[WIP] starting the implementation of color

tests/01_tuples.cpp

@@ -1,5 +1,5 @@
 /*!
- * chapitre-01_tests.cpp
+ * 01_tuples.cpp
  *
  * Copyright (c) 2015-2024, NADAL Jean-Baptiste. All rights reserved.
  *
@@ -19,7 +19,7 @@
  * MA 02110-1301 USA
  *
  * @Author:  NADAL Jean-Baptiste
- * @Date: 07/02/2021
+ * @Date: 29/01/2024
  *
  */
 

tests/02_colors.cpp

@@ -0,0 +1,100 @@
+/*!
+ * 01_colors.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: 30/01/2024
+ *
+ */
+
+/*---------------------------------------------------------------------------*/
+
+#include <catch.hpp>
+
+#include "color.h"
+
+using namespace Raytracer;
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("colors are (red,green,blue) tuples", "[Colors]")
+{
+    Color c(-0.5, 0.4, 1.7);
+
+    REQUIRE(c.red() == -0.5);
+    REQUIRE(c.green() == 0.4);
+    REQUIRE(c.blue() == 1.7);
+}
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("Colors could be copied", "[Colors]")
+{
+    Color c1(-0.5, 0.4, 1.7);
+    Color c2;
+
+    c2 = c1;
+
+    REQUIRE(c2.red() == -0.5);
+    REQUIRE(c2.green() == 0.4);
+    REQUIRE(c2.blue() == 1.7);
+}
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("Adding colors", "[Colors]")
+{
+    Color c1(0.9, 0.6, 0.75);
+    Color c2(0.7, 0.1, 0.25);
+
+    //Color c3 = c1 + c2;
+
+    REQUIRE((c1 + c2) == Color(1.6, 0.7, 1.0));
+}
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("Adding colors without modify c1", "[Colors]")
+{
+    Color c1(0.9, 0.6, 0.75);
+    Color c2(0.7, 0.1, 0.25);
+
+    Color c3 = c1 + c2;
+
+    REQUIRE((c1 + c2) == Color(1.6, 0.7, 1.0));
+}
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("Subtracting colors", "[Colors]")
+{
+    Color c1(0.9, 0.6, 0.75);
+    Color c2(0.7, 0.1, 0.25);
+
+    REQUIRE((c1 - c2) == Color(0.2, 0.5, 0.5));
+}
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("Multiplying a color by a scalar", "[Colors]")
+{
+    Color c(0.2, 0.3, 0.4);
+
+    REQUIRE(c * 2 == Color(0.4, 0.6, 0.8));
+}

tests/CMakeLists.txt

@@ -12,7 +12,8 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 add_executable(main_test 
     main_test.cpp
 
-    chapitre01_tuples.cpp
+    01_tuples.cpp
+    02_colors.cpp
 )
 
 include_directories("${CMAKE_SOURCE_DIR}/tests")