// mesh-г tf-р хувиргана
public static void UpdTf(ref Mesh mesh, Tf tf)
{
Vector3[] vs = mesh.vertices.Cln();
Vector3[] ns = mesh.normals.Cln();
for (int i = 0; i < vs.Length; i++)
{
vs[i] = Tf.Rot(tf.r, V3.Mul(vs[i], tf.s)) + tf.t;
ns[i] = Tf.Rot(tf.r, ns[i]).normalized;
}
mesh.vertices = vs;
mesh.normals = ns;
}
///<summary>mesh-р эргэлтийн бие үүсгэнэ</summary>
public static void RotModel(ref Mesh mesh, bool isFill, bool isDisUv, int n, List <Vector2> points, Tf tf)
{
List <Vector2> lis = new List <Vector2>(points);
if (isFill)
{
lis.Insert(0, V2.X(points[0], 0));
lis.Add(V2.X(points[points.Count - 1], 0));
}
// vertices
Vector3[] vs = new Vector3[n * lis.Count];
float dAng = 360f / n;
for (int i = 0; i < lis.Count; i++)
{
for (int j = 0; j < n; j++)
{
vs[i * n + j] = Tf.Rot(tf.r, V3.Mul(new Vector3(lis[i].x * M.Cos(j * dAng), lis[i].y, lis[i].x * M.Sin(j * dAng)), tf.s)) + tf.t;
}
}
// triangles
int[] ts = new int[n * 6 * (lis.Count - 1)];
for (int i = 0; i < lis.Count - 1; i++)
{
for (int j = 0; j < n; j++)
{
for (int k = 0; k < 6; k++)
{
ts[n * 6 * i + j * 6 + k] = n * i + (j + UvUArr[k]) % n + UvVArr[k] * n;
}
}
}
// uv
Vector3[] v = new Vector3[ts.Length];
int[] t = new int[ts.Length];
Vector2[] uv = new Vector2[ts.Length];
float du = 1f / n, dv = 1f / (lis.Count - 1);
if (isDisUv)
{
float dis = 0, tmpDis, curDis = 0;
List <float> disLis = new List <float>();
for (int i = 1; i < lis.Count; i++)
{
tmpDis = Vector3.Distance(lis[i - 1], lis[i]);
disLis.Add(tmpDis);
dis += tmpDis;
}
for (int i = 0; i < ts.Length; i++)
{
v[i] = vs[ts[i]];
t[i] = i;
uv[i] = new Vector2(
(i / 6 % n + UvUArr[i % 6]) * du,
(curDis + UvVArr[i % 6] * disLis[i / 6 / n]) / dis
);
if ((i + 1) % (6 * n) == 0)
{
curDis += disLis[i / 6 / n];
}
}
}
else
{
for (int i = 0; i < ts.Length; i++)
{
v[i] = vs[ts[i]];
t[i] = i;
uv[i] = new Vector2(
(i / 6 % n + UvUArr[i % 6]) * du,
(i / 6 / n + UvVArr[i % 6]) * dv
);
}
}
// mesh
VsTsUvRn(ref mesh, vs, ts, uv);
}