public void ResizeMaintainsCenter()
{
TextOutline clOutline = new TextOutline("Cl", font, emSize);
var orgCenter = clOutline.GetCenter();
var newCenter = clOutline.Resize(21, 5).GetCenter();
Assert.AreEqual(newCenter.X, orgCenter.X, 0.01);
Assert.AreEqual(newCenter.Y, orgCenter.Y, 0.01);
}
public void ResizeModifiesBounds()
{
TextOutline original = new TextOutline("Cl", font, emSize);
TextOutline transformed = original.Resize(2, 2);
var oBounds = original.GetBounds();
var tBounds = transformed.GetBounds();
Assert.AreEqual(oBounds.X - oBounds.Width / 2, tBounds.X, 0.01);
Assert.AreEqual(oBounds.Y - oBounds.Height / 2, tBounds.Y, 0.01);
Assert.AreEqual(oBounds.Width * 2, tBounds.Width, 0.01);
Assert.AreEqual(oBounds.Height * 2, tBounds.Height, 0.01);
}
public IRenderingElement Generate()
{
if (!delocalisedDonuts)
{
return(null);
}
var group = new ElementGroup();
smallest = Cycles.EdgeShort.Find(mol).ToRingSet();
foreach (var ring in smallest)
{
if (!CanDelocalise(ring))
{
continue;
}
foreach (var bond in ring.Bonds)
{
bonds.Add(bond);
}
int charge = 0;
int unpaired = 0;
foreach (var atom in ring.Atoms)
{
var q = atom.FormalCharge ?? 0;
if (q == 0)
{
continue;
}
int nCyclic = 0;
foreach (var bond in mol.GetConnectedBonds(atom))
{
if (bond.IsInRing)
{
nCyclic++;
}
}
if (nCyclic > 2)
{
continue;
}
atoms.Add(atom);
charge += q;
}
var p2 = GeometryUtil.Get2DCenter(ring);
if (charge != 0)
{
var qText = charge < 0 ? "–" : "+";
if (charge < -1)
{
qText = Math.Abs(charge) + qText;
}
else if (charge > +1)
{
qText = Math.Abs(charge) + qText;
}
TextOutline qSym = new TextOutline(qText, font, emSize);
qSym = qSym.Resize(1 / scale, -1 / scale);
qSym = qSym.Translate(p2.X - qSym.GetCenter().X,
p2.Y - qSym.GetCenter().Y);
group.Add(GeneralPath.ShapeOf(qSym.GetOutline(), fgColor));
}
double s = GeometryUtil.GetBondLengthMedian(ring);
double n = ring.Bonds.Count;
double r = s / (2 * Math.Tan(Math.PI / n));
group.Add(new OvalElement(new WPF::Point(p2.X, p2.Y), r - 1.5 * dbSpacing,
stroke, false, fgColor));
}
return(group);
}
/// <summary>
/// Generates an atom symbol for a pseudo atom.
/// </summary>
/// <returns>the atom symbol</returns>
public AtomSymbol GeneratePseudoSymbol(string label, HydrogenPosition position)
{
var italicFont = new Typeface(font.FontFamily, FontStyles.Italic, FontWeights.Bold, font.Stretch);
var outlines = new List <TextOutline>(3);
int beg = 0;
int pos = 0;
int len = label.Length;
// upper case followed by lower case
while (pos < len && IsUpperCase(label[pos]))
{
pos++;
}
if (label[0] != 'R') // Ar is not A^r but 'Ra' is R^a etc
{
while (pos < len && IsLowerCase(label[pos]))
{
pos++;
}
}
if (pos > beg)
{
outlines.Add(new TextOutline(label.Substring(beg, pos), italicFont, emSize));
beg = pos;
// 2a etc.
while (pos < len && IsDigit(label[pos]))
{
pos++;
}
while (pos < len && IsLowerCase(label[pos]))
{
pos++;
}
if (pos > beg)
{
var outline = new TextOutline(label.Substring(beg, pos - beg), italicFont, emSize);
outline = outline.Resize(scriptSize, scriptSize);
outline = PositionSuperscript(outlines[0], outline);
outlines.Add(outline);
}
int numPrimes = 0;
while (pos < len)
{
switch (label[pos])
{
case '\'': numPrimes++; break;
case '`': numPrimes++; break;
case '‘': numPrimes++; break;
case '’': numPrimes++; break;
case '‛': numPrimes++; break;
case '“': numPrimes += 2; break;
case '”': numPrimes += 2; break;
case '′': numPrimes++; break;
case '″': numPrimes += 2; break;
case '‴': numPrimes += 3; break;
case '⁗': numPrimes += 4; break;
case '‵': numPrimes++; break;
case '‶': numPrimes += 2; break;
case '‷': numPrimes += 3; break;
case '´': numPrimes++; break;
case 'ˊ': numPrimes++; break;
case '́': numPrimes++; break;
case '˝': numPrimes += 2; break;
case '̋': numPrimes += 2; break;
default:
goto break_PRIMES;
}
pos++;
}
break_PRIMES:
if (pos < len)
{
return(new AtomSymbol(
new TextOutline(label, italicFont, emSize),
Array.Empty <TextOutline>()));
}
else
{
TextOutline outline = null;
var ref_ = outlines[outlines.Count - 1];
switch (numPrimes)
{
case 0: break;
case 1: outline = new TextOutline("′", font, emSize); break;
case 2: outline = new TextOutline("″", font, emSize); break;
case 3: outline = new TextOutline("‴", font, emSize); break;
default:
string lab = "";
while (numPrimes-- > 0)
{
lab += "′";
}
outline = new TextOutline(lab, font, emSize);
break;
}
if (outline != null)
{
if (outlines.Count > 1)
{
outline = outline.Resize(scriptSize, scriptSize);
}
outline = PositionSuperscript(ref_, outline);
outlines.Add(outline);
}
}
// line up text
for (int i = 1; i < outlines.Count; i++)
{
var ref_ = outlines[i - 1];
var curr = outlines[i];
outlines[i] = PositionAfter(ref_, curr);
}
return(new AtomSymbol(outlines[0], outlines.GetRange(1, outlines.Count - 1)));
}
else
{
return(new AtomSymbol(new TextOutline(label, italicFont, emSize), Array.Empty <TextOutline>()));
}
}
