## siParamClassification

### Description

This determines the classification of a Parameter to give Softimage some hint about its purpose. In most cases it is acceptable to use the default, siClassifUnknown.

### C# Syntax

    siParamClassification.siClassifVisualization                                // 1

    siParamClassification.siClassifPositioning                                  // 2

    siParamClassification.siClassifAppearance                                   // 4

    siParamClassification.siClassifMetaData                                     // 8

    siParamClassification.siClassifModel                                        // 16

    siParamClassification.siClassifTopo                                         // 16481

    siParamClassification.siClassifGeometry                                     // 16449

    siParamClassification.siClassifUnknown                                      // 32768

Constant | Value | Description
--- | --- | ---
siClassifVisualization | 1 | Parameter affects the UI visualization of an object (ex: level of detail)
siClassifPositioning | 2 | Parameter affects the location, size and position of an object (ex: scaling)
siClassifAppearance | 4 | Parameter affects the visual appearance of the default representation of an object (ex: color)
siClassifMetaData | 8 | Means that the parameter affects the description/identification of an object (for example, name or icon). This classification can be useful as an optimization because it signals that no re-rendering is necessary when the parameter changes.
siClassifModel | 16 | Parameter affects the mathematical model of an object (for example, interpolation change of a surface)
siClassifTopo | 16481 | Changing this parameter will change the geometry (adding or removing points) of an object. This information gives Softimage the necessary information to ensure that the object is redrawn and all cluster properties are recalculated each time the parameter changes. Normally this is set on parameters of a generator-type Operator or a CustomProperty connected to a generator-type operator.
siClassifGeometry | 16449 | Changing this parameter will change the position of the points that make up the object (but not add or remove any points). This information gives Softimage the necessary information to properly redraw the object and perform calculations when the parameter changes.
siClassifUnknown | 32768 | Default classification for normal parameters.

### Applies To

SIAddCustomParameter SIAddCustomParam CustomProperty.AddParameter CustomProperty.AddParameter2 XSIFactory.CreateParamDef