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 # File IAS\_SurfaceSag.cs

 Last update: 13.03.2026 

<a id="_i_a_s___surface_sag_8cs"></a>

![](https://img.shields.io/badge/language-C%23-blue "C#")

## Classes

- [ZOSAPI::Analysis::Settings::Surface::IAS\_SurfaceSag](interface_z_o_s_a_p_i_1_1_analysis_1_1_settings_1_1_surface_1_1_i_a_s___surface_sag.md#interface_z_o_s_a_p_i_1_1_analysis_1_1_settings_1_1_surface_1_1_i_a_s___surface_sag)

## Namespaces

- [ZOSAPI](namespace_z_o_s_a_p_i.md#namespace_z_o_s_a_p_i)
- [ZOSAPI::Analysis](namespace_z_o_s_a_p_i_1_1_analysis.md#namespace_z_o_s_a_p_i_1_1_analysis)
- [ZOSAPI::Analysis::Settings](namespace_z_o_s_a_p_i_1_1_analysis_1_1_settings.md#namespace_z_o_s_a_p_i_1_1_analysis_1_1_settings)
- [ZOSAPI::Analysis::Settings::Surface](namespace_z_o_s_a_p_i_1_1_analysis_1_1_settings_1_1_surface.md#namespace_z_o_s_a_p_i_1_1_analysis_1_1_settings_1_1_surface)

## Source

```csharp
using System;
using System.Runtime.InteropServices;

namespace ZOSAPI.Analysis.Settings.Surface
{
    [ComVisible(true)]
    [Guid("8F426DA5-BDDA-4956-AC0E-E4A6560916CA")]
    [InterfaceType(ComInterfaceType.InterfaceIsDual)]
    public interface IAS_SurfaceSag : IAS_
    {
        IAS_Surface Surface { get; }

        SampleSizes_Pow2Plus1_X Sampling { get; set; }
        SurfaceSagData Data { get; set; }
        ShowAs ShowAs { get; set; }
        string ContourFormat { get; set; }
        RemoveOptions RemoveOption { get; set; }
        BestFitSphereOptions BestFitSphereOption { get; set; }
        bool ConsiderOffAxisAperture { get; set; }
        bool ReverseDirection { get; set; }
    }
}

```