public override Box CreateBox()
{
var width = size.x;
var height = size.y;
Box result;
if (BaseAtom == null)
{
result = StrutBox.Get(width, height, 0, 0);
}
else if (BaseAtom is SpaceAtom)
{
result = StrutBox.Get(width, height, 0, 0);
}
else if (width == 0 && BaseAtom is SymbolAtom)
{
result = VerticalBox.Get(DelimiterFactory.CreateBox(((SymbolAtom)BaseAtom).Name, height), height, align);
}
else if (height == 0 && BaseAtom is SymbolAtom)
{
result = HorizontalBox.Get(DelimiterFactory.CreateBoxHorizontal(((SymbolAtom)BaseAtom).Name, width), width, align);
}
else if (width == 0)
{
result = VerticalBox.Get(BaseAtom.CreateBox(), height, align);
}
else if (height == 0)
{
result = HorizontalBox.Get(BaseAtom.CreateBox(), width, align);
}
else
{
result = VerticalBox.Get(HorizontalBox.Get(BaseAtom.CreateBox(), width, align), height, align);
}
if (size.x + size.y > 1e-3f)
{
TexUtility.CentreBox(result);
}
return(result);
}
public Box CreateBox(float minHeight)
{
return(DelimiterFactory.CreateBox(Name, minHeight));
}
Box CreateBoxDefault(Box baseBox)
{
var factor = TexContext.Scale;
var clearance = TEXConfiguration.main.RootMargin * factor;
var lineThickness = TEXConfiguration.main.LineThickness * factor;
// Create box for radical sign.
var totalHeight = baseBox.totalHeight;
var radicalSignBox = DelimiterFactory.CreateBox(rootSymbol, totalHeight + clearance + lineThickness);
// Add some clearance to left and right side
baseBox = HorizontalBox.Get(baseBox, baseBox.width + clearance * 2, TexAlignment.Center);
// Add half of excess height to clearance.
lineThickness = Mathf.Max(radicalSignBox.height, lineThickness);
clearance = radicalSignBox.totalHeight - totalHeight - lineThickness * 2;
// Create box for square-root containing base box.
TexUtility.CentreBox(radicalSignBox);
var overBar = OverBar.Get(baseBox, clearance, lineThickness);
TexUtility.CentreBox(overBar);
var radicalContainerBox = HorizontalBox.Get(radicalSignBox);
radicalContainerBox.Add(overBar);
// If atom is simple radical, just return square-root box.
if (DegreeAtom == null)
{
return(radicalContainerBox);
}
// Atom is complex radical (nth-root).
// Create box for root atom.
TexContext.Environment.Push(TexUtility.GetRootStyle());
var rootBox = DegreeAtom.CreateBox();
TexContext.Environment.Pop();
var bottomShift = scale * (radicalContainerBox.height + radicalContainerBox.depth);
rootBox.shift = radicalContainerBox.depth - rootBox.depth - bottomShift;
// Create result box.
var resultBox = HorizontalBox.Get();
// Add box for negative kern.
TexContext.Environment.Push(TexEnvironment.Display);
var negativeKern = SpaceAtom.Get(-((radicalSignBox.width) / 2f), 0, 0).CreateBox();
TexContext.Environment.Pop();
var xPos = rootBox.width + negativeKern.width;
if (xPos < 0)
{
resultBox.Add(StrutBox.Get(-xPos, 0, 0, 0));
}
resultBox.Add(rootBox);
resultBox.Add(negativeKern);
resultBox.Add(radicalContainerBox);
return(resultBox);
}