static Mesh GetMesh(FBXModelPtr model, float scaleFactor, Vector3 rotationOffset)
{
if (model.GetVertexCount() <= 0)
{
return(null);
}
// vertice
List <Vector3> vertice = new List <Vector3>();
for (int i = 0; i < model.GetVertexCount(); ++i)
{
vertice.Add((FBXVector3ToUnityVector3(model.GetVertex(i)) - FBXVector3ToUnityVector3(model.GetPivotScale())) * scaleFactor);
}
// color
List <Color> colors = new List <Color>();
for (int i = 0; i < model.GetColorCount(); ++i)
{
colors.Add(FBXColorToUnityColor(model.GetColor(i)));
}
// uv
List <List <Vector2> > uvs = new List <List <Vector2> >();
for (int iUVLayer = 0; iUVLayer < model.GetUVLayerCount(); ++iUVLayer)
{
List <Vector2> uv = new List <Vector2>();
for (int iUV = 0; iUV < model.GetUVCount(iUVLayer); ++iUV)
{
uv.Add(FBXVector2ToUnityVector2(model.GetUV(iUVLayer, iUV)));
}
uvs.Add(uv);
}
// normal
List <Vector3> normals = new List <Vector3>();
for (int i = 0; i < model.GetNormalCount(); ++i)
{
normals.Add(FBXVector3ToUnityVector3(model.GetNormal(i)));
}
// tangent
List <Vector4> tangents = new List <Vector4>();
for (int i = 0; i < model.GetTangentCount(); ++i)
{
tangents.Add(FBXVector4ToUnityVector4(model.GetTangent(i)));
}
// indice, flip indice
//Debug.LogFormat( "model has {0} submesh", model.GetMaterialCount() );
for (int i = 0; i < model.GetMaterialCount(); ++i)
{
int materialPolygonCount = model.GetMaterialPolygonCount(i);
//Debug.LogFormat( "material {0} has {1} polygons", i, materialPolygonCount );
}
List <List <int> > indice = new List <List <int> >();
for (int iMaterial = 0; iMaterial < model.GetMaterialCount(); ++iMaterial)
{
List <int> submesh = new List <int>();
for (int i = 0; i < model.GetIndiceCount(iMaterial); i += 3)
{
submesh.Add(model.GetIndex(iMaterial, i));
submesh.Add(model.GetIndex(iMaterial, i + 2));
submesh.Add(model.GetIndex(iMaterial, i + 1));
}
indice.Add(submesh);
}
Mesh mesh = new Mesh();
mesh.SetVertices(vertice);
//Debug.LogFormat( "Mesh {0} has {1} vertice", model.GetName(), vertice.Count );
if (colors.Count > 0)
{
mesh.SetColors(colors);
//Debug.LogFormat( "Mesh {0} has {1} colors", model.GetName(), colors.Count );
}
//else
//{
// Debug.LogWarningFormat( "Mesh {0} has no colors", model.GetName() );
//}
if (uvs.Count > 0)
{
for (int i = 0; i < uvs.Count; ++i)
{
mesh.SetUVs(i, uvs[i]);
//Debug.LogFormat( "Mesh {0} layer {1} has {2} uv", model.GetName(), i, uvs[i].Count );
}
}
//else
//{
// Debug.LogWarningFormat( "Mesh {0} has no uvs", model.GetName() );
//}
if (normals.Count > 0)
{
mesh.SetNormals(normals);
//Debug.LogFormat( "Mesh {0} has {1} normals", model.GetName(), normals.Count );
}
//else
//{
// Debug.LogWarningFormat( "Mesh {0} has no normals", model.GetName() );
//}
if (tangents.Count > 0)
{
mesh.SetTangents(tangents);
// Debug.LogFormat( "Mesh {0} has {1} tangents", model.GetName(), tangents.Count );
}
//else
//{
// Debug.LogWarningFormat( "Mesh {0} has no tangents", model.GetName() );
//}
mesh.subMeshCount = indice.Count;
for (int i = 0; i < indice.Count; ++i)
{
mesh.SetIndices(indice[i].ToArray(), MeshTopology.Triangles, i);
//Debug.LogFormat( "submesh {0} has {1} indice", i, indice[i].Count );
//for( int j = 0; j < indice[i].Count; ++j )
//{
// Debug.LogFormat( "submesh indice[{0}] = {1}", i, indice[i][j] );
//}
}
// mesh.RecalculateNormals();
mesh.Optimize();
return(mesh);
}