public Drawing(DrawingSettings settings, ReadOnlyTree <string, Layer> layers, string author)
: this(settings, layers, layers.GetKeys().OrderBy(x => x).First(), author)
{
}
public bool ReadDrawing(string fileName, Stream fileStream, out Drawing drawing, out ViewPort viewPort)
{
var file = DxfFile.Load(fileStream);
var layers = new ReadOnlyTree <string, Layer>();
foreach (var layer in file.Layers)
{
layers = layers.Insert(layer.Name, new Layer(layer.Name, color: layer.Color.ToColor(), isVisible: layer.IsLayerOn));
}
foreach (var item in file.Entities)
{
var layer = GetOrCreateLayer(ref layers, item.Layer);
// create the entity
var entity = item.ToEntity();
// add the entity to the appropriate layer
if (entity != null)
{
layer = layer.Add(entity);
layers = layers.Insert(layer.Name, layer);
}
}
foreach (var block in file.Blocks)
{
var layer = GetOrCreateLayer(ref layers, block.Layer);
// create the aggregate entity
var children = ReadOnlyList <Entity> .Empty();
foreach (var item in block.Entities)
{
var tempEnt = item.ToEntity();
if (tempEnt != null)
{
children = children.Add(tempEnt);
}
}
// add the entity to the appropriate layer
if (children.Count != 0)
{
layer = layer.Add(new AggregateEntity(block.BasePoint.ToPoint(), children));
layers = layers.Insert(layer.Name, layer);
}
}
drawing = new Drawing(
settings: new DrawingSettings(fileName, file.Header.UnitFormat.ToUnitFormat(), file.Header.UnitPrecision),
layers: layers,
currentLayerName: file.Header.CurrentLayer ?? layers.GetKeys().OrderBy(x => x).First(),
author: null);
drawing.Tag = file;
// prefer `*ACTIVE` view port first
// TODO: use `DxfFile.ActiveViewPort` when available
var vp = file.ViewPorts.FirstOrDefault(v => string.Compare(v.Name, DxfViewPort.ActiveViewPortName, StringComparison.OrdinalIgnoreCase) == 0)
?? file.ViewPorts.FirstOrDefault();
if (vp != null)
{
viewPort = new ViewPort(
vp.LowerLeft.ToPoint(),
vp.ViewDirection.ToVector(),
Vector.YAxis,
vp.ViewHeight);
}
else
{
viewPort = null; // auto-set it later
}
return(true);
}
