using System;
using System.Collections.Generic;
using System.Linq;
using Sandbox;

namespace Sunless.Architecture;

// Across is the RIGHT of travel, so positive offset is the same side everywhere.
public readonly struct ArchFrame {
	public Vector3 Position { get; init; }
	public Vector3 Along { get; init; }
	public Vector3 Across { get; init; }
	public Vector3 Up { get; init; }
	public float Distance { get; init; }
	public float WidthScale { get; init; }

	public Vector3 Side( float offset ) => Position + Across * offset;

	public Vector3 Side( float offset, float lift ) => Position + Across * offset + Up * lift;

	public Vector2 Flat => new( Position.x, Position.y );

	public float Yaw => MathF.Atan2( Along.y, Along.x ).RadianToDegree();
}