/// <summary>
/// Creates a TopEdge by inverting the bottomEdge
/// </summary>
public TopEdge(BottomEdge bottomEdge)
: base()
{
foreach (HLine line in bottomEdge.Lines)
{
HLine fLine = new HLine(line.Left, line.Right, -line.Y);
Lines.Add(fLine);
}
}
/// <summary>
/// Returns the (minimum) vertical distance to the bottom edge above.
/// This top edge and the bottom edge above belong to two diferent objects, for example two staves or two systems.
/// The returned value is positive if this top edge is completely below the bottomEdge argument.
/// </summary>
/// <param name="currentMinDist"></param>
/// <param name="rightEdge"></param>
/// <returns></returns>
public double DistanceToEdgeAbove(BottomEdge bottomEdge)
{
double minDist = double.MaxValue;
HashSet <double> allLeftXs = AllLeftXsInBothEdges(bottomEdge);
foreach (double leftX in allLeftXs)
{
double bottomEdgeYatLeftX = bottomEdge.YatX(leftX);
double topEdgeYatLeftX = this.YatX(leftX);
double dist = topEdgeYatLeftX - bottomEdgeYatLeftX;
minDist = minDist < dist ? minDist : dist;
}
return(minDist);
}
/// <summary>
/// Returns the (minimum) vertical distance to the bottom edge above.
/// This top edge and the bottom edge above belong to two diferent objects, for example two staves or two systems.
/// The returned value is positive if this top edge is completely below the bottomEdge argument.
/// </summary>
/// <param name="currentMinDist"></param>
/// <param name="rightEdge"></param>
/// <returns></returns>
public float DistanceToEdgeAbove(BottomEdge bottomEdge)
{
float minDist = float.MaxValue;
HashSet <float> allLeftXs = AllLeftXsInBothEdges(bottomEdge);
foreach (float leftX in allLeftXs)
{
float bottomEdgeYatLeftX = bottomEdge.YatX(leftX);
float topEdgeYatLeftX = this.YatX(leftX);
float dist = topEdgeYatLeftX - bottomEdgeYatLeftX;
minDist = minDist < dist ? minDist : dist;
}
return(minDist);
}
private HashSet <double> AllLeftXsInBothEdges(BottomEdge bottomEdge)
{
HashSet <double> allXs = new HashSet <double>();
foreach (HLine ht in Lines)
{
allXs.Add(ht.Left);
}
foreach (HLine ht in bottomEdge.Lines)
{
if (!allXs.Contains(ht.Left))
{
allXs.Add(ht.Left);
}
}
return(allXs);
}
private BottomEdge GetBottomEdge(int upperStaffIndex, int topVisibleStaffIndex, float pageWidth, float gap)
{
BottomEdge bottomEdge = null;
for(int i = upperStaffIndex; i >= topVisibleStaffIndex; --i)
{
Staff staff = Staves[i];
if(!(staff is HiddenOutputStaff) && staff.Metrics != null)
{
bottomEdge = new BottomEdge(staff, 0F, pageWidth, gap);
break;
}
}
return bottomEdge;
}
private void WriteConnectors(SvgWriter w, int systemNumber, PageFormat pageFormat)
{
List<bool> barlineContinuesDownList = pageFormat.BarlineContinuesDownList;
int topVisibleStaffIndex = TopUnHiddenStaffIndex();
Debug.Assert(barlineContinuesDownList[barlineContinuesDownList.Count - 1] == false);
Barline barline = null;
bool isFirstBarline = true;
for(int staffIndex = topVisibleStaffIndex; staffIndex < Staves.Count; staffIndex++)
{
Staff staff = Staves[staffIndex];
if(staff.Metrics != null)
{
Voice voice = staff.Voices[0];
float barlinesTop = staff.Metrics.StafflinesTop;
float barlinesBottom = staff.Metrics.StafflinesBottom;
#region set barlinesTop, barlinesBottom
switch(staff.NumberOfStafflines)
{
case 1:
barlinesTop -= (staff.Gap * 1.5F);
barlinesBottom += (staff.Gap * 1.5F);
break;
case 2:
case 3:
case 4:
barlinesTop -= staff.Gap;
barlinesBottom += staff.Gap;
break;
default:
break;
}
