/// <summary>
/// Initializes a new instance of the <c>Underlay</c> class.
/// </summary>
/// <param name="definition">Underlay definition.</param>
public Underlay(UnderlayDefinition definition)
: base(EntityType.Underlay, DxfObjectCode.Underlay)
{
this.definition = definition;
this.position = Vector3.Zero;
this.scale = new Vector3(1.0);
this.rotation = 0.0;
this.contrast = 100;
this.fade = 0;
this.displayOptions = UnderlayDisplayFlags.ShowUnderlay;
this.clippingBoundary = null;
switch (this.definition.Type)
{
case UnderlayType.DGN:
this.CodeName = DxfObjectCode.UnderlayDgn;
break;
case UnderlayType.DWF:
this.CodeName = DxfObjectCode.UnderlayDwf;
break;
case UnderlayType.PDF:
this.CodeName = DxfObjectCode.UnderlayPdf;
break;
}
}
private void WriteUnderlayDefinition(UnderlayDefinition underlayDef, string ownerHandle)
{
this.chunk.Write(0, underlayDef.CodeName);
this.chunk.Write(5, underlayDef.Handle);
this.chunk.Write(102, "{ACAD_REACTORS");
List<DxfObject> objects = null;
switch (underlayDef.Type)
{
case UnderlayType.DGN:
objects = this.doc.UnderlayDgnDefinitions.References[underlayDef.Name];
break;
case UnderlayType.DWF:
objects = this.doc.UnderlayDwfDefinitions.References[underlayDef.Name];
break;
case UnderlayType.PDF:
objects = this.doc.UnderlayPdfDefinitions.References[underlayDef.Name];
break;
}
if (objects == null) throw new NullReferenceException("Underlay references list cannot be null");
foreach (DxfObject o in objects)
{
Underlay underlay = o as Underlay;
if (underlay != null)
this.chunk.Write(330, underlay.Handle);
}
this.chunk.Write(102, "}");
this.chunk.Write(330, ownerHandle);
this.chunk.Write(100, SubclassMarker.UnderlayDefinition);
this.chunk.Write(1, this.EncodeNonAsciiCharacters(underlayDef.FileName));
switch (underlayDef.Type)
{
case UnderlayType.DGN:
this.chunk.Write(2, this.EncodeNonAsciiCharacters(((UnderlayDgnDefinition)underlayDef).Layout));
break;
case UnderlayType.DWF:
this.chunk.Write(2, string.Empty);
break;
case UnderlayType.PDF:
this.chunk.Write(2, this.EncodeNonAsciiCharacters(((UnderlayPdfDefinition)underlayDef).Page));
break;
}
}