Fix T76919: Wrong orientation when changing translate to rotate

During the refactor of the transform operations, in an attempt to
maintain previous behavior, the default orientation of the translate
and resize operations became `Global` and the rotate operation became
`View`.

Now the default is always `View`, and on redo, the translate and rotate
operations are saved as `Global`.

4 files changed, 31 insertions, 22 deletions

diff --git a/source/blender/editors/transform/transform.c b/source/blender/editors/transform/transform.c
index 8e3ad55bae1..f779a6dea39 100644
--- a/source/blender/editors/transform/transform.c
+++ b/source/blender/editors/transform/transform.c
@@ -1615,6 +1615,17 @@ void saveTransform(bContext *C, TransInfo *t, wmOperator *op)
   int proportional = 0;
   PropertyRNA *prop;
 
+  if (!(t->con.mode & CON_APPLY) && (t->flag & T_MODAL) &&
+      ELEM(t->mode, TFM_TRANSLATION, TFM_RESIZE)) {
+    /* When redoing these modes the first time, it's more convenient to save
+     * the Global orientation. */
+    mul_m3_v3(t->spacemtx, t->values_final);
+    unit_m3(t->spacemtx);
+
+    BLI_assert(t->orientation.index == 0);
+    t->orientation.types[0] = V3D_ORIENT_GLOBAL;
+  }
+
   // Save back mode in case we're in the generic operator
   if ((prop = RNA_struct_find_property(op->ptr, "mode"))) {
     RNA_property_enum_set(op->ptr, prop, t->mode);
diff --git a/source/blender/editors/transform/transform.h b/source/blender/editors/transform/transform.h
index 943b8234f1e..9f4b3773fd8 100644
--- a/source/blender/editors/transform/transform.h
+++ b/source/blender/editors/transform/transform.h
@@ -519,6 +519,7 @@ typedef struct TransInfo {
 
   /** orientation matrix of the current space. */
   float spacemtx[3][3];
+  float spacemtx_inv[3][3];
   /** name of the current space, MAX_NAME. */
   char spacename[64];
 
diff --git a/source/blender/editors/transform/transform_generics.c b/source/blender/editors/transform/transform_generics.c
index 4472facf183..a33186cd9d3 100644
--- a/source/blender/editors/transform/transform_generics.c
+++ b/source/blender/editors/transform/transform_generics.c
@@ -1660,15 +1660,11 @@ void initTransInfo(bContext *C, TransInfo *t, wmOperator *op, const wmEvent *eve
       orient_type_scene += index_custom;
     }
 
-    short orient_type_default = V3D_ORIENT_GLOBAL;
+    short orient_type_default = V3D_ORIENT_VIEW;
     short orient_type_constraint[2];
 
     if (op && (prop = RNA_struct_find_property(op->ptr, "orient_axis"))) {
       t->orient_axis = RNA_property_enum_get(op->ptr, prop);
-
-      /* For transfor modes that require "orient_axis" use
-       * `V3D_ORIENT_VIEW` as default. */
-      orient_type_default = V3D_ORIENT_VIEW;
     }
     if (op && (prop = RNA_struct_find_property(op->ptr, "orient_axis_ortho"))) {
       t->orient_axis_ortho = RNA_property_enum_get(op->ptr, prop);
diff --git a/source/blender/editors/transform/transform_mode_translate.c b/source/blender/editors/transform/transform_mode_translate.c
index 4b380264dde..69552eda5bf 100644
--- a/source/blender/editors/transform/transform_mode_translate.c
+++ b/source/blender/editors/transform/transform_mode_translate.c
@@ -318,40 +318,39 @@ static void applyTranslationValue(TransInfo *t, const float vec[3])
 static void applyTranslation(TransInfo *t, const int UNUSED(mval[2]))
 {
   char str[UI_MAX_DRAW_STR];
+  float global_dir[3];
 
   if (t->flag & T_INPUT_IS_VALUES_FINAL) {
-    copy_v3_v3(t->values_final, t->values);
+    mul_v3_m3v3(global_dir, t->spacemtx, t->values);
   }
   else {
-    copy_v3_v3(t->values_final, t->values);
+    copy_v3_v3(global_dir, t->values);
     if ((t->con.mode & CON_APPLY) == 0) {
-      snapGridIncrement(t, t->values_final);
+      snapGridIncrement(t, global_dir);
     }
 
-    if (applyNumInput(&t->num, t->values_final)) {
-      removeAspectRatio(t, t->values_final);
+    if (applyNumInput(&t->num, global_dir)) {
+      removeAspectRatio(t, global_dir);
     }
 
-    applySnapping(t, t->values_final);
+    applySnapping(t, global_dir);
   }
 
   if (t->con.mode & CON_APPLY) {
-    float values_final[3];
-    copy_v3_v3(values_final, t->values_final);
-    t->con.applyVec(t, NULL, NULL, values_final, t->values_final);
-    headerTranslation(t, t->values_final, str);
+    float in[3];
+    copy_v3_v3(in, global_dir);
+    t->con.applyVec(t, NULL, NULL, in, global_dir);
+    headerTranslation(t, global_dir, str);
   }
   else {
-    headerTranslation(t, t->values_final, str);
+    headerTranslation(t, global_dir, str);
   }
 
-  /* don't use 't->values' now on */
-
-  applyTranslationValue(t, t->values_final);
+  applyTranslationValue(t, global_dir);
 
   /* evil hack - redo translation if clipping needed */
-  if (t->flag & T_CLIP_UV && clipUVTransform(t, t->values_final, 0)) {
-    applyTranslationValue(t, t->values_final);
+  if (t->flag & T_CLIP_UV && clipUVTransform(t, global_dir, 0)) {
+    applyTranslationValue(t, global_dir);
 
     /* In proportional edit it can happen that */
     /* vertices in the radius of the brush end */
@@ -362,8 +361,10 @@ static void applyTranslation(TransInfo *t, const int UNUSED(mval[2]))
     }
   }
 
-  recalcData(t);
+  /* Set the redo value. */
+  mul_v3_m3v3(t->values_final, t->spacemtx_inv, global_dir);
 
+  recalcData(t);
   ED_area_status_text(t->area, str);
 }