private BindingVector3 Raycast(FRay ray, WCamera camera)
{
BindingVector3 selected_vec = null;
List <BindingVector3> vecs_to_raycast = GetCameraVectorProperties();
List <Tuple <float, BindingVector3> > results = new List <Tuple <float, BindingVector3> >();
foreach (BindingVector3 bv in vecs_to_raycast)
{
FPlane plane = new FPlane(ray.Direction.Normalized(), bv.BackingVector);
float dist = float.MaxValue;
plane.RayIntersectsPlane(ray, out dist);
Vector3 plane_intersect_point = camera.Transform.Position + (plane.Normal * dist);
float distance_from_billboard_center = (plane_intersect_point - bv.BackingVector).Length;
if (distance_from_billboard_center < 50.0f)
{
float point_dist = (camera.Transform.Position - bv.BackingVector).Length;
results.Add(new Tuple <float, BindingVector3>(point_dist, bv));
}
}
results.Sort(delegate(Tuple <float, BindingVector3> x, Tuple <float, BindingVector3> y)
{
return(x.Item1.CompareTo(y.Item1));
});
if (results.Count > 0)
{
selected_vec = results[0].Item2;
}
return(selected_vec);
}
public static Vector3 GetIntersectionRayPlane(FPlane plane, FRay ray)
{
Vector3 result;
Vector3 planeNormal = new Vector3(plane.X, plane.Y, plane.Z);
float timeParam = (plane.D + (Vector3.Dot(planeNormal, ray.StartPosition))) / Vector3.Dot(planeNormal, ray.Direction);
result = ray.StartPosition + ray.Direction * timeParam;
return(result);
}
public static float GetDistanceFromPlaneToPoint(FPlane plane, Vector3 point)
{
Vector3 planeNormal = (Vector3)plane;
float projectPointOnNormal = Vector3.Dot(planeNormal, point);
float distance = projectPointOnNormal - plane.D;
distance /= planeNormal.Length;
return(distance);
}
public readonly int iLightmassIndex; // Index to the lightmass settings
public FBspSurf(FAssetArchive Ar)
{
Material = new FPackageIndex(Ar);
PolyFlags = Ar.Read <uint>();
pBase = Ar.Read <int>();
vNormal = Ar.Read <int>();
vTextureU = Ar.Read <int>();
vTextureV = Ar.Read <int>();
iBrushPoly = Ar.Read <int>();
Actor = new FPackageIndex(Ar);
Plane = Ar.Read <FPlane>();
LightMapScale = Ar.Read <float>();
iLightmassIndex = Ar.Read <int>();
}
private Vector3 GetTopBottomIntersectionPoint(Vector3 A, FPlane cbPlane, FPlane incidentPlane)
{
Vector3 result;
Vector3 acNormal = new Vector3(incidentPlane.X, incidentPlane.Y, incidentPlane.Z);
Vector3 acRayDirection = Vector3.Cross(acNormal, RightVector);
Vector3 cbNormal = new Vector3(cbPlane.X, cbPlane.Y, cbPlane.Z);
// if ac ray is opposite directed - invert it's direction
acRayDirection *= Vector3.Dot(cbNormal, acRayDirection) > 0.0 ? 1 : -1;
FRay acRay = new FRay(A, acRayDirection);
result = GeometryMath.GetIntersectionRayPlane(cbPlane, acRay);
return(result);
}
public void Execute()
{
for (int index = 0; index < length; ++index)
{
int visible = 1;
float2 distRadius = new float2(0, 0);
ref FAABB sectorBound = ref sectorBounds[index];
for (int PlaneIndex = 0; PlaneIndex < 6; ++PlaneIndex)
{
ref FPlane plane = ref planes[PlaneIndex];
distRadius.x = math.dot(plane.normalDist.xyz, sectorBound.center) + plane.normalDist.w;
distRadius.y = math.dot(math.abs(plane.normalDist.xyz), sectorBound.extents);
visible = math.select(visible, 0, distRadius.x + distRadius.y < 0);
}
public static bool IsPointIsidePlane(FPlane plane, Vector3 point, ConvexVolume.RelativePosition relativePosition)
{
bool bResult = false;
float distancePointToPlane = GetDistanceFromPlaneToPoint(plane, point);
if (relativePosition == ConvexVolume.RelativePosition.BEYOND_PLANE)
{
bResult = distancePointToPlane > 0.0f;
}
else if (relativePosition == ConvexVolume.RelativePosition.BEFORE_PLANE)
{
bResult = distancePointToPlane < 0.0f;
}
else
{
bResult = true;
}
return(bResult);
}
/**
* Checks whether two planes are equal within specified tolerance.
*
* @param V The other plane.
* @param Tolerance Error Tolerance.
* @return true if the two planes are equal within specified tolerance, otherwise false.
*/
public bool Equals(FPlane V, float Tolerance = Const.KINDA_SMALL_NUMBER)
{
return(FMath.Abs(X - V.X) < Tolerance && FMath.Abs(Y - V.Y) < Tolerance && FMath.Abs(Z - V.Z) < Tolerance && FMath.Abs(W - V.W) < Tolerance);
}