Displaced note heads for multiple voices

[AurisStd]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

If I am making two voices, and those voices happen to be the same note but have different rhythms, they seem to overlap each other even though this is generally not the standard in sheet music, and instead they would be placed directly next to each other.

Expected Behavior

Playing two voices that are the same pitch but different rhythms should make the notes be adjacent to each other, and not overlapping. The first beat in the image demonstrates this. AlphaTab overlaps the two notes.

Steps To Reproduce

\track "Piano"
\staff{score} \tuning piano \instrument acousticgrandpiano
\voice
c4 d4 e4 f4 | c4 d4 e4 f4
\voice
c4.1 | c3.4 d3 e3 f3

This alphatex demonstrates the overlapping of the two notes.
If they are both the same rhythm, I believe then it is okay to overlap the two, since the stems will be in different directions, but in this case, one blocks out the other.

Link to jsFiddle, CodePen, Project

No response

Version and Environment

Checked on android and web versions

Platform

Android (Native)

Anything else?

No response

[AurisStd]

Actually, I think the rule is dependent on the note head. If they are both filled, then it is usually fine to overlap them, but if one of them is a half note or whole note, then they should be adjacent.

[Danielku15]

While it's not a "bug" it is a valid report. It falls under the umbrella of "collision detection" and trying to displace elements when it happens. alphaTab has only very limited capabilities of displacing elements in case of collisions.

Some rules around this:

1. if the note duration is <= a quarter, the note-head can be reused.
2. If there is only half a half shift there is also a displacement
3. The displace should be handled like a beat which also has multiple displaced notes.