private static void SetPoint(DxfCodePair pair, DxfPoint point)
{
switch (pair.Code)
{
case 10:
point.X = pair.DoubleValue;
break;
case 20:
point.Y = pair.DoubleValue;
break;
case 30:
point.Z = pair.DoubleValue;
break;
default:
break;
}
}
public DxfBoundingBox(DxfPoint minimumPoint, DxfVector size)
{
MinimumPoint = minimumPoint;
Size = size;
}
public DxfFile ReadFile(BinaryReader reader)
{
// swallow next two characters
var sub = reader.ReadChar();
Debug.Assert(sub == 0x1A);
var nul = reader.ReadChar();
Debug.Assert(nul == 0x00);
DxfPoint?blockBase = null;
var entities = new List <DxfEntity>();
var stillReading = true;
Action <Func <BinaryReader, DxfEntity> > addEntity = (entityReader) =>
{
var entity = entityReader(reader);
AssignCommonValues(entity);
entities.Add(entity);
};
Func <DxfVertex> getLastVertex = () => entities.LastOrDefault() as DxfVertex;
while (stillReading)
{
var itemType = (DxbItemType)reader.ReadByte();
switch (itemType)
{
case DxbItemType.Line:
addEntity(ReadLine);
break;
case DxbItemType.Point:
addEntity(ReadPoint);
break;
case DxbItemType.Circle:
addEntity(ReadCircle);
break;
case DxbItemType.Arc:
addEntity(ReadArc);
break;
case DxbItemType.Trace:
addEntity(ReadTrace);
break;
case DxbItemType.Solid:
addEntity(ReadSolid);
break;
case DxbItemType.Seqend:
addEntity(ReadSeqend);
break;
case DxbItemType.Polyline:
addEntity(ReadPolyline);
break;
case DxbItemType.Vertex:
addEntity(ReadVertex);
break;
case DxbItemType.Face:
addEntity(ReadFace);
break;
case DxbItemType.ScaleFactor:
_scaleFactor = ReadF(reader);
break;
case DxbItemType.NewLayer:
var sb = new StringBuilder();
for (int b = reader.ReadByte(); b != 0; b = reader.ReadByte())
{
sb.Append((char)b);
}
_layerName = sb.ToString();
break;
case DxbItemType.LineExtension:
addEntity(ReadLineExtension);
break;
case DxbItemType.TraceExtension:
addEntity(ReadTraceExtension);
break;
case DxbItemType.BlockBase:
var x = ReadN(reader);
var y = ReadN(reader);
if (blockBase == null && entities.Count == 0)
{
// only if this is the first item encountered
blockBase = new DxfPoint(x, y, 0.0);
}
break;
case DxbItemType.Bulge:
{
var bulge = ReadU(reader);
var lastVertex = getLastVertex();
if (lastVertex != null)
{
lastVertex.Bulge = bulge;
}
}
break;
case DxbItemType.Width:
{
var startWidth = ReadN(reader);
var endWidth = ReadN(reader);
var lastVertex = getLastVertex();
if (lastVertex != null)
{
lastVertex.StartingWidth = startWidth;
lastVertex.EndingWidth = endWidth;
}
}
break;
case DxbItemType.NumberMode:
_isIntegerMode = ReadW(reader) == 0;
break;
case DxbItemType.NewColor:
_color = DxfColor.FromRawValue((short)ReadW(reader));
break;
case DxbItemType.LineExtension3D:
addEntity(ReadLineExtension3D);
break;
case 0:
stillReading = false;
break;
}
}
var file = new DxfFile();
foreach (var section in file.Sections)
{
section.Clear();
}
// collect the entities (e.g., polylines, etc.)
entities = DxfEntitiesSection.GatherEntities(entities);
if (blockBase != null)
{
// entities are all contained in a block
var block = new DxfBlock();
block.BasePoint = blockBase.GetValueOrDefault();
foreach (var entity in entities)
{
block.Entities.Add(entity);
}
file.Blocks.Add(block);
}
else
{
// just a normal collection of entities
foreach (var entity in entities)
{
file.Entities.Add(entity);
}
}
return(file);
}
public DxfFile ReadFile(BinaryReader reader)
{
// swallow next two characters
var sub = reader.ReadChar();
Debug.Assert(sub == 0x1A);
var nul = reader.ReadChar();
Debug.Assert(nul == 0x00);
DxfPoint blockBase = null;
var entities = new List<DxfEntity>();
var stillReading = true;
Action<Func<BinaryReader, DxfEntity>> addEntity = (entityReader) =>
{
var entity = entityReader(reader);
AssignCommonValues(entity);
entities.Add(entity);
};
Func<DxfVertex> getLastVertex = () => entities.LastOrDefault() as DxfVertex;
while (stillReading)
{
var itemType = (DxbItemType)reader.ReadByte();
switch (itemType)
{
case DxbItemType.Line:
addEntity(ReadLine);
break;
case DxbItemType.Point:
addEntity(ReadPoint);
break;
case DxbItemType.Circle:
addEntity(ReadCircle);
break;
case DxbItemType.Arc:
addEntity(ReadArc);
break;
case DxbItemType.Trace:
addEntity(ReadTrace);
break;
case DxbItemType.Solid:
addEntity(ReadSolid);
break;
case DxbItemType.Seqend:
