In Cetz is very easy to rotate by a fixed angle. rotate(45deg) for example. But if I want to calculate the angle by two points that are indicated as anchors (string type)?
Ho can I convert the anchor type to a vector, calculate atan for example and then rotate of that amount?
Thanks a lot to everybody!!
#[CeTZ] How to rotate of a calculated angle?
alpine ember
serene fable
This is not that easy right now, but doable:
#import "@preview/cetz:0.1.1"
#cetz.canvas({
import cetz.draw: *
line((0,0), (2,2), name: "l")
get-ctx(ctx => {
let (x,y,..) = cetz.coordinate.resolve(ctx, "l.start")
let (x2,y2,..) = cetz.coordinate.resolve(ctx, "l.end")
let a = calc.atan2(y2 - y, x2 - x)
rotate(a)
rect((1,0), (2,1), fill: blue)
})
})
You can use cetz.coordinate.resolve with get-ctx (or group(ctx => {...}) to resolve an anchor to a vector.
alpine ember
Wonderful! Thanks a lot, it was very difficult to get it without your help.
eternal falcon
the resolve function and such dont seem to be part of the manual so it is hard to find
serene fable
Yes, that is true. I'll add them.