//*****************************************************************************************
// Truevision - a 3d modeler for povray
//
// mesh.h
//
// Vincent LE PRINCE <vincentleprince@users.sourceforge.net>
// Copyright (C) 2000-2006 Vincent LE PRINCE
// This file is part of the TRUEVISION Package

//   This program is free software; you can redistribute it and/or modify
//   it under the terms of the GNU General Public License as published by
//   the Free Software Foundation; either version 2 of the License, or
//   (at your option) any later version.
//
//   This program is distributed in the hope that it will be useful,
//   but WITHOUT ANY WARRANTY; without even the implied warranty of
//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//   GNU General Public License for more details.
//
//   You should have received a copy of the GNU General Public License
//   along with this program; if not, write to the Free Software
//   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */ 
//*******************************************************************************************
#ifndef TV_MESH_H
#define TV_MESH_H
using namespace std;
#include "object3d.h"
#include "include/obj3dcsg.h"
#include <vector>
#include "include/utils3d.h"
#include "include/vertex.h"
#include "include/polygon.h"

class Mesh;
class ExtractTool;


// Mesh Edges
class MeshEdge {
	friend class ExtractTool;

	private:
		Vertex *point1, *point2;
		int pickname;
		bool selected;
	
	public:
		MeshEdge() { selected = false; }
		MeshEdge( MeshEdge & ref ) { point1 = ref.point1; point2 = ref.point2; selected = ref.selected; }
		MeshEdge( Vertex* pt1, Vertex* pt2 ) { point1 = pt1; point2 = pt2; selected = false; }
		Vertex *pta() { return point1; }
		Vertex *ptb() { return point2; }
		
		bool equal( Vertex *pt1, Vertex *pt2 ) { if ( ( pt1 == point1 && pt2 == point2 ) || ( pt1 == point2 && pt2 == point1 ) ) return true; else return false; }
		void display( int pick = -1 );
		void get_vertex() { point1->get_vertex(); point2->get_vertex(); }
		void select() { selected = true; }
		void unselect() { selected = false; }
		void toggle_selection() { selected = ! selected; }
		bool is_selected() { return selected; }
		bool is_picked( int pick ) { return ( pick == pickname ) ? true : false; }
		void save( ofstream & file, Mesh *mesh );
		void load(  ifstream & file, char *tag, Mesh *mesh );
};
	

// Mesh object
class Mesh : public ObjCSG {
	friend class ExtractTool;
	friend class Polygon;
	
	#define SENDER ((Mesh*)data)
	friend void sign_mesh_current_point_changed( GtkWidget *wid, gpointer data ) { SENDER->current_point_changed(); }
	#undef SENDER
	
	private:
		vector<Vertex*> points;
		vector<Polygon*> polygons;
		vector<MeshEdge*> edges;
		vector<Vertex*> selection;
		double selection_center[3];
		int edit_mode;
		bool in_undo;
	
		TvWidget_point *current_point;
		TvWidget_option_combo *smooth_type;
	
		void add_edge( Vertex *a, Vertex *b );
	
		double selection_scale[3];
		void current_point_changed();
		void update_current_point_widget();
		void update_selection();
		void update_normals();

	public:
		Mesh( app_objs *appref );
		Mesh( Mesh & ref );
		~Mesh();
		Object3D *duplicate_yourself() { Mesh *res = new Mesh( *this ); return res; }
		//void add_to_tree( GtkWidget *view, GtkTreeStore *store, GtkTreeSelection *sel, GtkTreeIter *parent, GtkTreeIter *sibling, const gchar *pixmap = NULL ) { Object3D::add_to_tree( view, store, sel, parent, sibling, "object_box.xpm" ); }

		void paste_object( Object3D *obj );	
		
		void add_point( double x, double y, double z );
		void add_quad( int a, int b, int c, int d );
		void add_triangle( int a, int b, int c );
		Polygon *add_polygon() { Polygon *poly = new Polygon(); polygons.push_back( poly ); return poly; }
		
		void purge_duplicate_points();
		void purge_unused_points();
		void update_edges();
		
		int get_point_index( Vertex *pt );
		Vertex *get_point( int index ) { return points[index]; }
		int points_size() { return points.size(); }
		
		void display( glview *view, bool set_color = true );
		void edit_widget( GtkWidget *wid );
		void destroy_editor();
		void pref_changed();
		
		void mouse_drag( struct drag_info *drag );
		void pointer_mode_changed();
		void unselect_all();
		void push_at_selection( Vertex *pt );
		void select_param_picked( int name, bool ctrl );
		float *get_location() { return translation->get(); }
		Rotation *get_rotation() { return rotation->get_rotation(); }
		
		void output_to_povray_pass1( ofstream & file );
		void save( ofstream & file );
		bool load( ifstream & file, char *tag );
		
		void move_selection( struct drag_info *drag );
		void rotate_selection( struct drag_info *drag );
		void scale_selection( struct drag_info *drag );

		void undo( Object3D *copy );
		void push_undo_item() { if ( !in_undo ) Object3D::push_undo_item(); }

		void apply_transformations();
		void delete_polygons();
		void tesselate();
		void flatten();
		void flatten_region();
		
		void select_all_poly();
		void unselect_all_poly();
		void invert_selection_poly();

		// Access methods
		virtual void set_location(float *data) { translation->set(data[0], data[1], data[2]); translation->update_widget();}
		void set_rotation(float *data) {rotation->set(data[0], data[1], data[2]); rotation->update_widget(); rotation->flush();}
		void set_size(float *data) { size->set(data[0], data[1], data[2]); size->update_widget();}
		float* get_rot(float* val) { float _x, _y, _z; rotation->get(_x, _y, _z); val[0] = _x; val[1] = _y; val[2] = _z; return (float*)val;}
		float* get_size() { return size->get(); }
};
#endif