Tracking: Fix usage PLACEHOLDER function

Don't use BKE_view_layer_context_active_PLACEHOLDER which is marked
as "never use this".

In fact, it isn't needed to lookup for camera in the tracking function
at all: camera object is always explicitly passed to it.

1 files changed, 3 insertions, 16 deletions

diff --git a/source/blender/blenkernel/intern/tracking.c b/source/blender/blenkernel/intern/tracking.c
index 86fb2ab58bc..731051f2f34 100644
--- a/source/blender/blenkernel/intern/tracking.c
+++ b/source/blender/blenkernel/intern/tracking.c
@@ -395,23 +395,10 @@ MovieTrackingReconstruction *BKE_tracking_get_active_reconstruction(MovieTrackin
 /* Get transformation matrix for a given object which is used
  * for parenting motion tracker reconstruction to 3D world.
  */
-void BKE_tracking_get_camera_object_matrix(Scene *scene, Object *ob, float mat[4][4])
+void BKE_tracking_get_camera_object_matrix(Object *ob, float mat[4][4])
 {
-  if (!ob) {
-    if (scene->camera) {
-      ob = scene->camera;
-    }
-    else {
-      ob = BKE_view_layer_camera_find(BKE_view_layer_context_active_PLACEHOLDER(scene));
-    }
-  }
-
-  if (ob) {
-    BKE_object_where_is_calc_mat4(ob, mat);
-  }
-  else {
-    unit_m4(mat);
-  }
+  BLI_assert(ob != NULL);
+  BKE_object_where_is_calc_mat4(ob, mat);
 }
 
 /* Get projection matrix for camera specified by given tracking object