/// <summary>
/// Casts a ray against mesh
/// </summary>
/// <param name="ray">Ray to be cast</param>
/// <param name="maxDistance">Maximum distance to trace ray</param>
/// <param name="hitInfo">Will contain hit information if true is returned</param>
/// <returns>Distance along the ray the hit was found</returns>
public bool Raycast(Ray ray, float maxDistance, ref RaycastHit hitInfo)
{
#if DEBUG
Interlocked.Increment(ref Counters.RaysCast);
#endif
var localRayDirection = ray.Direction.RotatedBy(_invRotation);
var localRayOrigin = (ray.Origin - Position).RotatedBy(_invRotation);
var localRay = new Ray(localRayOrigin, localRayDirection);
var hit = new RayTriangleHit {Distance = maxDistance};
Triangle closestTriangle = null;
bool hitFound = _octree.Raycast(localRay, ref hit, ref closestTriangle);
if (!hitFound) return false;
Vector3 normal = _normalSampler.Sample(closestTriangle, hit.U, hit.V).RotatedBy(_rotation);
hitInfo = new RaycastHit(hit, closestTriangle, this, ray, normal);
return true;
}
public bool Raycast(Ray ray, float maxDistance, ref RaycastHit hitInfo)
{
float closestHitDistance = maxDistance;
bool hitFound = false;
foreach (Mesh mesh in _meshes)
{
#if DEBUG
Interlocked.Increment(ref Counters.BoundingBoxHits);
#endif
RaycastHit meshHit = null;
bool hit = mesh.Raycast(ray, closestHitDistance, ref meshHit);
if (hit)
{
hitInfo = meshHit;
closestHitDistance = meshHit.Distance;
hitFound = true;
}
}
return hitFound;
}
public Vector3 SampleColor(Scene scene, RaycastHit raycastHit, int maxRecursiveRaycasts)
{
return Shader.Shade(scene, raycastHit, maxRecursiveRaycasts);
}