From b2c66ba7b6ab4cb181a11df3e5490c648d10bebe Mon Sep 17 00:00:00 2001
From: Victor Hugo Souza <victor.souza@aalto.fi>
Date: Mon, 27 Sep 2021 14:51:03 +0300
Subject: [PATCH] FIX: Invert affine for converting to the world space system

---
 invesalius/data/imagedata_utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/invesalius/data/imagedata_utils.py b/invesalius/data/imagedata_utils.py
index 09409bf..ab5358e 100644
--- a/invesalius/data/imagedata_utils.py
+++ b/invesalius/data/imagedata_utils.py
@@ -630,7 +630,7 @@ def convert_invesalius_to_world(position, orientation):
         orientation=orientation,
         axes='sxyz',
     )
-    M_world = slice.affine @ M_invesalius
+    M_world = np.linalg.inv(slice.affine) @ M_invesalius
 
     position_world, orientation_world = dco.transformation_matrix_to_coordinates(
         M_world,
--
libgit2 0.21.2