Tutorial 3 exercice 2 : cannot get scalar vector multiplication to work about penrose

[samestep]

I'm unable to repro this; could you clarify exactly what code you're using? Note carefully that the sample solution code for Exercise 2 refers to earlier code from the tutorial itself:

/**************YOUR CODE - START********************/
forall Vector u; VectorSpace U
where In(u,U) {
 /* ...concatenated, this is the same as Tutorial Part 1 */
}

[Doublonmousse]

Ok, I put my code on a repo

https://github.com/Doublonmousse/penrose-debug-tutorial-2

Going over it again, it seems that the issue is not what I thought it was initially : I can get it to work if the scalar value is not given a random value but is fixed at the start.

However, with all constraints enabled and the scalar value given a random value, the layout optimisation algorithm seems to fail (or gives potentially incorrect results just like the screenshot I put before for reference).

I can get it to work with the first two constraints

    -- constraints : given enough constraints, impossible to use ? for the scalar value (?)
    ensure contains(U.Background,u.shape)
    ensure contains(U.Background,u.text) 

but not with more (if the scalar value is set randomly).

There is no problem on the scalar/vector multiplication side, I thought that this was the issue as everything was still working if I added something to the vector instead of multiplying.
And I get the same results (without errors if the scalar value is set) regardless of the method used for the scalar/vector multiplication.

[samestep]

Thanks for the update! You're right, even when I use the example solution code, sometimes the blue vector extends outside of the box and the labels end up in the wrong place; but sometimes it lays out fine. Gonna ask on Discord about this to see if anyone has any ideas.