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Re: overhead projection of lilypond scores

From: Jonathan Kulp
Subject: Re: overhead projection of lilypond scores
Date: Mon, 13 Oct 2008 13:51:04 -0500
User-agent: Thunderbird (X11/20080925)

It's not hard to create a .png file with transparent background from lilypond source, and with this bit of scheme Trevor linked to you can easily make all the objects on the page yellow. If you can merge the transparent-background music image with a blank blue image, then you will have what you want. I imagine it's not hard to do with Gimp if you have some basic skills. (Or maybe paint the wall blue where you want to project it!?! ;-) ). The lily2image script that Patrick Horgan and I wrote is what I use for making png images with transparent backgrounds. It's posted here:

I've attached an image created with the script and using the scheme Trevor mentioned to make everything yellow.


Trevor Daniels wrote:

It's possible, but not trivial.

This snippet shows how to color the foreground of a score:

and this -user mail which I posted shows a very messy way of coloring the background:

No one came up with a better way :(


----- Original Message ----- From: "Gerry Prosser" <address@hidden>
To: <address@hidden>
Sent: Monday, October 13, 2008 6:01 PM
Subject: overhead projection of lilypond scores

when teaching a congregation a new worship song, it would be rather nice to project the melody line onto the screen as well as the words. But black-on-white is a projection disaster. It really needs to be yellow staff/text on a blue background. And probably a thicker text font than times new roman. Is this achievable, please ?

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