Transform: default shrink/fatten even-offset to false

Changed for 2.8 but this cases spikes for some geometry, see: T59968

3 files changed, 5 insertions, 5 deletions

diff --git a/source/blender/editors/transform/transform.c b/source/blender/editors/transform/transform.c
index 7509b88ccff..f7a27571b64 100644
--- a/source/blender/editors/transform/transform.c
+++ b/source/blender/editors/transform/transform.c
@@ -2223,7 +2223,7 @@ void saveTransform(bContext *C, TransInfo *t, wmOperator *op)
 		}
 
 		if (prop_id && (prop = RNA_struct_find_property(op->ptr, prop_id))) {
-			RNA_property_boolean_set(op->ptr, prop, ((t->flag & T_ALT_TRANSFORM) != 0) == prop_state);
+			RNA_property_boolean_set(op->ptr, prop, ((t->flag & T_ALT_TRANSFORM) == 0) == prop_state);
 		}
 	}
 
@@ -5050,7 +5050,7 @@ static void applyShrinkFatten(TransInfo *t, const int UNUSED(mval[2]))
 		}
 	}
 	BLI_snprintf(str + ofs, sizeof(str) - ofs, IFACE_(" or Alt) Even Thickness %s"),
-	             WM_bool_as_string((t->flag & T_ALT_TRANSFORM) == 0));
+	             WM_bool_as_string((t->flag & T_ALT_TRANSFORM) != 0));
 	/* done with header string */
 
 	FOREACH_TRANS_DATA_CONTAINER (t, tc) {
@@ -5065,7 +5065,7 @@ static void applyShrinkFatten(TransInfo *t, const int UNUSED(mval[2]))
 
 			/* get the final offset */
 			tdistance = distance * td->factor;
-			if (td->ext && (t->flag & T_ALT_TRANSFORM) == 0) {
+			if (td->ext && (t->flag & T_ALT_TRANSFORM) != 0) {
 				tdistance *= td->ext->isize[0];  /* shell factor */
 			}
 
diff --git a/source/blender/editors/transform/transform_generics.c b/source/blender/editors/transform/transform_generics.c
index 11931160fca..882ef9e7301 100644
--- a/source/blender/editors/transform/transform_generics.c
+++ b/source/blender/editors/transform/transform_generics.c
@@ -1374,7 +1374,7 @@ void initTransInfo(bContext *C, TransInfo *t, wmOperator *op, const wmEvent *eve
 		}
 
 		if (prop_id && (prop = RNA_struct_find_property(op->ptr, prop_id))) {
-			SET_FLAG_FROM_TEST(t->flag, !RNA_property_boolean_get(op->ptr, prop), T_ALT_TRANSFORM);
+			SET_FLAG_FROM_TEST(t->flag, RNA_property_boolean_get(op->ptr, prop), T_ALT_TRANSFORM);
 		}
 	}
 
diff --git a/source/blender/editors/transform/transform_ops.c b/source/blender/editors/transform/transform_ops.c
index 5a3575c04d9..6bef5e4671a 100644
--- a/source/blender/editors/transform/transform_ops.c
+++ b/source/blender/editors/transform/transform_ops.c
@@ -896,7 +896,7 @@ static void TRANSFORM_OT_shrink_fatten(struct wmOperatorType *ot)
 
 	RNA_def_float(ot->srna, "value", 0, -FLT_MAX, FLT_MAX, "Offset", "", -FLT_MAX, FLT_MAX);
 
-	RNA_def_boolean(ot->srna, "use_even_offset", true, "Offset Even", "Scale the offset to give more even thickness");
+	RNA_def_boolean(ot->srna, "use_even_offset", false, "Offset Even", "Scale the offset to give more even thickness");
 
 	WM_operatortype_props_advanced_begin(ot);