libsynfig-dev 1.2.1-0ubuntu4 / usr / include / synfig-1.0 / synfig / blinepoint.h

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/* === S Y N F I G ========================================================= */
/*!	\file blinepoint.h
**	\brief Template Header
**
**	$Id$
**
**	\legal
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**
**	This package 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 package 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.
**	\endlegal
*/
/* ========================================================================= */

/* === S T A R T =========================================================== */

#ifndef __SYNFIG_BLINEPOINT_H
#define __SYNFIG_BLINEPOINT_H

/* === H E A D E R S ======================================================= */

#include "vector.h"
#include "uniqueid.h"
#include <algorithm>

/* === M A C R O S ========================================================= */

/* === T Y P E D E F S ===================================================== */

/* === C L A S S E S & S T R U C T S ======================================= */

namespace synfig {

class BLinePoint : public UniqueID
{
private:
	Point	vertex_;
	Vector	tangent_[2];
	float	width_;
	float	origin_;
	bool	split_tangent_radius_;
	bool	split_tangent_angle_;
	bool	boned_vertex_;
	Point	vertex_setup_;

	// True if split_tangent_radius == split_tangent_angle == true otherwise false
	bool	split_tangent_both_;
	// True if split_tangent_radius == split_tangent_angle == false otherwise false
	bool	merge_tangent_both_;

	// Used to store the tangent2 when split_radius=true && split_angle==false
	Vector	tangent2_radius_split_;
	// Used to store the tangent2 when split_radius=false && split_angle==true
	Vector	tangent2_angle_split_;

	void	update_flags();
	void	update_tangent2();

public:

	BLinePoint():
		vertex_(Point(0,0)),
		width_(1),
		origin_(0.0),
		split_tangent_radius_(true),
		split_tangent_angle_(false),
		boned_vertex_(false),
		vertex_setup_(vertex_)
	{
		tangent_[0] = Point(0,0);
		tangent_[1] = Point(0,0);
		update_flags();
	}

	const Point& get_vertex()const { return vertex_; }
	void set_vertex(const Point& x) { vertex_=x; vertex_setup_=vertex_;}

	const Vector& get_tangent1()const { return tangent_[0];	}
	const Vector& get_tangent2()const
	{
		if(merge_tangent_both_)
			return tangent_[0];
		if(split_tangent_both_)
			return tangent_[1];
		if(split_tangent_radius_)
			return tangent2_radius_split_;
		return tangent2_angle_split_;
	}
	void set_tangent(const Vector& x) { tangent_[0]=tangent_[1]=x; update_tangent2(); }
	void set_tangent1(const Vector& x) { tangent_[0]=x; update_tangent2(); }
	void set_tangent2(const Vector& x) { tangent_[1]=x; update_tangent2(); }

	const float& get_width()const { return width_; }
	void set_width(float x) { width_=x; }

	// We store the origin offset by 0.5 so that
	// can have the origin set to the default by zeroing
	// out the structure.
	float get_origin()const { return origin_+0.5f; }
	void set_origin(float x) { origin_=x-0.5f; }


	const bool& get_split_tangent_both()const { return split_tangent_both_; }
	void set_split_tangent_both(bool x=true) { set_split_tangent_radius(x); set_split_tangent_angle(x); }

	const bool& get_merge_tangent_both()const { return merge_tangent_both_; }
	void set_merge_tangent_both(bool x=true) { set_split_tangent_radius(!x); set_split_tangent_angle(!x); }


	const bool& get_split_tangent_radius()const { return split_tangent_radius_; }
	void set_split_tangent_radius(bool x=true)
	{
		split_tangent_radius_=x;
		update_tangent2();
		update_flags();
	}

	const bool& get_split_tangent_angle()const { return split_tangent_angle_; }
	void set_split_tangent_angle(bool x=true)
	{
		split_tangent_angle_=x;
		update_tangent2();
		update_flags();
	}
	const bool& get_boned_vertex_flag()const { return boned_vertex_; }
	void set_boned_vertex_flag(bool x=true) { boned_vertex_=x; }

	const Vector& get_vertex_setup()const { return vertex_setup_; }
	void set_vertex_setup(Vector& x) { vertex_setup_=x; }

	void reverse();

}; // END of class BLinePoint

}; // END of namespace synfig

/* === E N D =============================================================== */

#endif

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