forked from MoonsideGames/MoonTools.Bonk
54 lines
1.4 KiB
C#
54 lines
1.4 KiB
C#
using System;
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using System.Collections.Generic;
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using Microsoft.Xna.Framework;
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using MoonTools.Core.Structs;
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namespace MoonTools.Core.Bonk
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{
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public struct Line : IShape2D, IEquatable<IShape2D>
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{
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private Position2D v0;
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private Position2D v1;
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private IEnumerable<Position2D> vertices
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{
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get
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{
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yield return v0;
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yield return v0;
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}
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}
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public Line(Position2D start, Position2D end)
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{
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v0 = start;
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v1 = end;
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}
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public Vector2 Support(Vector2 direction, Transform2D transform)
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{
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var TransformedStart = Vector2.Transform(v0, transform.TransformMatrix);
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var TransformedEnd = Vector2.Transform(v1, transform.TransformMatrix);
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return Vector2.Dot(TransformedStart, direction) > Vector2.Dot(TransformedEnd, direction) ?
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TransformedStart :
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TransformedEnd;
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}
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public AABB AABB(Transform2D Transform2D)
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{
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return Bonk.AABB.FromTransformedVertices(vertices, Transform2D);
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}
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public bool Equals(IShape2D other)
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{
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if (other is Line)
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{
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var otherLine = (Line)other;
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return v0.ToVector2() == otherLine.v0.ToVector2() && v1.ToVector2() == otherLine.v1.ToVector2();
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}
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return false;
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}
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}
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}
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