Use of Layers in rmn/rmdoc files

[John van Kemenade]

Hi,

Is there support of the 'layers' in rmn/rmdoc files? I'd like to have shapes on different layers.

If not, is this a future feature. Maybe the Opacity can be used for this.
Eg Opacity 1.0 => Layer 1, Opacity [0.9 - 1.0) => Layer 2 etc

John

[A. Vontobel]

Drawj2d does not support drawing on different layers.

I guess it would actually require too much work to implement (for a feature I do not use personally).
May I ask what is your use case?

[John van Kemenade]

My use case is multiple
1. I use layers on the reMarkable to selectively hide/show my markings - used to memorize and practice exercises while keeping at the same time a sort of 'version history'. When Drawj2d supports multiple layers, I can create in the same document both the exercise AND the solution.
2. I use layers on the remarkable to differentiate between how "sure" I am of my markings: draft - final - thoughts etc. When Drawj2d supports multiple layers I can create a layer with shapes (the upper layer) that I can select and copy/paste, and a layer with a descriptive text (the bottom layer) that is visible but not selectable.

I've had a look at the sourcecode and admit my java-knowledge is limited and my understanding of the inner workings of Drawj2d is non-existent). My first idea of a possible approach would be to look in ReMarkablePage.java and modify
* the "export" function and loop over multiple layers
* the "writelayer" function and only write those lines that match a criteria indicating these lines belong to this layer

What that criteria is and how to tag the line with that criteria is another thing. This is where I thought of the opacity. This is already an attribute and maybe it can be re-used to indicate the layer.

However, my use cases are just nice to haves. No worries.