66c1582a5f
Change derived shape to only deal with local calculation they don't need anymore to deal with how they've been transformed.
98 lines
2.2 KiB
C++
98 lines
2.2 KiB
C++
/*
|
|
* DoRayMe - a quick and dirty Raytracer
|
|
* Shape unit tests
|
|
*
|
|
* Created by Manoël Trapier
|
|
* Copyright (c) 2020 986-Studio.
|
|
*
|
|
*/
|
|
#include <shape.h>
|
|
#include <testshape.h>
|
|
#include <matrix.h>
|
|
#include <transformation.h>
|
|
#include <gtest/gtest.h>
|
|
|
|
TEST(ShapeTest, The_default_transformation)
|
|
{
|
|
TestShape s = TestShape();
|
|
ASSERT_EQ(s.transformMatrix, Matrix4().identity());
|
|
}
|
|
|
|
TEST(ShapeTest, Assigning_a_transformation)
|
|
{
|
|
TestShape s = TestShape();
|
|
|
|
s.setTransform(translation(2, 3, 4));
|
|
|
|
ASSERT_EQ(s.transformMatrix, translation(2, 3, 4));
|
|
}
|
|
|
|
TEST(ShapeTest, The_default_material)
|
|
{
|
|
TestShape s = TestShape();
|
|
|
|
ASSERT_EQ(s.material, Material());
|
|
}
|
|
|
|
TEST(ShapeTest, Assigning_a_material)
|
|
{
|
|
TestShape s = TestShape();
|
|
Material m = Material();
|
|
m.ambient = 1;
|
|
|
|
s.material = m;
|
|
|
|
ASSERT_EQ(s.material, m);
|
|
}
|
|
|
|
TEST(ShapeTest, Intersecting_a_scaled_shape_with_a_ray)
|
|
{
|
|
Ray r = Ray(Point(0, 0, -5), Vector(0, 0, 1));
|
|
TestShape s = TestShape();
|
|
|
|
s.setTransform(scaling(2, 2, 2));
|
|
Intersect xs = s.intersect(r);
|
|
|
|
ASSERT_EQ(s.localRay.origin, Point(0, 0, -2.5));
|
|
ASSERT_EQ(s.localRay.direction, Vector(0, 0, 0.5));
|
|
}
|
|
|
|
TEST(ShapeTest, Intersecting_a_translated_shape_with_a_ray)
|
|
{
|
|
Ray r = Ray(Point(0, 0, -5), Vector(0, 0, 1));
|
|
TestShape s = TestShape();
|
|
|
|
s.setTransform(translation(5, 0, 0));
|
|
Intersect xs = s.intersect(r);
|
|
|
|
ASSERT_EQ(s.localRay.origin, Point(-5, 0, -5));
|
|
ASSERT_EQ(s.localRay.direction, Vector(0, 0, 1));
|
|
}
|
|
|
|
TEST(ShapeTest, Computing_the_normal_on_a_translated_shape)
|
|
{
|
|
TestShape s = TestShape();
|
|
s.setTransform(translation(0, 1, 0));
|
|
Tuple n = s.normalAt(Point(0, 1.70711, -0.70711));
|
|
|
|
/* Temporary lower the precision */
|
|
set_equal_precision(0.00001);
|
|
|
|
ASSERT_EQ(n, Vector(0, 0.70711, -0.70711));
|
|
|
|
set_equal_precision(FLT_EPSILON);
|
|
}
|
|
|
|
TEST(ShapeTest, Computing_the_normal_on_a_tranformed_shape)
|
|
{
|
|
TestShape s = TestShape();
|
|
s.setTransform(scaling(1, 0.5, 1) * rotationZ(M_PI / 5));
|
|
Tuple n = s.normalAt(Point(0, sqrt(2)/2, -sqrt(2)/2));
|
|
|
|
/* Temporary lower the precision */
|
|
set_equal_precision(0.00001);
|
|
|
|
ASSERT_EQ(n, Vector(0, 0.97014, -0.24254));
|
|
|
|
set_equal_precision(FLT_EPSILON);
|
|
} |