From 8faf1db3be0600284693a553921a131c2c11fd58 Mon Sep 17 00:00:00 2001
From: Godzil <godzil@godzil.net>
Date: Sat, 15 Feb 2020 23:45:19 +0000
Subject: [PATCH] More Ray work.

---
 source/include/ray.h | 13 +++++++++++++
 tests/CMakeLists.txt |  2 +-
 tests/ray_test.cpp   | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 tests/ray_test.cpp

diff --git a/source/include/ray.h b/source/include/ray.h
index d525021..d66db0c 100644
--- a/source/include/ray.h
+++ b/source/include/ray.h
@@ -9,4 +9,17 @@
 #ifndef DORAYME_RAY_H
 #define DORAYME_RAY_H
 
+#include <tuple.h>
+
+class Ray
+{
+public:
+    Vector direction;
+    Point origin;
+
+    Ray(Point origin, Vector direction) : origin(origin), direction(direction) { };
+
+    Tuple position(double t) { return this->origin + this->direction * t; };
+};
+
 #endif //DORAYME_RAY_H
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 4233fec..90cbc26 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -3,7 +3,7 @@ project(DoRayTested)
 set(THREADS_PREFER_PTHREAD_FLAG ON)
 find_package(Threads REQUIRED)
 
-set(TESTS_SRC tuple_test.cpp colour_test.cpp canvas_test.cpp matrix_test.cpp transformation_test.cpp)
+set(TESTS_SRC tuple_test.cpp colour_test.cpp canvas_test.cpp matrix_test.cpp transformation_test.cpp ray_test.cpp)
 
 add_executable(testMyRays)
 target_include_directories(testMyRays PUBLIC ${gtest_SOURCE_DIR}/include ${gtest_SOURCE_DIR})
diff --git a/tests/ray_test.cpp b/tests/ray_test.cpp
new file mode 100644
index 0000000..1a9d0d7
--- /dev/null
+++ b/tests/ray_test.cpp
@@ -0,0 +1,32 @@
+/*
+ *  DoRayMe - a quick and dirty Raytracer
+ *  Ray unit tests
+ *
+ *  Created by Manoël Trapier
+ *  Copyright (c) 2020 986-Studio.
+ *
+ */
+#include <ray.h>
+#include <gtest/gtest.h>
+
+
+TEST(RayTest, Creating_a_ray_and_querying_it)
+{
+    Point origin = Point(1, 2, 3);
+    Vector direction = Vector(4, 5, 6);
+
+    Ray r = Ray(origin, direction);
+
+    ASSERT_EQ(r.origin, origin);
+    ASSERT_EQ(r.direction, direction);
+}
+
+TEST(RayTest, Computing_a_point_from_a_distance)
+{
+    Ray r = Ray(Point(2, 3, 4), Vector(1, 0, 0));
+
+    ASSERT_EQ(r.position(0), Point(2, 3, 4));
+    ASSERT_EQ(r.position(1), Point(3, 3, 4));
+    ASSERT_EQ(r.position(-1), Point(1, 3, 4));
+    ASSERT_EQ(r.position(2.5), Point(4.5, 3, 4));
+}
\ No newline at end of file