Svg.radial.parameter: def of gralha-svg-render@0.1.0.1
Import: import gralha-svg-render@0.1.0.1/svg.bend as Svg
Lines 2209-2219 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=2209&end_line=2219

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

def radial.parameter(+p: Point, +start: Point, +end: Point, +r: F32, +fr: F32) -> Parameter:
  +q = point.sub(p, start)
  +d = point.sub(end, start)
  +dr = (r - fr : F32)
  +a = (point.dot(d, d) - dr * dr : F32)
  +b = (0.0 - 2.0 * (point.dot(q, d) + fr * dr) : F32)
  +c = (point.dot(q, q) - fr * fr : F32)
  U.branch(Parameter, F32.is_lt(r, 0.0000001), _ => Parameter{1.0, True{}},
    _ => U.branch(Parameter, F32.is_lt(F32.abs(a), 0.0000001),
      _ => Parameter{(0.0 - c / b : F32), F32.is_gt(F32.abs(b), 0.0000001)},
      _ => radial.roots(a, b, c, fr, dr)))

Uses (15):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.abs
  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_lt
  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.sub
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=Parameter
  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-svg-render@0.1.0.1/svg.bend&name=point.dot
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=point.sub
  https://jend.leeeet.dev/definition.txt?path=gralha-svg-render@0.1.0.1/svg.bend&name=radial.roots
  https://jend.leeeet.dev/definition.txt?path=gralha-text-scan@0.1.0.1/scan.bend&name=branch