Re: LibreCAD VBA (Visual Basic for Applications) sample
### Example: Simple Script to Draw a Rectangle
Below is a basic example of a script that draws a rectangle in LibreCAD:
```javascript
// Begin a new drawing
var doc = this.getDocument();
var di = this.getDocumentInterface();
// Set the initial position for the rectangle
var pt1 = new RVector(0, 0); // Bottom-left corner
var pt2 = new RVector(100, 0); // Bottom-right corner
var pt3 = new RVector(100, 50); // Top-right corner
var pt4 = new RVector(0, 50); // Top-left corner
// Draw the four lines of the rectangle
di.addLine(pt1, pt2);
di.addLine(pt2, pt3);
di.addLine(pt3, pt4);
di.addLine(pt4, pt1);
// Refresh the view to show the rectangle
di.repaintViews();
```
### Running the Script:
1. Save the script as a `.js` file in LibreCAD’s script directory.
2. Open LibreCAD and navigate to `Tool` > `Scripts` > `Run Script`.
3. Select your script, and LibreCAD will execute the commands, drawing the rectangle on the canvas.
### Further Customization
If you have more complex requirements, such as creating shapes or patterns based on mathematical formulas or automating drawing templates, you can explore the QtScript API and leverage functions for entity creation, layer management, and other drawing commands.
For more advanced automation, consider integrating Python or C++ with LibreCAD through its plugin system, as that allows for more robust control and interaction with the LibreCAD environment.
