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LISTCENT.H
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C/C++ Source or Header
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1980-01-05
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87 lines
/*
* Copyright (c) 1987, 1988, 1989 Stanford University
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Stanford not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Stanford makes no representations about
* the suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* STANFORD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
* IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
// $Header: listcenter.h,v 1.8 89/10/09 14:48:38 linton Exp $
// declares classes CenterNode and CenterList.
#ifndef listcenter_h
#define listcenter_h
#include "list.h"
// A CenterNode contains two float values.
class CenterNode : public BaseNode {
public:
CenterNode (float x, float y) { cx = x; cy = y; }
float GetCx () { return cx; }
float GetCy () { return cy; }
protected:
float cx, cy; // stores a position
};
// A CenterList manages a list of CenterNodes.
class CenterList : public BaseList {
public:
CenterNode* First();
CenterNode* Last();
CenterNode* Prev();
CenterNode* Next();
CenterNode* GetCur();
CenterNode* Index(int);
};
// Cast these functions to return CenterNodes instead of BaseNodes.
inline CenterNode* CenterList::First () {
return (CenterNode*) BaseList::First();
}
inline CenterNode* CenterList::Last () {
return (CenterNode*) BaseList::Last();
}
inline CenterNode* CenterList::Prev () {
return (CenterNode*) BaseList::Prev();
}
inline CenterNode* CenterList::Next () {
return (CenterNode*) BaseList::Next();
}
inline CenterNode* CenterList::GetCur () {
return (CenterNode*) BaseList::GetCur();
}
inline CenterNode* CenterList::Index (int index) {
return (CenterNode*) BaseList::Index(index);
}
#endif