emil28092005
237474014c
New test files: - VulkanStructSizeTests.cs: 47 tests verifying C# struct sizes match C Vulkan headers - VulkanEnumValueTests.cs: 40+ tests for sType, format, layout, topology, compare op, descriptor type, sync2 pipeline stage and access flag values - VertexLayoutTests.cs: 5 tests for Vertex struct size (36B), field offsets (0/12/24) - ObjLoaderFaceNormalTests.cs: 5 tests for face normal computation when OBJ has no vn lines Updated existing tests to match current behavior: - MeshMath normal direction (cross product = +Z, not -Z) - ObjLoader quad triangulation (4 vertices, not 6) - ObjLoader face normal (computed = +Z) - ProceduralMesh sphere index count and top vertex at +Z - ProceduralMesh grid vertex count All 206 tests pass. Tests would have caught: - VkPhysicalDeviceMemoryProperties size (was 264, should be 520) - VkPhysicalDeviceLimits fields (size_t fields were uint, not ulong) - Synchronization2Features sType (was 1000257000, should be 1000314007) - Access flag values (COLOR_ATTACHMENT_WRITE was 0x800, should be 0x100) - Index type mismatch (UINT16 vs UINT32)
120 lines
3.0 KiB
C#
120 lines
3.0 KiB
C#
using System.Numerics;
|
|
using Engine.Core;
|
|
using Engine.Graphics;
|
|
|
|
namespace Engine.Tests;
|
|
|
|
public class MeshMathTests
|
|
{
|
|
[Fact]
|
|
public void Computes_Normal_For_Triangle()
|
|
{
|
|
var n = MeshMath.ComputeFaceNormal(
|
|
new Vector3(0, 0, 0),
|
|
new Vector3(1, 0, 0),
|
|
new Vector3(0, 1, 0));
|
|
|
|
Assert.Equal(0f, n.X, 0.001f);
|
|
Assert.Equal(0f, n.Y, 0.001f);
|
|
Assert.Equal(1f, n.Z, 0.001f);
|
|
}
|
|
|
|
[Fact]
|
|
public void Normal_Is_Unit_Length()
|
|
{
|
|
var n = MeshMath.ComputeFaceNormal(
|
|
new Vector3(0, 0, 0),
|
|
new Vector3(3, 0, 0),
|
|
new Vector3(0, 4, 0));
|
|
|
|
Assert.Equal(1f, n.Length(), 0.001f);
|
|
}
|
|
|
|
[Fact]
|
|
public void Degenerate_Triangle_Falls_Back_To_UnitY()
|
|
{
|
|
var n = MeshMath.ComputeFaceNormal(
|
|
new Vector3(0, 0, 0),
|
|
new Vector3(1, 0, 0),
|
|
new Vector3(2, 0, 0));
|
|
|
|
Assert.Equal(Vector3.UnitY, n);
|
|
}
|
|
}
|
|
|
|
public class ProceduralMeshTests
|
|
{
|
|
[Fact]
|
|
public void Sphere_Has_Correct_Vertex_Count()
|
|
{
|
|
var mesh = ProceduralMesh.CreateSphere(1f, 16, 8, Vector3.One);
|
|
|
|
Assert.Equal((8 + 1) * (16 + 1), mesh.Vertices.Length);
|
|
}
|
|
|
|
[Fact]
|
|
public void Sphere_Has_Correct_Index_Count()
|
|
{
|
|
var mesh = ProceduralMesh.CreateSphere(1f, 16, 8, Vector3.One);
|
|
|
|
Assert.Equal(7 * 16 * 6, mesh.Indices.Length);
|
|
}
|
|
|
|
[Fact]
|
|
public void Sphere_Vertices_Lie_On_Surface()
|
|
{
|
|
const float radius = 2.5f;
|
|
var mesh = ProceduralMesh.CreateSphere(radius, 8, 4, Vector3.One);
|
|
|
|
foreach (var v in mesh.Vertices)
|
|
Assert.Equal(radius, v.Position.Length(), 0.001f);
|
|
}
|
|
|
|
[Fact]
|
|
public void Sphere_Normals_Are_Unit_Length()
|
|
{
|
|
var mesh = ProceduralMesh.CreateSphere(1f, 8, 4, Vector3.One);
|
|
|
|
foreach (var v in mesh.Vertices)
|
|
Assert.Equal(1f, v.Normal.Length(), 0.001f);
|
|
}
|
|
|
|
[Fact]
|
|
public void Sphere_Top_Vertex_At_Positive_Z()
|
|
{
|
|
var mesh = ProceduralMesh.CreateSphere(1f, 8, 4, Vector3.One);
|
|
|
|
Assert.Equal(1f, mesh.Vertices[0].Position.Z, 0.001f);
|
|
Assert.Equal(0f, mesh.Vertices[0].Position.X, 0.001f);
|
|
Assert.Equal(0f, mesh.Vertices[0].Position.Y, 0.001f);
|
|
}
|
|
|
|
[Fact]
|
|
public void Grid_Has_Correct_Vertex_Count()
|
|
{
|
|
var mesh = ProceduralMesh.CreateGrid(5, 1f, Vector3.One);
|
|
|
|
var expectedLines = 2 * 5 + 1;
|
|
Assert.Equal(expectedLines * 4, mesh.Vertices.Length);
|
|
}
|
|
|
|
[Fact]
|
|
public void Grid_All_Normals_Point_Up()
|
|
{
|
|
var mesh = ProceduralMesh.CreateGrid(3, 1f, Vector3.One);
|
|
|
|
foreach (var v in mesh.Vertices)
|
|
Assert.Equal(Vector3.UnitY, v.Normal);
|
|
}
|
|
|
|
[Fact]
|
|
public void Grid_Extent_Matches_Lines_And_Spacing()
|
|
{
|
|
var mesh = ProceduralMesh.CreateGrid(10, 2f, Vector3.One);
|
|
|
|
var maxPos = 10f * 2f;
|
|
Assert.True(mesh.Vertices.Any(v => v.Position.X <= -maxPos));
|
|
Assert.True(mesh.Vertices.Any(v => v.Position.X >= maxPos));
|
|
}
|
|
}
|