#endregion set barlinesTop, barlinesBottom
#region draw barlines down from staves
if(staffIndex < Staves.Count - 1)
{
//TopEdge topEdge = new TopEdge(Staves[staffIndex + 1], 0F, pageFormat.Right);
TopEdge topEdge = GetTopEdge(staffIndex + 1, pageFormat.Right);
if(topEdge != null)
{
BottomEdge bottomEdge = new BottomEdge(staff, 0F, pageFormat.Right, pageFormat.Gap);
isFirstBarline = true;
for(int i = 0; i < voice.NoteObjects.Count; ++i)
{
NoteObject noteObject = voice.NoteObjects[i];
barline = noteObject as Barline;
if(barline != null)
{
// draw grouping barlines between staves
if(barlineContinuesDownList[staffIndex - topVisibleStaffIndex] || isFirstBarline)
{
float top = bottomEdge.YatX(barline.Metrics.OriginX);
float bottom = topEdge.YatX(barline.Metrics.OriginX);
bool isLastNoteObject = (i == (voice.NoteObjects.Count - 1));
barline.WriteSVG(w, top, bottom, pageFormat.BarlineStrokeWidth, pageFormat.StafflineStemStrokeWidth, isLastNoteObject, true);
isFirstBarline = false;
}
}
}
}
}
#endregion
}
}
}
private HashSet<float> AllLeftXsInBothEdges(BottomEdge bottomEdge)
{
HashSet<float> allXs = new HashSet<float>();
foreach(HLine ht in Lines)
{
allXs.Add(ht.Left);
}
foreach(HLine ht in bottomEdge.Lines)
{
if(!allXs.Contains(ht.Left))
{
allXs.Add(ht.Left);
}
}
return allXs;
}
/// <summary>
/// Returns the (minimum) vertical distance to the bottom edge above.
/// This top edge and the bottom edge above belong to two diferent objects, for example two staves or two systems.
/// The returned value is positive if this top edge is completely below the bottomEdge argument.
/// </summary>
/// <param name="currentMinDist"></param>
/// <param name="rightEdge"></param>
/// <returns></returns>
public float DistanceToEdgeAbove(BottomEdge bottomEdge)
{
float minDist = float.MaxValue;
HashSet<float> allLeftXs = AllLeftXsInBothEdges(bottomEdge);
foreach(float leftX in allLeftXs)
{
float bottomEdgeYatLeftX = bottomEdge.YatX(leftX);
float topEdgeYatLeftX = this.YatX(leftX);
float dist = topEdgeYatLeftX - bottomEdgeYatLeftX;
minDist = minDist < dist ? minDist : dist;
}
return minDist;
}
/// <summary>
/// Creates a TopEdge by inverting the bottomEdge
/// </summary>
public TopEdge(BottomEdge bottomEdge)
: base()
{
foreach(HLine line in bottomEdge.Lines)
{
HLine fLine = new HLine(line.Left, line.Right, -line.Y);
Lines.Add(fLine);
}
}
private void JustifyVertically(float pageWidth, float gap)
{
int topVisibleStaffIndex = TopVisibleStaffIndex();
Debug.Assert(Staves[topVisibleStaffIndex].Metrics.StafflinesTop == 0);
if((topVisibleStaffIndex + 1) < Staves.Count)// There must be at least one visible staff (an InputStaff).
{
for(int i = (topVisibleStaffIndex + 1); i < Staves.Count; ++i)
{
BottomEdge bottomEdge = new BottomEdge(Staves[i - 1], 0F, pageWidth, gap);
TopEdge topEdge = new TopEdge(Staves[i], 0F, pageWidth);
float separation = topEdge.DistanceToEdgeAbove(bottomEdge);
float dy = gap - separation;
// limit stafflineHeight to multiples of pageFormat.Gap so that stafflines
// are not displayed as thick grey lines.
dy = dy - (dy % gap) + gap; // the minimum space bewteen stafflines is gap pixels.
if(dy > 0F)
{
for(int j = i; j < Staves.Count; ++j)
{
Staves[j].Metrics.Move(0F, dy);
}
this.Metrics.StafflinesBottom += dy;
}
}
}
this.Metrics = new SystemMetrics();
foreach(Staff staff in Staves)
{
if(!(staff is InvisibleOutputStaff))
this.Metrics.Add(staff.Metrics);
}
Debug.Assert(this.Metrics.StafflinesTop == 0);
}
