int compareLen(Grassface a, Grassface b)
{
if (a.ulen > b.ulen)
{
return(1);
}
else if (a.ulen < b.ulen)
{
return(-1);
}
else
{
return(0);
}
}
void ProcessUV2(ref List <Vector2> uv2s)
{
List <Grassface> faces = new List <Grassface>();
List <Grassface> outfaces = new List <Grassface>();
List <float> listLenghs = new List <float>();
float sum = 0;
for (int i = 0; i < uv2s.Count; i += 4)
{
float len = uv2s[i + 2].x;
faces.Add(new Grassface(i / 4, 0f, 0f, len));
sum += len;
}
float avlen = Mathf.Sqrt(sum);
faces.Sort(compareLen);
int vIndex = 0;
while (faces.Count != 0)
{
float uSum = 0;
for (int i = faces.Count - 1; i >= 0; i--)
{
Grassface face = faces[i];
if (uSum + face.ulen < avlen)
{
face.startu = uSum;
face.startv = vIndex;
uSum += face.ulen;
outfaces.Add(face);
faces.RemoveAt(i);
}
}
vIndex++;
}
for (int i = 0; i < outfaces.Count; i++)
{
Grassface face = outfaces[i];
int index = face.index;
uv2s[index * 4 + 0] = new Vector2(face.startu, face.startv);
uv2s[index * 4 + 1] = new Vector2(face.startu, face.startv + 1);
uv2s[index * 4 + 2] = new Vector2(face.startu + face.ulen, face.startv);
uv2s[index * 4 + 3] = new Vector2(face.startu + face.ulen, face.startv + 1);
}
}
