Home >> Files & Folders >> File Formats Writing AutoCad DXF files By Claude Gagnon A simple class for writing AutoCad DXF files    VC5 SP2, Win9x, NT4   Posted 25 Jan 2000 Articles by this author Send to a friend Printer friendly version Lounge New Articles Sign in Forums Contribute

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This article demonstrate how to write an ASCII DXF files. A DXF file is a file composed of sections and associated values. They are read by AutoCad and then converted to a drawing.

I have developped a class CDxf to write a DXF file from an application. Then the user must use AutoCad to interpret the DXF file.

I have included only a small portion of what can be do with DXF files. All the details are contained in the following document from the AutoDesk web site : http://www.autodesk.com/techpubs/autocad/dxf/.

// Here is the code to write a DXF file that will draw a circle in AutoCad.
// 
void CDxf::Circle ()
{
	// 1000 diameter circle
	// Creation of an output stream objet in text mode.
	// ios::app : append
	ofstream FichierDxf ("TestDxf.dxf", ios::app);

	// Draw the circle
	FichierDxf << 0          << endl;
	FichierDxf << "CIRCLE"   << endl;
	FichierDxf << 8          << endl;       // Group code for layer name
	FichierDxf << 0          << endl;       // Layer number
	FichierDxf << 10         << endl;       // Center point of circle
	FichierDxf << 0.0        << endl;       // X in OCS coordinates
	FichierDxf << 20         << endl;
	FichierDxf << 0.0        << endl;       // Y in OCS coordinates
	FichierDxf << 30         << endl;
	FichierDxf << 0.0        << endl;       // Z in OCS coordinates
	FichierDxf << 40         << endl;       // radius of circle
	FichierDxf << 500.0      << endl;       

	FichierDxf.close();
}

By being able to write a DXF file, I can integrate into my applications a way to share information with AutoCad. Obviously there is a lot more that can be added to this class.

Hint: For improved responsiveness, use Internet Explorer 4 (or above) with Javascript enabled, choose 'Use DHTML' from the View dropdown and hit 'Set Options'.   Keyword Filter   View Normal Preview    Per page 10 25 50   Messages since 12:00 1 Jan 99 Last Day Last Week Last Month Last 6 Months Last Year All New thread Messages 1 to 4 of 4 (Total: 4) First Prev Next Last Subject  Author  Date    Do you have also LightWave and DirectX? Lev  6:08 8 Feb 00    Re: Do you have also LightWave and DirectX? Claude Gagnon  16:40 11 Feb 00    Where is source code ? Zuccaro Gianfranco  3:11 26 Jan 00    Re: Where is source code ? Chris Maunder  16:28 26 Jan 00  Last Visit: 12:00 Friday 1st January, 1999 First Prev Next Last

Home >> Files & Folders >> File Formats last updated 25 Jan 2000 Article content copyright Claude Gagnon, 2000 everything else © CodeProject, 1999-2001.