Syntriax.Engine/Engine.Physics2D/Primitives/AABB.cs

39 lines
1.3 KiB
C#

using System.Collections.Generic;
using Syntriax.Engine.Core;
namespace Syntriax.Engine.Physics2D.Primitives;
public record AABB(Vector2D LowerBoundary, Vector2D UpperBoundary)
{
public static AABB FromVectors(IEnumerable<Vector2D> vectors)
{
int counter = 0;
Vector2D lowerBoundary = new(float.MaxValue, float.MaxValue);
Vector2D upperBoundary = new(float.MinValue, float.MinValue);
foreach (Vector2D vector in vectors)
{
lowerBoundary = Vector2D.Min(lowerBoundary, vector);
upperBoundary = Vector2D.Max(upperBoundary, vector);
counter++;
}
if (counter < 2)
throw new System.ArgumentException($"Parameter {nameof(vectors)} must have at least 2 items.");
return new(lowerBoundary, upperBoundary);
}
public static bool ApproximatelyEquals(AABB left, AABB right)
=> left.LowerBoundary.ApproximatelyEquals(right.LowerBoundary) && left.UpperBoundary.ApproximatelyEquals(right.UpperBoundary);
}
public static class AABBExtensions
{
public static AABB ToAABB(this IEnumerable<Vector2D> vectors) => AABB.FromVectors(vectors);
public static bool ApproximatelyEquals(this AABB left, AABB right) => AABB.ApproximatelyEquals(left, right);
}