--- name: "SoQuadMesh" 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/SoQuadMesh" --- # SoQuadMesh(3) The SoQuadMesh class is used to render and optimize a quadrilateral mesh. ## NAME SoQuadMesh - The **SoQuadMesh** class is used to render and optimize a quadrilateral mesh. ## SYNOPSIS \#include \ Inherits **SoNonIndexedShape**. ### Public Member Functions virtual **SoType** **getTypeId** (void) const\ **SoQuadMesh** (void)\ virtual void **GLRender** (**SoGLRenderAction** \*action)\ virtual void **getPrimitiveCount** (**SoGetPrimitiveCountAction** \*action)\ virtual SbBool **generateDefaultNormals** (**SoState** \*state, **SoNormalBundle** \*nb)\ Public Member Functions inherited from **SoVertexShape** virtual void **notify** (**SoNotList** \*nl)\ virtual void **write** (**SoWriteAction** \*action)\ Public Member Functions inherited from **SoShape** virtual SbBool **affectsState** (void) const\ virtual void **getBoundingBox** (**SoGetBoundingBoxAction** \*action)\ virtual void **rayPick** (**SoRayPickAction** \*action)\ virtual void **callback** (**SoCallbackAction** \*action)\ const **SoBoundingBoxCache** \* **getBoundingBoxCache** (void) const\ Public Member Functions inherited from **SoNode** void **setOverride** (const SbBool state)\ SbBool **isOverride** (void) const\ void **setNodeType** (const **NodeType** type)\ **NodeType** **getNodeType** (void) const\ virtual **SoNode** \* **copy** (SbBool copyconnections=FALSE) const\ virtual void **doAction** (**SoAction** \*action)\ virtual void **GLRenderBelowPath** (**SoGLRenderAction** \*action)\ virtual void **GLRenderInPath** (**SoGLRenderAction** \*action)\ virtual void **GLRenderOffPath** (**SoGLRenderAction** \*action)\ virtual void **getMatrix** (**SoGetMatrixAction** \*action)\ virtual void **handleEvent** (**SoHandleEventAction** \*action)\ virtual void **pick** (**SoPickAction** \*action)\ virtual void **search** (**SoSearchAction** \*action)\ virtual void **audioRender** (**SoAudioRenderAction** \*action)\ virtual void **grabEventsSetup** (void)\ virtual void **grabEventsCleanup** (void)\ virtual void **startNotify** (void)\ SbUniqueId **getNodeId** (void) const\ virtual **SoChildList** \* **getChildren** (void) const\ virtual void **writeInstance** (**SoOutput** \*out)\ virtual **SoNode** \* **addToCopyDict** (void) const\ virtual void **copyContents** (const **SoFieldContainer** \*from, SbBool copyconnections)\ virtual **SoFieldContainer** \* **copyThroughConnection** (void) const\ Public Member Functions inherited from **SoFieldContainer** void **setToDefaults** (void)\ SbBool **hasDefaultValues** (void) const\ SbBool **fieldsAreEqual** (const **SoFieldContainer** \*container) const\ void **copyFieldValues** (const **SoFieldContainer** \*container, SbBool copyconnections=FALSE)\ SbBool **set** (const char \*const fielddata)\ void **get** (**SbString** &fielddata)\ virtual int **getFields** (**SoFieldList** &l) const\ virtual int **getAllFields** (**SoFieldList** &l) const\ virtual **SoField** \* **getField** (const **SbName** &name) const\ virtual **SoField** \* **getEventIn** (const **SbName** &name) const\ virtual **SoField** \* **getEventOut** (const **SbName** &name) const\ SbBool **getFieldName** (const **SoField** \*const field, **SbName** &name) const\ SbBool **enableNotify** (const SbBool flag)\ SbBool **isNotifyEnabled** (void) const\ SbBool **set** (const char \*fielddata, **SoInput** \*input)\ void **get** (**SbString** &fielddata, **SoOutput** \*out)\ virtual SbBool **validateNewFieldValue** (**SoField** \*field, void \*newval)\ virtual void **addWriteReference** (**SoOutput** \*out, SbBool isfromfield=FALSE)\ SbBool **getIsBuiltIn** (void) const\ virtual void **getFieldsMemorySize** (size\_t &managed, size\_t &unmanaged) const\ void **setUserData** (void \*userdata) const\ void \* **getUserData** (void) const\ Public Member Functions inherited from **SoBase** void **ref** (void) const\ void **unref** (void) const\ void **unrefNoDelete** (void) const\ int32\_t **getRefCount** (void) const\ void **touch** (void)\ SbBool **isOfType** (**SoType** type) const\ Returns TRUE if the type of this object is either of the same type or inherited from *type*. virtual **SbName** **getName** (void) const\ virtual void **setName** (const **SbName** &newname)\ void **addAuditor** (void \*const auditor, const **SoNotRec::Type** type)\ void **removeAuditor** (void \*const auditor, const **SoNotRec::Type** type)\ const **SoAuditorList** & **getAuditors** (void) const\ SbBool **shouldWrite** (void)\ void **assertAlive** (void) const\ ### Static Public Member Functions static **SoType** **getClassTypeId** (void)\ static void **initClass** (void)\ Static Public Member Functions inherited from **SoNonIndexedShape** static **SoType** **getClassTypeId** (void)\ static void **initClass** (void)\ Static Public Member Functions inherited from **SoVertexShape** static **SoType** **getClassTypeId** (void)\ static void **initClass** (void)\ Static Public Member Functions inherited from **SoShape** static **SoType** **getClassTypeId** (void)\ static void **initClass** (void)\ Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system. static void **getScreenSize** (**SoState** \*const state, const **SbBox3f** &boundingbox, **SbVec2s** &rectsize)\ static float **getDecimatedComplexity** (**SoState** \*state, float complexity)\ Static Public Member Functions inherited from **SoNode** static uint32\_t **getCompatibilityTypes** (const **SoType** &nodetype)\ static **SoType** **getClassTypeId** (void)\ static **SoNode** \* **getByName** (const **SbName** &name)\ static int **getByName** (const **SbName** &name, **SoNodeList** &l)\ static void **initClass** (void)\ Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system. static void **initClasses** (void)\ static SbUniqueId **getNextNodeId** (void)\ static int **getActionMethodIndex** (const **SoType** type)\ static void **getBoundingBoxS** (**SoAction** \*action, **SoNode** \*node)\ static void **GLRenderS** (**SoAction** \*action, **SoNode** \*node)\ static void **callbackS** (**SoAction** \*action, **SoNode** \*node)\ static void **getMatrixS** (**SoAction** \*action, **SoNode** \*node)\ static void **handleEventS** (**SoAction** \*action, **SoNode** \*node)\ static void **pickS** (**SoAction** \*action, **SoNode** \*node)\ static void **rayPickS** (**SoAction** \*action, **SoNode** \*node)\ static void **searchS** (**SoAction** \*action, **SoNode** \*node)\ static void **writeS** (**SoAction** \*action, **SoNode** \*node)\ static void **audioRenderS** (**SoAction** \*action, **SoNode** \*node)\ static void **getPrimitiveCountS** (**SoAction** \*action, **SoNode** \*node)\ Static Public Member Functions inherited from **SoFieldContainer** static void **initClass** (void)\ Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system. static **SoType** **getClassTypeId** (void)\ This static method returns the **SoType** object associated with objects of this class. static void **cleanupClass** (void)\ static void **initCopyDict** (void)\ static void **addCopy** (const **SoFieldContainer** \*orig, const **SoFieldContainer** \*copy)\ static **SoFieldContainer** \* **checkCopy** (const **SoFieldContainer** \*orig)\ static **SoFieldContainer** \* **findCopy** (const **SoFieldContainer** \*orig, const SbBool copyconnections)\ static void **copyDone** (void)\ Static Public Member Functions inherited from **SoBase** static void **initClass** (void)\ Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system. static **SoType** **getClassTypeId** (void)\ This static method returns the **SoType** object associated with objects of this class. static void **addName** (**SoBase** \*const base, const char \*const name)\ static void **removeName** (**SoBase** \*const base, const char \*const name)\ static