/**
* Check that each staff begins with a clef.
*
* @return the number of clefs rebuilt
*/
@Override
public int runPattern() {
int successNb = 0;
int staffId = 0;
for (StaffInfo staff : system.getStaves()) {
staffId++;
// Define the inner box to intersect clef glyph(s)
int left = (int) Math.rint(staff.getAbscissa(HorizontalSide.LEFT));
Rectangle inner =
new Rectangle(
left + (2 * xOffset) + (clefWidth / 2),
staff.getFirstLine().yAt(left) + (staff.getHeight() / 2),
0,
0);
inner.grow((clefWidth / 2) - xOffset, (staff.getHeight() / 2) - yOffset);
// Remember the box, for visual debug
staff.addAttachment(" ci", inner);
// We must find a clef out of these glyphs
Collection<Glyph> glyphs = system.lookupIntersectedGlyphs(inner);
logger.debug("{}{}", staffId, Glyphs.toString(" int", glyphs));
// We assume than there can't be any alien among them, so we should
// rebuild the larger glyph which the alien had wrongly segmented
Set<Glyph> impacted = new HashSet<>();
for (Glyph glyph : glyphs) {
if (glyph.getShape() == Shape.STEM) {
logger.debug("Clef: Removed stem#{}", glyph.getId());
impacted.addAll(glyph.getConnectedNeighbors());
impacted.add(glyph);
}
}
if (!impacted.isEmpty()) {
// Rebuild the larger glyph
Glyph larger = system.buildCompound(impacted);
if (larger != null) {
logger.debug("Rebuilt stem-segmented {}", larger.idString());
}
// Recompute the set of intersected glyphs
glyphs = system.lookupIntersectedGlyphs(inner);
}
if (checkClef(glyphs, staff)) {
successNb++;
}
}
return successNb;
}
/**
* Try to recognize a clef in the compound of the provided glyphs.
*
* @param glyphs the parts of a clef candidate
* @param staff the containing staff
* @return true if successful
*/
private boolean checkClef(Collection<Glyph> glyphs, StaffInfo staff) {
if (glyphs.isEmpty()) {
return false;
}
// Check if we already have a clef among the intersected glyphs
Set<Glyph> clefs = Glyphs.lookupGlyphs(glyphs, clefGlyphPredicate);
Glyph orgClef = null;
if (!clefs.isEmpty()) {
if (Glyphs.containsManual(clefs)) {
return false; // Respect user decision
} else {
// Remember grade of the best existing clef
for (Glyph glyph : clefs) {
if ((orgClef == null) || (glyph.getGrade() > orgClef.getGrade())) {
orgClef = glyph;
}
}
}
}
// Remove potential aliens
Glyphs.purgeManuals(glyphs);
Glyph compound = system.buildTransientCompound(glyphs);
// Check if a clef appears in the top evaluations
Evaluation vote =
GlyphNetwork.getInstance().vote(compound, system, Grades.clefMinGrade, clefShapePredicate);
if ((vote != null) && ((orgClef == null) || (vote.grade > orgClef.getGrade()))) {
// We now have a clef!
// Look around for an even better result...
logger.debug("{} built from {}", vote.shape, Glyphs.toString(glyphs));
// Look for larger stuff
Rectangle outer = compound.getBounds();
outer.grow(xMargin, yMargin);
// Remember the box, for visual debug
staff.addAttachment("co", outer);
List<Glyph> outerGlyphs = system.lookupIntersectedGlyphs(outer);
outerGlyphs.removeAll(glyphs);
Collections.sort(outerGlyphs, Glyph.byReverseWeight);
final double minWeight = constants.minWeight.getValue();
for (Glyph g : outerGlyphs) {
// Consider only glyphs with a minimum weight
if (g.getNormalizedWeight() < minWeight) {
break;
}
logger.debug("Considering {}", g);
Glyph newCompound = system.buildTransientCompound(Arrays.asList(compound, g));
final Evaluation newVote =
GlyphNetwork.getInstance()
.vote(newCompound, system, Grades.clefMinGrade, clefShapePredicate);
if ((newVote != null) && (newVote.grade > vote.grade)) {
logger.debug("{} better built with {}", vote, g.idString());
compound = newCompound;
vote = newVote;
}
}
// Register the last definition of the clef
compound = system.addGlyph(compound);
compound.setShape(vote.shape, Evaluation.ALGORITHM);
logger.debug("{} rebuilt as {}", vote.shape, compound.idString());
return true;
} else {
return false;
}
}