Changing the pen size/color programmatically

[personalizedrefrigerator]

Here's an example that shows how to get the second pen tool and change its size and color.

import {
	Editor, PenTool, Color4
} from 'js-draw';
import 'js-draw/styles';
const editor = new Editor(document.body, {
	wheelEventsEnabled: 'only-if-focused',
});

// The toolbar can be added either before or after changing the tool.
editor.addToolbar();

// Get all tools of type PenTool (we could also do this with an EraserTool).
const penTools = editor.toolController.getMatchingTools(PenTool);

// Get the second pen tool (somewhat fragile -- js-draw might change
// the default toolbar configuration in a future major release).
const secondPen = penTools[1];

secondPen.setThickness(200);
secondPen.setColor(Color4.red);

I'm in the process of adding a version of this to the documentation (and extending the API to better allow changing the number of pens).

Edit: Now documented here.