Manipulator: fix camera lens update glitch

Property range setup initially used values that can change.

2 files changed, 28 insertions, 0 deletions

diff --git a/source/blender/windowmanager/manipulators/WM_manipulator_api.h b/source/blender/windowmanager/manipulators/WM_manipulator_api.h
index 3011da26851..a3875c50348 100644
--- a/source/blender/windowmanager/manipulators/WM_manipulator_api.h
+++ b/source/blender/windowmanager/manipulators/WM_manipulator_api.h
@@ -182,6 +182,11 @@ void WM_manipulator_target_property_def_func(
         struct wmManipulator *mpr, const char *idname,
         const struct wmManipulatorPropertyFnParams *params);
 
+void WM_manipulator_target_property_clear_rna_ptr(
+        struct wmManipulator *mpr, const struct wmManipulatorPropertyType *mpr_prop_type);
+void WM_manipulator_target_property_clear_rna(
+        struct wmManipulator *mpr, const char *idname);
+
 bool WM_manipulator_target_property_is_valid_any(struct wmManipulator *mpr);
 bool WM_manipulator_target_property_is_valid(
         const struct wmManipulatorProperty *mpr_prop);
diff --git a/source/blender/windowmanager/manipulators/intern/wm_manipulator_target_props.c b/source/blender/windowmanager/manipulators/intern/wm_manipulator_target_props.c
index 11bf981490e..836376f1c54 100644
--- a/source/blender/windowmanager/manipulators/intern/wm_manipulator_target_props.c
+++ b/source/blender/windowmanager/manipulators/intern/wm_manipulator_target_props.c
@@ -139,6 +139,29 @@ void WM_manipulator_target_property_def_func(
 	WM_manipulator_target_property_def_func_ptr(mpr, mpr_prop_type, params);
 }
 
+void WM_manipulator_target_property_clear_rna_ptr(
+        wmManipulator *mpr, const wmManipulatorPropertyType *mpr_prop_type)
+{
+	wmManipulatorProperty *mpr_prop = WM_manipulator_target_property_at_index(mpr, mpr_prop_type->index_in_type);
+
+	/* if manipulator evokes an operator we cannot use it for property manipulation */
+	BLI_assert(mpr->op_data == NULL);
+
+	mpr_prop->type = NULL;
+
+	mpr_prop->ptr = PointerRNA_NULL;
+	mpr_prop->prop = NULL;
+	mpr_prop->index = -1;
+}
+
+void WM_manipulator_target_property_clear_rna(
+        wmManipulator *mpr, const char *idname)
+{
+	const wmManipulatorPropertyType *mpr_prop_type = WM_manipulatortype_target_property_find(mpr->type, idname);
+	WM_manipulator_target_property_clear_rna_ptr(mpr, mpr_prop_type);
+}
+
+
 /** \} */