/// <summary>
/// Returns the resulting mesh.
/// </summary>
/// <returns>The resulting mesh.</returns>
public override Mesh ToMesh()
{
int vertexCount = this.vertices.Length;
int triangleCount = this.triangles.Length;
var vertices = new Vector3d[vertexCount];
var indices = new int[subMeshCount][];
var vertArr = this.vertices.Data;
for (int i = 0; i < vertexCount; i++)
{
vertices[i] = vertArr[i].p;
}
// First get the sub-mesh offse-ts
var triArr = this.triangles.Data;
int[] subMeshOffsets = new int[subMeshCount];
int lastSubMeshOffset = -1;
for (int i = 0; i < triangleCount; i++)
{
var triangle = triArr[i];
if (triangle.subMeshIndex != lastSubMeshOffset)
{
for (int j = lastSubMeshOffset + 1; j < triangle.subMeshIndex; j++)
{
subMeshOffsets[j] = i - 1;
}
subMeshOffsets[triangle.subMeshIndex] = i;
lastSubMeshOffset = triangle.subMeshIndex;
}
}
for (int i = lastSubMeshOffset + 1; i < subMeshCount; i++)
{
subMeshOffsets[i] = triangleCount;
}
// Then setup the sub-meshes
for (int subMeshIndex = 0; subMeshIndex < subMeshCount; subMeshIndex++)
{
int startOffset = subMeshOffsets[subMeshIndex];
int endOffset = ((subMeshIndex + 1) < subMeshCount ? subMeshOffsets[subMeshIndex + 1] : triangleCount) - 1;
int subMeshTriangleCount = endOffset - startOffset + 1;
if (subMeshTriangleCount < 0)
{
subMeshTriangleCount = 0;
}
int[] subMeshIndices = new int[subMeshTriangleCount * 3];
for (int triangleIndex = startOffset; triangleIndex <= endOffset; triangleIndex++)
{
var triangle = triArr[triangleIndex];
int offset = (triangleIndex - startOffset) * 3;
subMeshIndices[offset] = triangle.v0;
subMeshIndices[offset + 1] = triangle.v1;
subMeshIndices[offset + 2] = triangle.v2;
}
indices[subMeshIndex] = subMeshIndices;
}
Mesh newMesh = new Mesh(vertices, indices);
if (vertNormals != null)
{
vertNormals.TrimExcess();
newMesh.Normals = vertNormals.Data;
}
if (vertTangents != null)
{
vertTangents.TrimExcess();
newMesh.Tangents = vertTangents.Data;
}
if (vertUV1 != null)
{
vertUV1.TrimExcess();
newMesh.UV1 = vertUV1.Data;
}
if (vertUV2 != null)
{
vertUV2.TrimExcess();
newMesh.UV2 = vertUV2.Data;
}
if (vertUV3 != null)
{
vertUV3.TrimExcess();
newMesh.UV3 = vertUV3.Data;
}
if (vertUV4 != null)
{
vertUV4.TrimExcess();
newMesh.UV4 = vertUV4.Data;
}
if (vertColors != null)
{
vertColors.TrimExcess();
newMesh.Colors = vertColors.Data;
}
if (vertBoneWeights != null)
{
vertBoneWeights.TrimExcess();
newMesh.BoneWeights = vertBoneWeights.Data;
}
return(newMesh);
}