[Bf-blender-cvs] [81894719125] master: Fix T94392: 3D Cursor surface projection onto hidden geometry

[Germano Cavalcante]

Commit: 8189471912564a59948072291fc0056f9b315a9d
Author: Germano Cavalcante
Date:   Mon Jan 3 11:51:41 2022 -0300
Branches: master
https://developer.blender.org/rB8189471912564a59948072291fc0056f9b315a9d

Fix T94392: 3D Cursor surface projection onto hidden geometry

Regression introduced in rB098008f42d8127d9b60717c7059d3c55a3bfada7

Previously the selected geometry was ignored along with the hidden one.

The mentioned commit caused neither the hidden nor the selected one to be ignored.

But hidden geometry needs to be ignored.

===================================================================

M	source/blender/editors/transform/transform_snap.c

===================================================================

diff --git a/source/blender/editors/transform/transform_snap.c b/source/blender/editors/transform/transform_snap.c
index 2d78b79b9a2..40be8e6e641 100644
--- a/source/blender/editors/transform/transform_snap.c
+++ b/source/blender/editors/transform/transform_snap.c
@@ -693,6 +693,15 @@ static void initSnappingMode(TransInfo *t)
             bm_face_is_snap_target,
             POINTER_FROM_UINT((BM_ELEM_SELECT | BM_ELEM_HIDDEN)));
       }
+      else {
+        /* Ignore hidden geometry in the general case. */
+        ED_transform_snap_object_context_set_editmesh_callbacks(
+            t->tsnap.object_context,
+            (bool (*)(BMVert *, void *))BM_elem_cb_check_hflag_disabled,
+            (bool (*)(BMEdge *, void *))BM_elem_cb_check_hflag_disabled,
+            (bool (*)(BMFace *, void *))BM_elem_cb_check_hflag_disabled,
+            POINTER_FROM_UINT(BM_ELEM_HIDDEN));
+      }
     }
   }
   else if (t->spacetype == SPACE_SEQ) {