mirror of
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
99 lines
2.9 KiB
C#
99 lines
2.9 KiB
C#
using Editor.MeshEditor;
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using PolygonMesh = Editor.MeshEditor.PrimitiveBuilder.PolygonMesh;
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namespace EditorTests;
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[TestClass]
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public class PolygonMeshTest
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{
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/// <summary>
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/// New vertices should append to the list and return their index.
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/// </summary>
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[TestMethod]
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public void AddVertexAppendsAndReturnsIndex()
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{
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var mesh = new PolygonMesh();
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Assert.AreEqual( 0, mesh.AddVertex( new Vector3( 0, 0, 0 ) ) );
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Assert.AreEqual( 1, mesh.AddVertex( new Vector3( 10, 0, 0 ) ) );
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Assert.AreEqual( 2, mesh.Vertices.Count );
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}
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/// <summary>
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/// Adding a position that's already in the mesh - exactly or within tolerance -
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/// should return the existing index instead of creating a duplicate vertex.
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/// </summary>
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[TestMethod]
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public void AddVertexDeduplicatesNearbyPositions()
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{
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var mesh = new PolygonMesh();
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var index = mesh.AddVertex( new Vector3( 10, 20, 30 ) );
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Assert.AreEqual( index, mesh.AddVertex( new Vector3( 10, 20, 30 ) ) );
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Assert.AreEqual( index, mesh.AddVertex( new Vector3( 10.00005f, 20, 30 ) ) );
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Assert.AreEqual( 1, mesh.Vertices.Count );
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Assert.AreNotEqual( index, mesh.AddVertex( new Vector3( 10.01f, 20, 30 ) ) );
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Assert.AreEqual( 2, mesh.Vertices.Count );
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}
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/// <summary>
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/// A face needs at least three indices - anything less is rejected, anything valid
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/// keeps the winding order it was given.
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/// </summary>
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[TestMethod]
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public void AddFaceByIndexRequiresThreeIndices()
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{
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var mesh = new PolygonMesh();
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mesh.AddVertex( new Vector3( 0, 0, 0 ) );
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mesh.AddVertex( new Vector3( 10, 0, 0 ) );
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mesh.AddVertex( new Vector3( 10, 10, 0 ) );
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Assert.IsNull( mesh.AddFace( 0, 1 ) );
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Assert.AreEqual( 0, mesh.Faces.Count );
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var face = mesh.AddFace( 2, 0, 1 );
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Assert.IsNotNull( face );
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Assert.AreEqual( 1, mesh.Faces.Count );
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CollectionAssert.AreEqual( new[] { 2, 0, 1 }, face.Indices.ToArray() );
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}
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/// <summary>
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/// Building faces from positions should reuse vertices shared between faces - two
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/// triangles sharing an edge make four vertices, not six.
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/// </summary>
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[TestMethod]
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public void AddFaceByPositionSharesVertices()
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{
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var mesh = new PolygonMesh();
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var a = new Vector3( 0, 0, 0 );
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var b = new Vector3( 10, 0, 0 );
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var c = new Vector3( 10, 10, 0 );
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var d = new Vector3( 0, 10, 0 );
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var first = mesh.AddFace( a, b, c );
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var second = mesh.AddFace( a, c, d );
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Assert.AreEqual( 4, mesh.Vertices.Count );
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Assert.AreEqual( 2, mesh.Faces.Count );
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CollectionAssert.AreEqual( new[] { 0, 1, 2 }, first.Indices.ToArray() );
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CollectionAssert.AreEqual( new[] { 0, 2, 3 }, second.Indices.ToArray() );
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}
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/// <summary>
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/// Rejecting a degenerate position-based face shouldn't leave its vertices behind.
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/// </summary>
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[TestMethod]
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public void AddFaceByPositionRequiresThreePositions()
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{
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var mesh = new PolygonMesh();
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Assert.IsNull( mesh.AddFace( new Vector3( 0, 0, 0 ), new Vector3( 10, 0, 0 ) ) );
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Assert.AreEqual( 0, mesh.Faces.Count );
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Assert.AreEqual( 0, mesh.Vertices.Count );
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}
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}
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