From c4cc784003a3545bf2c33b7978663b270388b701 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C3=ABl=20Lemaire?= <michael@thunderk.net>
Date: Thu, 13 Jun 2013 17:37:29 +0200
Subject: [PATCH] Adding small unit tests

---
 src/rendering/camera.c    | 5 +++++
 src/testing/test_camera.c | 7 +++++++
 2 files changed, 12 insertions(+)

diff --git a/src/rendering/camera.c b/src/rendering/camera.c
index 1556f61..8967525 100644
--- a/src/rendering/camera.c
+++ b/src/rendering/camera.c
@@ -309,6 +309,11 @@ Vector3 cameraUnproject(CameraDefinition* camera, Vector3 point)
 {
     point.x = (point.x / (0.5 * camera->width) - 1.0);
     point.y = -(point.y / (0.5 * camera->height) - 1.0);
+    if (point.z < 1.0)
+    {
+        point.x = -point.x;
+        point.y = -point.y;
+    }
     return m4Transform(camera->unproject, point);
 }
 
diff --git a/src/testing/test_camera.c b/src/testing/test_camera.c
index 0fc2143..3cff93f 100644
--- a/src/testing/test_camera.c
+++ b/src/testing/test_camera.c
@@ -29,6 +29,9 @@ START_TEST(test_camera_projection)
     Vector3 point = cameraProject(cam, v3(12.0, 5.2, -6.3));
     point = cameraUnproject(cam, point);
     ck_assert_vector_values(point, 12.0, 5.2, -6.3);
+    point = cameraProject(cam, v3(-25.1, 8.3, 1.3));
+    point = cameraUnproject(cam, point);
+    ck_assert_vector_values(point, -25.1, 8.3, 1.3);
 
     cameraDeleteDefinition(cam);
 }
@@ -45,6 +48,10 @@ START_TEST(test_camera_depth)
     /* Test the real depth getter */
     Vector3 point = cameraProject(cam, v3(12.5, 0.0, 0.0));
     ck_assert_double_eq(cameraGetRealDepth(cam, point), 12.5);
+    point = cameraProject(cam, v3(12.5, 8.0, -3.0));
+    ck_assert_double_eq(cameraGetRealDepth(cam, point), 12.5);
+    point = cameraProject(cam, v3(12.5, 12.0, 58.0));
+    ck_assert_double_eq(cameraGetRealDepth(cam, point), 12.5);
 
     cameraDeleteDefinition(cam);
 }