public void Write(Stream stream, DxfDocument document, bool binary)
{
this.doc = document;
this.isBinary = binary;
if (this.doc.DrawingVariables.AcadVer < DxfVersion.AutoCad2000)
throw new NotSupportedException("Only AutoCad2000 and newer dxf versions are supported.");
this.encodedStrings = new Dictionary<string, string>();
// create the default PaperSpace layout in case it does not exist. The ModelSpace layout always exists
if (this.doc.Layouts.Count == 1)
this.doc.Layouts.Add(new Layout("Layout1"));
// create the application registry AcCmTransparency in case it doesn't exists, it is required by the layer and entity transparency
this.doc.ApplicationRegistries.Add(new ApplicationRegistry("AcCmTransparency"));
// create the application registry GradientColor1ACI and GradientColor2ACI in case they don't exists , they are required by the hatch gradient pattern
this.doc.ApplicationRegistries.Add(new ApplicationRegistry("GradientColor1ACI"));
this.doc.ApplicationRegistries.Add(new ApplicationRegistry("GradientColor2ACI"));
// dictionaries
List<DictionaryObject> dictionaries = new List<DictionaryObject>();
// Named dictionary it is always the first to appear in the object section
DictionaryObject namedObjectDictionary = new DictionaryObject(this.doc);
this.doc.NumHandles = namedObjectDictionary.AsignHandle(this.doc.NumHandles);
dictionaries.Add(namedObjectDictionary);
// create the Group dictionary, this dictionary always appear even if there are no groups in the drawing
DictionaryObject groupDictionary = new DictionaryObject(namedObjectDictionary);
this.doc.NumHandles = groupDictionary.AsignHandle(this.doc.NumHandles);
foreach (Group group in this.doc.Groups.Items)
{
groupDictionary.Entries.Add(group.Handle, group.Name);
}
dictionaries.Add(groupDictionary);
namedObjectDictionary.Entries.Add(groupDictionary.Handle, DxfObjectCode.GroupDictionary);
// Layout dictionary
DictionaryObject layoutDictionary = new DictionaryObject(namedObjectDictionary);
this.doc.NumHandles = layoutDictionary.AsignHandle(this.doc.NumHandles);
if (this.doc.Layouts.Count > 0)
{
foreach (Layout layout in this.doc.Layouts.Items)
{
layoutDictionary.Entries.Add(layout.Handle, layout.Name);
}
dictionaries.Add(layoutDictionary);
namedObjectDictionary.Entries.Add(layoutDictionary.Handle, DxfObjectCode.LayoutDictionary);
}
// create the Underlay definitions dictionary
DictionaryObject dgnDefinitionDictionary = new DictionaryObject(namedObjectDictionary);
this.doc.NumHandles = dgnDefinitionDictionary.AsignHandle(this.doc.NumHandles);
if (this.doc.UnderlayDgnDefinitions.Count > 0)
{
foreach (UnderlayDgnDefinition underlayDef in this.doc.UnderlayDgnDefinitions.Items)
{
dgnDefinitionDictionary.Entries.Add(underlayDef.Handle, underlayDef.Name);
dictionaries.Add(dgnDefinitionDictionary);
namedObjectDictionary.Entries.Add(dgnDefinitionDictionary.Handle, DxfObjectCode.UnderlayDgnDefinitionDictionary);
}
}
DictionaryObject dwfDefinitionDictionary = new DictionaryObject(namedObjectDictionary);
this.doc.NumHandles = dwfDefinitionDictionary.AsignHandle(this.doc.NumHandles);
if (this.doc.UnderlayDwfDefinitions.Count > 0)
{
foreach (UnderlayDwfDefinition underlayDef in this.doc.UnderlayDwfDefinitions.Items)
{
dwfDefinitionDictionary.Entries.Add(underlayDef.Handle, underlayDef.Name);
dictionaries.Add(dwfDefinitionDictionary);
namedObjectDictionary.Entries.Add(dwfDefinitionDictionary.Handle, DxfObjectCode.UnderlayDwfDefinitionDictionary);
}
}
DictionaryObject pdfDefinitionDictionary = new DictionaryObject(namedObjectDictionary);
this.doc.NumHandles = pdfDefinitionDictionary.AsignHandle(this.doc.NumHandles);
if (this.doc.UnderlayPdfDefinitions.Count > 0)
{
foreach (UnderlayPdfDefinition underlayDef in this.doc.UnderlayPdfDefinitions.Items)
{
pdfDefinitionDictionary.Entries.Add(underlayDef.Handle, underlayDef.Name);
