/*
* Trace2DLtdReplcacing, an array- based fast implementation of an ITrace2D
* that only allows a single tracepoint with a certain x- value.
* Copyright (c) 2004 - 2011 Achim Westermann, Achim.Westermann@gmx.de
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* If you modify or optimize the code in a useful way please let me know.
* Achim.Westermann@gmx.de
*/
package info.monitorenter.gui.chart.traces;
import info.monitorenter.gui.chart.ITracePoint2D;
import java.util.Iterator;
/**
* In addition to the <code> Trace2DLtd</code> this class offers the guarantee only to allow a
* single tracepoint with a certain x- value. If a new tracepoint is added whose x- value is already
* contained, the new tracepoints values will get assigned to the certain old tracepoint respecting
* the fact that only an additional changed y- value occurs. <br>
* The <code>add</code> methods increase complexity to factor n but some event - handling may be
* saved (no change of x and y). <br>
* Tracepoints with x- values not contained before will be appended to the end of the internal data-
* structure. <br>
*
* @author <a href='mailto:Achim.Westermann@gmx.de'>Achim Westerman </a>
* @version $Revision: 1.16 $
*/
public class Trace2DLtdReplacing
extends Trace2DLtd {
/** Generated <code>serialVersionUID</code>. */
private static final long serialVersionUID = -6048361222161598032L;
/**
* Constructs a <code>Trace2DLtdReplacing</code> with a default buffer size of 100.
*/
public Trace2DLtdReplacing() {
this(100);
}
/**
* Constructs an instance with a buffer size of bufsize.
* <p>
*
* @param bufsize
* the maximum amount of points that will be displayed.
*/
public Trace2DLtdReplacing(final int bufsize) {
super(bufsize);
}
/**
* @see ATrace2D#addPointInternal(info.monitorenter.gui.chart.ITracePoint2D)
*/
@Override
protected boolean addPointInternal(final ITracePoint2D p) {
boolean result = false;
boolean located = false;
ITracePoint2D tmp;
double tmpx;
double tmpy;
Iterator<ITracePoint2D> it = this.m_buffer.iteratorF2L();
while (it.hasNext()) {
tmp = it.next();
tmpx = tmp.getX();
if (tmpx == p.getX()) {
tmpy = p.getY();
if (tmpy == tmp.getY()) {
// performs bound checks and fires property changes
tmp.setLocation(tmpx, tmpy);
// don't need bound checks of calling addPoint.
located = true;
}
}
}
if (!located) {
// no matching point was found and shifted:
result = super.addPointInternal(p);
}
return result;
}
}