Rename SelectionRectangle to SelectionShape, make it have non-rectangular shape and multiple SelectionShapes can exist

- Create multiple selection rectangles
- Merge them together if they intersect
- Move the selections (without contents as of right now)
- Gizmos are being drawn but they are not functional yet

Code is very ugly.

project.godot

@@ -84,6 +84,16 @@ _global_script_classes=[ {
 "language": "GDScript",
 "path": "res://src/Classes/Project.gd"
 }, {
+"base": "Reference",
+"class": "Selection",
+"language": "GDScript",
+"path": "res://src/Classes/Selection.gd"
+}, {
+"base": "Polygon2D",
+"class": "SelectionShape",
+"language": "GDScript",
+"path": "res://src/Tools/SelectionShape.gd"
+}, {
 "base": "Guide",
 "class": "SymmetryGuide",
 "language": "GDScript",
@@ -105,6 +115,8 @@ _global_script_class_icons={
 "PaletteColor": "",
 "Patterns": "",
 "Project": "",
+"Selection": "",
+"SelectionShape": "",
 "SymmetryGuide": ""
 }
 

src/Autoload/Global.gd

@@ -111,7 +111,6 @@ var small_preview_viewport : ViewportContainer
 var camera : Camera2D
 var camera2 : Camera2D
 var camera_preview : Camera2D
-var selection_rectangle : Polygon2D
 var horizontal_ruler : BaseButton
 var vertical_ruler : BaseButton
 var transparent_checker : ColorRect
@@ -215,7 +214,6 @@ func _ready() -> void:
 	camera = find_node_by_name(main_viewport, "Camera2D")
 	camera2 = find_node_by_name(root, "Camera2D2")
 	camera_preview = find_node_by_name(root, "CameraPreview")
-	selection_rectangle = find_node_by_name(root, "SelectionRectangle")
 	horizontal_ruler = find_node_by_name(root, "HorizontalRuler")
 	vertical_ruler = find_node_by_name(root, "VerticalRuler")
 	transparent_checker = find_node_by_name(root, "TransparentChecker")

src/Classes/Project.gd

@@ -1,7 +1,6 @@
 class_name Project extends Reference
 # A class for project properties.
 
-
 var name := "" setget name_changed
 var size : Vector2 setget size_changed
 var undo_redo : UndoRedo
@@ -24,7 +23,7 @@ var x_symmetry_axis : SymmetryGuide
 var y_symmetry_axis : SymmetryGuide
 
 var selected_pixels := []
-var selected_rect := Rect2(0, 0, 0, 0) setget _set_selected_rect
+var selections := [] setget _set_selections # Array of SelectionShape(s)
 
 # For every camera (currently there are 3)
 var cameras_zoom := [Vector2(0.15, 0.15), Vector2(0.15, 0.15), Vector2(0.15, 0.15)] # Array of Vector2
@@ -85,9 +84,9 @@ func clear_selection() -> void:
 	selected_pixels.clear()
 
 
-func _set_selected_rect(value : Rect2) -> void:
-	selected_rect = value
-	Global.selection_rectangle.set_rect(value)
+func _set_selections(value : Array) -> void:
+	selections = value
+#	Global.selection_rectangl.set_rect(value)
 
 
 func change_project() -> void:
@@ -147,7 +146,7 @@ func change_project() -> void:
 	self.animation_tags = animation_tags
 
 	# Change the selection rectangle
-	Global.selection_rectangle.set_rect(selected_rect)
+#	Global.selection_rectangl.set_rect(selected_rect)
 
 	# Change the guides
 	for guide in Global.canvas.get_children():
@@ -364,7 +363,7 @@ func name_changed(value : String) -> void:
 func size_changed(value : Vector2) -> void:
 	size = value
 	update_tile_mode_rects()
-	Global.selection_rectangle.set_rect(Global.selection_rectangle.get_rect())
+#	Global.selection_rectangl.set_rect(Global.selection_rectangl.get_rect())
 
 
 func frames_changed(value : Array) -> void:
@@ -583,3 +582,16 @@ func update_tile_mode_rects() -> void:
 
