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-rw-r--r--game/addons/zylann.hterrain/tools/brush/settings_dialog/brush_settings_dialog.gd280
-rw-r--r--game/addons/zylann.hterrain/tools/brush/settings_dialog/brush_settings_dialog.tscn211
-rw-r--r--game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_painter.gd41
-rw-r--r--game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_scratchpad.gd70
-rw-r--r--game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_scratchpad.tscn22
5 files changed, 624 insertions, 0 deletions
diff --git a/game/addons/zylann.hterrain/tools/brush/settings_dialog/brush_settings_dialog.gd b/game/addons/zylann.hterrain/tools/brush/settings_dialog/brush_settings_dialog.gd
new file mode 100644
index 0000000..71f81d1
--- /dev/null
+++ b/game/addons/zylann.hterrain/tools/brush/settings_dialog/brush_settings_dialog.gd
@@ -0,0 +1,280 @@
+@tool
+extends AcceptDialog
+
+const HT_Util = preload("../../../util/util.gd")
+const HT_Brush = preload("../brush.gd")
+const HT_Logger = preload("../../../util/logger.gd")
+const HT_EditorUtil = preload("../../util/editor_util.gd")
+const HT_SpinSlider = preload("../../util/spin_slider.gd")
+const HT_Scratchpad = preload("./preview_scratchpad.gd")
+
+@onready var _scratchpad : HT_Scratchpad = $VB/HB/VB3/PreviewScratchpad
+
+@onready var _shape_list : ItemList = $VB/HB/VB/ShapeList
+@onready var _remove_shape_button : Button = $VB/HB/VB/HBoxContainer/RemoveShape
+@onready var _change_shape_button : Button = $VB/HB/VB/ChangeShape
+
+@onready var _size_slider : HT_SpinSlider = $VB/HB/VB2/Settings/Size
+@onready var _opacity_slider : HT_SpinSlider = $VB/HB/VB2/Settings/Opacity
+@onready var _pressure_enabled_checkbox : CheckBox = $VB/HB/VB2/Settings/PressureEnabled
+@onready var _pressure_over_size_slider : HT_SpinSlider = $VB/HB/VB2/Settings/PressureOverSize
+@onready var _pressure_over_opacity_slider : HT_SpinSlider = $VB/HB/VB2/Settings/PressureOverOpacity
+@onready var _frequency_distance_slider : HT_SpinSlider = $VB/HB/VB2/Settings/FrequencyDistance
+@onready var _frequency_time_slider : HT_SpinSlider = $VB/HB/VB2/Settings/FrequencyTime
+@onready var _random_rotation_checkbox : CheckBox = $VB/HB/VB2/Settings/RandomRotation
+@onready var _shape_cycling_checkbox : CheckBox = $VB/HB/VB2/Settings/ShapeCycling
+
+var _brush : HT_Brush
+# This is a `EditorFileDialog`,
+# but cannot type it because I want to be able to test it by running the scene.
+# And when I run it, Godot does not allow to use `EditorFileDialog`.
+var _load_image_dialog
+# -1 means add, otherwise replace
+var _load_image_index := -1
+var _logger = HT_Logger.get_for(self)
+
+
+func _ready():
+ if HT_Util.is_in_edited_scene(self):
+ return
+
+ _size_slider.set_max_value(HT_Brush.MAX_SIZE_FOR_SLIDERS)
+ _size_slider.set_greater_max_value(HT_Brush.MAX_SIZE)
+
+ # TESTING
+ if not Engine.is_editor_hint():
+ setup_dialogs(self)
+ call_deferred("popup")
+
+
+func set_brush(brush : HT_Brush):
+ assert(brush != null)
+ _brush = brush
+ _update_controls_from_brush()
+
+
+# `base_control` can no longer be hinted as a `Control` because in Godot 4 it could be a
+# window or dialog, which are no longer controls...
