public Bar GetFirstVisibleBarWithVisibleHead()
{
var score = CurrentScore;
if (score == null)
{
return(null);
}
var clientSize = ClientSize;
var bars = score.Bars;
var barArea = ScoreEditorLayout.GetBarArea(Config, clientSize);
var barStartY = (float)ScrollOffsetY;
var unit = Look.BarLineSpaceUnit;
foreach (var bar in bars)
{
var numberOfGrids = bar.GetNumberOfGrids();
var visible = ScoreEditorLayout.IsBarHeadVisible(barArea, barStartY);
if (visible)
{
return(bar);
}
barStartY -= numberOfGrids * unit;
}
return(null);
}
/// <summary>
/// Performs a hit test and returns the result.
/// </summary>
/// <param name="x">The X coordinate of the hit test point, relative to this control.</param>
/// <param name="y">The Y coordinate of the hit test point, relative to this control.</param>
/// <returns>The result of this hit test.</returns>
public ScoreEditorHitTestResult HitTest(int x, int y)
{
var score = Project?.Project.GetScore(Difficulty);
if (score == null || !score.HasAnyBar)
{
return(ScoreEditorHitTestResult.GetInvalidResult(x, y));
}
var barArea = ScoreEditorLayout.GetBarArea(Config, ClientSize);
if (!barArea.Contains(x, y))
{
return(ScoreEditorHitTestResult.GetInvalidResult(x, y));
}
var config = Config;
ScoreEditorHitRegion hitRegion;
var relativeX = x - barArea.Left;
if (relativeX < config.InfoAreaWidth)
{
hitRegion = ScoreEditorHitRegion.InfoArea;
}
else if (relativeX < config.InfoAreaWidth + config.GridNumberAreaWidth - config.NoteRadius)
{
hitRegion = ScoreEditorHitRegion.GridNumberArea;
}
else if (relativeX < config.InfoAreaWidth + config.GridNumberAreaWidth + config.GridAreaWidth + config.NoteRadius)
{
hitRegion = ScoreEditorHitRegion.GridArea;
}
else
{
hitRegion = ScoreEditorHitRegion.SpecialNoteArea;
}
var gridArea = ScoreEditorLayout.GetGridArea(config, ClientSize);
var columnWidth = gridArea.Width / (config.NumberOfColumns - 1);
var barStartY = (float)ScrollOffsetY;
if (y > barStartY + config.NoteRadius)
{
return(ScoreEditorHitTestResult.GetInvalidResult(x, y));
}
var unit = Look.BarLineSpaceUnit;
var spaceUnitRatio = ScoreEditorLayout.SpaceUnitRadiusRatio;
foreach (var bar in score.Bars)
{
var numGrids = bar.GetNumberOfGrids();
var barHeight = numGrids * unit;
var hitInThisBar = barStartY + config.NoteRadius >= y && y > barStartY - (barHeight - config.NoteRadius);
if (!hitInThisBar)
{
// Continue to the next bar.
barStartY -= barHeight;
continue;
}
// Calculate zooming compensation.
var firstClearDrawnRatio = ScoreEditorLayout.BarZoomRatio.FirstOrDefault(i => unit * i >= config.NoteRadius * spaceUnitRatio);
if (firstClearDrawnRatio == 0)
{
firstClearDrawnRatio = numGrids;
}
var newUnit = unit * firstClearDrawnRatio;
// Locate the column.
// Remember, gridArea is already adjusted.
var relativeGridX = x - gridArea.Left;
var testCol = (int)((relativeGridX + config.NoteRadius) / columnWidth);
if (testCol < 0)
{
return(new ScoreEditorHitTestResult(new Point(x, y), hitRegion, bar, null, -1, NotePosition.Default));
}
var testX = testCol * columnWidth;
int col;
if (Math.Abs(relativeGridX - testX) < config.NoteRadius)
{
col = testCol;
}
else if (Math.Abs(relativeGridX - (testX + columnWidth)) < config.NoteRadius)
{
col = testCol + 1;
}
else
{
if (hitRegion == ScoreEditorHitRegion.SpecialNoteArea)
{
col = -1;
}
else
{
return(new ScoreEditorHitTestResult(new Point(x, y), hitRegion, bar, null, -1, NotePosition.Default));
}
}
// Y position of the hit, relative to start of this bar.
var relativeY = -(y - barStartY);
// List the gaming note in current column.
