PathMetric class
Utilities for measuring a Path and extracting sub-paths.
Iterate over the object returned by Path.computeMetrics to obtain
PathMetric objects. Callers that want to randomly access elements or
iterate multiple times should use path.computeMetrics().toList(), since
PathMetrics does not memoize.
Once created, the metrics are only valid for the path as it was specified when Path.computeMetrics was called. If additional contours are added or any contours are updated, the metrics need to be recomputed. Previously created metrics will still refer to a snapshot of the path at the time they were computed, rather than to the actual metrics for the new mutations to the path.
Properties
- contourIndex → int
-
The zero-based index of the contour.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- isClosed → bool
-
Whether the contour is closed.
final
- length → double
-
Return the total length of the current contour.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
extractPath(
double start, double end, {bool startWithMoveTo = true}) → Path - Given a start and end distance, return the intervening segment(s).
-
getTangentForOffset(
double distance) → Tangent? - Computes the position of the current contour at the given offset, and the angle of the path at that point.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited