From 0d0ce0a318c6c26128f24574cbc63005dcd4a757 Mon Sep 17 00:00:00 2001
From: ladevieq <ladevie.quentin@gmail.com>
Date: Wed, 6 Jan 2021 00:34:02 +0100
Subject: Customisalbe camera with focus plan

---
 src/camera.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'src/camera.cpp')

diff --git a/src/camera.cpp b/src/camera.cpp
index 592f3d5..c7e2e35 100644
--- a/src/camera.cpp
+++ b/src/camera.cpp
@@ -11,9 +11,9 @@ camera::camera(
         double focus_dist
     ) : position(position), lens_radius(aperture / 2.0) {
 
-    forward = (position - target).unit();
-    right = vec3{ 0.0, 1.0, 0.0 }.cross(forward).unit();
-    up = forward.cross(right).unit();
+    forward = (target - position).unit();
+    right = forward.cross(vec3{ 0.0, 1.0, 0.0 }).unit();
+    up = right.cross(forward).unit();
 
     auto h = tan(deg_to_rad(v_fov) / 2.0);
     viewport_height = 2.0 * h;
-- 
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