line_helper library

Functions

adaptivePathToPoints(Path path, double maxTolerance) → List<Offset>

Converts a path into a list of points with adaptive spacing.

calculateCentralAngle(GlobeCoordinates start, GlobeCoordinates end) → double

Calculates the central angle between two points on a sphere.

calculateCurvature(Tangent currentTangent, PathMetric pathMetric, double distance, double step) → double

Calculates the curvature at a given distance along the path.

drawAnimatedLine(Canvas canvas, AnimatedPointConnection connection, double radius, double rotationY, double rotationZ, double animationValue, Size size, Offset? hoverPoint) → Map?

Draws an animated line on the canvas connecting two points on a sphere.

findCurveSphereIntersection(Path path, Offset center, double radius, double maxTolerance, bool firstIntersection) → Offset?

Finds the intersection point between a curved path and a sphere.

getDrawPercentage(Path path, Offset intersection, {bool first = true}) → double

Calculates the draw percentage of the path up to the given intersection point.

getPathLengthsUpToIntersection(Path path, Offset intersection) → List<double>

Calculates the lengths of the path up to the given intersection point.

refineIntersection(Offset start, Offset end, Offset center, double radius) → Offset

Refines the intersection point between a line segment and a sphere.