+func setup_dialogs(base_control: Node):
+ assert(_load_image_dialog == null)
+ _load_image_dialog = HT_EditorUtil.create_open_file_dialog()
+ _load_image_dialog.file_mode = EditorFileDialog.FILE_MODE_OPEN_FILE
+ _load_image_dialog.add_filter("*.exr ; EXR files")
+ _load_image_dialog.unresizable = false
+ _load_image_dialog.access = EditorFileDialog.ACCESS_FILESYSTEM
+ _load_image_dialog.current_dir = HT_Brush.SHAPES_DIR
+ _load_image_dialog.file_selected.connect(_on_LoadImageDialog_file_selected)
+ _load_image_dialog.files_selected.connect(_on_LoadImageDialog_files_selected)
+ #base_control.add_child(_load_image_dialog)
+ # When a dialog opens another dialog, we get this error:
+ # "Transient parent has another exclusive child."
+ # Which is worked around by making the other dialog a child of the first one (I don't know why)
+ add_child(_load_image_dialog)
+
+
+func _exit_tree():
+ if _load_image_dialog != null:
+ _load_image_dialog.queue_free()
+ _load_image_dialog = null
+
+
+func _get_shapes_from_gui() -> Array[Texture2D]:
+ var shapes : Array[Texture2D] = []
+ for i in _shape_list.get_item_count():
+ var icon : Texture2D = _shape_list.get_item_icon(i)
+ assert(icon != null)
+ shapes.append(icon)
+ return shapes
+
+
+func _update_shapes_gui(shapes: Array[Texture2D]):
+ _shape_list.clear()
+ for shape in shapes:
+ assert(shape != null)
+ assert(shape is Texture2D)
+ _shape_list.add_icon_item(shape)
+ _update_shape_list_buttons()
+
+
+func _on_AddShape_pressed():
+ _load_image_index = -1
+ _load_image_dialog.file_mode = EditorFileDialog.FILE_MODE_OPEN_FILES
+ _load_image_dialog.popup_centered_ratio(0.7)
+
+
+func _on_RemoveShape_pressed():
+ var selected_indices := _shape_list.get_selected_items()
+ if len(selected_indices) == 0:
+ return
+
+ var index : int = selected_indices[0]
+ _shape_list.remove_item(index)
+
+ var shapes := _get_shapes_from_gui()
+ for brush in _get_brushes():
+ brush.set_shapes(shapes)
+
+ _update_shape_list_buttons()
+
+
+func _on_ShapeList_item_activated(index: int):
+ _request_modify_shape(index)
+
+
+func _on_ChangeShape_pressed():
+ var selected = _shape_list.get_selected_items()
+ if len(selected) == 0:
+ return
+ _request_modify_shape(selected[0])
+
+
+func _request_modify_shape(index: int):
+ _load_image_index = index
+ _load_image_dialog.file_mode = EditorFileDialog.FILE_MODE_OPEN_FILE
+ _load_image_dialog.popup_centered_ratio(0.7)
+
+
+func _on_LoadImageDialog_files_selected(fpaths: PackedStringArray):
+ var shapes := _get_shapes_from_gui()
+
+ for fpath in fpaths:
+ var tex := HT_Brush.load_shape_from_image_file(fpath, _logger)
+ if tex == null:
+ # Failed
+ continue
+ shapes.append(tex)
+
+ for brush in _get_brushes():
+ brush.set_shapes(shapes)
+
+ _update_shapes_gui(shapes)
+
+
+func _on_LoadImageDialog_file_selected(fpath: String):
+ var tex := HT_Brush.load_shape_from_image_file(fpath, _logger)
+ if tex == null:
+ # Failed
+ return
+
+ var shapes := _get_shapes_from_gui()
+ if _load_image_index == -1 or _load_image_index >= len(shapes):
+ # Add
+ shapes.append(tex)
+ else:
+ # Replace
+ assert(_load_image_index >= 0)
+ shapes[_load_image_index] = tex
+
+ for brush in _get_brushes():
+ brush.set_shapes(shapes)
+
+ _update_shapes_gui(shapes)
+
+
+func _notification(what: int):
+ if what == NOTIFICATION_VISIBILITY_CHANGED:
+ # Testing the scratchpad because visibility can not only change before entering the tree
+ # since Godot 4 port, it can also change between entering the tree and being _ready...
