[WIP] World in progress

tests/05_rays.cpp

@@ -227,32 +227,6 @@ SCENARIO("A sphere is behind a ray", "[features/spheres.feature]")
 
 /* ------------------------------------------------------------------------- */
 
-SCENARIO("Test Sphere Object", "[features/spheres.feature]")
-{
-    GIVEN("s1 <- sphere()")
-    {
-        Sphere s1;
-        AND_GIVEN("s2 <- s1")
-        {
-            Sphere s2 = s1;
-            AND_GIVEN("s3 <- sphere()")
-            {
-                Sphere s3;
-                THEN("s1 = s2")
-                {
-                    REQUIRE(s1 == s2);
-                }
-                AND_THEN("s1 != s3")
-                {
-                    REQUIRE(s1 != s3);
-                }
-            }
-        }
-    }
-}
-
-/* ------------------------------------------------------------------------- */
-
 SCENARIO("An intersection encapsulates t and object", "[features/intersections.feature]")
 {
     GIVEN("s <- sphere()")

tests/07_making_scene.cpp

@@ -0,0 +1,132 @@
+/*!
+ * 07_making_scene.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: 14/02/2024
+ *
+ */
+
+/*---------------------------------------------------------------------------*/
+
+#include <catch.hpp>
+
+#include "raytracing.h"
+
+using namespace Raytracer;
+
+/* ------------------------------------------------------------------------- */
+
+SCENARIO("Creating a world", "[features/world.feature]")
+{
+    GIVEN("w <- world()")
+    {
+        World w;
+        THEN("w contains no objects")
+        {
+            REQUIRE(w.objects_count() == 0);
+        }
+        AND_THEN("w has no light source")
+        {
+            REQUIRE(w.has_light() == false);
+        }
+    }
+}
+
+/* ------------------------------------------------------------------------- */
+
+SCENARIO("The default world", "[features/world.feature]")
+{
+    GIVEN("light <- point_light(point(-10, 10, 10), color(1, 1, 1))")
+    {
+        PointLight light = PointLight(Tuple::Point(-10, 10, 10), Color(1, 1, 1));
+        AND_GIVEN("s1 <- sphere")
+        // with:
+        //  |  material.color    | (0.8, 1.0, 0.6) |
+        //  |  material.diffuse  |  0.7            |
+        //  |  material.specular |  0.2            |
+        {
+            Sphere s1;
+            s1.material().set_color(Color(0.8, 1.0, 0.6));
+            s1.material().set_diffuse(0.7);
+            s1.material().set_specular(0.2);
+            AND_GIVEN("s2 <- sphere")
+            // with:
+            //  |  transform    | scaling(0.5, 0.5, 0.5) |
+            {
+                Sphere s2;
+                s2.set_transform(Matrix::scaling(0.5, 0.5, 0.5));
+                WHEN("w <- default_world")
+                {
+                    World w = World::default_world();
+                    THEN("w.light = light")
+                    {
+                        REQUIRE(w.light() == light);
+                    }
+                    AND_THEN("w contains s1")
+                    {
+                        REQUIRE(w.contains(s1) == true);
+                    }
+                    AND_THEN("w contains s2")
+                    {
+                        REQUIRE(w.contains(s2) == true);
+                    }
+                }
+            }
+        }
+    }
+}
+
+/* ------------------------------------------------------------------------- */
+
+SCENARIO("Intersect a world with a ray", "[features/world.feature]")
+{
+    GIVEN("w <- default_world()")
+    {
+        World w = World::default_world();
+        AND_GIVEN("r <- ray(point(0, 0, -5), vector(0, 0, 1))")
+        {
+            Ray r(Tuple::Point(0, 0, -5), Tuple::Vector(0, 0, 1));
+            WHEN("xs <- intersect_world(w,r)")
+            {
+                Intersections xs = w.intersect_world(r);
+                THEN("xs.count = 4")
+                {
+                    REQUIRE(xs.count() == 4);
+                }
+                AND_THEN("xs[0].t = 4")
+                {
+                    REQUIRE(xs[0].distance_t() == 4);
+                }
+                AND_THEN("xs[1].t = 4.5")
+                {
+                    REQUIRE(xs[1].distance_t() == 4.5);
+                }
+                AND_THEN("xs[2].t = 5.5")
+                {
+                    REQUIRE(xs[2].distance_t() == 5.5);
+                }
+                AND_THEN("xs[3].t = 6")
+                {
+                    REQUIRE(xs[3].distance_t() == 6);
+                }
+            }
+        }
+    }
+}

tests/CMakeLists.txt

@@ -17,6 +17,7 @@ add_executable(raytracing_test
     04_transformations.cpp
     05_rays.cpp
     06_light_shading.cpp
+    07_making_scene.cpp
 )
 
 include_directories("${CMAKE_SOURCE_DIR}/tests")