rvt / dxfrwtest Goto Github PK

Hi , rvt
When I export DXF with line linetypes and layers and open it with autoCAD, I encounter the following prompts: ENTITIES region is not allowed to be non-entity LTYPE. Reading LAYER (starting from line 1618) encounter the following errors:Class AcDbSymbolTableRecord requires class delimiters.
Can you add examples of DXFrw writing lineType and layers and blocks

I wrote the following extended data according to the requirements of DRW_Variant format

1001, "SAG_CURVE"
1002, "{"
1003, "0"
1000, "woaini"
1000, "520"
1000, "This is a circle."
1071, 0
1071,1
1040,37.5
1040,43.6
1002, "}"
Before the bool dxfRW:: write Entity (DRW_Entity * ent) function finally returns, add the following code:
if (!ent->extData.empty()){
writeExtData(ent->extData);
}
In the inheritance implementation class of DRW_Interface QinWriter, adding the corresponding code to write the extended data above, the graphics can be drawn, but check the DXF file, there is no section at the beginning of 1001, which senior programer knows what's going on, can you give me some advice?

I am a C++ beginner, I don't know what is the meaning of ': dxfW(dxfW) ' in ExampleWriter::ExampleWriter(dxfRW &dxfW) : dxfW(dxfW) {
}
How to understand it?

Since the writePolyline function lacks the vertex subclass mark 100 "AcDb3dPolylineVertex", autoCAD opened the generated DXF with an error: the file is incomplete. I added writer->writeString(100,"AcDb3dPolylineVertex") under line 817 of the libdxfrw.cpp file, and then opened it with autoCAD without an error.