void **incrementCurrentWriteCounter** (void)\ static void **decrementCurrentWriteCounter** (void)\ static **SoBase** \* **getNamedBase** (const **SbName** &name, **SoType** type)\ static int **getNamedBases** (const **SbName** &name, **SoBaseList** &baselist, **SoType** type)\ static SbBool **read** (**SoInput** \*input, **SoBase** \*&base, **SoType** expectedtype)\ static void **setInstancePrefix** (const **SbString** &c)\ static void **setTraceRefs** (SbBool trace)\ static SbBool **getTraceRefs** (void)\ static SbBool **connectRoute** (**SoInput** \*input, const **SbName** &fromnodename, const **SbName** &fromfieldname, const **SbName** &tonodename, const **SbName** &tofieldname)\ static SbBool **readRoute** (**SoInput** \*input)\ ### Public Attributes **SoSFInt32** **verticesPerColumn**\ **SoSFInt32** **verticesPerRow**\ Public Attributes inherited from **SoNonIndexedShape** **SoSFInt32** **startIndex**\ Public Attributes inherited from **SoVertexShape** **SoSFNode** **vertexProperty**\ ### Protected Member Functions virtual const **SoFieldData** \* **getFieldData** (void) const\ virtual **~SoQuadMesh** ()\ virtual void **generatePrimitives** (**SoAction** \*action)\ virtual void **computeBBox** (**SoAction** \*action, **SbBox3f** &box, **SbVec3f** ¢er)\ virtual SbBool **generateDefaultNormals** (**SoState** \*, **SoNormalCache** \*)\ Protected Member Functions inherited from **SoNonIndexedShape** **SoNonIndexedShape** (void)\ virtual **~SoNonIndexedShape** ()\ void **computeCoordBBox** (**SoAction** \*action, int numVertices, **SbBox3f** &box, **SbVec3f** ¢er)\ void **fixNumVerticesPointers** (**SoState** \*state, const int32\_t \*&start, const int32\_t \*&end, int32\_t \*dummyarray) const\ Protected Member Functions inherited from **SoVertexShape** **SoVertexShape** (void)\ virtual **~SoVertexShape** ()\ virtual SbBool **shouldGLRender** (**SoGLRenderAction** \*action)\ void **setNormalCache** (**SoState** \*const state, const int num, const **SbVec3f** \*normals)\ **SoNormalCache** \* **getNormalCache** (void) const\ **SoNormalCache** \* **generateAndReadLockNormalCache** (**SoState** \*const state)\ void **getVertexData** (**SoState** \*state, const **SoCoordinateElement** \*&coords, const **SbVec3f** \*&normals, const SbBool neednormals)\ void **readLockNormalCache** (void)\ void **readUnlockNormalCache** (void)\ Protected Member Functions inherited from **SoShape** **SoShape** (void)\ virtual **~SoShape** ()\ float **getComplexityValue** (**SoAction** \*action)\ void **beginSolidShape** (**SoGLRenderAction** \*action)\ void **endSolidShape** (**SoGLRenderAction** \*action)\ void **GLRenderBoundingBox** (**SoGLRenderAction** \*action)\ SbBool **shouldPrimitiveCount** (**SoGetPrimitiveCountAction** \*action)\ SbBool **shouldRayPick** (**SoRayPickAction** \*const action)\ void **computeObjectSpaceRay** (**SoRayPickAction** \*const action)\ void **computeObjectSpaceRay** (**SoRayPickAction** \*const action, const **SbMatrix** &matrix)\ virtual **SoDetail** \* **createTriangleDetail** (**SoRayPickAction** \*action, const **SoPrimitiveVertex** \*v1, const **SoPrimitiveVertex** \*v2, const **SoPrimitiveVertex** \*v3, **SoPickedPoint** \*pp)\ virtual **SoDetail** \* **createLineSegmentDetail** (**SoRayPickAction** \*action, const **SoPrimitiveVertex** \*v1, const **SoPrimitiveVertex** \*v2, **SoPickedPoint** \*pp)\ virtual **SoDetail** \* **createPointDetail** (**SoRayPickAction** \*action, const **SoPrimitiveVertex** \*v, **SoPickedPoint** \*pp)\ void **invokeTriangleCallbacks** (**SoAction** \*const action, const **SoPrimitiveVertex** \*const v1, const **SoPrimitiveVertex** \*const v2, const **SoPrimitiveVertex** \*const v3)\ void **invokeLineSegmentCallbacks** (**SoAction** \*const action, const **SoPrimitiveVertex** \*const v1, const **SoPrimitiveVertex** \*const v2)\ void **invokePointCallbacks** (**SoAction** \*const action, const **SoPrimitiveVertex** \*const v)\ void **beginShape** (**SoAction** \*const action, const **TriangleShape** shapetype, **SoDetail** \*const detail=NULL)\ void **shapeVertex** (const **SoPrimitiveVertex** \*const v)\ void **endShape** (void)\ void **generateVertex** (**SoPrimitiveVertex** \*const pv, const **SbVec3f** &point, const SbBool useTexFunc, const **SoMultiTextureCoordinateElement** \*const tce, const float s, const float t, const **SbVec3f** &normal)\ void **generateVertex** (**SoPrimitiveVertex** \*const pv, const **SbVec3f** &point, const SbBool useTexFunc, const **SoMultiTextureCoordinateElement** \*const tce, const float s, const float t, const float r, const **SbVec3f** &normal)\ SbBool **startVertexArray** (**SoGLRenderAction** \*action, const **SoCoordinateElement** \*coords, const **SbVec3f** \*pervertexnormals, const SbBool texpervertex, const SbBool colorpervertex)\ void **finishVertexArray** (**SoGLRenderAction** \*action, const SbBool vbo, const SbBool normpervertex, const SbBool texpervertex, const SbBool colorpervertex)\ Protected Member Functions inherited from **SoNode** **SoNode** (void)\ virtual **~SoNode** ()\ virtual SbBool **readInstance** (**SoInput** \*in, unsigned short flags)\ Protected Member Functions inherited from **SoFieldContainer** **SoFieldContainer** (void)\ virtual **~SoFieldContainer** ()\ Protected Member Functions inherited from **SoBase** **SoBase** (void)\ virtual **~SoBase** ()\ virtual void **destroy** (void)\ SbBool **hasMultipleWriteRefs** (void) const\ SbBool **writeHeader** (**SoOutput** \*out, SbBool isgroup, SbBool isengine) const\ void **writeFooter** (**SoOutput** \*out) const\ virtual const char \* **getFileFormatName** (void) const\ virtual **SoNotRec** **createNotRec** (void)\ ### Static Protected Member Functions static const **SoFieldData** \*\* **getFieldDataPtr** (void)\ Static Protected Member Functions inherited from **SoNonIndexedShape** static const **SoFieldData** \*\* **getFieldDataPtr** (void)\ Static Protected Member Functions inherited from **SoVertexShape** static const **SoFieldData** \*\* **getFieldDataPtr** (void)\ Static Protected Member Functions inherited from **SoShape** static const **SoFieldData** \*\* **getFieldDataPtr** (void)\ Static Protected Member Functions inherited from **SoNode** static const **SoFieldData** \*\* **getFieldDataPtr** (void)\ static void **setNextActionMethodIndex** (int index)\ static int **getNextActionMethodIndex** (void)\ static void **incNextActionMethodIndex** (void)\ static void **setCompatibilityTypes** (const **SoType** &nodetype, const uint32\_t bitmask)\ Static Protected Member Functions inherited from **SoBase** static uint32\_t **getCurrentWriteCounter** (void)\ static void **staticDataLock** (void)\ static void **staticDataUnlock** (void)\ ### Additional Inherited Members Public Types inherited from **SoShape** enum **TriangleShape** { **TRIANGLE\_STRIP**, **TRIANGLE\_FAN**, **TRIANGLES**, **POLYGON**, **QUADS**, **QUAD\_STRIP**, **POINTS**, **LINES**, **LINE\_STRIP** }\ Public Types inherited from **SoNode** enum **NodeType** { **INVENTOR** = 0x0000, **VRML1** = 0x0001, **VRML2** = 0x0002, **INVENTOR\_1** = 0x0004, **INVENTOR\_2\_0** = 0x0008, **INVENTOR\_2\_1** = 0x0010, **INVENTOR\_2\_5** = 0x0020, **INVENTOR\_2\_6** = 0x0040, **COIN\_1\_0** = 0x0080, **COIN\_2\_0** = 0x0100, **EXTENSION** = 0x0200, **COIN\_2\_2** = 0x0400, **COIN\_2\_3** = 0x0800, **COIN\_2\_4** = 0x1000, **INVENTOR\_5\_0** = 0x2000, **COIN\_2\_5** = 0x4000, **COIN\_3\_0** = 0x8000, **INVENTOR\_6\_0** = 0x10000, **COIN\_4\_0** = 0x20000 }\ Protected Types inherited from **SoBase** enum **BaseFlags** { **IS\_ENGINE** = 0x01, **IS\_GROUP** = 0x02 }\ Protected Attributes inherited from **SoNode** SbUniqueId **uniqueId**\ Protected Attributes inherited from **SoFieldContainer** SbBool **isBuiltIn**\ Static Protected Attributes inherited from **SoNode** static