 func is_empty() -> bool:
 	return frames.size() == 1 and layers.size() == 1 and frames[0].cels[0].image.is_invisible() and animation_tags.size() == 0
+
+
+func get_selection_image() -> Image:
+	var image := Image.new()
+	var cel_image : Image = frames[current_frame].cels[current_layer].image
+	image.copy_from(cel_image)
+	image.lock()
+	image.fill(Color(0, 0, 0, 0))
+	for pixel in selected_pixels:
+		var color : Color = cel_image.get_pixelv(pixel)
+		image.set_pixelv(pixel, color)
+	image.unlock()
+	return image

src/Classes/Selection.gd

@@ -0,0 +1,11 @@
+class_name Selection extends Reference
+
+
+var selected_area := [] # Selected pixels for each selection
+var borders : PoolVector2Array
+var node : SelectionShape
+
+
+func _init(_node : SelectionShape) -> void:
+	node = _node
+	Global.canvas.add_child(node)

src/Tools/Move.gd

@@ -9,12 +9,16 @@ func draw_start(position : Vector2) -> void:
 	starting_pos = position
 	offset = position
 	if Global.current_project.selected_pixels:
-		Global.selection_rectangle.move_start(true)
+		pass
+#		Global.selection_rectangl.move_start(true)
 
 
 func draw_move(position : Vector2) -> void:
 	if Global.current_project.selected_pixels:
-		Global.selection_rectangle.move_rect(position - offset)
+		for selection in Global.current_project.selections:
+			selection.move_polygon(position - offset)
+		offset = position
+#		Global.selection_rectangl.move_rect(position - offset)
 	else:
 		Global.canvas.move_preview_location = position - starting_pos
 	offset = position
@@ -37,7 +41,8 @@ func draw_end(position : Vector2) -> void:
 
 #			print(pixels[3])
 			if project.selected_pixels:
-				Global.selection_rectangle.move_end()
+				for selection in Global.current_project.selections:
+					selection.select_rect()
 			else:
 				Global.canvas.move_preview_location = Vector2.ZERO
 				var image_copy := Image.new()

src/Tools/RectSelect.gd

@@ -1,6 +1,8 @@
 extends BaseTool
 
 
+var current_selection_id := -1
+var start_position := Vector2.INF
 var _start := Rect2(0, 0, 0, 0)
 var _offset := Vector2.ZERO
 var _drag := false
@@ -8,49 +10,85 @@ var _move := false
 
 
 func draw_start(position : Vector2) -> void:
-	if Global.selection_rectangle.has_point(position):
+	var i := 0
+	for selection in Global.current_project.selections:
+		if selection.has_point(position):
+			current_selection_id = i
+		i += 1
+
+	if current_selection_id == -1:
+		current_selection_id = Global.current_project.selections.size()
+		var selection_shape := preload("res://src/Tools/SelectionShape.tscn").instance()
+		Global.current_project.selections.append(selection_shape)
+		Global.canvas.add_child(selection_shape)
+		_start = Rect2(position, Vector2.ZERO)
+		selection_shape.set_rect(_start)
+	else:
+		var selection : SelectionShape = Global.current_project.selections[current_selection_id]
 		_move = true
 		_offset = position
-		Global.selection_rectangle.move_start(Tools.shift)
-		_set_cursor_text(Global.selection_rectangle.get_rect())
-	else:
-		_drag = true
-		_start = Rect2(position, Vector2.ZERO)
-		Global.selection_rectangle.set_rect(_start)
+		start_position = position
+		_set_cursor_text(selection.get_rect())
+#	if Global.selection_rectangle.has_point(position):
+#		_move = true
+#		_offset = position
+#		Global.selection_rectangle.move_start(Tools.shift)
+#		_set_cursor_text(Global.selection_rectangle.get_rect())
+#	else:
+#		_drag = true
+#		_start = Rect2(position, Vector2.ZERO)
+#		Global.selection_rectangle.set_rect(_start)
 
