87 lines
1.8 KiB
C++
87 lines
1.8 KiB
C++
/*
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* DoRayMe - a quick and dirty Raytracer
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* Plane unit tests
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*
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* Created by Manoël Trapier
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* Copyright (c) 2020 986-Studio.
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*
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*/
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#include <ray.h>
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#include <shape.h>
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#include <plane.h>
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#include <material.h>
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#include <transformation.h>
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#include <gtest/gtest.h>
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TEST(PlaneTest, The_normal_of_a_plane_is_constant_everywhere)
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{
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Plane p = Plane();
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Tuple n1 = p.normalAt(Point(0, 0, 0));
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Tuple n2 = p.normalAt(Point(10, 0, -10));
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Tuple n3 = p.normalAt(Point(-5, 0, 0150));
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ASSERT_EQ(n1, Vector(0, 1, 0));
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ASSERT_EQ(n2, Vector(0, 1, 0));
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ASSERT_EQ(n3, Vector(0, 1, 0));
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}
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TEST(PlaneTest, Intersect_with_a_ray_parallel_to_the_plane)
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{
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Plane p = Plane();
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Ray r = Ray(Point(0, 10, 0), Vector(0, 0, 1));
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Intersect xs = p.intersect(r);
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ASSERT_EQ(xs.count(), 0);
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}
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TEST(PlaneTest, Intersect_with_a_coplanar_ray)
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{
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Plane p = Plane();
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Ray r = Ray(Point(0, 0, 0), Vector(0, 0, 1));
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Intersect xs = p.intersect(r);
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ASSERT_EQ(xs.count(), 0);
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}
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TEST(PlaneTest, A_ray_intersecting_a_plane_from_above)
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{
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Plane p = Plane();
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Ray r = Ray(Point(0, 1, 0), Vector(0, -1, 0));
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Intersect xs = p.intersect(r);
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ASSERT_EQ(xs.count(), 1);
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ASSERT_EQ(xs[0].t, 1);
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ASSERT_EQ(xs[0].object, &p);
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}
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TEST(PlaneTest, A_ray_intersecting_a_plane_from_below)
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{
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Plane p = Plane();
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Ray r = Ray(Point(0, -1, 0), Vector(0, 1, 0));
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Intersect xs = p.intersect(r);
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ASSERT_EQ(xs.count(), 1);
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ASSERT_EQ(xs[0].t, 1);
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ASSERT_EQ(xs[0].object, &p);
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}
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TEST(PlaneTest, The_bounding_box_of_a_plane)
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{
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Plane t = Plane();
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BoundingBox res = t.getBounds();
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ASSERT_FALSE(res.min.isRepresentable());
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ASSERT_FALSE(res.max.isRepresentable());
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}
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TEST(PlaneTest, A_plane_have_infinite__bounds)
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{
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Plane t = Plane();
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ASSERT_FALSE(t.haveFiniteBounds());
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} |