function linePoint()

in TestApplications/Web/js/lib/components/d3-3.4.13/src/geo/bounds.js [47:91]

• 45 lines of code
• 21 McCabe index (conditional complexity)

  function linePoint(λ, φ) {
    var p = d3_geo_cartesian([λ * d3_radians, φ * d3_radians]);
    if (p0) {
      var normal = d3_geo_cartesianCross(p0, p),
          equatorial = [normal[1], -normal[0], 0],
          inflection = d3_geo_cartesianCross(equatorial, normal);
      d3_geo_cartesianNormalize(inflection);
      inflection = d3_geo_spherical(inflection);
      var dλ = λ - λ_,
          s = dλ > 0 ? 1 : -1,
          λi = inflection[0] * d3_degrees * s,
          antimeridian = abs(dλ) > 180;
      if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
        var φi = inflection[1] * d3_degrees;
        if (φi > φ1) φ1 = φi;
      } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
        var φi = -inflection[1] * d3_degrees;
        if (φi < φ0) φ0 = φi;
      } else {
        if (φ < φ0) φ0 = φ;
        if (φ > φ1) φ1 = φ;
      }
      if (antimeridian) {
        if (λ < λ_) {
          if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
        } else {
          if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
        }
      } else {
        if (λ1 >= λ0) {
          if (λ < λ0) λ0 = λ;
          if (λ > λ1) λ1 = λ;
        } else {
          if (λ > λ_) {
            if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
          } else {
            if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
          }
        }
      }
    } else {
      point(λ, φ);
    }
    p0 = p, λ_ = λ;
  }