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);
}
}
}
}
int WriteVertices(OutputMesh mesh)
{
int numberOfVertices = subSet == null?curvedPolygonsNet.GetNumberOfVertices() :
subSet.vertices.Length;
Vector3[] vertices = curvedPolygonsNet.GetVertices();
Vector3[] normals = curvedPolygonsNet.GetNormals();
Vector3[] uvs = curvedPolygonsNet.GetUv();
Vector3[][] properties = curvedPolygonsNet.GetProperties3();
int countProperties = mesh.CountProperties();
//Vector3[] tangents = curvedPolygonsNet.GetTangents();
//bool doTangents = tangents != null;
bool doUvs = uvs != null && mesh.DoUseUVs();
bool doNormals = normals != null && mesh.DoNormals();
for (int i = 0; i < numberOfVertices; i++)
{
int index = subSet == null ? i : subSet.vertices[i];
mesh.SetVertex(index, vertices[index]);
if (doUvs)
{
mesh.SetUV(index, uvs[index]);
}
if (doNormals)
{
mesh.SetNormal(index, normals[index]);
}
for (int k = 0; k < countProperties; k++)
{
mesh.SetProperty3(index, k, properties[k][index]);
}
}
return(numberOfVertices);
}