136 lines
3.8 KiB
C
136 lines
3.8 KiB
C
#include <stdbool.h>
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#include <stdio.h>
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#include "world.h"
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#include "runner.h"
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static bool world_test_0(const char ** scenario)
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{
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*scenario = "Creating a world";
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struct world w = world();
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return
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w.object_count == 0 &&
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tuple_equal(w.light.intensity, tuple(0.0f, 0.0f, 0.0f, 0.0f));
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}
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static bool world_test_1(const char ** scenario)
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{
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*scenario = "The default world";
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struct light light = point_light(point(-10.0f, 10.0f, -10.0f), color(1.0f, 1.0f, 1.0f));
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struct sphere s1 = sphere();
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s1.material.color = color(0.8f, 1.0f, 0.6f);
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s1.material.diffuse = 0.7f;
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s1.material.specular = 0.2f;
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struct sphere s2 = sphere();
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s2.transform = scaling(0.5f, 0.5f, 0.5f);
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struct world w = default_world();
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return
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tuple_equal(w.light.position, light.position) &&
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tuple_equal(w.light.intensity, light.intensity) &&
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w.object_count == 2 &&
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tuple_equal(w.objects[0].material.color, s1.material.color) &&
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float_equal(w.objects[0].material.diffuse, s1.material.diffuse) &&
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float_equal(w.objects[0].material.specular, s1.material.specular) &&
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mat4x4_equal(&w.objects[1].transform, &s2.transform);
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}
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static bool world_test_2(const char ** scenario)
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{
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*scenario = "Intersect a world with a ray";
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struct world w = default_world();
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struct ray r = ray(point(0.0f, 0.0f, -5.0f), vector(0.0f, 0.0f, 1.0f));
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struct intersections xs;
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intersect_world(&w, r, &xs);
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return
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xs.count == 4 &&
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float_equal(xs.i[0].t, 4.0f) &&
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float_equal(xs.i[1].t, 4.5f) &&
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float_equal(xs.i[2].t, 5.5f) &&
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float_equal(xs.i[3].t, 6.0f);
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}
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static bool world_test_3(const char ** scenario)
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{
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*scenario = "Shading an intersection";
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struct world w = default_world();
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struct ray r = ray(point(0.0f, 0.0f, -5.0f), vector(0.0f, 0.0f, 1.0f));
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struct sphere * shape = &w.objects[0];
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struct intersection i = intersection(4.0f, shape);
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struct computations comps = prepare_computations(i, r);
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struct tuple c = shade_hit(&w, &comps);
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return tuple_equal(c, color(0.38066, 0.47583, 0.2855));
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}
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static bool world_test_4(const char ** scenario)
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{
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*scenario = "Shading an intersection from the inside";
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struct world w = default_world();
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w.light = point_light(point(0.0f, 0.25f, 0.0f), color(1.0f, 1.0f, 1.0f));
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struct ray r = ray(point(0.0f, 0.0f, 0.0f), vector(0.0f, 0.0f, 1.0f));
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struct sphere * shape = &w.objects[1];
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struct intersection i = intersection(0.5f, shape);
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struct computations comps = prepare_computations(i, r);
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struct tuple c = shade_hit(&w, &comps);
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return tuple_equal(c, color(0.90498, 0.90498, 0.90498));
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}
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static bool world_test_5(const char ** scenario)
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{
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*scenario = "The color when a ray misses";
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struct world w = default_world();
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struct ray r = ray(point(0.0f, 0.0f, -5.0f), vector(0.0f, 1.0f, 0.0f));
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struct tuple c = color_at(&w, r);
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return tuple_equal(c, color(0.0f, 0.0f, 0.0f));
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}
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static bool world_test_6(const char ** scenario)
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{
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*scenario = "The color when a ray hits";
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struct world w = default_world();
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struct ray r = ray(point(0.0f, 0.0f, -5.0f), vector(0.0f, 0.0f, 1.0f));
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struct tuple c = color_at(&w, r);
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return tuple_equal(c, color(0.38066f, 0.47583f, 0.2855f));
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}
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static bool world_test_7(const char ** scenario)
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{
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*scenario = "The color with an intersection behind the ray";
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struct world w = default_world();
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struct sphere * outer = &w.objects[0];
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outer->material.ambient = 1.0f;
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struct sphere * inner = &w.objects[1];
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inner->material.ambient = 1.0f;
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struct ray r = ray(point(0.0f, 0.0f, 0.75f), vector(0.0f, 0.0f, -1.0f));
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struct tuple c = color_at(&w, r);
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return tuple_equal(c, inner->material.color);
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}
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test_t world_tests[] = {
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world_test_0,
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world_test_1,
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world_test_2,
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world_test_3,
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world_test_4,
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world_test_5,
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world_test_6,
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world_test_7,
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};
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RUNNER(world_tests)
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