public void DrawTriangles(string name, int triangleCount)
{
if (!_objectsHandleDictionary.ContainsKey(name))
{
throw new ApplicationException("Object must be added to the renderer before drawing");
}
GL.BindVertexArray(_objectsHandleDictionary[name].ObjectHandle);
GL.DrawElements(BeginMode.Triangles, triangleCount, DrawElementsType.UnsignedInt, IntPtr.Zero);
}