+ if visible and _scratchpad != null:
+ _update_controls_from_brush()
+
+
+func _update_controls_from_brush():
+ var brush := _brush
+
+ if brush == null:
+ # To allow testing
+ brush = _scratchpad.get_painter().get_brush()
+
+ _update_shapes_gui(brush.get_shapes())
+
+ _size_slider.set_value(brush.get_size(), false)
+ _opacity_slider.set_value(brush.get_opacity() * 100.0, false)
+ _pressure_enabled_checkbox.button_pressed = brush.is_pressure_enabled()
+ _pressure_over_size_slider.set_value(brush.get_pressure_over_scale() * 100.0, false)
+ _pressure_over_opacity_slider.set_value(brush.get_pressure_over_opacity() * 100.0, false)
+ _frequency_distance_slider.set_value(brush.get_frequency_distance(), false)
+ _frequency_time_slider.set_value(
+ 1000.0 / maxf(0.1, float(brush.get_frequency_time_ms())), false)
+ _random_rotation_checkbox.button_pressed = brush.is_random_rotation_enabled()
+ _shape_cycling_checkbox.button_pressed = brush.is_shape_cycling_enabled()
+
+
+func _on_ClearScratchpad_pressed():
+ _scratchpad.reset_image()
+
+
+func _on_Size_value_changed(value: float):
+ for brush in _get_brushes():
+ brush.set_size(value)
+
+
+func _on_Opacity_value_changed(value):
+ for brush in _get_brushes():
+ brush.set_opacity(value / 100.0)
+
+
+func _on_PressureEnabled_toggled(button_pressed):
+ for brush in _get_brushes():
+ brush.set_pressure_enabled(button_pressed)
+
+
+func _on_PressureOverSize_value_changed(value):
+ for brush in _get_brushes():
+ brush.set_pressure_over_scale(value / 100.0)
+
+
+func _on_PressureOverOpacity_value_changed(value):
+ for brush in _get_brushes():
+ brush.set_pressure_over_opacity(value / 100.0)
+
+
+func _on_FrequencyDistance_value_changed(value):
+ for brush in _get_brushes():
+ brush.set_frequency_distance(value)
+
+
+func _on_FrequencyTime_value_changed(fps):
+ fps = max(1.0, fps)
+ var ms = 1000.0 / fps
+ if is_equal_approx(fps, 60.0):
+ ms = 0
+ for brush in _get_brushes():
+ brush.set_frequency_time_ms(ms)
+
+
+func _on_RandomRotation_toggled(button_pressed: bool):
+ for brush in _get_brushes():
+ brush.set_random_rotation_enabled(button_pressed)
+
+
+func _on_shape_cycling_toggled(button_pressed: bool):
+ for brush in _get_brushes():
+ brush.set_shape_cycling_enabled(button_pressed)
+
+
+func _get_brushes() -> Array[HT_Brush]:
+ if _brush != null:
+ # We edit both the preview brush and the terrain brush
+ # TODO Could we simply share the brush?