 
 func draw_move(position : Vector2) -> void:
+	var selection : SelectionShape = Global.current_project.selections[current_selection_id]
+
 	if _move:
-		Global.selection_rectangle.move_rect(position - _offset)
+		for _selection in Global.current_project.selections:
+			_selection.move_polygon(position - _offset)
 		_offset = position
-		_set_cursor_text(Global.selection_rectangle.get_rect())
+		_set_cursor_text(selection.get_rect())
 	else:
 		var rect := _start.expand(position).abs()
 		rect = rect.grow_individual(0, 0, 1, 1)
-		Global.selection_rectangle.set_rect(rect)
+		selection.set_rect(rect)
 		_set_cursor_text(rect)
+#	if _move:
+#		Global.selection_rectangle.move_rect(position - _offset)
+#		_offset = position
+#		_set_cursor_text(Global.selection_rectangle.get_rect())
+#	else:
+#		var rect := _start.expand(position).abs()
+#		rect = rect.grow_individual(0, 0, 1, 1)
+#		Global.selection_rectangle.set_rect(rect)
+#		_set_cursor_text(rect)
 
 
-func draw_end(_position : Vector2) -> void:
+func draw_end(position : Vector2) -> void:
 	if _move:
-		Global.selection_rectangle.move_end()
+		for _selection in Global.current_project.selections:
+			_selection.move_polygon_end(position, start_position)
 	else:
-		Global.selection_rectangle.select_rect()
-	_drag = false
+		var selection : SelectionShape = Global.current_project.selections[current_selection_id]
+		selection.select_rect()
+#	_drag = false
 	_move = false
 	cursor_text = ""
+	start_position = Vector2.INF
+	current_selection_id = -1
 
 
-func cursor_move(position : Vector2) -> void:
-	if _drag:
-		_cursor = Vector2.INF
-	elif Global.selection_rectangle.has_point(position):
-		_cursor = Vector2.INF
-		Global.main_viewport.mouse_default_cursor_shape = Input.CURSOR_MOVE
-		Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
-	else:
-		_cursor = position
-		Global.main_viewport.mouse_default_cursor_shape = Input.CURSOR_CROSS
+func cursor_move(_position : Vector2) -> void:
+	pass
+#	if _drag:
+#		_cursor = Vector2.INF
+#	elif Global.selection_rectangle.has_point(position):
+#		_cursor = Vector2.INF
+#		Global.main_viewport.mouse_default_cursor_shape = Input.CURSOR_MOVE
+#		Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
+#	else:
+#		_cursor = position
+#		Global.main_viewport.mouse_default_cursor_shape = Input.CURSOR_CROSS
 
 
 func _set_cursor_text(rect : Rect2) -> void:

src/Tools/SelectionShape.gd

@@ -1,8 +1,10 @@
-extends Polygon2D
+class_name SelectionShape extends Polygon2D
 
 
 var line_offset := Vector2.ZERO setget _offset_changed
 var tween : Tween
+var local_selected_pixels := [] setget _local_selected_pixels_changed # Array of Vector2s
+var clear_selection_on_tree_exit := true
 var _selected_rect := Rect2(0, 0, 0, 0)
 var _clipped_rect := Rect2(0, 0, 0, 0)
 var _move_image := Image.new()
@@ -53,6 +55,20 @@ func _draw() -> void:
 		var end := Vector2(end_x, end_y)
 		draw_dashed_line(start, end, Color.white, Color.black, 1.0, 1.0, false)
 
+	if !local_selected_pixels:
+		return
+	var rect_pos := _selected_rect.position
+	var rect_end := _selected_rect.end
+	draw_circle(rect_pos, 1, Color.gray)
+	draw_circle(Vector2((rect_end.x + rect_pos.x) / 2, rect_pos.y), 1, Color.gray)
+	draw_circle(Vector2(rect_end.x, rect_pos.y), 1, Color.gray)
+	draw_circle(Vector2(rect_end.x, (rect_end.y + rect_pos.y) / 2), 1, Color.gray)
+	draw_circle(rect_end, 1, Color.gray)
+	draw_circle(Vector2(rect_end.x, rect_end.y), 1, Color.gray)
+	draw_circle(Vector2((rect_end.x + rect_pos.x) / 2, rect_end.y), 1, Color.gray)
+	draw_circle(Vector2(rect_pos.x, rect_end.y), 1, Color.gray)
+	draw_circle(Vector2(rect_pos.x, (rect_end.y + rect_pos.y) / 2), 1, Color.gray)
+
 	if _move_pixel:
 		draw_texture(_move_texture, _clipped_rect.position, Color(1, 1, 1, 0.5))
 
