void Build()
{
var vertexList = new List <VertexPositionColor>();
var indexList = new List <int>();
int index = 0;
foreach (var shape in shapes)
{
vertexList.AddRange(shape.Vertices);
int[] indexArray = shape.Indices;
for (int i = 0; i < indexArray.Length; i++)
{
indexArray[i] += index;
}
indexList.AddRange(indexArray);
index += shape.Vertices.Length;
}
model = GeometricPrimitive <VertexPositionNormalTexture> .New(device, "ShapeMesh", vertexList.ToArray(), indexList.ToArray(), modelOperations : ModelOperations);
}