SoPointSet(3)
π SoPointSet(3) π
okay bestie, welcome to the SoPointSet page β yes it's from Library Functions Manual, and yes it's a long one, so buckle up. This is part 1, more is coming, don't go anywhere. π«Ά
β¨ NAME β¨
SoPointSet β the glow-up class whose whole job is displaying a set of 3D points. that's it. that's the vibe. π
πΈ SYNOPSIS πΈ
#include <Inventor/nodes/SoPointSet.h>
Inherits SoNonIndexedShape.
Inherited by SoMarkerSet.
π Public Member Functions π
the main character energy right here:
virtual SoType getTypeId (void) const
SoPointSet (void)
virtual void GLRender (SoGLRenderAction *action)
virtual void getBoundingBox (SoGetBoundingBoxAction *action)
virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)
π Public Member Functions inherited from SoVertexShape
heirlooms from the parent, still iconic:
virtual void notify (SoNotList *nl)
virtual void write (SoWriteAction *action)
π Public Member Functions inherited from SoShape
virtual SbBool affectsState (void) const
virtual void rayPick (SoRayPickAction *action)
virtual void callback (SoCallbackAction *action)
const SoBoundingBoxCache * getBoundingBoxCache (void) const
π Public Member Functions inherited from SoNode
the whole family tree said slay:
void setOverride (const SbBool state)
SbBool isOverride (void) const
void setNodeType (const NodeType type)
NodeType getNodeType (void) const
virtual SoNode * copy (SbBool copyconnections=0) 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)
uint32_t 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
π 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=0)
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 *in)
void get (SbString &fielddata, SoOutput *out)
virtual SbBool validateNewFieldValue (SoField *field, void *newval)
virtual void addWriteReference (SoOutput *out, SbBool isfromfield=0)
SbBool getIsBuiltIn (void) const
void setUserData (void *userdata) const
void * getUserData (void) const
π Public Member Functions inherited from SoBase
the OG ancestor, no cap:
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
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
π Static Public Member Functions π
static SoType getClassTypeId (void)
static void initClass (void)
π¦ Static Public Member Functions inherited from SoNonIndexedShape
static SoType getClassTypeId (void)
static void initClass (void)
π¦ Static Public Member Functions inherited from SoVertexShape
static SoType getClassTypeId (void)
static void initClass (void)
π¦ Static Public Member Functions inherited from SoShape
static SoType getClassTypeId (void)
static void initClass (void)
static void getScreenSize (SoState *const state, const SbBox3f
&boundingbox, SbVec2s &rectsize)
static float getDecimatedComplexity (SoState *state, float complexity)
π¦ 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)
static void initClasses (void)
static uint32_t 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)
π¦ Static Public Member Functions inherited from SoFieldContainer
static void initClass (void)
static SoType getClassTypeId (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)
π¦ Static Public Member Functions inherited from SoBase
static void initClass (void)
static SoType getClassTypeId (void)
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 *in, SoBase *&base, SoType expectedtype)
static void setInstancePrefix (const SbString &c)
static void setTraceRefs (SbBool trace)
static SbBool getTraceRefs (void)
static SbBool connectRoute (SoInput *in, const SbName &fromnodename,
const SbName &fromfieldname, const SbName &tonodename, const SbName
&tofieldname)
static SbBool readRoute (SoInput *in)
π Public Attributes π
the one field that's hers:
SoSFInt32 numPoints
π§ Public Attributes inherited from SoNonIndexedShape
SoSFInt32 startIndex
π§ Public Attributes inherited from SoVertexShape
SoSFNode vertexProperty
π Protected Member Functions π
for the inner circle only (protected, so bestie, know your place π):
virtual const SoFieldData * getFieldData (void) const
virtual ~SoPointSet ()
virtual void generatePrimitives (SoAction *action)
virtual void computeBBox (SoAction *action, SbBox3f &box, SbVec3f
¢er)
virtual SbBool generateDefaultNormals (SoState *, SoNormalCache *nc)
virtual SbBool generateDefaultNormals (SoState *state, SoNormalBundle
*bundle)
π 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
π 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)
π 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 SoTextureCoordinateElement *const
tce, const float s, const float t, const SbVec3f &normal)
void generateVertex (SoPrimitiveVertex *const pv, const SbVec3f &point,
const SbBool useTexFunc, const SoTextureCoordinateElement *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)
that's the whole synopsis situation, bestie. π part 2 is coming, don't click away yet. π
π‘οΈ Protected Member Functions inherited from SoNode
The lil' family hand-me-downs from SoNode, keepin' it cozy:
SoNode(void)virtual ~SoNode()virtual SbBool readInstance(SoInput *in, unsigned short flags)
π Protected Member Functions inherited from SoFieldContainer
