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https://github.com/Facepunch/sbox-public.git
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d95169d8fa
* Move all unit tests to Engine/Tests * Fix Margin.EdgeSubtract * Fix Capsule.Contains * EnvironmentVariables.Remove if it's null * Fixed ray trace never returning startedsolid * Fix HistoryList.Navigate on empty list * Fix GameObject.WorldPosition accepting NaNs * Fix flex: initial expanding to the wrong grow/shrink * Translation.TryConvert shouldn't throw on invalid enum strings * Skip sound file tests on machines with no audio device
107 lines
3.2 KiB
C#
107 lines
3.2 KiB
C#
namespace MathTests;
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[TestClass]
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public class LineTest
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{
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/// <summary>
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/// The basic accessors should reflect the two construction points.
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/// </summary>
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[TestMethod]
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public void ConstructAndAccessors()
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{
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var line = new Line( new Vector3( 0, 0, 0 ), new Vector3( 100, 0, 0 ) );
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Assert.AreEqual( new Vector3( 0, 0, 0 ), line.Start );
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Assert.AreEqual( new Vector3( 100, 0, 0 ), line.End );
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Assert.AreEqual( new Vector3( 100, 0, 0 ), line.Delta );
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Assert.AreEqual( new Vector3( 50, 0, 0 ), line.Center );
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}
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/// <summary>
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/// The origin/direction/length constructor should produce the same line as
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/// the two-point constructor.
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/// </summary>
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[TestMethod]
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public void ConstructFromDirection()
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{
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var line = new Line( Vector3.Zero, new Vector3( 1, 0, 0 ), 100 );
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Assert.AreEqual( new Vector3( 100, 0, 0 ), line.End );
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}
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/// <summary>
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/// ClosestPoint should project onto the segment and clamp to the
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/// end points when the query lies beyond them.
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/// </summary>
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[TestMethod]
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public void ClosestPointClampsToSegment()
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{
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var line = new Line( new Vector3( 0, 0, 0 ), new Vector3( 100, 0, 0 ) );
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Assert.AreEqual( new Vector3( 50, 0, 0 ), line.ClosestPoint( new Vector3( 50, 10, 0 ) ) );
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Assert.AreEqual( new Vector3( 0, 0, 0 ), line.ClosestPoint( new Vector3( -50, 10, 0 ) ) );
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Assert.AreEqual( new Vector3( 100, 0, 0 ), line.ClosestPoint( new Vector3( 150, 10, 0 ) ) );
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}
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/// <summary>
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/// Distance should be the distance to the closest point on the segment,
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/// and SqrDistance should be its square.
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/// </summary>
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[TestMethod]
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public void DistanceMatchesClosestPoint()
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{
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var line = new Line( new Vector3( 0, 0, 0 ), new Vector3( 100, 0, 0 ) );
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var query = new Vector3( 50, 10, 0 );
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Assert.AreEqual( 10f, line.Distance( query ), 0.001f );
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Assert.AreEqual( 100f, line.SqrDistance( query ), 0.001f );
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var dist = line.Distance( query, out var closest );
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Assert.AreEqual( 10f, dist, 0.001f );
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Assert.AreEqual( new Vector3( 50, 0, 0 ), closest );
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}
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/// <summary>
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/// A ray crossing through the line within the given radius should trace true,
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/// a distant ray should trace false.
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/// </summary>
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[TestMethod]
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public void Trace()
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{
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var line = new Line( new Vector3( 0, 0, 0 ), new Vector3( 100, 0, 0 ) );
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var crossing = new Ray( new Vector3( 50, -10, 0 ), new Vector3( 0, 1, 0 ) );
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Assert.IsTrue( line.Trace( crossing, 1f ) );
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var missing = new Ray( new Vector3( 50, -10, 50 ), new Vector3( 0, 1, 0 ) );
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Assert.IsFalse( line.Trace( missing, 1f ) );
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}
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/// <summary>
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/// ClosestPoint against a ray should find the mutually closest points
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/// on the segment and on the ray.
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/// </summary>
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[TestMethod]
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public void ClosestPointToRay()
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{
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var line = new Line( new Vector3( 0, 0, 0 ), new Vector3( 100, 0, 0 ) );
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var ray = new Ray( new Vector3( 50, -10, 5 ), new Vector3( 0, 1, 0 ) );
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Assert.IsTrue( line.ClosestPoint( ray, out var onLine, out var onRay ) );
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Assert.AreEqual( new Vector3( 50, 0, 0 ), onLine );
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Assert.AreEqual( new Vector3( 50, 0, 5 ), onRay );
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}
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/// <summary>
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/// Lines with the same end points should be equal.
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/// </summary>
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[TestMethod]
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public void Equality()
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{
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var a = new Line( Vector3.Zero, Vector3.One );
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var b = new Line( Vector3.Zero, Vector3.One );
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Assert.IsTrue( a.Equals( b ) );
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}
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}
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