polygon2d realtime editing

editing nodes in the polygon2d editor now updates the polygon in realtime; the previous outline is shown, but this can be disabled via a new editor setting

2 files changed, 23 insertions, 0 deletions

diff --git a/editor/editor_settings.cpp b/editor/editor_settings.cpp
index 358d575764..ebaae7eb8e 100644
--- a/editor/editor_settings.cpp
+++ b/editor/editor_settings.cpp
@@ -686,6 +686,7 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 	set("editors/2d/pan_speed", 20);
 
 	set("editors/poly_editor/point_grab_radius", 8);
+	set("editors/poly_editor/show_previous_outline", true);
 
 	set("run/window_placement/rect", 1);
 	hints["run/window_placement/rect"] = PropertyInfo(Variant::INT, "run/window_placement/rect", PROPERTY_HINT_ENUM, "Top Left,Centered,Custom Position,Force Maximized,Force Fullscreen");
diff --git a/editor/plugins/polygon_2d_editor_plugin.cpp b/editor/plugins/polygon_2d_editor_plugin.cpp
index 24ccdcd445..5440f16d7e 100644
--- a/editor/plugins/polygon_2d_editor_plugin.cpp
+++ b/editor/plugins/polygon_2d_editor_plugin.cpp
@@ -402,6 +402,11 @@ bool Polygon2DEditor::forward_gui_input(const Ref<InputEvent> &p_event) {
 			cpoint = canvas_item_editor->snap_point(cpoint);
 			edited_point_pos = node->get_global_transform().affine_inverse().xform(cpoint);
 
+			Vector<Vector2> poly = Variant(node->get_polygon());
+			ERR_FAIL_INDEX_V(edited_point, poly.size(), false);
+			poly[edited_point] = edited_point_pos - node->get_offset();
+			node->set_polygon(Variant(poly));
+
 			canvas_item_editor->get_viewport_control()->update();
 		}
 	}
@@ -425,6 +430,23 @@ void Polygon2DEditor::_canvas_draw() {
 	Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
 	Ref<Texture> handle = get_icon("EditorHandle", "EditorIcons");
 
+	if (edited_point >= 0 && EDITOR_DEF("editors/poly_editor/show_previous_outline", true)) {
+
+		const Color col = node->get_color().contrasted();
+		const int n = pre_move_edit.size();
+		for (int i = 0; i < n; i++) {
+
+			Vector2 p, p2;
+			p = pre_move_edit[i] + node->get_offset();
+			p2 = pre_move_edit[(i + 1) % n] + node->get_offset();
+
+			Vector2 point = xform.xform(p);
+			Vector2 next_point = xform.xform(p2);
+
+			vpc->draw_line(point, next_point, col, 2);
+		}
+	}
+
 	for (int i = 0; i < poly.size(); i++) {
 
 		Vector2 p, p2;