64 lines
1.3 KiB
C++
64 lines
1.3 KiB
C++
/*
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* DoRayMe - a quick and dirty Raytracer
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* Ray 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 <transformation.h>
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#include <object.h>
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#include <gtest/gtest.h>
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TEST(RayTest, Creating_a_ray_and_querying_it)
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{
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Point origin = Point(1, 2, 3);
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Vector direction = Vector(4, 5, 6);
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Ray r = Ray(origin, direction);
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ASSERT_EQ(r.origin, origin);
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ASSERT_EQ(r.direction, direction);
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}
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TEST(RayTest, Computing_a_point_from_a_distance)
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{
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Ray r = Ray(Point(2, 3, 4), Vector(1, 0, 0));
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ASSERT_EQ(r.position(0), Point(2, 3, 4));
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ASSERT_EQ(r.position(1), Point(3, 3, 4));
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ASSERT_EQ(r.position(-1), Point(1, 3, 4));
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ASSERT_EQ(r.position(2.5), Point(4.5, 3, 4));
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}
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TEST(RayTest, Translating_a_ray)
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{
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Ray r = Ray(Point(1, 2, 3), Vector(0, 1, 0));
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Matrix m = translation(3, 4, 5);
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Shape o = Shape();
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o.setTransform(m);
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Ray r2 = o.transform(r);
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ASSERT_EQ(r2.origin, Point(4, 6, 8));
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ASSERT_EQ(r2.direction, Vector(0, 1, 0));
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}
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TEST(RayTest, Scaling_a_ray)
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{
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Ray r = Ray(Point(1, 2, 3), Vector(0, 1, 0));
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Matrix m = scaling(2, 3, 4);
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Shape o = Shape();
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o.setTransform(m);
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Ray r2 = o.transform(r);
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ASSERT_EQ(r2.origin, Point(2, 6, 12));
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ASSERT_EQ(r2.direction, Vector(0, 3, 0));
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} |