[WIP] Add cubes skeleton

raytracing/CMakeLists.txt

@@ -34,6 +34,7 @@ add_library(raytracing
     src/renderer/ray.cpp
     src/renderer/world.cpp
 
+    src/shapes/cube.cpp
     src/shapes/plane.cpp
     src/shapes/shape.cpp
     src/shapes/sphere.cpp

raytracing/include/raytracing.h

@@ -46,5 +46,6 @@
 #include "renderer/ray.h"
 #include "renderer/world.h"
 
+#include "shapes/cube.h"
 #include "shapes/plane.h"
 #include "shapes/sphere.h"

raytracing/src/shapes/cube.cpp

@@ -0,0 +1,54 @@
+/*!
+ * sphere.cpp
+ *
+ * Copyright (c) 2024, NADAL Jean-Baptiste. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * @Author:  NADAL Jean-Baptiste
+ * @Date: 13/03/2024
+ *
+ */
+
+// This is an independent project of an individual developer. Dear PVS-Studio, please check it.
+// PVS-Studio Static Code Analyzer for C, C++, C#, and Java: http://www.viva64.com
+
+/* ------------------------------------------------------------------------- */
+
+#include <cmath>
+
+#include "core/common.h"
+#include "core/intersections.h"
+
+#include "cube.h"
+
+using namespace Raytracer;
+
+/* ------------------------------------------------------------------------- */
+
+Intersections Cube::local_intersect(const Ray &a_ray)
+{
+    Intersections the_intersections;
+
+    return the_intersections;
+}
+
+/* ------------------------------------------------------------------------- */
+
+Tuple Cube::local_normal_at(const Tuple &a_local_point) const
+{
+    return Tuple::Vector(0, 1, 0);
+}

raytracing/src/shapes/cube.h

@@ -0,0 +1,46 @@
+/*!
+ * cube.h
+ *
+ * Copyright (c) 2024, NADAL Jean-Baptiste. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * @Author:  NADAL Jean-Baptiste
+ * @Date: 13/03/2024
+ *
+ */
+
+#ifndef _RAYTRACER_CUBE_H
+#define _RAYTRACER_CUBE_H
+
+/* ------------------------------------------------------------------------- */
+
+#include "shapes/shape.h"
+
+/* ------------------------------------------------------------------------- */
+
+namespace Raytracer
+{
+    class Cube : public Shape
+    {
+    public:
+        Cube(void) = default;
+        Intersections local_intersect(const Ray &a_ray) override;
+        Tuple local_normal_at(const Tuple &a_local_point) const override;
+    };
+}; // namespace Raytracer
+
+#endif // _RAYTRACER_CUBE_H

tests/12_cubes.cpp

@@ -0,0 +1,68 @@
+/*!
+ * 12_cubes.cpp
+ *
+ * Copyright (c) 2015-2024, NADAL Jean-Baptiste. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ *
+ * @Author:  NADAL Jean-Baptiste
+ * @Date: 13/03/2024
+ *
+ */
+
+/*---------------------------------------------------------------------------*/
+
+#include <external/catch.hpp>
+
+#include "raytracing.h"
+
+using namespace Raytracer;
+
+/* ------------------------------------------------------------------------- */
+
+SCENARIO("Reflectivity for the default material", "[features/cubes.feature]")
+{
+    // |        | origin            | direction        | t1 | t2 |
+    // | +x     | point(5, 0.5, 0)  | vector(-1, 0, 0) | 4  | 6  |
+    // | -x     | point(-5, 0.5, 0) | vector( 1, 0, 0) | 4  | 6  |
+    // | +y     | point(0.5, 5, 0)  | vector( 0,-1, 0) | 4  | 6  |
+    // | -y     | point(0.5, -5, 0) | vector( 0, 1, 0) | 4  | 6  |
+    // | +z     | point(0.5, 0, 5)  | vector( 0, 0,-1) | 4  | 6  |
+    // | -z     | point(0.5, 0, -5) | vector( 0, 0, 1) | 4  | 6  |
+    // | inside | point(0, 0.5, 0)  | vector( 0, 0, 1) | -1 | -1 |
+    GIVEN("c <- cube()")
+    {
+        Cube c;
+        AND_GIVEN("r <- ray(<origin>, <direction>)")
+        {
+            WHEN("xs <- local_intersect(c,r)")
+            {
+                THEN("xs.count = 2")
+                {
+                    // REQUIRE();
+                }
+                AND_THEN("xs[0].t = <t1>")
+                {
+                    // REQUIRE();
+                }
+                AND_THEN("xs[1].t = <t2>")
+                {
+                    // REQUIRE();
+                }
+            }
+        }
+    }
+}

tests/CMakeLists.txt

@@ -22,6 +22,7 @@ add_executable(raytracing_test
     09_planes.cpp
     10_patterns.cpp
     11_reflection_refraction.cpp
+    12_cubes.cpp
 )
 
 include_directories("${CMAKE_SOURCE_DIR}/tests")