SoFieldContainer(void)~SoFieldContainer()
π«Ά Protected Member Functions inherited from SoBase
SoBase(void)virtual ~SoBase()virtual void destroy(void)SbBool hasMultipleWriteRefs(void) constSbBool writeHeader(SoOutput *out, SbBool isgroup, SbBool isengine) constvoid writeFooter(SoOutput *out) constvirtual const char * getFileFormatName(void) const
β¨ Static Protected Member Functions
static const SoFieldData ** getFieldDataPtr(void)
π« Static Protected Member Functions inherited from SoNonIndexedShape
static const SoFieldData ** getFieldDataPtr(void)
π« Static Protected Member Functions inherited from SoVertexShape
static const SoFieldData ** getFieldDataPtr(void)
π« Static Protected Member Functions inherited from SoShape
static const SoFieldData ** getFieldDataPtr(void)
π« 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)
π« Static Protected Member Functions inherited from SoBase
static uint32_t getCurrentWriteCounter(void)static void staticDataLock(void)static void staticDataUnlock(void)
π Additional Inherited Members
Everything else the ancestors are passing down, no gatekeeping:
π¦ Public Types inherited from SoShape
enum TriangleShape { TRIANGLE_STRIP, TRIANGLE_FAN, TRIANGLES, POLYGON, QUADS, QUAD_STRIP, POINTS, LINES, LINE_STRIP }
π¦ 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 }
πΈ Protected Types inherited from SoBase
enum BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 }
πΈ Protected Attributes inherited from SoNode
uint32_t uniqueId
πΈ Protected Attributes inherited from SoFieldContainer
SbBool isBuiltIn
πΈ Static Protected Attributes inherited from SoNode
static uint32_t nextUniqueId = 0static int nextActionMethodIndex = 0
π Detailed Description
OK bestie, here's the tea β β the SoPointSet class is used to display a set of 3D points.
This node either uses the coordinates currently on the state (typically set up by a leading SoCoordinate3 node in the scenegraph) or from a SoVertexProperty node attached to this node to render a set of 3D points. So likeβ¦ it can pull the coords from the vibe of the scene around it, or from its own lil' attached property node. Either way? Points. Many points. Slay. π
The SoPointSet::numPoints field specifies the number of points in the coordinate set which should be rendered (or otherwise handled by traversal actions). That's the count, bestie β how many of 'em we're actually putting on screen.
Here's a simple usage example of SoPointSet in a scenegraph:
#Inventor V2.1 ascii
Separator {
Material {
diffuseColor [
1 0 0, 0 1 0, 0 0 1, 1 1 0, 1 0 1, 1 1 1, 1 0.8 0.6, 0.6 0.8 1
]
}
MaterialBinding { value PER_PART }
Coordinate3 {
point [
-1 1 0, -1 -1 0, 1 -1 0, 1 1 0, 0 2 -1, -2 0 -1, 0 -2 -1, 2 0 -1
]
}
DrawStyle { pointSize 3 }
PointSet { }
}
π FILE FORMAT/DEFAULTS:
PointSet {
vertexProperty NULL
startIndex 0
numPoints -1
}
π Constructor & Destructor Documentation
π SoPointSet::SoPointSet(void)
Constructor. Yeah, it just⦠constructs. Classic.
References numPoints, and SoPointSet().
Referenced by getFieldData(), and SoPointSet().
π SoPointSet::~SoPointSet() β [protected], [virtual]
Destructor. It cleans up after itself, as one does. π
π₯ Member Function Documentation
β SoType SoPointSet::getTypeId(void) const β [virtual]
Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and "downward" casting. It's literally the "who even are you" check, bestie.
Usage example:
void foo(SoNode * node)
{
if (node->getTypeId() == SoFile::getClassTypeId()) {
SoFile * filenode = (SoFile *)node; // safe downward cast, knows the type
}
else if (node->getTypeId().isOfType(SoGroup::getClassTypeId())) {
SoGroup * group = (SoGroup *)node; // safe downward cast, knows the type
}
}
For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on. So yeah β if you're building your own extensions, you gotta override this. It's not optional. No cap.
For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups.
Reimplemented from SoNonIndexedShape.
Reimplemented in SoMarkerSet.
β const SoFieldData * SoPointSet::getFieldData(void) const β [protected], [virtual]
Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL. Fr fr, that's the whole thing.
Reimplemented from SoNonIndexedShape.
Reimplemented in SoMarkerSet.
References SoPointSet().
β void SoPointSet::GLRender(SoGLRenderAction * action) β [virtual]
Action method for the SoGLRenderAction.
This is called during rendering traversals. Nodes influencing the rendering state in any way or who wants to throw geometry primitives at OpenGL overrides this method. So this is the "actually draw the thing" moment β the main character energy of the whole class. π¬
Reimplemented from SoShape.
Reimplemented in SoMarkerSet.
References SoShape::finishVertexArray(), SoGLRenderAction::getCacheContext(), SoAction::getState(), SoVertexShape::getVertexData(), numPoints, SoState::pop(), SoState::push(), SoVertexShape::shouldGLRender(), SoNonIndexedShape::startIndex, SoShape::startVertexArray(), and SoVertexShape::vertexProperty.
β void SoPointSet::getBoundingBox(SoGetBoundingBoxAction * action) β [virtual]
Action method for the SoGetBoundingBoxAction.
