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[WIP] reflect_color is in wip

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NADAL Jean-Baptiste
2024-03-05 18:30:57 +01:00
parent 41ea86d3ec
commit 1d75456ad8
3 changed files with 95 additions and 0 deletions
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14
raytracing/src/renderer/world.cpp
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@@ -168,6 +168,20 @@ Color World::shade_hit(const IntersectionData &an_intersection_data) const
/* ------------------------------------------------------------------------- */
Color World::reflected_color(const IntersectionData &a_data) const
{
if (a_data.object()->material().reflective() == 0.0)
{
return Color(0, 0, 0);
}
Ray the_reflected_ray(a_data.over_point(), a_data.reflectv());
Color the_color = color_at(the_reflected_ray);
return the_color * a_data.object()->material().reflective();
}
/* ------------------------------------------------------------------------- */
Color World::color_at(const Ray &a_ray) const
{
Color the_color = Color::Black();

1
raytracing/src/renderer/world.h
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@@ -64,6 +64,7 @@ namespace Raytracer
Intersections intersect_world(const Ray &a_ray) const;
Color shade_hit(const IntersectionData &an_intersection_data) const;
Color reflected_color(const IntersectionData &an_intersection_data) const;
Color color_at(const Ray &a_ray) const;
bool is_shadowed(const Tuple &a_point) const;

80
tests/11_reflection_refraction.cpp
View File

@@ -70,3 +70,83 @@ SCENARIO("Precomputing the reflection vector", "[features/intersections.feature]
}
}
}
/* ------------------------------------------------------------------------- */
SCENARIO("The reflected color for a non reflective material", "[features/world.feature]")
{
GIVEN("w <- default_world()")
{
World w = World::default_world();
AND_GIVEN("ray(point(0, 0, 0), vector(0, 0, 1)")
{
Ray r(Tuple::Point(0, 0, 0), Tuple::Vector(0, 0, 1));
AND_GIVEN("shape <-the second object in w")
{
Shape *shape = w.objects(1);
AND_GIVEN("shape.material.ambient <- 1")
{
shape->material().set_ambient(1);
AND_GIVEN("i <- intersection(1, shape)")
{
Intersection i(1, shape);
WHEN("comps <- prepare_computation(i, r)")
{
IntersectionData comps = i.prepare_computations(r);
AND_WHEN("color <- reflected_color(w, comps)")
{
Color color = w.reflected_color(comps);
THEN("color = color(0, 0, 0)")
{
REQUIRE(color == Color(0, 0, 0));
}
}
}
}
}
}
}
}
}
/* ------------------------------------------------------------------------- */
SCENARIO("The reflected color for a reflective material", "[features/world.feature]")
{
GIVEN("w <- default_world()")
{
World w = World::default_world();
AND_GIVEN("shape <- plane() with:")
// | material.reflective | 0.5 |
// | transform | translation(0, -1, 0) |
{
Plane shape;
shape.material().set_reflective(0.5);
shape.set_transform(Matrix::translation(0, -1, 0));
AND_GIVEN("shape is added to w")
{
w.add_object(&shape);
AND_GIVEN("ray(point(0, 0, -3), vector(0, -sqrt(2) / 2, sqrt(2) / 2)")
{
Ray r(Tuple::Point(0, 0, -3), Tuple::Vector(0, -sqrt(2) / 2, sqrt(2) / 2));
AND_GIVEN("i <- intersection(1, shape)")
{
Intersection i(sqrt(2), &shape);
WHEN("comps <- prepare_computation(i, r)")
{
IntersectionData comps = i.prepare_computations(r);
AND_WHEN("color <- reflected_color(w, comps)")
{
Color color = w.reflected_color(comps);
THEN("color = color(0, 0, 0)")
{
REQUIRE(color == Color(0.19032, 0.2379, 0.14274));
}
}
}
}
}
}
}
}
}