private void ShrinkBondLinesPass2(Progress pb)
{
// so that they do not overlap label characters
if (_atomLabelCharacters.Count > 1)
{
pb.Show();
}
pb.Message = "Clipping Bond Lines - Pass 2";
pb.Value = 0;
pb.Maximum = _atomLabelCharacters.Count;
foreach (AtomLabelCharacter alc in _atomLabelCharacters)
{
pb.Increment(1);
double width = OoXmlHelper.ScaleCsTtfToCml(alc.Character.Width);
double height = OoXmlHelper.ScaleCsTtfToCml(alc.Character.Height);
if (alc.IsSubScript)
{
// Shrink bounding box
width = width * OoXmlHelper.SUBSCRIPT_SCALE_FACTOR;
height = height * OoXmlHelper.SUBSCRIPT_SCALE_FACTOR;
}
// Create rectangle of the bounding box with a suitable clipping margin
Rect cbb = new Rect(alc.Position.X - OoXmlHelper.CHARACTER_CLIPPING_MARGIN,
alc.Position.Y - OoXmlHelper.CHARACTER_CLIPPING_MARGIN,
width + (OoXmlHelper.CHARACTER_CLIPPING_MARGIN * 2),
height + (OoXmlHelper.CHARACTER_CLIPPING_MARGIN * 2));
//Debug.WriteLine("Character: " + alc.Ascii + " Rectangle: " + a);
// Just in case we end up splitting a line into two
List <BondLine> extraBondLines = new List <BondLine>();
// Select Lines which may require trimming
// By using LINQ to implement the following SQL
// Where (L.Right Between Cbb.Left And Cbb.Right)
// Or (L.Left Between Cbb.Left And Cbb.Right)
// Or (L.Top Between Cbb.Top And Cbb.Botton)
// Or (L.Bottom Between Cbb.Top And Cbb.Botton)
var targeted = from l in _bondLines
where (cbb.Left <= l.BoundingBox.Right & l.BoundingBox.Right <= cbb.Right)
| (cbb.Left <= l.BoundingBox.Left & l.BoundingBox.Left <= cbb.Right)
| (cbb.Top <= l.BoundingBox.Top & l.BoundingBox.Top <= cbb.Bottom)
| (cbb.Top <= l.BoundingBox.Bottom & l.BoundingBox.Bottom <= cbb.Bottom)
select l;
foreach (BondLine bl in targeted)
{
//pb.Increment(1);
Point start = new Point(bl.Start.X, bl.Start.Y);
Point end = new Point(bl.End.X, bl.End.Y);
//Debug.WriteLine(" Line From: " + start + " To: " + end);
int attempts = 0;
if (CohenSutherland.ClipLine(cbb, ref start, ref end, out attempts))
{
//Debug.WriteLine(" Clipped Line Start Point: " + start);
//Debug.WriteLine(" Clipped Line End Point: " + end);
bool bClipped = false;
if (Math.Abs(bl.Start.X - start.X) < EPSILON && Math.Abs(bl.Start.Y - start.Y) < EPSILON)
{
bl.Start = new Point(end.X, end.Y);
bClipped = true;
}
if (Math.Abs(bl.End.X - end.X) < EPSILON && Math.Abs(bl.End.Y - end.Y) < EPSILON)
{
bl.End = new Point(start.X, start.Y);
bClipped = true;
}
if (!bClipped)
{
// Line was clipped at both ends;
// 1. Generate new line
BondLine extraLine = new BondLine(new Point(end.X, end.Y), new Point(bl.End.X, bl.End.Y), bl.Type, bl.ParentBond, bl.ParentMolecule, bl.StartAtomId, bl.EndAtomId);
extraBondLines.Add(extraLine);
// 2. Trim existing line
bl.End = new Point(start.X, start.Y);
}
}
if (attempts >= 15)
{
Debug.WriteLine("Clipping failed !");
}
}
// Add any extra lines generated by this character into the List of Bond Lines
foreach (BondLine bl in extraBondLines)
{
_bondLines.Add(bl);
}
}
}
