private void Initialize(IEnumerable <IEnumerable <Topology.Face> > faceGroups, ITriangulation triangulation)
{
int maxFaceIndex = -1;
var dynamicFaceSubmeshIndicesArray = new int[65536];
var dynamicFaceFirstVertexIndicesArray = new int[65536];
_cachedIndexedVertexAttributeArrays = new IndexedVertexAttributeArrays();
var submeshList = new List <Submesh>();
var vertexAttributeArrays = new DynamicVertexAttributeArrays(_vertexAttributes, _maxVerticesPerSubmesh);
var triangleIndices = new List <int>();
foreach (var faceGroup in faceGroups)
{
foreach (var face in faceGroup)
{
var vertexCount = triangulation.GetVertexCount(face);
if (vertexAttributeArrays.index + vertexCount > _maxVerticesPerSubmesh)
{
triangulation.FinalizeSubmesh(submeshList.Count);
submeshList.Add(new Submesh(vertexAttributeArrays, triangleIndices));
vertexAttributeArrays.Reset();
triangleIndices.Clear();
}
maxFaceIndex = Mathf.Max(maxFaceIndex, face.index);
SetGrowableArrayElement(ref dynamicFaceSubmeshIndicesArray, face.index, submeshList.Count);
SetGrowableArrayElement(ref dynamicFaceFirstVertexIndicesArray, face.index, vertexAttributeArrays.index);
vertexAttributeArrays.Grow(vertexCount);
triangulation.BuildFace(face, vertexAttributeArrays, triangleIndices);
}
if (vertexAttributeArrays.index > 0)
{
triangulation.FinalizeSubmesh(submeshList.Count);
submeshList.Add(new Submesh(vertexAttributeArrays, triangleIndices));
vertexAttributeArrays.Reset();
triangleIndices.Clear();
}
}
_submeshes = submeshList.ToArray();
var faceCount = maxFaceIndex + 1;
_faceSubmeshIndices = new int[faceCount];
_faceFirstVertexIndices = new int[faceCount];
Array.Copy(dynamicFaceSubmeshIndicesArray, _faceSubmeshIndices, faceCount);
Array.Copy(dynamicFaceFirstVertexIndicesArray, _faceFirstVertexIndices, faceCount);
}
public Submesh(DynamicVertexAttributeArrays vertexAttributeArrays, List <int> triangleIndices)
{
mesh = new Mesh();
isDirty = false;
var length = vertexAttributeArrays.index;
if (CopyArray(ref positions, vertexAttributeArrays.positions, length))
{
mesh.vertices = positions;
}
if (CopyArray(ref normals, vertexAttributeArrays.normals, length))
{
mesh.normals = normals;
}
if (CopyArray(ref colors, vertexAttributeArrays.colors, length))
{
mesh.colors = colors;
}
if (CopyArray(ref colors32, vertexAttributeArrays.colors32, length))
{
mesh.colors32 = colors32;
}
if (CopyArray(ref uvs, vertexAttributeArrays.uvs, length))
{
mesh.uv = uvs;
}
if (CopyArray(ref uvs2, vertexAttributeArrays.uvs2, length))
{
mesh.uv2 = uvs2;
}
if (CopyArray(ref uvs3, vertexAttributeArrays.uvs3, length))
{
mesh.uv3 = uvs3;
}
if (CopyArray(ref uvs4, vertexAttributeArrays.uvs4, length))
{
mesh.uv4 = uvs4;
}
if (CopyArray(ref tangents, vertexAttributeArrays.tangents, length))
{
mesh.tangents = tangents;
}
mesh.triangles = triangleIndices.ToArray();
mesh.RecalculateBounds();
}