+ return [_brush, _scratchpad.get_painter().get_brush()]
+ # When testing the dialog in isolation, the edited brush might be null
+ return [_scratchpad.get_painter().get_brush()]
+
+
+func _on_ShapeList_item_selected(index):
+ _update_shape_list_buttons()
+ for brush in _get_brushes():
+ brush.set_shape_index(index)
+
+
+func _update_shape_list_buttons():
+ var selected_count := len(_shape_list.get_selected_items())
+ # There must be at least one shape
+ _remove_shape_button.disabled = _shape_list.get_item_count() == 1 or selected_count == 0
+ _change_shape_button.disabled = selected_count == 0
+
+
+func _on_shape_list_empty_clicked(at_position, mouse_button_index):
+ _update_shape_list_buttons()
+
diff --git a/game/addons/zylann.hterrain/tools/brush/settings_dialog/brush_settings_dialog.tscn b/game/addons/zylann.hterrain/tools/brush/settings_dialog/brush_settings_dialog.tscn
new file mode 100644
index 0000000..7d7e07d
--- /dev/null
+++ b/game/addons/zylann.hterrain/tools/brush/settings_dialog/brush_settings_dialog.tscn
@@ -0,0 +1,211 @@
+[gd_scene load_steps=4 format=3 uid="uid://d2rt3wj8xkhp2"]
+
+[ext_resource type="PackedScene" path="res://addons/zylann.hterrain/tools/util/spin_slider.tscn" id="2"]
+[ext_resource type="Script" path="res://addons/zylann.hterrain/tools/brush/settings_dialog/brush_settings_dialog.gd" id="3"]
+[ext_resource type="PackedScene" uid="uid://ng00jipfeucy" path="res://addons/zylann.hterrain/tools/brush/settings_dialog/preview_scratchpad.tscn" id="4"]
+
+[node name="BrushSettingsDialog" type="AcceptDialog"]
+title = "Brush settings"
+size = Vector2i(700, 422)
+min_size = Vector2i(700, 400)
+script = ExtResource("3")
+
+[node name="VB" type="VBoxContainer" parent="."]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = 8.0
+offset_top = 8.0
+offset_right = -8.0
+offset_bottom = -49.0
+
+[node name="HB" type="HBoxContainer" parent="VB"]
+layout_mode = 2
+size_flags_vertical = 3
+
+[node name="VB" type="VBoxContainer" parent="VB/HB"]
+layout_mode = 2
+size_flags_vertical = 3
+
+[node name="Label" type="Label" parent="VB/HB/VB"]
+layout_mode = 2
+text = "Shapes"
+
+[node name="ShapeList" type="ItemList" parent="VB/HB/VB"]
+layout_mode = 2
+size_flags_vertical = 3
+fixed_icon_size = Vector2i(100, 100)
+
+[node name="ChangeShape" type="Button" parent="VB/HB/VB"]
+layout_mode = 2
+disabled = true
+text = "Change..."
+
+[node name="HBoxContainer" type="HBoxContainer" parent="VB/HB/VB"]
+layout_mode = 2
+
+[node name="AddShape" type="Button" parent="VB/HB/VB/HBoxContainer"]
+layout_mode = 2
+text = "Add..."
+
+[node name="RemoveShape" type="Button" parent="VB/HB/VB/HBoxContainer"]
+layout_mode = 2
+disabled = true
+text = "Remove"
+
+[node name="VB2" type="VBoxContainer" parent="VB/HB"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="Label" type="Label" parent="VB/HB/VB2"]
+layout_mode = 2
+
+[node name="Settings" type="VBoxContainer" parent="VB/HB/VB2"]
+layout_mode = 2
+size_flags_horizontal = 3
+
