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package tim.prune.data;
public class MarkingData
{
private final Track _track;
private byte[] _flags = null;
public MarkingData(Track inTrack) {
_track = inTrack;
}
public boolean isPointMarkedForDeletion(int inIndex)
{
checkSize();
if (_flags != null && inIndex >= 0 && inIndex < _flags.length) {
return (_flags[inIndex] % 2) != 0;
}
return false;
}
public boolean isPointMarkedForSegmentBreak(int inIndex)
{
checkSize();
if (_flags != null && inIndex >= 0 && inIndex < _flags.length)
{
int flag = _flags[inIndex] / 2;
return (flag % 2) != 0;
}
return false;
}
private void checkSize()
{
if (_flags != null && _flags.length != _track.getNumPoints()) {
_flags = null;
}
}
public void clear() {
_flags = null;
}
public void markPointsForDeletion(boolean[] inDeleteFlags) {
markPointsForDeletion(inDeleteFlags, null);
}
public void markPointsForDeletion(boolean[] inDeleteFlags, boolean[] inSegmentFlags)
{
final int numFlags = inDeleteFlags == null ? 0 : inDeleteFlags.length;
if (_flags == null || _flags.length != numFlags) {
_flags = new byte[numFlags];
}
boolean[] segmentFlags = inSegmentFlags;
if (inSegmentFlags != null && inSegmentFlags.length != numFlags) {
segmentFlags = null;
}
for (int i=0; i<numFlags; i++)
{
boolean deleteFlag = inDeleteFlags[i];
boolean segmentFlag = segmentFlags != null && segmentFlags[i];
int flag = (deleteFlag ? 1 : 0) + (segmentFlag ? 2 : 0);
_flags[i] = (byte) flag;
}
}
public void markPointForDeletion(int inIndex) {
markPointForDeletion(inIndex, true);
}
public void markPointForDeletion(int inIndex, boolean inDelete) {
markPointForDeletion(inIndex, inDelete, false);
}
public void markPointForDeletion(int inIndex, boolean inDelete, boolean inSegmentBreak)
{
checkSize();
if (_flags == null)
{
if (!inDelete) {
return;
}
_flags = new byte[_track.getNumPoints()];
}
if (inIndex < 0 || inIndex >= _flags.length) {
return;
}
_flags[inIndex] = combineFlags(inDelete, inSegmentBreak);
}
private byte combineFlags(boolean inDelete, boolean inSegmentBreak)
{
if (inDelete) {
return (byte) ((inSegmentBreak ? 2 : 0) + 1);
}
return 0;
}
public boolean hasMarkedPoints()
{
checkSize();
if (_flags != null)
{
for (byte flag : _flags)
{
if (flag != 0) {
return true;
}
}
}
return false;
}
/**
* @return number of points which are marked to be deleted
*/
public int getNumDeleted()
{
int numDeleted = 0;
checkSize();
if (_flags != null)
{
for (byte flag : _flags)
{
if (flag != 0) {
numDeleted++;
}
}
}
return numDeleted;
}
}
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