Improved version of equation-desc.typ in examples

[fakeGenuis]

Hi,
I really enjoy using this package, especially the pinit-highlight-equation-from function. However, I was wondering if it could be improved to:

1. Allow placement relative to the left and right margins.
2. Adjust the inset when placing a formula (or something with higher than normal text) in the body text.

Here’s my attempt to implement it:

// Example adapted from: @Matt https://discord.com/channels/1054443721975922748/1088371919725793360/1166508915572351067

#import "@preview/pinit:0.2.2": *

#set page(width: 700pt, height: auto, margin: 30pt)
#set text(size: 20pt)
#set math.equation(numbering: "(1)")

#let pinit-highlight-equation-from(height: 2em, pos: (right, bottom), dy: 0.1em, fill: rgb(0, 180, 255), highlight-pins, point-pin, body) = {
  pinit-highlight(..highlight-pins, dy: -0.9em, fill: rgb(..fill.components().slice(0, -1), 40))
  context {
    let pos_x = pos.at(0)
    let pos_y = pos.at(1)
    let insett = measure(body).height/2 + dy
    pinit-point-from(
      fill: fill, pin-dx: 0em, offset-dx: 0em,
      body-dx: if pos_x == right { 0em } else { -measure(body).width - 2*insett },
      body-dy: -measure(body).height - 2*insett + (if pos_y == bottom {-0.06em} else {0.06em}),
      pin-dy: if pos_y == bottom { 0.5em } else { -0.9em },
      offset-dy: if pos_y == bottom { 0.8em + height } else { -0.6em - height },
      point-pin,
      rect(
        inset: insett,
        stroke: (bottom: 0.12em + fill),
        {
          set text(fill: fill)
          body
        }
      )
    )}
}

Equation written out directly (for comparison):

$ (q_T^* p_T)/p_E p_E^* >= (c + q_T^* p_T^*)(1+r^*)^(2N) $

Laid out with pinit:

#v(3.5em)

$ (#pin(1)q_T^* p_T#pin(2))/(#pin(3)p_E#pin(4))#pin(5)p_E^*#pin(6) >= (c + q_T^* p_T^*)(1+r^*)^(2N) $

#v(5em)

#pinit-highlight-equation-from((1, 2, 3, 4), (3, 4), height: 3.5em, pos: (left, bottom), fill: rgb(0, 180, 255))[
  quantity of Terran goods
]

#pinit-highlight-equation-from((1, 2, 3, 4), (1, 2), dy: 0.3em, height: 2.5em, pos: (left, top), fill: rgb(0, 180, 255))[
  $(q_T^* p_T)/p_E p_E^*$
]

#pinit-highlight-equation-from((5, 6), (5, 6), height: 2.5em, pos: (right, top), fill: rgb(150, 90, 170))[
  price of Terran goods, on Trantor
]

Paragraph after the equation.

I’m still new to Typst. Even though I use measure to get the height of the body, the formula often gets too close to the stroke line when the body has more height. As a result, I have to manually adjust dy. Any suggestions to handle this more effectively?