/// <summary>
/// Reflection method to read entities.
/// </summary>
/// <remarks>
/// Is functional but not very reliable so it should disapear in the future and have a method for each entity.
/// </remarks>
/// <param name="template"></param>
/// <returns></returns>
private Entity readEntity(DxfEntityTemplate template)
{
Entity entity = null;
//Get the current entity
switch (template.EntityName)
{
//TODO: Check the SubclassMarker
case DxfFileToken.EntityArc:
entity = new Arc(template);
break;
case DxfFileToken.EntityCircle:
entity = new Circle(template);
break;
case DxfFileToken.EntityPolyline:
entity = new PolyLine(template);
break;
case DxfFileToken.EntityText:
entity = new Text(template);
break;
case DxfFileToken.EntityVertex:
entity = new Vertex(template);
break;
case DxfFileToken.EntityAttributeDefinition:
Debug.Fail("Check the property VerticalJustification and see the assigned code, should be 74");
entity = new AttributeDefinition(template);
break;
default:
//Debug.Fail($"Unhandeled entity {template.EntityName}.");
break;
}
//Jump the SubclassMarker
m_reader.ReadNext();
Dictionary <DxfCode, object> map = entity?.GetCadObjectMap() ?? new Dictionary <DxfCode, object>();
while (m_reader.LastValueAsString != DxfFileToken.EndSection)
{
if (m_reader.LastDxfCode == DxfCode.Start)
{
//Check if the entity has children in it
Dictionary <string, PropertyInfo> subEntity = entity?.GetSubEntitiesMap() ?? new Dictionary <string, PropertyInfo>();
if (!subEntity.ContainsKey(m_reader.LastValueAsString))
{
//Is a separated entity
break;
}
//Read the sequence
while (m_reader.LastValueAsString != DxfFileToken.EndSequence)
{
Entity child = this.readEntity();
PropertyInfo prop = subEntity[child.ObjectName];
if (prop.GetValue(entity, null) is ICollection <Entity> pvalue)
{
pvalue.Add(child);
}
else
{
//Will be used for something??
Debug.Fail("");
prop.SetValue(entity, child);
}
}
//Read the end of sequence
m_reader.ReadNext();
while (m_reader.LastDxfCode != DxfCode.Start)
{
m_reader.ReadNext();
}
//The end of the sequence is the end of the entity
break;
}
else if (map.ContainsKey(m_reader.LastDxfCode))
{
//Set the value
map[m_reader.LastDxfCode] = m_reader.LastValue;
}
//Get the next line
m_reader.ReadNext();
}
//Build the entity based on the map
entity?.Build(map);
return(entity);
}
