fn adjust_for_intersection(
        &mut self,
        intersection: LineOrPoint<C::Scalar>,
    ) -> SplitSegments<C::Scalar> {
        use SplitSegments::*;

        // We only support splitting a line segment.
        let (p, q) = match self.geom {
            Point(_) => panic!("attempt to adjust a point segment"),
            Line(p, q) => (p, q),
        };
        match intersection {
            // Handle point intersection
            Point(r) => {
                debug_assert!(
                    p <= r,
                    "intersection point was not ordered within the line: {p:?} <= {r:?} <= {q:?}",
                    p = p
                );
                if p == r || q == r {
                    // If the intersection is at the end point, the
                    // segment doesn't need to be split.
                    Unchanged { overlap: false }
                }  else {
                    // Otherwise, split it. Mutate `self` to be the
                    // first part, and return the second part.
                    self.geom = Line(p, r);
                    self.first_segment = false;
                    SplitOnce {
                        overlap: None,
                        right: if q > r { Line(r, q) } else { Line(q, r) },
                    }
                }
            }
            // Handle overlapping segments
            Line(r1, r2) => {
                debug_assert!(
                    p <= r1 && r2 <= q,
                    "overlapping segment was not ordered within the line!"
                );
                if p == r1 {
                    if r2 == q {
                        // The whole segment overlaps.
                        Unchanged { overlap: true }
                    } else {
                        self.geom = Line(p, r2);
                        self.first_segment = false;
                        SplitOnce {
                            overlap: Some(false),
                            right: Line(r2, q),
                        }
                    }
                } else if r2 == q {
                    self.geom = Line(p, r1);
                    self.first_segment = false;
                    SplitOnce {
                        overlap: Some(true),
                        right: Line(r1, q),
                    }
                } else {
                    self.geom = Line(p, r1);
                    self.first_segment = false;
                    SplitTwice { right: Line(r2, q) }
                }
            }
        }
    }
/// Split a line segment into pieces at points of intersection.
///
/// The initial segment is mutated in place such that ordering
/// among `ActiveSegment`s does not change. The extra geometries
/// are returned.
Split a line segment into pieces at points of intersection.
The initial segment is mutated in place such that ordering
among `ActiveSegment`s does not change. The extra geometries
are returned.
Split a line segment into pieces at points of intersection . The initial segment is mutated in place such that ordering among ` ActiveSegment ` s does not change . The extra geometries are returned .
fn adjust_for_intersection(
        &mut self,
        intersection: LineOrPoint<C::Scalar>,
    ) -> SplitSegments<C::Scalar> {
        use SplitSegments::*;
        // We only support splitting a line segment.
        let (p, q) = match self.geom {
            Point(_) => panic!("attempt to adjust a point segment"),
            Line(p, q) => (p, q),
        };
        match intersection {
            // Handle point intersection
            Point(r) => {
                debug_assert!(
                    p <= r,
                    "intersection point was not ordered within the line: {p:?} <= {r:?} <= {q:?}",
                    p = p
                );
                if p == r || q == r {
                    // If the intersection is at the end point, the
                    // segment doesn't need to be split.
                    Unchanged { overlap: false }
                }  else {
                    // Otherwise, split it. Mutate `self` to be the
                    // first part, and return the second part.
                    self.geom = Line(p, r);
                    self.first_segment = false;
                    SplitOnce {
                        overlap: None,
                        right: if q > r { Line(r, q) } else { Line(q, r) },
                    }
                }
            }
            // Handle overlapping segments
            Line(r1, r2) => {
                debug_assert!(
                    p <= r1 && r2 <= q,
                    "overlapping segment was not ordered within the line!"
                );
                if p == r1 {
                    if r2 == q {
                        // The whole segment overlaps.
                        Unchanged { overlap: true }
                    } else {
                        self.geom = Line(p, r2);
                        self.first_segment = false;
                        SplitOnce {
                            overlap: Some(false),
                            right: Line(r2, q),
                        }
                    }
                } else if r2 == q {
                    self.geom = Line(p, r1);
                    self.first_segment = false;
                    SplitOnce {
                        overlap: Some(true),
                        right: Line(r1, q),
                    }
                } else {
                    self.geom = Line(p, r1);
                    self.first_segment = false;
                    SplitTwice { right: Line(r2, q) }
                }
            }
        }
    }
fn adjust_for_intersection ( & mut self , intersection : LineOrPoint < C :: Scalar > , ) -> SplitSegments < C :: Scalar > { use SplitSegments :: * ; // We only support splitting a line segment. let ( p , q ) = match self . geom { Point ( _ ) => panic ! ( " " ) , Line ( p , q ) => ( p , q ) , } ; match intersection { // Handle point intersection Point ( r ) => { debug_assert ! ( p r " " p p ) ; if p == r || q == r { // If the intersection is at the end point, the // segment doesn't need to be split. Unchanged { overlap : false } } else { // Otherwise, split it. Mutate `self` to be the // first part, and return the second part. self . geom = Line ( p , r ) ; self . first_segment = false ; SplitOnce { overlap : None , right : if q > r { Line ( r , q ) } else { Line ( q , r ) } , } } } // Handle overlapping segments Line ( r1 , r2 ) => { debug_assert ! ( p r1 r2 q " " ) ; if p == r1 { if r2 == q { // The whole segment overlaps. Unchanged { overlap : true } } else { self . geom = Line ( p , r2 ) ; self . first_segment = false ; SplitOnce { overlap : Some ( false ) , right : Line ( r2 , q ) , } } } else if r2 == q { self . geom = Line ( p , r1 ) ; self . first_segment = false ; SplitOnce { overlap : Some ( true ) , right : Line ( r1 , q ) , } } else { self . geom = Line ( p , r1 ) ; self . first_segment = false ; SplitTwice { right : Line ( r2 , q ) } } } } }
Split a line segment into pieces at points of intersection.
Split a line segment into pieces at points of intersection .
&mut self
intersection
LineOrPoint<C::Scalar>
&mut self
intersection
LineOrPoint<C::Scalar>