0.93642, 0.68642, 0.68642));
set_equal_precision(FLT_EPSILON);
}
TEST(WorldTest, Shade_hit_with_a_reflective_transparent_material)
{
World w = DefaultWorld();
Ray r = Ray(Point(0, 0, -3), Vector(0, -sqrt(2)/2, sqrt(2)/2));
Plane floor = Plane();
floor.setTransform(translation(0, -1, 0));
floor.material.transparency = 0.5;
floor.material.reflective = 0.5;
floor.material.refractiveIndex = 1.5;
w.addObject(&floor);
Sphere ball = Sphere();
ball.material.colour = Colour(1, 0, 0);
ball.material.ambient = 0.5;
ball.setTransform(translation(0, -3.5, -0.5));
w.addObject(&ball);
Intersect xs = Intersect();
xs.add(Intersection(sqrt(2), &floor));
Computation comps = xs[0].prepareComputation(r, &xs);
Tuple c = w.shadeHit(comps, 5);
/* Temporary lower the precision */
set_equal_precision(0.00001);
ASSERT_EQ(c, Colour(0.93391, 0.69643, 0.69243));
set_equal_precision(FLT_EPSILON);
}