Select: pick a solid hatch inside its fill, islands left out, not its bounding rectangle (follow-up to #747) (#763)

Co-authored-by: Brandon Thomas <echelon@gmail.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

crates/render/src/hatch.rs

@@ -90,7 +90,7 @@ fn dedup_polygons(loops: &mut Vec<Vec<Vec2>>) {
 /// detection style (DXF group 75), filled with odd parity: 0 normal keeps every loop (islands
 /// within islands alternate), 1 outer keeps the outermost loops and their first islands, 2
 /// ignore keeps only the outermost loops. Nesting depth = how many other loops enclose a loop.
-pub(crate) fn fill_loops(h: &Hatch, tol: f64) -> Vec<Vec<Vec2>> {
+pub fn fill_loops(h: &Hatch, tol: f64) -> Vec<Vec<Vec2>> {
     let mut loops: Vec<Vec<Vec2>> = h.loops.iter().map(|l| Polyline { vertices: l.vertices.clone(), closed: true }.tessellate(tol)).collect();
     dedup_polygons(&mut loops);
     let max_depth = match h.style {

crates/render/src/lib.rs

@@ -31,7 +31,7 @@ use pen::Pen;
 
 pub use dim::{ArrowGeom, Arrowhead, DimGeometry, DimText, LineRole, arrowhead, dimension_geometry, dimension_geometry_with, format_linear_value};
 pub use fill::triangulate_evenodd;
-pub use hatch::pattern_swatch;
+pub use hatch::{fill_loops as hatch_fill_loops, pattern_swatch};
 pub use paper::{PAPER_SIZES, PaperSize, Sheet, paper_size, sheet};
 pub use tolerance::{gdt_points, tolerance_in};