Snap transform gizmo values in the 3D editor

Snap to step size, and then also be careful to only display that many digits (to avoid numbers like 1.234001)

editor/plugins/spatial_editor_plugin.cpp

@@ -1291,6 +1291,8 @@ void SpatialEditorViewport::_sinput(const Ref<InputEvent> &p_event) {
 
 				Vector3 ray_pos = _get_ray_pos(m->get_position());
 				Vector3 ray = _get_ray(m->get_position());
+				float snap = EDITOR_GET("interface/inspector/default_float_step");
+				int snap_step_decimals = Math::range_step_decimals(snap);
 
 				switch (_edit.mode) {
 
@@ -1372,18 +1374,14 @@ void SpatialEditorViewport::_sinput(const Ref<InputEvent> &p_event) {
 						// Disable local transformation for TRANSFORM_VIEW
 						bool local_coords = (spatial_editor->are_local_coords_enabled() && _edit.plane != TRANSFORM_VIEW);
 
-						float snap = 0;
 						if (_edit.snap || spatial_editor->is_snap_enabled()) {
-
 							snap = spatial_editor->get_scale_snap() / 100;
-
-							Vector3 motion_snapped = motion;
-							motion_snapped.snap(Vector3(snap, snap, snap));
-							set_message(TTR("Scaling: ") + motion_snapped);
-
-						} else {
-							set_message(TTR("Scaling: ") + motion);
 						}
+						Vector3 motion_snapped = motion;
+						motion_snapped.snap(Vector3(snap, snap, snap));
+						// This might not be necessary anymore after issue #288 is solved (in 4.0?).
+						set_message(TTR("Scaling: ") + "(" + String::num(motion_snapped.x, snap_step_decimals) + ", " +
+									String::num(motion_snapped.y, snap_step_decimals) + ", " + String::num(motion_snapped.z, snap_step_decimals) + ")");
 
 						for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
 
@@ -1502,17 +1500,13 @@ void SpatialEditorViewport::_sinput(const Ref<InputEvent> &p_event) {
 						// Disable local transformation for TRANSFORM_VIEW
 						bool local_coords = (spatial_editor->are_local_coords_enabled() && _edit.plane != TRANSFORM_VIEW);
 
-						float snap = 0;
 						if (_edit.snap || spatial_editor->is_snap_enabled()) {
-
 							snap = spatial_editor->get_translate_snap();
-
-							Vector3 motion_snapped = motion;
-							motion_snapped.snap(Vector3(snap, snap, snap));
-							set_message(TTR("Translating: ") + motion_snapped);
-						} else {
-							set_message(TTR("Translating: ") + motion);
 						}
+						Vector3 motion_snapped = motion;
+						motion_snapped.snap(Vector3(snap, snap, snap));
+						set_message(TTR("Translating: ") + "(" + String::num(motion_snapped.x, snap_step_decimals) + ", " +
+									String::num(motion_snapped.y, snap_step_decimals) + ", " + String::num(motion_snapped.z, snap_step_decimals) + ")");
 
 						for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
 
@@ -1601,20 +1595,12 @@ void SpatialEditorViewport::_sinput(const Ref<InputEvent> &p_event) {
 						float angle = Math::atan2(x_axis.dot(intersection - _edit.center), y_axis.dot(intersection - _edit.center));
 
 						if (_edit.snap || spatial_editor->is_snap_enabled()) {
-
-							float snap = spatial_editor->get_rotate_snap();
-
-							if (snap) {
-								angle = Math::rad2deg(angle) + snap * 0.5; //else it won't reach +180
-								angle -= Math::fmod(angle, snap);
-								set_message(vformat(TTR("Rotating %s degrees."), rtos(angle)));
-								angle = Math::deg2rad(angle);
-							} else
-								set_message(vformat(TTR("Rotating %s degrees."), rtos(Math::rad2deg(angle))));
-
-						} else {
-							set_message(vformat(TTR("Rotating %s degrees."), rtos(Math::rad2deg(angle))));
+							snap = spatial_editor->get_rotate_snap();
 						}
+						angle = Math::rad2deg(angle) + snap * 0.5; //else it won't reach +180
+						angle -= Math::fmod(angle, snap);
+						set_message(vformat(TTR("Rotating %s degrees."), String::num(angle, snap_step_decimals)));
+						angle = Math::deg2rad(angle);
 
 						List<Node *> &selection = editor_selection->get_selected_node_list();