Svg.edge.cross: def of gralha-svg-render@0.1.0.1
Import: import gralha-svg-render@0.1.0.1/svg.bend as Svg
Lines 526-532 of gralha-svg-render@0.1.0.1/svg.bend: https://jend.leeeet.dev/read.txt?path=gralha-svg-render@0.1.0.1/svg.bend&start_line=526&end_line=532

import Base
import gralha-text-scan@0.1.0.1/scan.bend as U

# Geometry queries use half-open crossings, supporting both SVG fill rules.
def edge.cross(+edge: Edge, +p: Point) -> F32:
  Edge{x1, y1, x2, y2, stroked, closed} = edge
  Point{x, y} = p
  U.branch(F32, (F32.is_le(y1, y) && F32.is_gt(y2, y)) || (F32.is_le(y2, y) && F32.is_gt(y1, y)),
    _ => U.choose(F32, F32.is_gt((x1 + (y - y1) * (x2 - x1) / (y2 - y1) : F32), x),
      U.choose(F32, F32.is_gt(y2, y1), 1.0, F32.neg(1.0)), 0.0), _ => 0.0)

Uses (14):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.div
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.is_gt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.is_le
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.neg
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.sub
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=Edge
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=Point
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=branch
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=choose