addEntity(ReadSeqend);
break;
case DxbItemType.Polyline:
addEntity(ReadPolyline);
break;
case DxbItemType.Vertex:
addEntity(ReadVertex);
break;
case DxbItemType.Face:
addEntity(ReadFace);
break;
case DxbItemType.ScaleFactor:
_scaleFactor = ReadF(reader);
break;
case DxbItemType.NewLayer:
var sb = new StringBuilder();
for (int b = reader.ReadByte(); b != 0; b = reader.ReadByte())
sb.Append((char)b);
_layerName = sb.ToString();
break;
case DxbItemType.LineExtension:
addEntity(ReadLineExtension);
break;
case DxbItemType.TraceExtension:
addEntity(ReadTraceExtension);
break;
case DxbItemType.BlockBase:
var x = ReadN(reader);
var y = ReadN(reader);
if (blockBase == null && entities.Count == 0)
{
// only if this is the first item encountered
blockBase = new DxfPoint(x, y, 0.0);
}
break;
case DxbItemType.Bulge:
{
var bulge = ReadU(reader);
var lastVertex = getLastVertex();
if (lastVertex != null)
{
lastVertex.Bulge = bulge;
}
}
break;
case DxbItemType.Width:
{
var startWidth = ReadN(reader);
var endWidth = ReadN(reader);
var lastVertex = getLastVertex();
if (lastVertex != null)
{
lastVertex.StartingWidth = startWidth;
lastVertex.EndingWidth = endWidth;
}
}
break;
case DxbItemType.NumberMode:
_isIntegerMode = ReadW(reader) == 0;
break;
case DxbItemType.NewColor:
_color = DxfColor.FromRawValue((short)ReadW(reader));
break;
case DxbItemType.LineExtension3D:
addEntity(ReadLineExtension3D);
break;
case 0:
stillReading = false;
break;
}
}
var file = new DxfFile();
// collect the entities (e.g., polylines, etc.)
entities = DxfEntitiesSection.GatherEntities(entities);
if (blockBase != null)
{
// entities are all contained in a block
var block = new DxfBlock();
block.BasePoint = blockBase;
block.Entities.AddRange(entities);
file.Blocks.Add(block);
}
else
{
// just a normal collection of entities
file.Entities.AddRange(entities);
}
return file;
}
private DxfTrace ReadTraceExtension(BinaryReader reader)
{
var x3 = ReadN(reader);
var y3 = ReadN(reader);
var x4 = ReadN(reader);
var y4 = ReadN(reader);
var trace = new DxfTrace()
{
FirstCorner = _lastTraceP3,
SecondCorner = _lastTraceP4,
ThirdCorner = new DxfPoint(x3, y3, 0.0),
FourthCorner = new DxfPoint(x4, y4, 0.0)
};
_lastTraceP3 = trace.ThirdCorner;
_lastTraceP4 = trace.FourthCorner;
return trace;
}
private DxfTrace ReadTrace(BinaryReader reader)
{
var x1 = ReadN(reader);
var y1 = ReadN(reader);
var x2 = ReadN(reader);
var y2 = ReadN(reader);
var x3 = ReadN(reader);
var y3 = ReadN(reader);
var x4 = ReadN(reader);
var y4 = ReadN(reader);
var trace = new DxfTrace()
{
FirstCorner = new DxfPoint(x1, y1, 0.0),
SecondCorner = new DxfPoint(x2, y2, 0.0),
ThirdCorner = new DxfPoint(x3, y3, 0.0),
FourthCorner = new DxfPoint(x4, y4, 0.0)
};
_lastTraceP3 = trace.ThirdCorner;
_lastTraceP4 = trace.FourthCorner;
return trace;
}
private DxfLine ReadLineExtension3D(BinaryReader reader)
{
var x = ReadN(reader);
var y = ReadN(reader);
var z = ReadN(reader);
var line = new DxfLine(_lastLinePoint, new DxfPoint(x, y, z));
_lastLinePoint = line.P2;
return line;
}
public DxfXDataWorldDirection(DxfPoint value)
{
Value = value;
}
private DxfLine ReadLine(BinaryReader reader)
{
var fromX = ReadN(reader);
var fromY = ReadN(reader);
var fromZ = ReadN(reader);
var toX = ReadN(reader);
var toY = ReadN(reader);
var toZ = ReadN(reader);
var from = new DxfPoint(fromX, fromY, fromZ);
var to = new DxfPoint(toX, toY, toZ);
_lastLinePoint = to;
return new DxfLine(from, to);
}
public DxfXDataWorldDirection(DxfPoint value)
{
Value = value;
}
public DxfXDataWorldSpaceDisplacement(DxfPoint value)
{
Value = value;
}
public DxfXDataWorldSpacePosition(DxfPoint value)
{
Value = value;
}
public DxfXData3Reals(DxfPoint value)
{
Value = value;
}
public DxfXDataWorldSpacePosition(DxfPoint value)
{
Value = value;
}
public DxfXDataWorldSpaceDisplacement(DxfPoint value)
{
Value = value;
}
public static DxfBoundingBox FromMinMax(DxfPoint minimum, DxfPoint maximum)
{
var size = maximum - minimum;
return(new DxfBoundingBox(minimum, size));
}
private DxfLine ReadLineExtension(BinaryReader reader)
{
var x = ReadN(reader);
var y = ReadN(reader);
var to = new DxfPoint(x, y, 0.0);
var line = new DxfLine(_lastLinePoint, to);
_lastLinePoint = to;
return line;
}
public DxfXData3Reals(DxfPoint value)
{
Value = value;
}