+[node name="Size" parent="VB/HB/VB2/Settings" instance=ExtResource("2")]
+custom_minimum_size = Vector2(32, 28)
+layout_mode = 2
+size_flags_horizontal = 3
+value = 32.0
+min_value = 2.0
+max_value = 500.0
+prefix = "Size:"
+suffix = "px"
+rounded = true
+centered = true
+allow_greater = true
+greater_max_value = 4000.0
+
+[node name="Opacity" parent="VB/HB/VB2/Settings" instance=ExtResource("2")]
+custom_minimum_size = Vector2(32, 28)
+layout_mode = 2
+size_flags_horizontal = 3
+value = 100.0
+max_value = 100.0
+prefix = "Opacity"
+suffix = "%"
+rounded = true
+centered = true
+greater_max_value = 10000.0
+
+[node name="PressureEnabled" type="CheckBox" parent="VB/HB/VB2/Settings"]
+layout_mode = 2
+text = "Enable pressure (pen tablets)"
+
+[node name="PressureOverSize" parent="VB/HB/VB2/Settings" instance=ExtResource("2")]
+custom_minimum_size = Vector2(32, 28)
+layout_mode = 2
+value = 50.0
+max_value = 100.0
+prefix = "Pressure affects size:"
+suffix = "%"
+centered = true
+greater_max_value = 10000.0
+
+[node name="PressureOverOpacity" parent="VB/HB/VB2/Settings" instance=ExtResource("2")]
+custom_minimum_size = Vector2(32, 28)
+layout_mode = 2
+value = 50.0
+max_value = 100.0
+prefix = "Pressure affects opacity:"
+suffix = "%"
+centered = true
+greater_max_value = 10000.0
+
+[node name="FrequencyTime" parent="VB/HB/VB2/Settings" instance=ExtResource("2")]
+custom_minimum_size = Vector2(32, 28)
+layout_mode = 2
+value = 60.0
+min_value = 1.0
+max_value = 60.0
+prefix = "Frequency time:"
+suffix = "fps"
+centered = true
+greater_max_value = 10000.0
+
+[node name="FrequencyDistance" parent="VB/HB/VB2/Settings" instance=ExtResource("2")]
+custom_minimum_size = Vector2(32, 28)
+layout_mode = 2
+max_value = 100.0
+prefix = "Frequency distance:"
+suffix = "px"
+centered = true
+greater_max_value = 4000.0
+
+[node name="RandomRotation" type="CheckBox" parent="VB/HB/VB2/Settings"]
+layout_mode = 2
+text = "Random rotation"
+
+[node name="ShapeCycling" type="CheckBox" parent="VB/HB/VB2/Settings"]
+layout_mode = 2
+text = "Shape cycling"
+
+[node name="HSeparator" type="HSeparator" parent="VB/HB/VB2/Settings"]
+visible = false
+layout_mode = 2
+
+[node name="SizeLimitHB" type="HBoxContainer" parent="VB/HB/VB2/Settings"]
+visible = false
+layout_mode = 2
+
+[node name="Label" type="Label" parent="VB/HB/VB2/Settings/SizeLimitHB"]
+layout_mode = 2
+mouse_filter = 0
+text = "Size limit:"
+
+[node name="SizeLimit" type="SpinBox" parent="VB/HB/VB2/Settings/SizeLimitHB"]
+layout_mode = 2
+size_flags_horizontal = 3
+min_value = 1.0
+max_value = 1000.0
+value = 200.0
+
+[node name="HSeparator2" type="HSeparator" parent="VB/HB/VB2/Settings"]
+visible = false
+layout_mode = 2
+
+[node name="HB" type="HBoxContainer" parent="VB/HB/VB2/Settings"]
+visible = false
+layout_mode = 2
+
+[node name="Button" type="Button" parent="VB/HB/VB2/Settings/HB"]
+layout_mode = 2
+text = "Load preset..."
+
+[node name="Button2" type="Button" parent="VB/HB/VB2/Settings/HB"]
+layout_mode = 2
+text = "Save preset..."
