public object Clone()
{
HatchPatternLineDefinition copy = new HatchPatternLineDefinition
{
Angle = this.angle,
Origin = this.origin,
Delta = this.delta,
};
foreach (double dash in this.dashPattern)
{
copy.DashPattern.Add(dash);
}
return(copy);
}
public static HatchPattern FromFile(string file, string patternName)
{
HatchPattern pattern = null;
using (StreamReader reader = new StreamReader(File.Open(file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite), true))
{
while (!reader.EndOfStream)
{
string line = reader.ReadLine();
if (line == null)
{
throw new FileLoadException("Unknown error reading pat file.", file);
}
// lines starting with semicolons are comments
if (line.StartsWith(";"))
{
continue;
}
// every pattern definition starts with '*'
if (!line.StartsWith("*"))
{
continue;
}
// reading pattern name and description
int endName = line.IndexOf(','); // the first semicolon divides the name from the description that might contain more semicolons
string name = line.Substring(1, endName - 1);
string description = line.Substring(endName + 1, line.Length - endName - 1);
// remove start and end spaces
description = description.Trim();
if (!name.Equals(patternName, StringComparison.OrdinalIgnoreCase))
{
continue;
}
// we have found the pattern name, the next lines of the file contains the pattern definition
line = reader.ReadLine();
if (line == null)
{
throw new FileLoadException("Unknown error reading pat file.", file);
}
pattern = new HatchPattern(name, description);
while (!reader.EndOfStream && !line.StartsWith("*") && !string.IsNullOrEmpty(line))
{
string[] tokens = line.Split(',');
double angle = double.Parse(tokens[0]);
Vector2 origin = new Vector2(double.Parse(tokens[1]), double.Parse(tokens[2]));
Vector2 delta = new Vector2(double.Parse(tokens[3]), double.Parse(tokens[4]));
HatchPatternLineDefinition lineDefinition = new HatchPatternLineDefinition
{
Angle = angle,
Origin = origin,
Delta = delta,
};
// the rest of the info is optional if it exists define the dash pattern definition
for (int i = 5; i < tokens.Length; i++)
{
lineDefinition.DashPattern.Add(double.Parse(tokens[i]));
}
pattern.LineDefinitions.Add(lineDefinition);
pattern.Type = HatchType.UserDefined;
line = reader.ReadLine();
if (line == null)
{
throw new FileLoadException("Unknown error reading pat file.", file);
}
line = line.Trim();
}
// there is no need to continue parsing the file, the info has been read
break;
}
}
return(pattern);
}