CADSoftTools

Whenever I use the Delphi Ellipse function to draw directly to a DXF canvas, I find that if the parameters are not simmetrical ie a perfect circle, the shape is not drawn. How do I draw an oval shape by using Delphi functions such as Ellipse?

I have line-drawings on an Image.canvas and I would like to know if I can convert them to DXF format by using DXFExportVCL.