var possibleNotesInColumn = bar.Notes.Where(n => (int)n.Basic.FinishPosition == col + 1).ToList();
// Variables for row locating.
int testRow, row;
float testY;
// If no note is hit, follow the traditional algorithm to find if there is any hit on special notes.
if (possibleNotesInColumn.Count == 0)
{
// Locate the row.
testRow = (int)((relativeY + config.NoteRadius) / newUnit);
if (testRow < 0)
{
break;
}
testY = testRow * newUnit;
if (Math.Abs(relativeY - testY) < config.NoteRadius)
{
row = testRow;
}
else if (Math.Abs(relativeY - (testY + newUnit)) < config.NoteRadius)
{
row = testRow + 1;
}
else
{
return(new ScoreEditorHitTestResult(new Point(x, y), hitRegion, bar, null, -1, NotePosition.Default));
}
row *= firstClearDrawnRatio;
// Hit any gaming note?
var note = bar.Notes.FirstOrDefault(n => n.Basic.IndexInGrid == row && (int)n.Basic.FinishPosition == col + 1);
// Hit any special note?
if (note == null && hitRegion == ScoreEditorHitRegion.SpecialNoteArea)
{
note = bar.Notes.FirstOrDefault(n => n.Helper.IsSpecial && n.Basic.IndexInGrid == row);
}
var result = new ScoreEditorHitTestResult(new Point(x, y), hitRegion, bar, note, row, col + 1);
return(result);
}
// Otherwise, use the new algorithm to find a possible note in current column.
possibleNotesInColumn.Sort(Note.TimingComparison);
var noteRadius = config.NoteRadius;
for (var i = 0; i < possibleNotesInColumn.Count; ++i)
{
var currentNote = possibleNotesInColumn[i];
var currentY = unit * currentNote.Basic.IndexInGrid;
// Is the Y coordinate inside current note's region?
if (currentY - noteRadius <= relativeY && relativeY <= currentY + noteRadius)
{
// We got a possible match!
Note nextNote;
float nextY;
if (i < possibleNotesInColumn.Count - 1)
{
// The next note is in the same bar.
nextNote = possibleNotesInColumn[i + 1];
nextY = unit * nextNote.Basic.IndexInGrid;
}
else
{
// The next note is in the next bar, or...
var nextBar = bar.GetNextBar();
// it is too far away (then ignore it, we found a match).
if (nextBar == null || nextBar.Notes.Count == 0)
{
var result = new ScoreEditorHitTestResult(new Point(x, y), hitRegion, bar, currentNote, currentNote.Basic.IndexInGrid, col + 1);
return(result);
}
var notesOnSameColumnInNextBar = nextBar.Notes.Where(n => (int)n.Basic.FinishPosition == col + 1).ToList();
notesOnSameColumnInNextBar.Sort(Note.TimingComparison);
nextNote = notesOnSameColumnInNextBar.FirstOrDefault();
if (nextNote == null)
{
// Also too far away. We've found a match.
var result = new ScoreEditorHitTestResult(new Point(x, y), hitRegion, bar, currentNote, currentNote.Basic.IndexInGrid, col + 1);
return(result);
}
nextY = barHeight + unit * nextNote.Basic.IndexInGrid;
}
// Is the Y coordinate not overlapped by the next note (because the notes are drawn from bottom to top)?
if (relativeY < nextY - noteRadius)
{
var result = new ScoreEditorHitTestResult(new Point(x, y), hitRegion, bar, currentNote, currentNote.Basic.IndexInGrid, col + 1);
return(result);
}
}
}
// Locate the row. Again.
testRow = (int)((relativeY + config.NoteRadius) / newUnit);
if (testRow < 0)
{
break;
}
testY = testRow * newUnit;
if (Math.Abs(relativeY - testY) < config.NoteRadius)
{
row = testRow;
}
else if (Math.Abs(relativeY - (testY + newUnit)) < config.NoteRadius)
{
row = testRow + 1;
}
else
{
return(new ScoreEditorHitTestResult(new Point(x, y), hitRegion, bar, null, -1, NotePosition.Default));
}
row *= firstClearDrawnRatio;
// Sorry, no can do. Maybe you hit the empty area.
return(new ScoreEditorHitTestResult(new Point(x, y), hitRegion, bar, null, row, col + 1));
}
return(new ScoreEditorHitTestResult(new Point(x, y), hitRegion, null, null, -1, NotePosition.Default));
}