protected static IEnumerable <PathSegment> GetPathSegments(string attributeValue)
{
IList <IPathCommand> stack = null;
var bounds = new XyRect();
var cursor = new PxPoint(0, 0);
var start = new PxPoint(0, 0);
IPathCommand previous = null;
foreach (var command in GetCommands(attributeValue))
{
var c = CreateSegment(cursor, previous, start, command.Key, command.Value);
previous = c;
if (command.Key == 'M' || command.Key == 'm')
{
if (stack != null)
{
//If we get here, we have an existing path that has not been closed.
// We add a dummy closepath
stack.Add(new ClosePathCommand(cursor, start, false));
yield return(new PathSegment(stack, bounds, false));
}
stack = new List <IPathCommand>();
bounds = new XyRect();
start = c.NextPoint;
stack.Add(c);
}
else if (command.Key == 'Z' || command.Key == 'z')
{
if (stack != null)
{
stack.Add(c);
yield return(new PathSegment(stack, bounds, true));
}
stack = null;
bounds = new XyRect();
}
else
{
stack?.Add(c);
}
cursor = c.NextPoint;
bounds.AddPoint(cursor);
}
if (stack != null)
{
//If we get here, we have an existing path that has not been closed.
// We add a dummy closepath
stack.Add(new ClosePathCommand(cursor, start, false));
yield return(new PathSegment(stack, bounds, false));
}
}
protected override bool TryCreate(string attributeValue, out Path path)
{
var bounds = new XyRect();
var segments = new List <PathSegment>();
foreach (var ps in GetPathSegments(attributeValue))
{
segments.Add(ps);
bounds = bounds.Add(ps.Bounds);
}
path = new Path(segments.ToArray(), bounds);
return(true);
}
public static bool TryParse(string value, out Path path)
{
var bounds = new XyRect();
var segments = new List <PathSegment>();
foreach (var ps in GetPathSegments(value))
{
segments.Add(ps);
bounds = bounds.Add(ps.Bounds);
}
path = new Path(segments.ToArray(), bounds);
return(true);
}
