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/**************************************************************************/
/* curve_editor_plugin.h */
/**************************************************************************/
/* This file is part of: */
/* REDOT ENGINE */
/* https://redotengine.org */
/**************************************************************************/
/* Copyright (c) 2024-present Redot Engine contributors */
/* (see REDOT_AUTHORS.md) */
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#ifndef CURVE_EDITOR_PLUGIN_H
#define CURVE_EDITOR_PLUGIN_H
#include "editor/editor_inspector.h"
#include "editor/editor_resource_preview.h"
#include "editor/plugins/editor_plugin.h"
#include "scene/resources/curve.h"
class EditorSpinSlider;
class MenuButton;
class PopupMenu;
class CurveEdit : public Control {
GDCLASS(CurveEdit, Control);
public:
CurveEdit();
void set_snap_enabled(bool p_enabled);
void set_snap_count(int p_snap_count);
void use_preset(int p_preset_id);
void set_curve(Ref<Curve> p_curve);
Ref<Curve> get_curve();
Size2 get_minimum_size() const override;
enum PresetID {
PRESET_CONSTANT = 0,
PRESET_LINEAR,
PRESET_EASE_IN,
PRESET_EASE_OUT,
PRESET_SMOOTHSTEP,
PRESET_COUNT
};
enum TangentIndex {
TANGENT_NONE = -1,
TANGENT_LEFT = 0,
TANGENT_RIGHT = 1
};
protected:
void _notification(int p_what);
static void _bind_methods();
private:
virtual void gui_input(const Ref<InputEvent> &p_event) override;
void _curve_changed();
int get_point_at(Vector2 p_pos) const;
TangentIndex get_tangent_at(Vector2 p_pos) const;
float get_offset_without_collision(int p_current_index, float p_offset, bool p_prioritize_right = true);
void add_point(Vector2 p_pos);
void remove_point(int p_index);
void set_point_position(int p_index, Vector2 p_pos);
void set_point_tangents(int p_index, float p_left, float p_right);
void set_point_left_tangent(int p_index, float p_tangent);
void set_point_right_tangent(int p_index, float p_tangent);
void toggle_linear(int p_index, TangentIndex p_tangent = TANGENT_NONE);
void update_view_transform();
void set_selected_index(int p_index);
void set_selected_tangent_index(TangentIndex p_tangent);
Vector2 get_tangent_view_pos(int p_index, TangentIndex p_tangent) const;
Vector2 get_view_pos(Vector2 p_world_pos) const;
Vector2 get_world_pos(Vector2 p_view_pos) const;
void _redraw();
private:
const float ASPECT_RATIO = 6.f / 13.f;
Transform2D _world_to_view;
Ref<Curve> curve;
PopupMenu *_presets_menu = nullptr;
int selected_index = -1;
int hovered_index = -1;
TangentIndex selected_tangent_index = TANGENT_NONE;
TangentIndex hovered_tangent_index = TANGENT_NONE;
// Make sure to use the scaled values below.
const int BASE_POINT_RADIUS = 4;
const int BASE_HOVER_RADIUS = 10;
const int BASE_TANGENT_RADIUS = 3;
const int BASE_TANGENT_HOVER_RADIUS = 8;
const int BASE_TANGENT_LENGTH = 36;
int point_radius = BASE_POINT_RADIUS;
int hover_radius = BASE_HOVER_RADIUS;
int tangent_radius = BASE_TANGENT_RADIUS;
int tangent_hover_radius = BASE_TANGENT_HOVER_RADIUS;
int tangent_length = BASE_TANGENT_LENGTH;
enum GrabMode {
GRAB_NONE,
GRAB_ADD,
GRAB_MOVE
};
GrabMode grabbing = GRAB_NONE;
Vector2 initial_grab_pos;
int initial_grab_index;
float initial_grab_left_tangent;
float initial_grab_right_tangent;
bool snap_enabled = false;
int snap_count = 10;
};
// CurveEdit + toolbar
class CurveEditor : public VBoxContainer {
GDCLASS(CurveEditor, VBoxContainer);
// Make sure to use the scaled values below.
const int BASE_SPACING = 4;
int spacing = BASE_SPACING;
Button *snap_button = nullptr;
EditorSpinSlider *snap_count_edit = nullptr;
MenuButton *presets_button = nullptr;
CurveEdit *curve_editor_rect = nullptr;
void _set_snap_enabled(bool p_enabled);
void _set_snap_count(int p_snap_count);
void _on_preset_item_selected(int p_preset_id);
protected:
void _notification(int p_what);
public:
static const int DEFAULT_SNAP;
void set_curve(const Ref<Curve> &p_curve);
CurveEditor();
};
class EditorInspectorPluginCurve : public EditorInspectorPlugin {
GDCLASS(EditorInspectorPluginCurve, EditorInspectorPlugin);
public:
virtual bool can_handle(Object *p_object) override;
virtual void parse_begin(Object *p_object) override;
};
class CurveEditorPlugin : public EditorPlugin {
GDCLASS(CurveEditorPlugin, EditorPlugin);
public:
CurveEditorPlugin();
virtual String get_name() const override { return "Curve"; }
};
class CurvePreviewGenerator : public EditorResourcePreviewGenerator {
GDCLASS(CurvePreviewGenerator, EditorResourcePreviewGenerator);
public:
virtual bool handles(const String &p_type) const override;
virtual Ref<Texture2D> generate(const Ref<Resource> &p_from, const Size2 &p_size, Dictionary &p_metadata) const override;
};
#endif // CURVE_EDITOR_PLUGIN_H
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