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Let single-line paths be resized along their length (#1245)

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MarekSpodBiedry
2026-10-18 23:35:56 +02:00
parent ecd7e5d063
commit 6fc7172628
1 changed files with 14 additions and 5 deletions
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crates/engine/src/cmd/object.rs
+14 -5
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@@ -1201,11 +1201,10 @@ fn transform_resize(s: &mut Session, p: &Value) -> Result<Value> {
let to = rect_param(p, "to").ok_or_else(|| bad("transform.resize", "missing to"))?;
let scale_content = bool_or(p, "content", false);
let distribute = bool_or(p, "distribute", false);
if from.width().abs() < 1e-9 || from.height().abs() < 1e-9 {
return Err(bad("transform.resize", "degenerate source rect"));
}
let sx = to.width() / from.width();
let sy = to.height() / from.height();
// A flat source (a horizontal or vertical line) has no size to scale on its flat axis: that axis only moves.
let ratio = |new: f64, old: f64| if old.abs() < 1e-9 { 1.0 } else { new / old };
let sx = ratio(to.width(), from.width());
let sy = ratio(to.height(), from.height());
let sx = if sx.abs() < 1e-3 { 1e-3f64.copysign(sx) } else { sx };
let sy = if sy.abs() < 1e-3 { 1e-3f64.copysign(sy) } else { sy };
let m = Affine::translate((to.x0, to.y0)) * Affine::scale_non_uniform(sx, sy) * Affine::translate((-from.x0, -from.y0));
@@ -4189,6 +4188,16 @@ mod fitting_tests {
assert!(String::from_utf8_lossy(&bytes).contains("/Subtype/Image"));
}
#[test]
fn a_flat_line_resizes_along_its_length() {
let mut s = Session::new();
s.execute("file.new", &json!({})).unwrap();
let id = s.execute("line.create", &json!({"a": [100, 100], "b": [200, 100]})).unwrap()["id"].as_u64().unwrap();
s.execute("transform.resize", &json!({"ids": [id], "from": [100, 100, 200, 100], "to": [100, 100, 300, 100]})).unwrap();
let r = s.doc().unwrap().doc.item(ItemId(id)).unwrap().bounds();
assert!((r.x0 - 100.0).abs() < 1e-9 && (r.x1 - 300.0).abs() < 1e-9 && (r.y0 - 100.0).abs() < 1e-9 && r.height().abs() < 1e-9, "{r:?}");
}
#[test]
fn live_distribute_spreads_objects_without_resizing() {
let mut s = Session::new();