117 lines
3.1 KiB
C++
117 lines
3.1 KiB
C++
/*
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* DoRayMe - a quick and dirty Raytracer
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* Material 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 <material.h>
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#include <math.h>
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#include <colour.h>
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#include <testshape.h>
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#include <gtest/gtest.h>
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TEST(MaterialTest, The_default_material)
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{
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Material m = Material();
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ASSERT_EQ(m.colour, Colour(1, 1, 1));
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ASSERT_EQ(m.ambient, 0.1);
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ASSERT_EQ(m.diffuse, 0.9);
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ASSERT_EQ(m.specular, 0.9);
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ASSERT_EQ(m.shininess, 200.0);
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}
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// This is used by the next tests
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static Material m = Material();
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static Point position = Point(0, 0, 0);
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TEST(MaterialTest, Lighting_with_the_eye_between_the_light_and_the_surface)
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{
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TestShape t = TestShape();
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Vector eyev = Vector(0, 0, -1);
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Vector normalv = Vector(0, 0, -1);
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Light light = Light(POINT_LIGHT, Point(0, 0, -10), Colour(1, 1, 1));
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Colour result = m.lighting(light, position, eyev, normalv, &t);
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ASSERT_EQ(result, Colour(1.9, 1.9, 1.9));
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}
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TEST(MaterialTest, Lighting_with_the_eye_between_the_light_and_the_surface_eye_offset_by_45)
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{
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TestShape t = TestShape();
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Vector eyev = Vector(0, -sqrt(2)/2, -sqrt(2)/2);
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Vector normalv = Vector(0, 0, -1);
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Light light = Light(POINT_LIGHT, Point(0, 0, -10), Colour(1, 1, 1));
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Colour result = m.lighting(light, position, eyev, normalv, &t);
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ASSERT_EQ(result, Colour(1.0, 1.0, 1.0));
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}
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TEST(MaterialTest, Lighting_with_the_eye_opposite_surface_light_offset_45)
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{
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TestShape t = TestShape();
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Vector eyev = Vector(0, 0, -1);
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Vector normalv = Vector(0, 0, -1);
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Light light = Light(POINT_LIGHT, Point(0, 10, -10), Colour(1, 1, 1));
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Colour result = m.lighting(light, position, eyev, normalv, &t);
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set_equal_precision(0.0001);
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ASSERT_EQ(result, Colour(0.7364, 0.7364, 0.7364));
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set_equal_precision(FLT_EPSILON);
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}
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TEST(MaterialTest, Lighting_with_the_eye_in_the_path_of_the_reflection_vector)
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{
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TestShape t = TestShape();
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Vector eyev = Vector(0, -sqrt(2)/2, -sqrt(2)/2);
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Vector normalv = Vector(0, 0, -1);
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Light light = Light(POINT_LIGHT, Point(0, 10, -10), Colour(1, 1, 1));
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Colour result = m.lighting(light, position, eyev, normalv, &t);
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set_equal_precision(0.0001);
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ASSERT_EQ(result, Colour(1.6364, 1.6364, 1.6364));
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set_equal_precision(FLT_EPSILON);
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}
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TEST(MaterialTest, Lighting_with_the_light_behind_the_surface)
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{
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TestShape t = TestShape();
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Vector eyev = Vector(0, 0, -1);
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Vector normalv = Vector(0, 0, -1);
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Light light = Light(POINT_LIGHT, Point(0, 0, 10), Colour(1, 1, 1));
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Colour result = m.lighting(light, position, eyev, normalv, &t);
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ASSERT_EQ(result, Colour(0.1, 0.1, 0.1));
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}
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TEST(MaterialTest, Lighting_with_the_surface_in_shadow)
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{
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TestShape t = TestShape();
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Vector eyev = Vector(0, 0, -1);
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Vector normalv = Vector(0, 0, -1);
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Light light = Light(POINT_LIGHT, Point(0, 0, -10), Colour(1, 1, 1));
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bool inShadow = true;
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Colour result = m.lighting(light, position, eyev, normalv, &t, inShadow);
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ASSERT_EQ(result, Colour(0.1, 0.1, 0.1));
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}
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TEST(MaterialTest, Reflectivity_for_the_default_material)
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{
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Material m = Material();
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ASSERT_EQ(m.reflective, 0);
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}
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