Merge pull request #11401 from SaracenOne/snapped_drag

Added snapping to spatial drag and drop.

core/math/math_funcs.h

@@ -387,6 +387,23 @@ public:
 
 		return hf;
 	}
+
+	static _ALWAYS_INLINE_ float snap_scalar(float p_offset, float p_step, float p_target) {
+		return p_step != 0 ? Math::stepify(p_target - p_offset, p_step) + p_offset : p_target;
+	}
+
+	static _ALWAYS_INLINE_ float snap_scalar_seperation(float p_offset, float p_step, float p_target, float p_separation) {
+		if (p_step != 0) {
+			float a = Math::stepify(p_target - p_offset, p_step + p_separation) + p_offset;
+			float b = a;
+			if (p_target >= 0)
+				b -= p_separation;
+			else
+				b += p_step;
+			return (Math::abs(p_target - a) < Math::abs(p_target - b)) ? a : b;
+		}
+		return p_target;
+	}
 };
 
 #endif // MATH_FUNCS_H

editor/plugins/canvas_item_editor_plugin.cpp

@@ -3438,7 +3438,6 @@ void CanvasItemEditor::_popup_callback(int p_op) {
 		case ANIM_INSERT_POS_SCALE:
 		case ANIM_INSERT_ROT_SCALE:
 		case ANIM_INSERT_POS_ROT_SCALE: {
-
 			static const bool key_toggles[7][3]={
 				{true,false,false},
 				{false,true,false},
@@ -3451,12 +3450,10 @@ void CanvasItemEditor::_popup_callback(int p_op) {
 			key_pos=key_toggles[p_op-ANIM_INSERT_POS][0];
 			key_rot=key_toggles[p_op-ANIM_INSERT_POS][1];
 			key_scale=key_toggles[p_op-ANIM_INSERT_POS][2];
-
 			for(int i=ANIM_INSERT_POS;i<=ANIM_INSERT_POS_ROT_SCALE;i++) {
 				int idx = animation_menu->get_popup()->get_item_index(i);
 				animation_menu->get_popup()->set_item_checked(idx,i==p_op);
 			}
-
 		} break;*/
 		case ANIM_COPY_POSE: {
 

editor/plugins/polygon_2d_editor_plugin.cpp

@@ -437,14 +437,10 @@ void Polygon2DEditor::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("_set_snap_step_y"), &Polygon2DEditor::_set_snap_step_y);
 }
 
-inline float _snap_scalar(float p_offset, float p_step, float p_target) {
-	return p_step != 0 ? Math::stepify(p_target - p_offset, p_step) + p_offset : p_target;
-}
-
 Vector2 Polygon2DEditor::snap_point(Vector2 p_target) const {
 	if (use_snap) {
-		p_target.x = _snap_scalar(snap_offset.x * uv_draw_zoom - uv_draw_ofs.x, snap_step.x * uv_draw_zoom, p_target.x);
-		p_target.y = _snap_scalar(snap_offset.y * uv_draw_zoom - uv_draw_ofs.y, snap_step.y * uv_draw_zoom, p_target.y);
+		p_target.x = Math::snap_scalar(snap_offset.x * uv_draw_zoom - uv_draw_ofs.x, snap_step.x * uv_draw_zoom, p_target.x);
+		p_target.y = Math::snap_scalar(snap_offset.y * uv_draw_zoom - uv_draw_ofs.y, snap_step.y * uv_draw_zoom, p_target.y);
 	}
 
 	return p_target;

editor/plugins/spatial_editor_plugin.cpp

@@ -2894,7 +2894,7 @@ bool SpatialEditorViewport::_create_instance(Node *parent, String &path, const P
 	if (parent_spatial)
 		global_transform = parent_spatial->get_global_transform();
 
-	global_transform.origin = _get_instance_position(p_point);
+	global_transform.origin = spatial_editor->snap_point(_get_instance_position(p_point));
 
 	editor_data->get_undo_redo().add_do_method(instanced_scene, "set_global_transform", global_transform);
 
@@ -4834,6 +4834,15 @@ void SpatialEditor::snap_cursor_to_plane(const Plane &p_plane) {
 	//cursor.pos=p_plane.project(cursor.pos);
 }
 
+Vector3 SpatialEditor::snap_point(Vector3 p_target, Vector3 p_start) const {
+	if (is_snap_enabled()) {
+		p_target.x = Math::snap_scalar(0.0, get_translate_snap(), p_target.x);
+		p_target.y = Math::snap_scalar(0.0, get_translate_snap(), p_target.y);
+		p_target.z = Math::snap_scalar(0.0, get_translate_snap(), p_target.z);
+	}
+	return p_target;
+}
+
 void SpatialEditorPlugin::_bind_methods() {
 
 	ClassDB::bind_method("snap_cursor_to_plane", &SpatialEditorPlugin::snap_cursor_to_plane);

editor/plugins/spatial_editor_plugin.h

@@ -548,6 +548,8 @@ public:
 	static SpatialEditor *get_singleton() { return singleton; }
 	void snap_cursor_to_plane(const Plane &p_plane);
 
+	Vector3 snap_point(Vector3 p_target, Vector3 p_start = Vector3(0, 0, 0)) const;
+
 	float get_znear() const { return settings_znear->get_value(); }
 	float get_zfar() const { return settings_zfar->get_value(); }
 	float get_fov() const { return settings_fov->get_value(); }

editor/plugins/texture_region_editor_plugin.cpp

@@ -736,23 +736,10 @@ void TextureRegionEditor::_edit_region() {
 	edit_draw->update();
 }
 
-inline float _snap_scalar(float p_offset, float p_step, float separation, float p_target) {
-	if (p_step != 0) {
-		float a = Math::stepify(p_target - p_offset, p_step + separation) + p_offset;
-		float b = a;
-		if (p_target >= 0)
-			b -= separation;
-		else
-			b += p_step;
-		return (Math::abs(p_target - a) < Math::abs(p_target - b)) ? a : b;
-	}
-	return p_target;
-}
-
 Vector2 TextureRegionEditor::snap_point(Vector2 p_target) const {
 	if (snap_mode == SNAP_GRID) {
-		p_target.x = _snap_scalar(snap_offset.x, snap_step.x, snap_separation.x, p_target.x);
-		p_target.y = _snap_scalar(snap_offset.y, snap_step.y, snap_separation.y, p_target.y);
+		p_target.x = Math::snap_scalar_seperation(snap_offset.x, snap_step.x, p_target.x, snap_separation.x);
+		p_target.y = Math::snap_scalar_seperation(snap_offset.y, snap_step.y, p_target.y, snap_separation.y);
 	}
 
 	return p_target;