dictionaries.Add(pdfDefinitionDictionary);
namedObjectDictionary.Entries.Add(pdfDefinitionDictionary.Handle, DxfObjectCode.UnderlayPdfDefinitionDictionary);
}
}
// create the MLine style dictionary
DictionaryObject mLineStyleDictionary = new DictionaryObject(namedObjectDictionary);
this.doc.NumHandles = mLineStyleDictionary.AsignHandle(this.doc.NumHandles);
if (this.doc.MlineStyles.Count > 0)
{
foreach (MLineStyle mLineStyle in this.doc.MlineStyles.Items)
{
mLineStyleDictionary.Entries.Add(mLineStyle.Handle, mLineStyle.Name);
}
dictionaries.Add(mLineStyleDictionary);
namedObjectDictionary.Entries.Add(mLineStyleDictionary.Handle, DxfObjectCode.MLineStyleDictionary);
}
// create the image dictionary
DictionaryObject imageDefDictionary = new DictionaryObject(namedObjectDictionary);
this.doc.NumHandles = imageDefDictionary.AsignHandle(this.doc.NumHandles);
if (this.doc.ImageDefinitions.Count > 0)
{
foreach (ImageDefinition imageDef in this.doc.ImageDefinitions.Items)
{
imageDefDictionary.Entries.Add(imageDef.Handle, imageDef.Name);
}
dictionaries.Add(imageDefDictionary);
namedObjectDictionary.Entries.Add(imageDefDictionary.Handle, DxfObjectCode.ImageDefDictionary);
namedObjectDictionary.Entries.Add(this.doc.RasterVariables.Handle, DxfObjectCode.ImageVarsDictionary);
}
this.doc.DrawingVariables.HandleSeed = this.doc.NumHandles.ToString("X");
this.Open(stream, this.doc.DrawingVariables.AcadVer < DxfVersion.AutoCad2007 ? Encoding.Default : null);
// The comment group, 999, is not used in binary DXF files.
if (!this.isBinary)
{
foreach (string comment in this.doc.Comments)
this.WriteComment(comment);
}
//HEADER SECTION
this.BeginSection(DxfObjectCode.HeaderSection);
foreach (HeaderVariable variable in this.doc.DrawingVariables.Values)
{
this.WriteSystemVariable(variable);
}
// writing a copy of the active dimension style variables in the header section will avoid to be displayed as <style overrides> in AutoCad
DimensionStyle activeDimStyle;
if(this.doc.DimensionStyles.TryGetValue(this.doc.DrawingVariables.DimStyle, out activeDimStyle))
this.WriteActiveDimensionStyleSystemVaribles(activeDimStyle);
this.EndSection();
//CLASSES SECTION
this.BeginSection(DxfObjectCode.ClassesSection);
this.WriteRasterVariablesClass(1);
if (this.doc.ImageDefinitions.Items.Count > 0)
{
this.WriteImageDefClass(this.doc.ImageDefinitions.Count);
this.WriteImageDefRectorClass(this.doc.Images.Count);
this.WriteImageClass(this.doc.Images.Count);
}
this.EndSection();
//TABLES SECTION
this.BeginSection(DxfObjectCode.TablesSection);
//registered application tables
this.BeginTable(this.doc.ApplicationRegistries.CodeName, (short) this.doc.ApplicationRegistries.Count, this.doc.ApplicationRegistries.Handle);
foreach (ApplicationRegistry id in this.doc.ApplicationRegistries.Items)
{
this.WriteApplicationRegistry(id);
}
this.EndTable();
//viewport tables
this.BeginTable(this.doc.VPorts.CodeName, (short) this.doc.VPorts.Count, this.doc.VPorts.Handle);
foreach (VPort vport in this.doc.VPorts)
{
this.WriteVPort(vport);
}
this.EndTable();
//line type tables
//The LTYPE table always precedes the LAYER table. I guess because the layers reference the line types,
//why this same rule is not applied to DIMSTYLE tables is a mystery, since they also reference text styles and block records
this.BeginTable(this.doc.LineTypes.CodeName, (short) this.doc.LineTypes.Count, this.doc.LineTypes.Handle);
foreach (LineType lineType in this.doc.LineTypes.Items)
{
this.WriteLineType(lineType);
}
this.EndTable();
//layer tables
this.BeginTable(this.doc.Layers.CodeName, (short) this.doc.Layers.Count, this.doc.Layers.Handle);
foreach (Layer layer in this.doc.Layers.Items)
{
this.WriteLayer(layer);
}
this.EndTable();
//text style tables
this.BeginTable(this.doc.TextStyles.CodeName, (short) this.doc.TextStyles.Count, this.doc.TextStyles.Handle);
