angle_calc

A pure Dart mathematical utility package for calculating geometric angles between vectors and lines using 2D coordinate points.

Because this package contains zero UI or framework dependencies, it is lightweight, lightning-fast, and can be used across Flutter apps, command-line interfaces (CLI), or server-side Dart backends.

Features

• 4-Point Line Angle Calculation: Computes the interior angle formed by two independent line segments (p2 --> p1 and p3 --> p4) in a 2D space.
• Direct Vector Calculations: Directly computes angles between raw geometric vectors using their x and y components.
• Zero Dependencies: Pure Dart implementation with no external package requirements or framework footprints.
• Built-in Safety Guardrails: Automatically handles edge cases like division-by-zero errors (stacked points) and clamps floating-point rounding errors to prevent execution crashes.

Installation

Add this package to your pubspec.yaml file:

dependencies:
  angle_calc:
    path: ../angle_calc