@@ -114,8 +130,22 @@ func draw_dashed_line(from : Vector2, to : Vector2, color : Color, color2 : Colo
 			draw_line(segment_start, to, color, width, antialiased)
 
 
+func _local_selected_pixels_changed(value : Array) -> void:
+	for pixel in local_selected_pixels:
+		if pixel in Global.current_project.selected_pixels:
+			Global.current_project.selected_pixels.erase(pixel)
+
+	local_selected_pixels = value
+
+	for pixel in local_selected_pixels:
+		if pixel in Global.current_project.selected_pixels:
+			continue
+		else:
+			Global.current_project.selected_pixels.append(pixel)
+
+
 func has_point(position : Vector2) -> bool:
-	return _selected_rect.has_point(position)
+	return Geometry.is_point_in_polygon(position, polygon)
 
 
 func get_rect() -> Rect2:
@@ -128,32 +158,69 @@ func set_rect(rect : Rect2) -> void:
 	polygon[1] = Vector2(rect.end.x, rect.position.y)
 	polygon[2] = rect.end
 	polygon[3] = Vector2(rect.position.x, rect.end.y)
-	visible = not rect.has_no_area()
+#	visible = not rect.has_no_area()
 
+
+func move_polygon(move : Vector2) -> void:
+	_selected_rect.position += move
+	_clipped_rect.position += move
+	for i in polygon.size():
+		polygon[i] += move
+#	set_rect(_selected_rect)
+
+
+func move_polygon_end(new_pos : Vector2, old_pos : Vector2) -> void:
+	var diff := new_pos - old_pos
+	var selected_pixels_copy = local_selected_pixels.duplicate()
+	for i in selected_pixels_copy.size():
+		selected_pixels_copy[i] += diff
+
+	self.local_selected_pixels = selected_pixels_copy
+
+
+func select_rect() -> void:
 	var project : Project = Global.current_project
-	if rect.has_no_area():
-		project.selected_pixels = []
-	else:
-		project.clear_selection()
-		for x in range(rect.position.x, rect.end.x):
-			for y in range(rect.position.y, rect.end.y):
+	self.local_selected_pixels = []
+	var selected_pixels_copy = local_selected_pixels.duplicate()
+	for x in range(_selected_rect.position.x, _selected_rect.end.x):
+		for y in range(_selected_rect.position.y, _selected_rect.end.y):
+			var pos := Vector2(x, y)
+#			if polygon.size() > 4: # if it's not a rectangle
+#				if !Geometry.is_point_in_polygon(pos, polygon):
+#					continue
 			if x < 0 or x >= project.size.x:
 				continue
 			if y < 0 or y >= project.size.y:
 				continue
-				project.selected_pixels.append(Vector2(x, y))
+			selected_pixels_copy.append(pos)
+
+	self.local_selected_pixels = selected_pixels_copy
+	if local_selected_pixels.size() == 0:
+		queue_free()
+		return
+	merge_multiple_selections()
+#	var undo_data = _get_undo_data(false)
+#	Global.current_project.selected_rect = _selected_rect
+#	commit_undo("Rectangle Select", undo_data)
 
 
-func move_rect(move : Vector2) -> void:
-	_selected_rect.position += move
-	_clipped_rect.position += move
-	set_rect(_selected_rect)
-
-
-func select_rect() -> void:
-	var undo_data = _get_undo_data(false)
-	Global.current_project.selected_rect = _selected_rect
-	commit_undo("Rectangle Select", undo_data)
+func merge_multiple_selections() -> void:
+	if Global.current_project.selections.size() < 2:
+		return
+	for selection in Global.current_project.selections:
+		if selection == self:
+			continue
+		var arr = Geometry.merge_polygons_2d(polygon, selection.polygon)
+#		print(arr)
+		if arr.size() == 1: # if the selections intersect
+			set_polygon(arr[0])
+			_selected_rect = _selected_rect.merge(selection._selected_rect)
+			var selected_pixels_copy = local_selected_pixels.duplicate()
+			for pixel in selection.local_selected_pixels:
+				selected_pixels_copy.append(pixel)
+			selection.clear_selection_on_tree_exit = false
+			selection.queue_free()
+			self.local_selected_pixels = selected_pixels_copy
 
