private static void CloneVertices(List <Segment> segments, int segIndex, GeneratingModel model, List <int> output, ref int wrapPoint)
{
var input = output.ToArray();
output.Clear();
var seg = segments[segIndex];
bool wrapProcessed = false;
for (int i = 0; i < input.Length; ++i)
{
var rdv = model.rdv[input[i]];
var deg = seg.Rotation0Fraction + seg.RotationStepFraction * i;
if (deg >= 1)
{
if (i != input.Length - 1)
{
continue; //should never happen
}
deg = 0;
}
rdv.Normal = CalculateNormal(segments, segIndex, deg, true);
output.Add(model.AddRDV(rdv));
if (rdv.UV.Y == 0 && wrapPoint != -1)
{
if (wrapProcessed)
{
throw new Exception();
}
var rdv2 = new ModelVertex
{
Position = model.rdv[wrapPoint].Position,
Normal = rdv.Normal,
UV = model.rdv[wrapPoint].UV,
};
wrapPoint = model.AddRDV(rdv2);
wrapProcessed = true;
}
}
if (!wrapProcessed && wrapPoint != -1)
{
throw new Exception();
}
}
private static int GetVertexIndex(ObjModel model, string str)
{
if (!model.ModelVertexString.TryGetValue(str, out var index))
{
ModelVertex mv = new ModelVertex();
var ci = str.Split('/');
mv.Position = model.Position[int.Parse(ci[0]) - 1];
if (ci.Length >= 2 && ci[1].Length > 0)
{
mv.UV = model.TexCoord[int.Parse(ci[1]) - 1];
}
if (ci.Length >= 3 && ci[2].Length > 0)
{
mv.Normal = model.Normal[int.Parse(ci[2]) - 1];
}
index = model.ModelVertices.Count;
model.ModelVertices.Add(mv);
model.ModelVertexString.Add(str, index);
}
return(index);
}
