private void method_16()
{
MemoryStream sectionStream = new MemoryStream();
Class889 byteStream = Class889.Create((Stream)sectionStream, this.dxfVersion_0, this.encoding_0);
foreach (Class504 section in this.list_0)
{
if (section.DataSize != 0UL)
{
this.method_17(section, byteStream);
}
}
if (this.dxfVersion_0 == DxfVersion.Dxf21)
{
this.method_17(new Class504()
{
HashCode = 0UL,
MaxDecompressedPageSize = 63488UL,
Encrypted = 0UL,
Encoding = 4UL
}, byteStream);
}
Class442 page = new Class442();
ulong pageSize = Class996.smethod_2((ulong)sectionStream.Length);
byte[] pageData;
this.method_20(page, sectionStream, this.class954_0.SectionsMapCrcSeed, pageSize, out pageData);
Class442 class442 = (Class442)page.Clone();
this.method_23((Class441)page, pageData, 0, pageData.Length);
this.method_23((Class441)class442, pageData, 0, pageData.Length);
this.class954_0.SectionsMapDataRepeatCount = page.DataRepeatCount;
this.class954_0.SectionsMapSizeCompressed = page.CompressedSize;
this.class954_0.SectionsMapSizeDecompressed = page.DecompressedSize;
this.class954_0.SectionsMapCrcCompressed = page.CompressedCrc;
this.class954_0.SectionsMapCrcDecompressed = page.DecompressedCrc;
this.class954_0.SectionsMapId = (ulong)page.Id;
this.class954_0.SectionsMap2Id = (ulong)class442.Id;
}
private ulong method_19(int pageCount)
{
return(Class996.smethod_2((ulong)(pageCount + 5) * 16UL));
}