---
name: "SoFaceDetail"
section: "3"
platform: "linux"
package: "coin"
version: "1:4.0.10-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/SoFaceDetail"
---

# SoFaceDetail(3)

The SoFaceDetail class is for storing detailed polygon information.

## NAME

SoFaceDetail - The **SoFaceDetail** class is for storing detailed polygon information.

## SYNOPSIS

\#include \<Inventor/details/SoFaceDetail.h\>

Inherits **SoDetail**.

### Public Member Functions

virtual **SoType** **getTypeId** (void) const\
 **SoFaceDetail** (void)\
 virtual **~SoFaceDetail** ()\
 virtual **SoDetail** \* **copy** (void) const\
 int **getNumPoints** (void) const\
 const **SoPointDetail** \* **getPoint** (const int idx) const\
 **SoPointDetail** \* **getPoints** (void)\
 int **getFaceIndex** (void) const\
 int **getPartIndex** (void) const\
 void **setNumPoints** (const int num)\
 void **setPoint** (const int idx, const **SoPointDetail** \*const detail)\
 void **setFaceIndex** (const int idx)\
 void **setPartIndex** (const int idx)\
 void **incFaceIndex** (void)\
 void **incPartIndex** (void)\

Public Member Functions inherited from **SoDetail** virtual **~SoDetail** ()\
 SbBool **isOfType** (const **SoType** type) const\

### Static Public Member Functions

static **SoType** **getClassTypeId** (void)\
 static void **cleanupClass** (void)\
 static void **initClass** (void)\

Static Public Member Functions inherited from **SoDetail** static void **initClass** (void)\
 static void **initClasses** (void)\
 static **SoType** **getClassTypeId** (void)\

### Additional Inherited Members

Protected Member Functions inherited from **SoDetail** **SoDetail** (void)\

## Detailed Description

The **SoFaceDetail** class is for storing detailed polygon information.

Instances of this class are used among other things for storing information about polygons after pick operations, and for storing information returned to tessellation callbacks.

Note that a **SoFaceDetail** instance consists of a set of **SoPointDetail** instances, one for each vertex of the polygon it represents.

**See also**

**SoRayPickAction**, **SoPickedPoint**, **SoCallbackAction**

## Constructor & Destructor Documentation

### SoFaceDetail::SoFaceDetail (void )

Default constructor sets up an empty, non-valid detail specification.

### SoFaceDetail::~SoFaceDetail () \[virtual\]

Destructor, free internal resources used for storing the polygon vertices.

## Member Function Documentation

### SoType SoFaceDetail::getTypeId (void ) const \[virtual\]

Returns the type identification of an object derived from a class inheriting **SoDetail**. This is used for runtime type checking and "downward" casting.

Implements **SoDetail**.

### SoType SoFaceDetail::getClassTypeId (void ) \[static\]

This static method returns the **SoType** object associated with objects of this class.

### void SoFaceDetail::cleanupClass (void ) \[inline\], \[static\]

This static method cleans up static data of the class.

### SoDetail \* SoFaceDetail::copy (void ) const \[virtual\]

Return a deep copy of ourself.

**Note that if the Coin library has been built as a DLL under Microsoft Windows and you use this method from application code, you** *must* **make sure that both the Coin DLL and the application executable are using the same instance of a C Run-Time (CRT) library. Otherwise, you** *will* **get memory heap corruption upon deallocating the returned instances, eventually leading to mysterious crashes.**\

*Implements* **SoDetail***.*

### int SoFaceDetail::getNumPoints (void ) const

*Number of vertices making up the polygon.*

### const SoPointDetail \* SoFaceDetail::getPoint (const int idx) const

*Returns a pointer into the array of vertices, starting at the idx'th vertex of the polygon.*

*The array will contain (***SoFaceDetail::getNumPoints()** *- idx) elements.*

### SoPointDetail \* SoFaceDetail::getPoints (void )

*Returns the full array of vertices details for the polygon. The array will contain* **SoFaceDetail::getNumPoints()** *elements.*

### int SoFaceDetail::getFaceIndex (void ) const

*Returns the index of this polygon within the faceset node it is part of.*

### int SoFaceDetail::getPartIndex (void ) const

*If this* **SoFaceDetail** *represents a triangle tessellated from a complex shape, this method returns the index of the part of the complex shape it was tessellated from.*

### void SoFaceDetail::setNumPoints (const int num)

*Used internally from library client code setting up a* **SoFaceDetail** *instance.*

**See also**

**getNumPoints()**

### void SoFaceDetail::setPoint (const int idx, const SoPointDetail \*const detail)

*Used internally from library client code setting up a* **SoFaceDetail** *instance.*

**See also**

**getPoint()***,* **getPoints()**

### void SoFaceDetail::setFaceIndex (const int idx)

*Used internally from library client code setting up a* **SoFaceDetail** *instance.*

**See also**

**getFaceIndex()**

### void SoFaceDetail::setPartIndex (const int idx)

*Used internally from library client code setting up a* **SoFaceDetail** *instance.*

**See also**

**getPartIndex()**

### void SoFaceDetail::incFaceIndex (void )

*Used internally from library client code setting up a* **SoFaceDetail** *instance.*

*This function is specific for Coin, and is not present in SGI/TGS Open Inventor.*

### void SoFaceDetail::incPartIndex (void )

*Used internally from library client code setting up a* **SoFaceDetail** *instance.*

*This function is specific for Coin, and is not present in SGI/TGS Open Inventor.*

## Author

*Generated automatically by Doxygen for Coin from the source code.*