Merge pull request #3145 from adambelis/feat/width-smooth-profile

Width profiles run smooth between their points

crates/engine/src/tests/outlinestroke.rs

@@ -73,14 +73,13 @@ fn arrowheads_are_part_of_the_outline() {
     assert_eq!(path_of(&n).subpaths.len(), 1, "line and head are one shape");
 }
 
-/// Outline Stroke of a Lens-profile line covers 7/12 of the full-width rectangle.
+/// Outline Stroke of a Lens-profile line covers 2/3 of the full-width rectangle.
 #[test]
-fn a_lens_profile_outlines_to_seven_twelfths_of_the_rectangle() {
+fn a_lens_profile_outlines_to_two_thirds_of_the_rectangle() {
     let mut s = session();
     line(&mut s, json!({"weight": 10, "profile": "lens"}));
     let n = outline(&mut s);
-    // Each half of the lens swells on a cubic, flat at the middle (#5714).
-    assert!(near(area(&n), 7.0 / 12.0 * 10.0 * 100.0, 2.0), "{}", area(&n));
+    assert!(near(area(&n), 2.0 / 3.0 * 10.0 * 100.0, 2.0), "{}", area(&n));
 }
 
 #[test]

crates/engine/src/tests/widthpoints.rs

@@ -221,9 +221,9 @@ fn new_width_point_adjust_adjoining_uses_sampled_widths() {
         let (mut s, id) = line_session();
         let original = vec![(0.0, 9.0, 9.0), (0.25, 1.0, 0.0), (0.75, 3.0, 0.0), (1.0, 7.0, 7.0)];
         s.execute("stroke.widthProfile.set", &json!({"ids": [id.0], "points": original})).unwrap();
-        // At t=0.5 the old left side is where the profile's curve is there (#5714) and the right
-        // side is 0pt. Indexed editing of that sampled point is the existing convention: scale the
-        // nonzero side, add from zero.
+        // At t=0.5 the old left side is where the profile's curve is there and the right side is
+        // 0pt. Indexed editing of that sampled point is the existing convention: scale the nonzero
+        // side, add from zero.
         let sampled = vectorcraft_doc::WidthProfile { points: original }.at(0.5).0;
         let index = if indexed { Some(set(&mut s, json!({"id": id.0, "t": 0.5, "left": sampled * 5.0, "right": 0}))) } else { None };
         set(&mut s, json!({"id": id.0, "index": index, "t": 0.5, "left": 20, "right": 5, "adjustAdjoining": true}));