[FEAT] Add creation of Point and Vector

tests/chapitre01_tuples.cpp

@@ -28,15 +28,55 @@
 
 /*---------------------------------------------------------------------------*/
 
-#include <gtest/gtest.h>
+#include <catch.hpp>
 
 #include "tuple.h"
 
-TEST(RaytracerTuple, CreateBasicTuple)
+using namespace Raytracer;
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("a tuple with w=1.0 is a point", "[Tuple]")
 {
-  Raytracer::Tuple t(4.3, -4.2, 3.1, 1.0);
-  EXPECT_FLOAT_EQ(t.x(), 4.3);
-  EXPECT_FLOAT_EQ(t.y(), -4.2);
-  EXPECT_FLOAT_EQ(t.z(), 3.1);
-  EXPECT_FLOAT_EQ(t.w(), 1.0);
+  Tuple a(4.3, -4.2, 3.1, 1.0);
+
+  REQUIRE(a.x() == 4.3f);
+  REQUIRE(a.y() == -4.2f);
+  REQUIRE(a.z() == 3.1f);
+  REQUIRE(a.w() == 1.0f);
+
+  REQUIRE(a.is_point() == true);
+  REQUIRE(a.is_vector() == false);
+}
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("a tuple with w=0 is a vector", "[Tuple]")
+{
+  Tuple a(4.3, -4.2, 3.1, 0.0);
+
+  REQUIRE(a.x() == 4.3f);
+  REQUIRE(a.y() == -4.2f);
+  REQUIRE(a.z() == 3.1f);
+  REQUIRE(a.w() == 0.0f);
+
+  REQUIRE(a.is_point() == false);
+}
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("Point() creates tuples with w=1", "[Tuple][Point]")
+{
+  Tuple p = Tuple::Point(4, -4, 3);
+
+  REQUIRE(p == Tuple(4, -4, 3, kRaytracerTuplePoint));
+}
+
+/* ------------------------------------------------------------------------- */
+
+TEST_CASE("Vector() creates tuples with w=0", "[Tuple][Vector]")
+{
+  Tuple v = Tuple::Vector(4, -4, 3);
+
+  REQUIRE(v == Tuple(4, -4, 3, kRaytracerTupleVector));
 }