/* Copyright 2004, 2005 Nicholas Bishop
 * 
 * This file is part of SharpConstruct.
 *
 * SharpConstruct 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.
 *
 * SharpConstruct 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 SharpConstruct; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#ifndef BRUSH_H
#define BRUSH_H

#include "Color.h"
#include "Mesh.h"
#include "Optimized.h"
#include "Sculpt.hh"
#include <gdkmm/pixbuf.h>

namespace SharpConstruct
{
	namespace Math
	{
		class PolarPoint;
	}
	class DisplaceBrush;
	class GrabBrush;
	class LayerBrush;
	class PinchBrush;
	class SmoothBrush;

	class SymmetryData
	{
	public:
		SymmetryData();
		SymmetryData( bool x, bool y, bool z );

		bool X() const;
		void SetX( const bool x );
		bool Y() const;
		void SetY( const bool y );
		bool Z() const;
		void SetZ( const bool z );
		
	private:
		bool x_, y_, z_;
	};

	class EditData
	{
	public:
		unsigned SIndex; // Symmetry index, 0 to 7
		Optimized::Normal3D Up, Left, Z;
		Optimized::Point3D Center;
	};

	class Brush
	{
	public:
		enum PositionMode{ OFF = 0, ADD, SUB };
		enum BrushMode{ DISPLACE, GRAB, SMOOTH, PINCH };	
	
		Brush();

		static void StartSculpt( Mesh& mesh );
		static void ContinueSculpt( Mesh& mesh );

		BrushMode Mode() const;
		void SetMode( const BrushMode& );
		
		PositionMode PositionEdit() const;
		void SetPositionEdit( PositionMode );
		
		bool ColorEdit() const;
		void SetColorEdit( bool );

		bool Flip() const;
		void SetFlip( bool );
		
		unsigned Radius() const;
		unsigned RadiusBase() const;
		void SetRadius( float );

		float Strength() const;
		void SetStrength( float );
		
		float Intensity() const;
		void SetIntensity( float );

		float Pressure() const;
		void SetPressure( const float );

		void SetRadiusPressure( const bool );
		void SetStrengthPressure( const bool );
		void SetIntensityPressure( const bool );
		
		const Color& CurrentColor() const;
		void SetColor( const Color& c );
		
		const SymmetryData& Symmetry() const;
		void SetSymmetry( const SymmetryData& s );

		bool Once() const;
		void SetOnce( bool o );
		bool Dot() const;
		void SetDot( bool d );

		void SetShape( Glib::RefPtr< Gdk::Pixbuf > );
		float AlphaStrength( Math::PolarPoint );
		float AlphaStrength( const float, const float );

		float BackLimit() const;
		void SetBackLimit( const float );
		float FrontLimit() const;
		void SetFrontLimit( const float );

		float CursorZ() const;
		void SetCursorZ( const float );
	private:
		template< typename Phase > void _sculpt( Mesh& mesh )
		{
			if( Mode() == DISPLACE )
			{
				if( Once() || Dot() )
					_sculpt_symmetrical< Phase, LayerBrush >( mesh );
				else
					_sculpt_symmetrical< Phase, DisplaceBrush >( mesh );
			}
			else if( Mode() == GRAB )
				_sculpt_symmetrical< Phase, GrabBrush >( mesh );
			else if( Mode() == PINCH )
				_sculpt_symmetrical< Phase, PinchBrush >( mesh );
			else if( Mode() == SMOOTH )
				_sculpt_symmetrical< Phase, SmoothBrush >( mesh );
		}
		template< typename Phase, typename Action > void _sculpt_symmetrical( Mesh& mesh )
		{
			// Prepare phase and action
			Phase phase;
			Action action( phase, mesh );

			// Do action
			action( phase, mesh.GetMirror( false, false, false ) );
			if( Symmetry().X() )
				action( phase, mesh.GetMirror( true, false, false ) );
			if( Symmetry().Y() )
				action( phase, mesh.GetMirror( false, true, false ) );
			if( Symmetry().Z() )
				action( phase, mesh.GetMirror( false, false, true ) );
			if( Symmetry().X() && Symmetry().Y() )
				action( phase, mesh.GetMirror( true, true, false ) );
			if( Symmetry().Y() && Symmetry().Z() )
				action( phase, mesh.GetMirror( false, true, true ) );
			if( Symmetry().X() && Symmetry().Z() )
				action( phase, mesh.GetMirror( true, false, true ) );
			if( Symmetry().X() && Symmetry().Y() && Symmetry().Z() )
				action( phase, mesh.GetMirror( true, true, true ) );
			
			// Clean up
			action.Postwork( phase );
		}

		BrushMode mode_;
		PositionMode position_edit_;
		bool color_edit_;
		bool flip_;
		unsigned radius_;
		float strength_, intensity_;
		float pressure_;
		bool radius_pressure_;
		bool strength_pressure_;
		bool intensity_pressure_;
		Color color_;
		SymmetryData symmetry_;
		bool once_, dot_;

		Glib::RefPtr< Gdk::Pixbuf > shape_;

		// Data for the current sculpt action
		float back_limit_, front_limit_;
		float cursor_z_;
	};
}

#endif // BRUSH_H