public void CorrectRayOnCircle()
{
var testPartPath = TestContext.CurrentContext.ResolveProjectPath(new string[] { "..", "..", "..", "examples", "RayTracerTest" });
var testPart = Path.Combine(testPartPath, "circle_100x100_centered.stl");
Mesh simpleMesh = StlProcessing.Load(testPart, CancellationToken.None);
var bvhCollection = MeshToBVH.Convert(simpleMesh);
var scene = new Scene();
scene.shapes.Add(bvhCollection);
RayTracer raytracer = new RayTracer()
{
AntiAliasing = AntiAliasing.None,
MultiThreaded = false,
};
int samples = 40;
var advance = MathHelper.Tau / samples;
TestSingleAngle(scene, raytracer, advance, 15);
for (int i = 0; i < samples; i++)
{
TestSingleAngle(scene, raytracer, advance, i);
}
}
private static void TestSingleAngle(Scene scene, RayTracer raytracer, double advance, int i)
{
var sampleXY = new Vector2(48, 0);
sampleXY.Rotate(advance * i);
Vector3 rayOrigin = new Vector3(sampleXY, 10);
Ray ray = new Ray(rayOrigin, -Vector3.UnitZ);
IntersectInfo primaryInfo = raytracer.TracePrimaryRay(ray, scene);
Assert.IsTrue(primaryInfo.HitType == IntersectionType.FrontFace, "always have a hit");
}