foreach (TextStyle style in this.doc.TextStyles.Items)
{
this.WriteTextStyle(style);
}
this.EndTable();
//dimension style tables
this.BeginTable(this.doc.DimensionStyles.CodeName, (short) this.doc.DimensionStyles.Count, this.doc.DimensionStyles.Handle);
foreach (DimensionStyle style in this.doc.DimensionStyles.Items)
{
this.WriteDimensionStyle(style);
}
this.EndTable();
//view
this.BeginTable(this.doc.Views.CodeName, (short)this.doc.Views.Count, this.doc.Views.Handle);
this.EndTable();
//UCS
this.BeginTable(this.doc.UCSs.CodeName, (short) this.doc.UCSs.Count, this.doc.UCSs.Handle);
foreach (UCS ucs in this.doc.UCSs.Items)
{
this.WriteUCS(ucs);
}
this.EndTable();
//block record table
this.BeginTable(this.doc.Blocks.CodeName, (short) this.doc.Blocks.Count, this.doc.Blocks.Handle);
foreach (Block block in this.doc.Blocks.Items)
{
this.WriteBlockRecord(block.Record);
}
this.EndTable();
this.EndSection(); //End section tables
//BLOCKS SECTION
this.BeginSection(DxfObjectCode.BlocksSection);
foreach (Block block in this.doc.Blocks.Items)
{
Layout layout = null;
if (block.Name.StartsWith(Block.DefaultPaperSpaceName))
{
// the entities of the layouts associated with the blocks "*Paper_Space0", "*Paper_Space1",... are included in the Blocks Section
string index = block.Name.Remove(0, 12);
if (!string.IsNullOrEmpty(index))
{
layout = block.Record.Layout;
}
}
this.WriteBlock(block, layout);
}
this.EndSection(); //End section blocks
//ENTITIES SECTION
this.BeginSection(DxfObjectCode.EntitiesSection);
foreach (Layout layout in this.doc.Layouts)
{
if (!layout.IsPaperSpace)
{
// ModelSpace
List<DxfObject> entities = this.doc.Layouts.GetReferences(layout);
foreach (DxfObject o in entities)
{
this.WriteEntity(o as EntityObject, layout);
}
}
else if (layout.AssociatedBlock.Name.StartsWith(Block.DefaultPaperSpaceName))
{
// only the entities of the layout associated with the block "*Paper_Space" are included in the Entities Section
string index = layout.AssociatedBlock.Name.Remove(0, 12);
if (string.IsNullOrEmpty(index))
{
this.WriteEntity(layout.Viewport, layout);
List<DxfObject> entities = this.doc.Layouts.GetReferences(layout);
foreach (DxfObject o in entities)
{
this.WriteEntity(o as EntityObject, layout);
}
}
}
}
this.EndSection(); //End section entities
//OBJECTS SECTION
this.BeginSection(DxfObjectCode.ObjectsSection);
foreach (DictionaryObject dictionary in dictionaries)
{
this.WriteDictionary(dictionary);
}
foreach (Group group in this.doc.Groups.Items)
{
this.WriteGroup(group, groupDictionary.Handle);
}
foreach (Layout layout in this.doc.Layouts)
{
this.WriteLayout(layout, layoutDictionary.Handle);
}
foreach (MLineStyle style in this.doc.MlineStyles.Items)
{
this.WriteMLineStyle(style, mLineStyleDictionary.Handle);
}
foreach (UnderlayDgnDefinition underlayDef in this.doc.UnderlayDgnDefinitions.Items)
{
this.WriteUnderlayDefinition(underlayDef, dgnDefinitionDictionary.Handle);
}
foreach (UnderlayDwfDefinition underlayDef in this.doc.UnderlayDwfDefinitions.Items)
{
this.WriteUnderlayDefinition(underlayDef, dwfDefinitionDictionary.Handle);
}
foreach (UnderlayPdfDefinition underlayDef in this.doc.UnderlayPdfDefinitions.Items)
{
this.WriteUnderlayDefinition(underlayDef, pdfDefinitionDictionary.Handle);
}
// the raster variables dictionary is only needed when the drawing has image entities
if (this.doc.ImageDefinitions.Count > 0)
{
this.WriteRasterVariables(this.doc.RasterVariables, imageDefDictionary.Handle);
foreach (ImageDefinition imageDef in this.doc.ImageDefinitions.Items)
{
foreach (ImageDefinitionReactor reactor in imageDef.Reactors.Values)
{
this.WriteImageDefReactor(reactor);
}
this.WriteImageDef(imageDef, imageDefDictionary.Handle);
}
}
this.EndSection(); //End section objects
this.Close();
stream.Position = 0;
}