+
+[node name="VB3" type="VBoxContainer" parent="VB/HB"]
+layout_mode = 2
+
+[node name="Label" type="Label" parent="VB/HB/VB3"]
+layout_mode = 2
+text = "Scratchpad"
+
+[node name="PreviewScratchpad" parent="VB/HB/VB3" instance=ExtResource("4")]
+custom_minimum_size = Vector2(200, 300)
+layout_mode = 2
+
+[node name="ClearScratchpad" type="Button" parent="VB/HB/VB3"]
+layout_mode = 2
+text = "Clear"
+
+[connection signal="empty_clicked" from="VB/HB/VB/ShapeList" to="." method="_on_shape_list_empty_clicked"]
+[connection signal="item_activated" from="VB/HB/VB/ShapeList" to="." method="_on_ShapeList_item_activated"]
+[connection signal="item_selected" from="VB/HB/VB/ShapeList" to="." method="_on_ShapeList_item_selected"]
+[connection signal="pressed" from="VB/HB/VB/ChangeShape" to="." method="_on_ChangeShape_pressed"]
+[connection signal="pressed" from="VB/HB/VB/HBoxContainer/AddShape" to="." method="_on_AddShape_pressed"]
+[connection signal="pressed" from="VB/HB/VB/HBoxContainer/RemoveShape" to="." method="_on_RemoveShape_pressed"]
+[connection signal="value_changed" from="VB/HB/VB2/Settings/Size" to="." method="_on_Size_value_changed"]
+[connection signal="value_changed" from="VB/HB/VB2/Settings/Opacity" to="." method="_on_Opacity_value_changed"]
+[connection signal="toggled" from="VB/HB/VB2/Settings/PressureEnabled" to="." method="_on_PressureEnabled_toggled"]
+[connection signal="value_changed" from="VB/HB/VB2/Settings/PressureOverSize" to="." method="_on_PressureOverSize_value_changed"]
+[connection signal="value_changed" from="VB/HB/VB2/Settings/PressureOverOpacity" to="." method="_on_PressureOverOpacity_value_changed"]
+[connection signal="value_changed" from="VB/HB/VB2/Settings/FrequencyTime" to="." method="_on_FrequencyTime_value_changed"]
+[connection signal="value_changed" from="VB/HB/VB2/Settings/FrequencyDistance" to="." method="_on_FrequencyDistance_value_changed"]
+[connection signal="toggled" from="VB/HB/VB2/Settings/RandomRotation" to="." method="_on_RandomRotation_toggled"]
+[connection signal="toggled" from="VB/HB/VB2/Settings/ShapeCycling" to="." method="_on_shape_cycling_toggled"]
+[connection signal="pressed" from="VB/HB/VB3/ClearScratchpad" to="." method="_on_ClearScratchpad_pressed"]
diff --git a/game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_painter.gd b/game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_painter.gd
new file mode 100644
index 0000000..be52072
--- /dev/null
+++ b/game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_painter.gd
@@ -0,0 +1,41 @@
+@tool
+extends Node
+
+const HT_Painter = preload("./../painter.gd")
+const HT_Brush = preload("./../brush.gd")
+
+const HT_ColorShader = preload("../shaders/color.gdshader")
+
+var _painter : HT_Painter
+var _brush : HT_Brush
+
+
+func _init():
+ var p = HT_Painter.new()
+ # The name is just for debugging
+ p.set_name("Painter")
+ add_child(p)
+ _painter = p
+
+ _brush = HT_Brush.new()
+
+
+func set_image_texture(image: Image, texture: ImageTexture):
+ _painter.set_image(image, texture)
+
+
+func get_brush() -> HT_Brush:
+ return _brush
+
+
+# This may be called from an `_input` callback
+func paint_input(position: Vector2, pressure: float):
+ var p : HT_Painter = _painter
+
+ if not _brush.configure_paint_input([p], position, pressure):
+ return
+
+ p.set_brush_shader(HT_ColorShader)
+ p.set_brush_shader_param("u_color", Color(0,0,0,1))
+ #p.set_image(_image, _texture)
+ p.paint_input(position)
diff --git a/game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_scratchpad.gd b/game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_scratchpad.gd
new file mode 100644
index 0000000..cec0728
--- /dev/null
+++ b/game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_scratchpad.gd
@@ -0,0 +1,70 @@
+@tool
+extends Control
+
+const HT_PreviewPainter = preload("./preview_painter.gd")
+# TODO Can't preload because it causes the plugin to fail loading if assets aren't imported
+#const HT_DefaultBrushTexture = preload("../shapes/round2.exr")
+const HT_Brush = preload("../brush.gd")
+const HT_Logger = preload("../../../util/logger.gd")
+const HT_EditorUtil = preload("../../util/editor_util.gd")
+const HT_Util = preload("../../../util/util.gd")
+
+@onready var _texture_rect : TextureRect = $TextureRect
+@onready var _painter : HT_PreviewPainter = $Painter
+
+var _logger := HT_Logger.get_for(self)
+
+
+func _ready():
+ if HT_Util.is_in_edited_scene(self):
+ # If it runs in the edited scene,
+ # saving the scene would also save the ImageTexture in it...
