SoQuadMesh(3)

📦
version 4.0.10 · 4 versions
, in fedora 43, fedora 44

✨ NAME ✨

SoQuadMesh — okay so bestie, this is the Coin class SoQuadMesh, and its whole job is to render a quadrilateral mesh and optimize it. That's it, that's the girl 💅 She's giving "quad grid but make it efficient", and honestly? Iconic.

🦋 SYNOPSIS 🦋

#include <Inventor/nodes/SoQuadMesh.h>

Inherits SoNonIndexedShape.

💖 Public Member Functions 💖

  • virtual SoType getTypeId (void) const
  • SoQuadMesh (void) — the constructor, she's right there, no notes 🎀
  • 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 &center)
  • virtual SbBool generateDefaultNormals (SoState *, SoNormalCache *)

💜 Protected Member Functions inherited from SoNonIndexedShape 💜

  • SoNonIndexedShape (void)
  • virtual ~SoNonIndexedShape ()
  • void computeCoordBBox (SoAction *action, int numVertices, SbBox3f &box, SbVec3f &center)
  • 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)

okay bestie that's just part 1 of this absolute novel of a manpage 😭 more parts are pulling up, don't go anywhere 🫶

💜 Protected Member Functions inherited from SoShape 💜

bestie these are the protected helpers that SoShape hands down to SoQuadMesh. protected = family-only, you're not supposed to be calling these from the outside, iykyk 💅

  • SoShape(void) — constructor. protected, so it's a subclasses-only situation ✨
  • virtual ~SoShape() — destructor, and yes it's virtual 🌸
  • float getComplexityValue(SoAction *action) — takes an SoAction *action and returns a float 👑
  • void beginSolidShape(SoGLRenderAction *action) — takes an SoGLRenderAction *action, returns void 🎀
  • void endSolidShape(SoGLRenderAction *action) — same deal, SoGLRenderAction *action in, nothing out 🦋
  • void GLRenderBoundingBox(SoGLRenderAction *action) — SoGLRenderAction *action, returns void ✨
  • SbBool shouldPrimitiveCount(SoGetPrimitiveCountAction *action) — SoGetPrimitiveCountAction *action in, SbBool out 💖
  • SbBool shouldRayPick(SoRayPickAction *const action) — note the *const — takes an SoRayPickAction *const action, returns SbBool 🔥
  • void computeObjectSpaceRay(SoRayPickAction *const action) — the first overload, SoRayPickAction *const action, returns void 🌈
  • void computeObjectSpaceRay(SoRayPickAction *const action, const SbMatrix &matrix) — the second overload, and this one also takes a const SbMatrix &matrix 💫
  • virtual SoDetail * createTriangleDetail(SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, const SoPrimitiveVertex *v3, SoPickedPoint *pp) — virtual, and it's bringing v1, v2, v3 and a SoPickedPoint *pp to the party, returns an SoDetail * 🍓
  • virtual SoDetail * createLineSegmentDetail(SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, SoPickedPoint *pp) — virtual, two vertices and a picked point in, SoDetail * out ✨
  • virtual SoDetail * createPointDetail(SoRayPickAction *action, const SoPrimitiveVertex *v, SoPickedPoint *pp) — virtual, one const SoPrimitiveVertex *v plus SoPickedPoint *pp, returns SoDetail * 💜
  • void invokeTriangleCallbacks(SoAction *const action, const SoPrimitiveVertex *const v1, const SoPrimitiveVertex *const v2, const SoPrimitiveVertex *const v3) — SoAction *const action and three const SoPrimitiveVertex *const friends, returns void 🌸
  • void invokeLineSegmentCallbacks(SoAction *const action, const SoPrimitiveVertex *const v1, const SoPrimitiveVertex *const v2) — two vertices this time, still void 🎀
  • void invokePointCallbacks(SoAction *const action, const SoPrimitiveVertex *const v) — one vertex, void out 🦋
  • void beginShape(SoAction *const action, const TriangleShape shapetype, SoDetail *const detail=NULL) — and yes, detail defaults to NULL, that's the default right there, don't miss it 👀
  • void shapeVertex(const SoPrimitiveVertex *const v) — const SoPrimitiveVertex *const v, returns void ✨
  • void endShape(void) — no args, no return, we love a clean exit 💅
  • void generateVertex(SoPrimitiveVertex *const pv, const SbVec3f &point, const SbBool useTexFunc, const SoMultiTextureCoordinateElement *const tce, const float s, const float t, const SbVec3f &normal) — the first overload, and it's stacked: pv, point, useTexFunc, tce, s, t, 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) — the second overload, and this one squeezes an extra const float r in there, iconic 💖
  • SbBool startVertexArray(SoGLRenderAction *action, const SoCoordinateElement *coords, const SbVec3f *pervertexnormals, const SbBool texpervertex, const SbBool colorpervertex) — action, coords, pervertexnormals, texpervertex, colorpervertex, and you get an SbBool back 👑
  • void finishVertexArray(SoGLRenderAction *action, const SbBool vbo, const SbBool normpervertex, const SbBool texpervertex, const SbBool colorpervertex) — action, vbo, normpervertex, texpervertex, colorpervertex, returns void 🔥

🦋 Protected Member Functions inherited from SoNode 🦋

  • SoNode(void) — constructor, protected 🎀
  • virtual ~SoNode() — virtual destructor ✨
  • virtual SbBool readInstance(SoInput *in, unsigned short flags) — virtual, takes an SoInput *in and unsigned short flags, returns SbBool 🌸

💖 Protected Member Functions inherited from SoFieldContainer 💖

  • SoFieldContainer(void) — constructor, protected 💜
  • virtual ~SoFieldContainer() — virtual destructor 🦋