 
 func move_start(move_pixel : bool) -> void:
@@ -283,3 +350,9 @@ func _get_undo_data(undo_image : bool) -> Dictionary:
 		data["image_data"] = image.data
 		image.lock()
 	return data
+
+
+func _on_SelectionShape_tree_exiting() -> void:
+	Global.current_project.selections.erase(self)
+	if clear_selection_on_tree_exit:
+		self.local_selected_pixels = []

src/Tools/SelectionShape.tscn

@@ -0,0 +1,12 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://src/Tools/SelectionShape.gd" type="Script" id=1]
+
+[node name="SelectionShape" type="Polygon2D"]
+z_index = 1
+color = Color( 1, 1, 1, 0 )
+invert_enable = true
+invert_border = 0.5
+polygon = PoolVector2Array( 0, 0, 0, 0, 0, 0, 0, 0 )
+script = ExtResource( 1 )
+[connection signal="tree_exiting" from="." to="." method="_on_SelectionShape_tree_exiting"]

src/UI/TopMenuContainer.gd

@@ -257,16 +257,21 @@ func edit_menu_id_pressed(id : int) -> void:
 			Global.current_project.undo_redo.redo()
 			Global.control.redone = false
 		EditMenuId.COPY:
-			Global.selection_rectangle.copy()
+			pass
+#			Global.selection_rectangl.copy()
 		EditMenuId.CUT:
-			Global.selection_rectangle.cut()
+			pass
+#			Global.selection_rectangl.cut()
 		EditMenuId.PASTE:
-			Global.selection_rectangle.paste()
+			pass
+#			Global.selection_rectangl.paste()
 		EditMenuId.DELETE:
-			Global.selection_rectangle.delete()
+			pass
+#			Global.selection_rectangl.delete()
 		EditMenuId.CLEAR_SELECTION:
-			Global.selection_rectangle.set_rect(Rect2(0, 0, 0, 0))
-			Global.selection_rectangle.select_rect()
+			pass
+#			Global.selection_rectangl.set_rect(Rect2(0, 0, 0, 0))
+#			Global.selection_rectangl.select_rect()
 		EditMenuId.PREFERENCES:
 			Global.preferences_dialog.popup_centered(Vector2(400, 280))
 			Global.dialog_open(true)

src/UI/UI.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=28 format=2]
+[gd_scene load_steps=27 format=2]
 
 [ext_resource path="res://src/UI/ToolButtons.gd" type="Script" id=1]
 [ext_resource path="res://src/UI/Canvas/CanvasPreview.tscn" type="PackedScene" id=2]
@@ -7,7 +7,6 @@
 [ext_resource path="res://src/UI/TransparentChecker.tscn" type="PackedScene" id=5]
 [ext_resource path="res://src/UI/Canvas/Rulers/HorizontalRuler.gd" type="Script" id=6]
 [ext_resource path="res://src/UI/Canvas/CameraMovement.gd" type="Script" id=7]
-[ext_resource path="res://src/SelectionRectangle.gd" type="Script" id=8]
 [ext_resource path="res://src/Shaders/TransparentChecker.shader" type="Shader" id=9]
 [ext_resource path="res://assets/graphics/dark_themes/tools/bucket.png" type="Texture" id=10]
 [ext_resource path="res://assets/graphics/dark_themes/tools/colorpicker.png" type="Texture" id=11]
@@ -348,15 +347,6 @@ current = true
 zoom = Vector2( 0.15, 0.15 )
 script = ExtResource( 7 )
 
-[node name="SelectionRectangle" type="Polygon2D" parent="CanvasAndTimeline/ViewportAndRulers/HSplitContainer/ViewportandVerticalRuler/ViewportContainer/Viewport"]
-visible = false
-z_index = 1
-color = Color( 1, 1, 1, 0 )
-invert_enable = true
-invert_border = 0.5
-polygon = PoolVector2Array( 0, 0, 0, 0, 0, 0, 0, 0 )
-script = ExtResource( 8 )
-
 [node name="ViewportContainer2" type="ViewportContainer" parent="CanvasAndTimeline/ViewportAndRulers/HSplitContainer"]
 margin_left = 902.0
 margin_right = 902.0