private Vector2 GetDir(OrthoBasis basis, bool useMajor, Vector2 previousDir)
{
Vector2 dir = (useMajor ? basis.Major : basis.Minor);
if (previousDir == Vector2.zero || Vector2.Dot(previousDir, dir) >= 0.0f)
{
return(dir);
}
return(-dir);
}
public OrthoBasis GetBasis(Vertex pos)
{
if (cachedBases.ContainsKey(pos))
{
return(cachedBases[pos]);
}
else
{
OrthoBasis b = GetBasisP(pos.Pos);
cachedBases.Add(pos, b);
return(b);
}
}
public OrthoBasis GetBasisP(Vector2 pos)
{
//Get surface data.
float height;
Vector3 surfNorm;
GetSurfaceData(pos, out height, out surfNorm);
//Get the weight scale for each basis based on its distance.
if (tempDists.Length < RoadOrthoBases.Count)
{
tempDists = new float[RoadOrthoBases.Count];
}
for (int i = 0; i < RoadOrthoBases.Count; ++i)
{
tempDists[i] = pos.Distance(RoadOrthoBases[i].Center) /
Mathf.Max(0.0001f, RoadOrthoBases[i].Importance);
}
float invSum = 1.0f / tempDists.Sum();
//Now calculate the weighted average of the ortho bases.
OrthoBasis ob = new OrthoBasis(Vector2.zero, Vector2.zero);
for (int i = 0; i < RoadOrthoBases.Count; ++i)
{
float weight = 1.0f - (tempDists[i] * invSum);
//Edge-case.
if (RoadOrthoBases.Count == 1)
{
weight = 1.0f;
}
OrthoBasis tempOB = RoadOrthoBases[i].GetOrthoBasis(pos, height, surfNorm);
ob.Major += tempOB.Major * weight;
ob.Minor += tempOB.Minor * weight;
}
return(ob);
}