Function segmentLength

Euclidean length of a segment.

MetricScalar!T segmentLength(T)(
  Segment2!T segment
) pure nothrow @nogc @safe
if (isGeoScalar!T);

Uses the same metric computation policy as point-to-point distance.

In particular:

- integer coordinate differences are obtained without signed overflow; - int, long and float geometry compute in double; - real geometry computes in real; - hypot is used indirectly through distance().

Floating-point non-finite coordinates follow the same arithmetic semantics as distance().

This is a metric computation, not an exact topological predicate.

No allocation is performed.

Complexity

O(1) time and O(1) auxiliary space.

Example

Example computing the Euclidean length of a segment. 

import geo;

const segment =
    Segment2!double(
        Point2!double(0.0, 0.0),
        Point2!double(3.0, 4.0)
    );

assert(segmentLength(segment) == 5.0);