⭐ Protected Member Functions inherited from SoBase ⭐

  • SoBase(void) — constructor, protected ✨
  • virtual ~SoBase() — virtual destructor 🎀
  • virtual void destroy(void) — virtual, returns void 💅
  • SbBool hasMultipleWriteRefs(void) const — it's const, takes nothing, returns SbBool 👑
  • SbBool writeHeader(SoOutput *out, SbBool isgroup, SbBool isengine) const — const, takes out, isgroup, isengine, returns SbBool 🌈
  • void writeFooter(SoOutput *out) const — const, takes an SoOutput *out, returns void 🌸
  • virtual const char * getFileFormatName(void) const — virtual and const, returns a const char * 💖
  • virtual SoNotRec createNotRec(void) — virtual, no args, returns an SoNotRec ✨

🌈 Static Protected Member Functions 🌈

  • static const SoFieldData ** getFieldDataPtr(void) — the static field-data getter, returns const SoFieldData ** 💫

🌟 Static Protected Member Functions inherited from SoNonIndexedShape 🌟

  • static const SoFieldData ** getFieldDataPtr(void) — same signature, different parent 💜

🫶 Static Protected Member Functions inherited from SoVertexShape 🫶

  • static const SoFieldData ** getFieldDataPtr(void) — yep, getFieldDataPtr again 🎀

💜 Static Protected Member Functions inherited from SoShape 💜

  • static const SoFieldData ** getFieldDataPtr(void) — still getFieldDataPtr, still const SoFieldData ** 🌸

✨ Static Protected Member Functions inherited from SoNode ✨

  • static const SoFieldData ** getFieldDataPtr(void) — the getter 🦋
  • static void setNextActionMethodIndex(int index) — takes an int index, returns void 👑
  • static int getNextActionMethodIndex(void) — no args, returns an int 🔥
  • static void incNextActionMethodIndex(void) — no args, returns void 💅
  • static void setCompatibilityTypes(const SoType &nodetype, const uint32_t bitmask) — takes a const SoType &nodetype and a const uint32_t bitmask, returns void 🌈

🎀 Static Protected Member Functions inherited from SoBase 🎀

  • static uint32_t getCurrentWriteCounter(void) — no args, returns a uint32_t ⭐
  • static void staticDataLock(void) — no args, returns void 💖
  • static void staticDataUnlock(void) — no args, returns void ✨

💫 Additional Inherited Members 💫

💅 Public Types inherited from SoShape 💅

  • enum TriangleShape — every shape the base class knows about: TRIANGLE_STRIP, TRIANGLE_FAN, TRIANGLES, POLYGON, QUADS, QUAD_STRIP, POINTS, LINES, LINE_STRIP 👑

🌸 Public Types inherited from SoNode 🌸

  • enum NodeType — the full flag lineup, values and all:
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 — an SbUniqueId, protected 🍓

💖 Protected Attributes inherited from SoFieldContainer 💖

  • SbBool isBuiltIn — an SbBool, protected ✨

⭐ Static Protected Attributes inherited from SoNode ⭐

  • static SbUniqueId nextUniqueId = 1 — starts at 1 💫
  • static int nextActionMethodIndex = 0 — starts at 0 🌈

👑 DETAILED DESCRIPTION 👑

The SoQuadMesh class is used to render and optimize a quadrilateral mesh. periodt.

This node uses the coordinates in order, either from the state or from the SoQuadMesh::vertexProperty node, to construct a quadrilateral mesh. no cap 🫶

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:

(imagine the slayest little quad mesh here — the real page has a picture, bestie, I'm just a text file 🦋)

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.

bestie, that's a slowdown of about 6x. gorgeous shading, but she is not cheap 💀

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]

Okay so this static method hands you back the SoType object that's associated with objects of this class. It's giving type-identity realness. ✨

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. iykyk 💅

Reimplemented from SoNonIndexedShape.

const SoFieldData ** SoQuadMesh::getFieldDataPtr (void ) [static], [protected]

Bestie, warning: this API member is considered internal to the library, as it is not likely to be of interest to the application programmer. Not me reading the internal docs anyway 🙈

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. Simple. Clean. Slay. 💖

Reimplemented from SoNonIndexedShape.

void SoQuadMesh::initClass (void ) [static]

No extra description here, bestie — it just does its static initClass thing. Still iconic tho. ✨

void SoQuadMesh::GLRender (SoGLRenderAction * action) [virtual]

Action method for the SoGLRenderAction. This is the main character moment during rendering traversals. 🌈

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. Math? In my shape node? It's more likely than you think. 🎀

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]

Heads up: this API member is considered internal to the library, as it is not likely to be of interest to the application programmer. Lowkey secret menu energy. 🙈

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().) Don't do it, bestie, they said not to. 😭

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. It's giving precise, measured, geometry queen. 👑

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. So don't come for center before it's ready, okay? 💅

Implements SoShape.

SbBool SoQuadMesh::generateDefaultNormals (SoState * state, SoNormalCache * cache) [protected], [virtual]

Internal alert: this API member is considered internal to the library, as it is not likely to be of interest to the application programmer. We're in the backstage area, besties. 🎭

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 the number of vertices in each column. Columns? Getting structured. Getting vertical. Obsessed. 💖

SoSFInt32 SoQuadMesh::verticesPerRow

Specifies the number of vertices in each row. Rows? Horizontal realness. We love a grid moment. ✨

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And that's the whole page, bestie! This was auto-generated by Doxygen for Coin straight from the source code — version 4.0.10, dated Thu Jun 25 2026 00:00:00 — and it's the SoQuadMesh(3) manual page. Periodt. 💖✨

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