SbUniqueId **nextUniqueId** = 1\ static int **nextActionMethodIndex** = 0\ ## Detailed Description The **SoQuadMesh** class is used to render and optimize a quadrilateral mesh. This node uses the coordinates in order, either from the state or from the **SoQuadMesh::vertexProperty** node, to construct a quadrilateral mesh. The quads are generated in row major order, using the two fields **SoQuadMesh::verticesPerColumn** and **SoQuadMesh::verticesPerRow** to specify the mesh. E.g. if **SoQuadMesh::verticesPerColumn** is 3 and **SoQuadMesh::verticesPerRow** is 2, two quads will be generated with the first one using (in order) coordinates 0, 1, 3 and 2, the second one using coordinates 2, 3, 5 and 4 (you get three rows of vertices; the first row uses vertices 0 and 1, the second row 2 and 3, and the third row 4 and 5). Here's a quick and simple usage example code snippet: ``` // Vertices for the Quad mesh. static float vertices[25][3] = { // Row 1 {-11, 0, 1}, {0, 11, 1}, {11, 0, 1}, {0, -11, 1}, {-11, 0, 1}, // Row 2 {-9, 0, 1}, {0, 9, 1}, {9, 0, 1}, {0, -9, 1}, {-9, 0, 1}, // Row 3 {-9, 0, -1}, {0, 9, -1}, {9, 0, -1}, {0, -9, -1}, {-9, 0, -1}, // Row 4 {-11, 0, -1}, {0, 11, -1}, {11, 0, -1}, {0, -11, -1}, {-11, 0, -1}, // Row 5 {-11, 0, 1}, {0, 11, 1}, {11, 0, 1}, {0, -11, 1}, {-11, 0, 1} }; // This function generates an object by using the SoQuadMesh node // Return: // SoSeparator * static SoSeparator * quadMesh(void) { SoSeparator * qm = new SoSeparator; // Define coordinates SoCoordinate3 * coords = new SoCoordinate3; coords->point.setValues(0, 30, vertices); qm->addChild(coords); // QuadMesh SoQuadMesh * mesh = new SoQuadMesh; mesh->verticesPerRow = 5; mesh->verticesPerColumn = 5; qm->addChild(mesh); return qm; } ``` The quadmesh geometry resulting from this code looks like this:\ Here is another example, this time making a 2x2 grid, with a texture: ``` #Inventor V2.1 ascii Separator { Complexity { textureQuality 0.01 } Texture2 { image 2 2 4 0xff0000ff 0x00ff00ff 0xffff00ff 0xff00ffff } Coordinate3 { point [ 0 2 0, 1 2 0, 2 2 0, 0 1 0, 1 1 0, 2 1 0, 0 0 0, 1 0 0, 2 0 0 ] } QuadMesh { verticesPerRow 3 verticesPerColumn 3 } } ``` For **SoQuadMesh**, normals and materials can be bound PER\_PART (per row), PER\_FACE, PER\_VERTEX and OVERALL. The default material binding is OVERALL. The default normal binding is PER\_VERTEX. A note about **SoQuadMesh** shading: the quads in the mesh are just passed on to OpenGL's GL\_QUAD primitive rendering. Under certain circumstances, this can lead to artifacts in how your meshes are shaded. This is an inherent problem with drawing quads in meshes. There is a work around solution for the above mentioned problem that can be applied with Coin: by setting the global environment variable COIN\_QUADMESH\_PRECISE\_LIGHTING to "1", the quads will be broken up into triangles before rendered, and shading will likely look much better. Be aware that this technique causes rendering of the **SoQuadMesh** to slow down by an approximate factor of 6. The "precise lighting" technique is currently limited to work only when **SoQuadMesh** rendering is parameterized with 3D coordinates, a material binding that is *not* per vertex, and if texture mapping is done is must be without using any of the **SoTextureCoordinateFunction** subclass nodes. **FILE FORMAT/DEFAULTS:** ``` QuadMesh { vertexProperty NULL startIndex 0 verticesPerColumn 1 verticesPerRow 1 } ``` **See also** **SoTriangleStripSet** **SoIndexedTriangleStripSet** ## Constructor & Destructor Documentation ### SoQuadMesh::SoQuadMesh (void ) Constructor. ### SoQuadMesh::~SoQuadMesh () \[protected\], \[virtual\] Destructor. ## Member Function Documentation ### SoType SoQuadMesh::getClassTypeId (void ) \[static\] This static method returns the **SoType** object associated with objects of this class. ### SoType SoQuadMesh::getTypeId (void ) const \[virtual\] Returns the type identification of an object derived from a class inheriting **SoBase**. This is used for runtime type checking and "downward" casting. Reimplemented from **SoNonIndexedShape**. ### const SoFieldData \*\* SoQuadMesh::getFieldDataPtr (void ) \[static\], \[protected\] *This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.