Aegisub/aegisub/spline.h

// Copyright (c) 2007, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//   * Neither the name of the Aegisub Group nor the names of its contributors
//     may be used to endorse or promote products derived from this software
//     without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// -----------------------------------------------------------------------------
//
// AEGISUB
//
// Website: http://aegisub.cellosoft.com
// Contact: mailto:zeratul@cellosoft.com
//


#pragma once


///////////
// Headers
#include <wx/wxprec.h>
#include <list>
#include <vector>
#include "vector2d.h"


///////////////
// Curve types
enum CurveType {
	CURVE_INVALID,
	CURVE_POINT,
	CURVE_LINE,
	CURVE_BICUBIC
};


////////////////
// Spline curve
class SplineCurve {
public:
	Vector2D p1,p2,p3,p4;
	CurveType type;

	SplineCurve();
	void Split(SplineCurve &c1,SplineCurve &c2,float t=0.5);
};


/////////////////////////
// Spline managing class
class Spline {
public:
	std::list<SplineCurve> curves;

	Spline();

	wxString EncodeToASS();
	void DecodeFromASS(wxString str);

	void AppendCurve(SplineCurve &curve);
	void MovePoint(int curveIndex,int point,wxPoint pos);

	void GetPointList(std::vector<Vector2D> &points);

	void GetClosestParametricPoint(Vector2D reference,int &curve,float &t);
	Vector2D GetClosestPoint(Vector2D reference);
	Vector2D GetClosestControlPoint(Vector2D reference);
};