Header

Variables

Variables contains settings associated with the drawing, defined in the HEADER section.

All possible variables

INFO

By default these variables are set automatically:

$ACADVER The AutoCAD drawing database version number: AC1021 = AutoCAD 2007.
$HANDSEED Next available handle.
$INSUNITS Default drawing units for AutoCAD DesignCenter blocks: 0 = Unitless.
$VIEWCTR XY center of current view on screen.
$CLAYER Save the current layer name.
$LASTSAVEDBY Sets to the package name.

Adding variables

Each variable is specified by a 9 group code giving the variable's name, followed by groups that supply the variable's value:

txt

9
$NAME // The name of the variable.
  10  // First group code
20    // The value assocoated
  20  // Second group code
20    // The value assocoated
// And so on...

// These values are random.

Javascript code :

import { DxfWriter } from "@tarikjabiri/dxf";
const dxf = new DxfWriter();
dxf.setVariable("$ATTMODE", { 70: 2 });
// $ATTMODE is the name of the variable
// 70 is the group code
// 2 is the value to be set.
dxf.setVariable("$PLIMMAX", {
  10: 20,
  20: 30,
}); // This variable accept tow group codes and tow values

INFO

The object passed as values is key value paired, the key is the group code and value associated with it.
If you try to add a variable already added, its values will be updated.

Setting Units

To set units use the convenient method setUnits():

import { DxfWriter, Units } from '@tarikjabiri/dxf';

const dxf = new DxfWriter();
dxf.setUnits(Units.Meters);

Header ​

Variables ​

Adding variables ​

Setting Units ​

Variables

Adding variables

Setting Units