*\ Returns the **SoFieldData** class which holds information about fields in this node. ### const SoFieldData \* SoQuadMesh::getFieldData (void ) const \[protected\], \[virtual\] Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL. Reimplemented from **SoNonIndexedShape**. ### void SoQuadMesh::initClass (void ) \[static\] ### void SoQuadMesh::GLRender (SoGLRenderAction \* action) \[virtual\] Action method for the **SoGLRenderAction**. This is called during rendering traversals. Nodes influencing the rendering state in any way or want to throw geometry primitives at OpenGL override this method. Reimplemented from **SoShape**. ### void SoQuadMesh::getPrimitiveCount (SoGetPrimitiveCountAction \* action) \[virtual\] Action method for the **SoGetPrimitiveCountAction**. Calculates the number of triangle, line segment and point primitives for the node and adds these to the counters of the *action*. Nodes influencing how geometry nodes calculate their primitive count also override this method to change the relevant state variables. Reimplemented from **SoShape**. ### SbBool SoQuadMesh::generateDefaultNormals (SoState \* state, SoNormalBundle \* bundle) \[virtual\] *This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.*\ Subclasses should override this method to generate default normals using the **SoNormalBundle** class. TRUE should be returned if normals were generated, FALSE otherwise. Default method returns FALSE. This function is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.\ Reimplemented from **SoVertexShape**. ### void SoQuadMesh::generatePrimitives (SoAction \* action) \[protected\], \[virtual\] The method implements action behavior for shape nodes for **SoCallbackAction**. It is invoked from **SoShape::callback()**. (Subclasses should *not* override **SoNode::callback()**.) The subclass implementations uses the convenience methods **SoShape::beginShape()**, **SoShape::shapeVertex()**, and **SoShape::endShape()**, with **SoDetail** instances, to pass the primitives making up the shape back to the caller. Implements **SoShape**. ### void SoQuadMesh::computeBBox (SoAction \* action, SbBox3f & box, SbVec3f & center) \[protected\], \[virtual\] Implemented by **SoShape** subclasses to let the **SoShape** superclass know the exact size and weighted center point of the shape's bounding box. The bounding box and center point should be calculated and returned in the local coordinate system. The method implements action behavior for shape nodes for **SoGetBoundingBoxAction**. It is invoked from **SoShape::getBoundingBox()**. (Subclasses should *not* override **SoNode::getBoundingBox()**.) The *box* parameter sent in is guaranteed to be an empty box, while *center* is undefined upon function entry. Implements **SoShape**. ### SbBool SoQuadMesh::generateDefaultNormals (SoState \* state, SoNormalCache \* cache) \[protected\], \[virtual\] *This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.*\ Subclasses should override this method to generate default normals using the **SoNormalCache** class. This is more effective than using **SoNormalGenerator**. Return TRUE if normals were generated, FALSE otherwise. Default method just returns FALSE. This function is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.\ Reimplemented from **SoVertexShape**. ## Member Data Documentation ### SoSFInt32 SoQuadMesh::verticesPerColumn Specifies to number of vertices in each column. ### SoSFInt32 SoQuadMesh::verticesPerRow Specifies the number of vertices in each row. ## Author Generated automatically by Doxygen for Coin from the source code.