From c6fb80cb9b8f5cc48216a784908811a31f6f6731 Mon Sep 17 00:00:00 2001
From: Germano Cavalcante <germano.costa@ig.com.br>
Date: Mon, 31 Jul 2023 16:06:37 +0200
Subject: [PATCH] Transform: use transform Pivot for AutoDepth during
 navigation

To avoid the small jumps during the Pan operation, a feature was
implemented in the `ED_view3d_navigation_do` utility that replaces the
point used for AutoDepth.

As a result, the depth of the pivot point is now used during the
transform.

Also, to ensure minimal disruption to non-AutoDepth users, this feature
is enabled only when "Auto Depth" is enabled.

Pull Request: https://projects.blender.org/blender/blender/pulls/109451
---
 source/blender/editors/include/ED_view3d.h       |  3 ++-
 .../editors/space_view3d/view3d_navigate.cc      | 16 ++++++++++++----
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/source/blender/editors/include/ED_view3d.h b/source/blender/editors/include/ED_view3d.h
index 1c9d3cbe028..45cca579734 100644
--- a/source/blender/editors/include/ED_view3d.h
+++ b/source/blender/editors/include/ED_view3d.h
@@ -223,7 +223,8 @@ bool ED_view3d_depth_unproject_v3(const struct ARegion *region,
 struct ViewOpsData *ED_view3d_navigation_init(struct bContext *C, const bool use_alt_navigation);
 bool ED_view3d_navigation_do(struct bContext *C,
                              struct ViewOpsData *vod,
-                             const struct wmEvent *event);
+                             const struct wmEvent *event,
+                             const float depth_loc_override[3]);
 void ED_view3d_navigation_free(struct bContext *C, struct ViewOpsData *vod);
 
 /* Projection */
diff --git a/source/blender/editors/space_view3d/view3d_navigate.cc b/source/blender/editors/space_view3d/view3d_navigate.cc
index b41e806c1eb..8a648038a25 100644
--- a/source/blender/editors/space_view3d/view3d_navigate.cc
+++ b/source/blender/editors/space_view3d/view3d_navigate.cc
@@ -12,6 +12,7 @@
 #include "MEM_guardedalloc.h"
 
 #include "BLI_math.h"
+#include "BLI_math_vector_types.hh"
 #include "BLI_rect.h"
 
 #include "BLT_translation.h"
@@ -45,6 +46,8 @@
 
 #include "view3d_navigate.hh" /* own include */
 
+using namespace blender;
+
 /* Prototypes. */
 static const ViewOpsType *view3d_navigation_type_from_idname(const char *idname);
 
@@ -490,7 +493,8 @@ static int view3d_navigation_invoke_generic(bContext *C,
                                             ViewOpsData *vod,
                                             const wmEvent *event,
                                             PointerRNA *ptr,
-                                            const ViewOpsType *nav_type)
+                                            const float dyn_ofs_override[3],
+                                            const eV3D_OpMode nav_type)
 {
   if (!nav_type->init_fn) {
     return OPERATOR_CANCELLED;
@@ -1020,16 +1024,20 @@ static int view3d_navigation_invoke(bContext *C,
                                     ViewOpsData *vod,
                                     const wmEvent *event,
                                     wmKeyMapItem *kmi,
-                                    const ViewOpsType *nav_type)
+                                    const float dyn_ofs_override[3],
+                                    eV3D_OpMode nav_type)
 {
   if (nav_type->poll_fn && !nav_type->poll_fn(C)) {
     return OPERATOR_CANCELLED;
   }
 
-  return view3d_navigation_invoke_generic(C, vod, event, kmi->ptr, nav_type);
+  return view3d_navigation_invoke_generic(C, vod, event, kmi->ptr, dyn_ofs_override, nav_type);
 }
 
-bool ED_view3d_navigation_do(bContext *C, ViewOpsData *vod, const wmEvent *event)
+bool ED_view3d_navigation_do(bContext *C,
+                             ViewOpsData *vod,
+                             const wmEvent *event,
+                             const float depth_loc_override[3])
 {
   if (!vod) {
     return false;