/*************************************************************************/
/*  polygon_3d_editor_plugin.h                                           */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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/*************************************************************************/

#ifndef POLYGON_3D_EDITOR_PLUGIN_H
#define POLYGON_3D_EDITOR_PLUGIN_H

#include "editor/editor_plugin.h"
#include "scene/3d/collision_polygon_3d.h"
#include "scene/3d/mesh_instance_3d.h"
#include "scene/resources/immediate_mesh.h"

class CanvasItemEditor;

class Polygon3DEditor : public HBoxContainer {
	GDCLASS(Polygon3DEditor, HBoxContainer);

	UndoRedo *undo_redo = nullptr;
	enum Mode {
		MODE_CREATE,
		MODE_EDIT,

	};

	Mode mode;

	Button *button_create = nullptr;
	Button *button_edit = nullptr;

	Ref<StandardMaterial3D> line_material;
	Ref<StandardMaterial3D> handle_material;

	Panel *panel = nullptr;
	Node3D *node = nullptr;
	Ref<Resource> node_resource;
	Ref<ImmediateMesh> imesh;
	MeshInstance3D *imgeom = nullptr;
	MeshInstance3D *pointsm = nullptr;
	Ref<ArrayMesh> m;

	MenuButton *options = nullptr;

	int edited_point = 0;
	Vector2 edited_point_pos;
	PackedVector2Array pre_move_edit;
	PackedVector2Array wip;
	bool wip_active;
	bool snap_ignore;

	float prev_depth = 0.0f;

	void _wip_close();
	void _polygon_draw();
	void _menu_option(int p_option);

	float _get_depth();
	PackedVector2Array _get_polygon();
	void _set_polygon(PackedVector2Array p_poly);

protected:
	void _notification(int p_what);
	void _node_removed(Node *p_node);
	static void _bind_methods();

public:
	virtual EditorPlugin::AfterGUIInput forward_spatial_gui_input(Camera3D *p_camera, const Ref<InputEvent> &p_event);
	void edit(Node *p_node);
	Polygon3DEditor();
	~Polygon3DEditor();
};

class Polygon3DEditorPlugin : public EditorPlugin {
	GDCLASS(Polygon3DEditorPlugin, EditorPlugin);

	Polygon3DEditor *polygon_editor = nullptr;

public:
	virtual EditorPlugin::AfterGUIInput forward_spatial_gui_input(Camera3D *p_camera, const Ref<InputEvent> &p_event) override { return polygon_editor->forward_spatial_gui_input(p_camera, p_event); }

	virtual String get_name() const override { return "Polygon3DEditor"; }
	bool has_main_screen() const override { return false; }
	virtual void edit(Object *p_object) override;
	virtual bool handles(Object *p_object) const override;
	virtual void make_visible(bool p_visible) override;

	Polygon3DEditorPlugin();
	~Polygon3DEditorPlugin();
};

#endif // POLYGON_3D_EDITOR_PLUGIN_H