/*

SubPath

Copyright (c) 2002 OpenBeOS. 

Author: 
	Michael Pfeiffer

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

*/

#ifndef SUBPATH_H
#define SUBPATH_H

#include <Point.h>

class SubPath {
private:
	enum {
		kInitialSize = 5,
		kIncrement = 10
	};
	int32   fSize;    // allocated points
	int32   fLength;  // number of valid points
	BPoint *fPoints;
	bool    fClosed;  // subpath connects last point with first point

	void CheckSize(int size);
	bool InBounds(int i) { return 0 <= i && i < fLength; }

public:
	SubPath(int size = 10);
	~SubPath();
	void MakeEmpty();
	void Truncate(int numOfPoints);
	
	void AddPoint(BPoint p);
	void Close();
	void Open();

	int32  CountPoints() const { return fLength; }
	BPoint PointAt(int i);
	void   AtPut(int i, BPoint p);
	bool   IsClosed() const    { return fClosed; } 
	void   Print(); // for debugging
};

#endif