+ return
+ reset_image()
+ # Default so it doesn't crash when painting and can be tested
+ var default_brush_texture = \
+ HT_EditorUtil.load_texture(HT_Brush.DEFAULT_BRUSH_TEXTURE_PATH, _logger)
+ _painter.get_brush().set_shapes([default_brush_texture])
+
+
+func reset_image():
+ var image = Image.create(_texture_rect.size.x, _texture_rect.size.y, false, Image.FORMAT_RGB8)
+ image.fill(Color(1,1,1))
+
+ # TEST
+# var fnl = FastNoiseLite.new()
+# for y in image.get_height():
+# for x in image.get_width():
+# var g = 0.5 + 0.5 * fnl.get_noise_2d(x, y)
+# image.set_pixel(x, y, Color(g, g, g, 1.0))
+
+ var texture = ImageTexture.create_from_image(image)
+ _texture_rect.texture = texture
+ _painter.set_image_texture(image, texture)
+
+
+func get_painter() -> HT_PreviewPainter:
+ return _painter
+
+
+func _gui_input(event):
+ if event is InputEventMouseMotion:
+ if Input.is_mouse_button_pressed(MOUSE_BUTTON_LEFT):
+ _painter.paint_input(event.position, event.pressure)
+ queue_redraw()
+
+ elif event is InputEventMouseButton:
+ if event.button_index == MOUSE_BUTTON_LEFT:
+ if event.pressed:
+ # TODO `pressure` is not available on button events
+ # So I have to assume zero... which means clicks do not paint anything?
+ _painter.paint_input(event.position, 0.0)
+ else:
+ _painter.get_brush().on_paint_end()
+
+
+func _draw():
+ var mpos = get_local_mouse_position()
+ var brush = _painter.get_brush()
+ draw_arc(mpos, 0.5 * brush.get_size(), -PI, PI, 32, Color(1, 0.2, 0.2), 2.0, true)
+
diff --git a/game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_scratchpad.tscn b/game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_scratchpad.tscn
new file mode 100644
index 0000000..0b50c91
--- /dev/null
+++ b/game/addons/zylann.hterrain/tools/brush/settings_dialog/preview_scratchpad.tscn
@@ -0,0 +1,22 @@
+[gd_scene load_steps=3 format=3 uid="uid://ng00jipfeucy"]
+
+[ext_resource type="Script" path="res://addons/zylann.hterrain/tools/brush/settings_dialog/preview_scratchpad.gd" id="1"]
+[ext_resource type="Script" path="res://addons/zylann.hterrain/tools/brush/settings_dialog/preview_painter.gd" id="2"]
+
+[node name="PreviewScratchpad" type="Control"]
+clip_contents = true
+layout_mode = 3
+anchors_preset = 0
+offset_right = 200.0
+offset_bottom = 274.0
+script = ExtResource("1")
+
+[node name="Painter" type="Node" parent="."]
+script = ExtResource("2")
+
+[node name="TextureRect" type="TextureRect" parent="."]
+show_behind_parent = true
+layout_mode = 0
+anchor_right = 1.0
+anchor_bottom = 1.0
+stretch_mode = 5