public void EvaluateNormals(OutputMesh mesh, CPNGuide guide)
{
int N = guide.GetN();
if (N <= 0)
{
return;
}
bool doTangents = mesh.DoUseTangents();
bool doNormals = mesh.DoNormals();
if (doNormals)
{
float step = 1.0f / N;
for (int j = 1; j < N; j++)
{
EvalAt(j * step, guide);
Vector3 dev;
Vector3 normal = EvalNormal(guide, out dev);
int index = guide.GetIndex(j);
mesh.SetNormal(index, normal.normalized);
if (doTangents)
{
mesh.SetTangent(index, GetTangent(guide, dev, normal).normalized);
}
}
if (doTangents)
{
for (int j = 0; j <= N; j += N)
{
EvalAt(j * step, guide);
Vector3 dev = EvalDev(guide);
int index = guide.GetIndex(j);
Vector3 normal = mesh.GetNormal(index);
mesh.SetTangent(index, GetTangent(guide, dev, normal).normalized);
}
}
}
}