We present the development of a numerical simulator for digital in-line holography applications. In-line holograms of arbitrarily shaped and arbitrarily located objects are calculated using generalized Huygens-Fresnel integrals. The objects are 2D opaque or phase objects. https://countryscenesaddleryandpetsuppliers.shop/product-category/horse-pilot-xdesign-breeches-ladies/