public CxBillboard CreateVertices(bool randomize = true)
{
if (_items==null || !_items.Any())
return this;
var billboardVertices = new CxBillboardVertex[_items.Count];
var i = 0;
var random = new Random();
foreach (var t in _items)
createOne(
ref i,
billboardVertices,
t.Item1 + World.TranslationVector,
t.Item2,
randomize ? 0.0001f + (float) random.NextDouble() : 0.5f);
_items = null;
_vertexBuffer = Buffer.Vertex.New(Effect.GraphicsDevice, billboardVertices);
_vertexInputLayout = VertexInputLayout.FromBuffer(0, _vertexBuffer);
return this;
}
private void createOne(
ref int i,
CxBillboardVertex[] bv,
Vector3 p,
Vector3 n,
float rnd)
{
bv[i++] = new CxBillboardVertex(p, Vector3.Normalize(n), rnd);
}
