Feature proposition: free-hand painting/vector drawing tool

[LGuidar]

As a contemporary music composer and researcher in composition, I am proposing (and requesting) the addition of a free-hand painting tool to MuseScore — something akin to a vector drawing tool that would allow users to create graphic elements directly on the score. While MuseScore already provides a robust set of features for music notation, one critical component is still missing: the ability to add free-form visual elements directly to the staff.
In the realm of contemporary and experimental music, visual elements are often as crucial as the musical notation itself for conveying specific interpretative instructions. Composers frequently need to include custom symbols, hand-drawn markings, or unique shapes that cannot be easily represented using traditional notation alone. While it’s possible to create these elements in external programs like Illustrator or Photoshop and then import them as images into MuseScore, this workflow is cumbersome and inefficient. What if we could integrate this functionality directly into MuseScore?

The main features I envision for this tool would include:

• Free-hand drawing: Allowing users to draw directly on the score with a pen-like tool, creating curves, lines, or other shapes. This could be similar to a simple drawing or painting tool, where the user can freely trace shapes or add annotations.
• Adjustable stroke width and style: Providing control over the thickness, color, and style of the drawn lines (solid, dashed, etc.).
• Exporting drawings: The ability to export the drawn elements as SVG (or another format), and optionally, to embed them into the score for printing or further editing.
• Retaining note editing: It's crucial that this drawing tool doesn't interfere with the music notation itself, meaning the drawn elements should sit on a separate layer or be “overlays” that don’t affect the underlying musical content.
• User Interface (UI): A simple and intuitive UI for selecting drawing tools, adjusting line thickness, and controlling the overall drawing mode, maybe like the good ol’ Paint :)

As composers of experimental and contemporary music, we often need to add specific visual representations that are a fundamental part of the score’s interpretation. The lack of a drawing tool in MuseScore limits our ability to fully integrate these elements directly in the software. By allowing free-hand drawing and graphic annotations, MuseScore could attract a whole new community of composers working in experimental genres who would find this functionality essential.
Having this feature embedded in MuseScore would not only simplify the workflow but would also help build a community of contemporary and experimental composers who could fully embrace MuseScore as their primary notation software, without needing to rely on external programs for artistic elements.

[Yukin2]

I agree. Free vector drawing tool is important for contemporary music composers. The software I know of that includes this feature are Finale and LilyPond. For instance, there's a shape designer in finale which allows users to create lines, boxes and curves etc. If MuseScore add this feature, I would hope that it allows user to draw directly on score rather than drawing in a separate window and then insert them into the score. This would be much more convenient.

[Fourniture]

I like this idea (in fact I suggested a basic line drawing tool #25802, but the developers don't seem to like it) as long as the basic UI for Musescore doesn't change.
That is, I don't want this feature to run away with the design and have a toolbar full of different brushes on the main note input screen. If it's tidily tucked away but still easy to find, this would be great.
(But my humble opinion: please no more pop-ups. The dynamics and drum ones are quite enough.)