Further Notes on Conversion (DXF/DWG Files)

In DXF files, hatching is contained in BLOCK assignments.

The scale of a drawing cannot be derived from a DXF file. All coordinates are normally saved in absolute values that are only adapted when a drawing is plotted.

Scale entries can however be made before a DXF file is read.

Set the value 1 for the unknown DXF scale. A graphically correct construction is created. The scale can then be correspondingly adapted when you process the construction. In this case, you can subsequently specify a global modification for character height.

If HEADER and BLOCK sections are not included in the DXF file, conversion can only be correctly carried out if the file does not contain any BLOCK assignments. You can check to see whether a HEADER section is present. The first four lines of a DXF file should be:

0

Section

2

HEADER

Any errors that may occur are recorded in the log file \TEMP\ACADHCAD.LOG. In earlier versions, the name of the file was ACADHCAD.ERR or ACADHCAK.FEL.

Currently the following variables and DXF elements can be processed by HiCAD:

DXF elements that do not have the corresponding or similar equivalent in HiCAD, can not always be represented.

DXF/DWG files can contain PROXY elements in which a large part of the geometry can be located. These elements are generated e.g. by AutoCAD add-on programs and can only be represented exactly with these.

However, a proxy graphic is usually entered in the DWG/DXF file; this is fundamentally different from the usual DXF syntax.

It consists of 254 characters long lines, in which the information is coded hexadecimally.

These proxy elements are transferred as secondary parts with the name PROXY when they are read into HiCAD.

The transfer of PROXY entity elements can be set on the Others tab of the import settings dialogue.