static IndexBuffer IndexPointsBuffer(int pointsCount)
{
Debug.Assert(pointsCount <= VertexThreshold);
if (indexPointsBuffer == null)
{
indexPointsBuffer = new IndexBuffer(VertexThreshold * IndexPoint.GetSizeInShortInts());
indexPointsBuffer.Map(VertexThreshold * IndexPoint.GetSizeInShortInts());
using (var istream = indexPointsBuffer.GetIndexStreamPoint())
{
for (int vi = 0; vi < VertexThreshold; ++vi)
{
istream.AddPoint(new IndexPoint(vi));
}
}
indexPointsBuffer.Unmap();
}
Debug.Assert(indexPointsBuffer.IsValid());
return(indexPointsBuffer);
}