Calculates bounding box and center coordinates for node and modifies the values of the action to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node. Basically it's telling the action "hey, I live here, and my center is there."
Nodes influencing how geometry nodes calculates their bounding box also overrides this method to change the relevant state variables.
Reimplemented from SoShape.
References SoNode::getBoundingBox().
β void SoPointSet::getPrimitiveCount(SoGetPrimitiveCountAction * action) β [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. Counting the little guys. π
Nodes influencing how geometry nodes calculates their primitive count also overrides this method to change the relevant state variables.
Reimplemented from SoShape.
Reimplemented in SoMarkerSet.
References SoGetPrimitiveCountAction::addNumPoints(), SoMField::getNum(), SoAction::getState(), SoBase::isOfType(), numPoints, SoShape::shouldPrimitiveCount(), SoNonIndexedShape::startIndex, SoVertexProperty::vertex, and SoVertexShape::vertexProperty.
β void SoPointSet::generatePrimitives(SoAction * action) β [protected], [virtual]
The method implements action behavior for shape nodes for SoCallbackAction. It is invoked from SoShape::callback(). (Subclasses should not override SoNode::callback().) So don't be a rebel about it, okay? π
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.
References SoShape::beginShape(), SoShape::endShape(), SoAction::getState(), SoVertexShape::getVertexData(), numPoints, SoState::pop(), SoState::push(), SoPointDetail::setCoordinateIndex(), SoPrimitiveVertex::setDetail(), SoPointDetail::setMaterialIndex(), SoPrimitiveVertex::setMaterialIndex(), SoPrimitiveVertex::setNormal(), SoPointDetail::setNormalIndex(), SoPrimitiveVertex::setPoint(), SoPointDetail::setTextureCoordIndex(), SoPrimitiveVertex::setTextureCoords(), SoShape::shapeVertex(), SoNonIndexedShape::startIndex, and SoVertexShape::vertexProperty.
β void SoPointSet::computeBBox(SoAction * action, SbBox3f & box, SbVec3f & center) β [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().) Same energy as before β let the shape superclass do the bossing around. π
The box parameter sent in is guaranteed to be an empty box, while center is undefined upon function entry.
Implements SoShape.
References SoNonIndexedShape::computeCoordBBox(), and numPoints.
β SbBool SoPointSet::generateDefaultNormals(SoState * state, SoNormalCache * cache) β [protected], [virtual]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer. So likeβ¦ if you're just an app dev, this one's not for you, bestie, and that's okay. π«Ά
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.
β SbBool SoPointSet::generateDefaultNormals(SoState * state, SoNormalBundle * bundle) β [protected], [virtual]
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer. Yeah, same disclaimer, this is internal-business only.
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.
π Member Data Documentation π
πΈ SoSFInt32 SoPointSet::numPoints πΈ
okay bestie, THIS is the field. the moment. the main character of the whole point set πβ¨
- what it does β it tells the point set how many points are in it, periodt. and where do the coordinates for those points come from? not from this field, bestie β they get pulled off the state stack's set of 3D coordinates, which is typically set up by a leading
SoCoordinate3node. so like,SoCoordinate3does the coordinates,numPointsjust says how many of them we're using π - the
-1situation β if this field equals-1(which is the default value, iykyk), then all the coordinates currently hanging out on the state get rendered, or otherwise handled, by traversal actions. so-1is basically the "use everything, no thoughts, head empty" mode π
π¨ okay quick lore drop, don't skip this one π¨
SoPointSet inherits the field SoNonIndexedShape::startIndex, and that one specifies the start index for points from the current state set of coordinates. BUT β and this is the important part β that field has been obsoleted. it's still provided for compatibility, so it's not gone, but likeβ¦ it's giving legacy. it's giving "we keep it around for the old code, not because we love it" π
π referenced by
this field gets referenced all over the place, no cap β here's the whole squad:
computeBBox()generatePrimitives()SoMarkerSet::getPrimitiveCount()getPrimitiveCount()SoMarkerSet::GLRender()GLRender()SoPointSet()
look at that list. numPoints is literally everywhere. popular girl energy fr fr π¦
βοΈ Author βοΈ
Generated automatically by Doxygen for Coin from the source code. π€ so yeah, no human author to thank here β the robot did it, and honestly? it ate π
and that's a wrap on SoPointSet(3) bestie!! π this gorgeous little page comes from Coin, Version 2.5.0, and it's the SoPointSet(3) manual page β so go forth, set your numPoints, and slay your coordinates πβ¨πΈπ«Ά
π¦ where this page comes from
- fedora 43: Coin2-devel 2.5.0-52.fc43 Β· GPL-2.0-only
- fedora 43: Coin2-devel 2.5.0-52.fc43 Β· GPL-2.0-only
- fedora 44: Coin2-devel 2.5.0-54.fc44 Β· GPL-2.0-only
- fedora 44: Coin2-devel 2.5.0-54.fc44 Β· GPL-2.0-only
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash on : a language model's rewrite of the original, under its terms