Made brushes work with the shading tool

src/Classes/Drawers.gd

@@ -66,9 +66,11 @@ func set_pixel_perfect(value: bool) -> void:
 		drawers = [simple_drawer, simple_drawer, simple_drawer, simple_drawer]
 
 
-func set_pixel(image: Image, position: Vector2, color: Color) -> void:
+func set_pixel(image: Image, position: Vector2, color: Color, ignore_mirroring := false) -> void:
 	var project : Project = Global.current_project
 	drawers[0].set_pixel(image, position, color, color_op)
+	if ignore_mirroring:
+		return
 
 	# Handle Mirroring
 	var mirror_x = project.x_symmetry_point - position.x

src/Tools/Draw.gd

@@ -339,7 +339,7 @@ func draw_indicator_at(position : Vector2, offset : Vector2, color : Color) -> v
 		canvas.draw_set_transform(canvas.position, canvas.rotation, canvas.scale)
 
 
-func _set_pixel(position : Vector2) -> void:
+func _set_pixel(position : Vector2, ignore_mirroring := false) -> void:
 	var project : Project = Global.current_project
 	if project.tile_mode and project.get_tile_mode_rect().has_point(position):
 		position = position.posmodv(project.size)
@@ -353,9 +353,9 @@ func _set_pixel(position : Vector2) -> void:
 		if _mask.size() >= i + 1:
 			if _mask[i] < Tools.pen_pressure:
 				_mask[i] = Tools.pen_pressure
-				_drawer.set_pixel(image, position, tool_slot.color)
+				_drawer.set_pixel(image, position, tool_slot.color, ignore_mirroring)
 		else:
-			_drawer.set_pixel(image, position, tool_slot.color)
+			_drawer.set_pixel(image, position, tool_slot.color, ignore_mirroring)
 
 
 func _draw_brush_image(_image : Image, _src_rect: Rect2, _dst: Vector2) -> void:

src/Tools/Eraser.gd

@@ -68,12 +68,12 @@ func draw_end(_position : Vector2) -> void:
 	update_random_image()
 
 
-func _draw_brush_image(_image : Image, src_rect: Rect2, dst: Vector2) -> void:
+func _draw_brush_image(image : Image, src_rect: Rect2, dst: Vector2) -> void:
 	_changed = true
-	var size := _image.get_size()
+	var size := image.get_size()
 	if _clear_image.get_size() != size:
 		_clear_image.resize(size.x, size.y, Image.INTERPOLATE_NEAREST)
 
 	var images := _get_selected_draw_images()
 	for draw_image in images:
-		draw_image.blit_rect_mask(_clear_image, _image, src_rect, dst)
+		draw_image.blit_rect_mask(_clear_image, image, src_rect, dst)

src/Tools/Shading.gd

@@ -23,8 +23,8 @@ class LightenDarkenOp extends Drawer.ColorOp:
 	var sat_amount := 10.0
 	var value_amount := 10.0
 
-	var hue_lighten_limit := 60.0 / 359.0
-	var hue_darken_limit := 270.0 / 359.0
+	var hue_lighten_limit := 60.0 / 359.0 # A yellow color
+	var hue_darken_limit := 270.0 / 359.0 # A purple color
 
 	var sat_lighten_limit := 10.0 / 100.0
 	var value_darken_limit := 10.0 / 100.0
@@ -244,6 +244,12 @@ func draw_end(_position : Vector2) -> void:
 	update_random_image()
 
 
-func _draw_brush_image(_image : Image, _src_rect: Rect2, _dst: Vector2) -> void:
+func _draw_brush_image(image : Image, src_rect: Rect2, dst: Vector2) -> void:
 	_changed = true
-	draw_tool_pixel(_cursor.floor())
+	image.lock()
+	for xx in image.get_size().x:
+		for yy in image.get_size().y:
+			if image.get_pixel(xx, yy).a > 0:
+				var pos := Vector2(xx, yy) + dst - src_rect.position
+				_set_pixel(pos, true)
+	image.unlock()

src/Tools/Shading.tscn

@@ -3,7 +3,6 @@
 [ext_resource path="res://src/Tools/Draw.tscn" type="PackedScene" id=1]
 [ext_resource path="res://src/Tools/Shading.gd" type="Script" id=2]
 
-
 [node name="ToolOptions" instance=ExtResource( 1 )]
 script = ExtResource( 2 )
 
@@ -154,7 +153,6 @@ margin_bottom = 42.0
 hint_tooltip = "Lighten/Darken amount"
 mouse_default_cursor_shape = 2
 size_flags_horizontal = 4
-max_value = 100.0
 value = 10.0
 align = 1
 
@@ -169,7 +167,6 @@ focus_mode = 0
 mouse_default_cursor_shape = 2
 size_flags_horizontal = 4
 size_flags_vertical = 1
-max_value = 100.0
 value = 10.0
 ticks_on_borders = true
 
@@ -194,7 +191,6 @@ margin_bottom = 42.0
 hint_tooltip = "Lighten/Darken amount"
 mouse_default_cursor_shape = 2
 size_flags_horizontal = 4
-max_value = 100.0
 value = 10.0
 align = 1
 
@@ -209,7 +205,6 @@ focus_mode = 0
 mouse_default_cursor_shape = 2
 size_flags_horizontal = 4
 size_flags_vertical = 1
-max_value = 100.0
 value = 10.0
 ticks_on_borders = true
 
@@ -247,6 +242,7 @@ margin_right = 40.0
 [node name="Vertical" parent="Mirror" index="1"]
 margin_left = 84.0
 margin_right = 101.0
+
 [connection signal="item_selected" from="ShadingMode" to="." method="_on_ShadingMode_item_selected"]
 [connection signal="item_selected" from="LightenDarken" to="." method="_on_LightenDarken_item_selected"]
 [connection signal="value_changed" from="Amount/Spinbox" to="." method="_on_LightenDarken_value_changed"]