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Open Inventor Release 2024.2.1
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Open Inventor Release 2024.2.1
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Polygonal face shape node. More...
#include <Inventor/nodes/SoFaceSet.h>
Inheritance diagram for SoFaceSet:Public Member Functions | |
| virtual SoType | getTypeId () const |
| Returns the type identifier for this specific instance. | |
| SoFaceSet () | |
| Creates a face set node with default settings. | |
| Public Member Functions inherited from SoVertexShape | |
| SoNormalCache * | getNormalCache () const |
| Returns the current normal cache, or NULL if there is none. | |
| SoTangentCache * | getTangentCache () const |
| Returns the current tangent cache, or NULL if there is none. | |
| Public Member Functions inherited from SoShape | |
| virtual SbBool | affectsState () const |
| Overrides default method on SoNode. | |
| ShapeType | getShapeType () |
| Gets the current shape Full Scene Antialiasing type. | |
| Public Member Functions inherited from SoNode | |
| virtual void | setOverride (const SbBool state) |
| Turns the override flag on or off. | |
| virtual SbBool | isOverride () const |
| Returns the state of the override flag. | |
| virtual SoNode * | copy (SbBool copyConnections=FALSE) const |
| Creates and returns an exact copy of the node. | |
| virtual void | touch () |
| Marks an instance as modified, simulating a change to it. | |
| Public Member Functions inherited from SoFieldContainer | |
| void | setToDefaults () |
| Sets all fields in this object to their default values. | |
| SbBool | hasDefaultValues () const |
| Returns TRUE if all of the object's fields have their default values. | |
| SbBool | fieldsAreEqual (const SoFieldContainer *fc) const |
| Returns TRUE if this object's fields are exactly equal to fc's fields. | |
| void | copyFieldValues (const SoFieldContainer *fc, SbBool copyConnections=FALSE) |
| Copies the contents of fc's fields into this object's fields. | |
| SoNONUNICODE SbBool | set (const char *fieldDataString) |
| Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. | |
| SbBool | set (const SbString &fieldDataString) |
| Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. | |
| void | get (SbString &fieldDataString) |
| Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string. | |
| virtual int | getFields (SoFieldList &list) const |
| Appends references to all of this object's fields to resultList, and returns the number of fields appended. | |
| virtual int | getAllFields (SoFieldList &list) const |
| Returns a list of fields, including the eventIn's and eventOut's. | |
| virtual SoField * | getField (const SbName &fieldName) const |
| Returns a the field of this object whose name is fieldName. | |
| virtual SoField * | getEventIn (const SbName &fieldName) const |
| Returns a the eventIn with the given name. | |
| virtual SoField * | getEventOut (const SbName &fieldName) const |
| Returns the eventOut with the given name. | |
| SbBool | getFieldName (const SoField *field, SbName &fieldName) const |
| Returns the name of the given field in the fieldName argument. | |
| SbBool | enableNotify (SbBool flag) |
| Notification at this Field Container is enabled (if flag == TRUE) or disabled (if flag == FALSE). | |
| SbBool | isNotifyEnabled () const |
| Notification is the process of telling interested objects that this object has changed. | |
| virtual void | setUserData (void *data) |
| Sets application data. | |
| void * | getUserData (void) const |
| Gets user application data. | |
| Public Member Functions inherited from SoBase | |
| virtual SbName | getName () const |
| Returns the name of an instance. | |
| virtual void | setName (const SbName &name) |
| Sets the name of an instance. | |
| void | setSynchronizable (const bool b) |
| Sets this to be a ScaleViz synchronizable object. | |
| bool | isSynchronizable () const |
| Gets the ScaleViz synchronizable state of this object. | |
| Public Member Functions inherited from SoRefCounter | |
| void | ref () const |
| Adds a reference to an instance. | |
| void | unref () const |
| Removes a reference from an instance. | |
| void | unrefNoDelete () const |
| unrefNoDelete() should be called when it is desired to decrement the reference count, but not delete the instance if this brings the reference count to zero. | |
| int | getRefCount () const |
| Returns current reference count. | |
| void | lock () const |
| lock this instance. | |
| void | unlock () const |
| unlock this instance. | |
| Public Member Functions inherited from SoTypedObject | |
| SbBool | isOfType (const SoType &type) const |
| Returns TRUE if this object is of the type specified in type or is derived from that type. | |
| template<typename TypedObjectClass > | |
| SbBool | isOfType () const |
| Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class. | |
Static Public Member Functions | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| Static Public Member Functions inherited from SoNonIndexedShape | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| Static Public Member Functions inherited from SoVertexShape | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| Static Public Member Functions inherited from SoShape | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| static SbBool | isPrimitiveRestartAvailable (SoState *state=NULL) |
| Returns TRUE if the primitive restart feature is available. | |
| Static Public Member Functions inherited from SoNode | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| static SoNode * | getByName (const SbName &name) |
| A node's name can be set using SoBase::setName(). | |
| static int | getByName (const SbName &name, SoNodeList &list) |
| A node's name can be set using SoBase::setName(). | |
| Static Public Member Functions inherited from SoFieldContainer | |
| static SoType | getClassTypeId () |
| Returns the type of this class. | |
| Static Public Member Functions inherited from SoBase | |
| static SoType | getClassTypeId () |
| Returns type identifier for this class. | |
| Static Public Member Functions inherited from SoTypedObject | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
Public Attributes | |
| SoMFInt32 | numVertices |
| Number of vertices per face or per contour. | |
| Public Attributes inherited from SoNonIndexedShape | |
| SoSFInt32 | startIndex |
| Index of first coordinate of shape. | |
| Public Attributes inherited from SoVertexShape | |
| SoSFNode | vertexProperty |
| vertex property node. | |
| Public Attributes inherited from SoShape | |
| SoSFBool | boundingBoxIgnoring |
| Whether to ignore this node during bounding box traversal. | |
Additional Inherited Members | |
| Public Types inherited from SoShape | |
| enum | ShapeType { POINTS , LINES , POLYGONS , TEXT } |
| Basic type for antialiased rendering for this shape (Do not consider the SoDrawStyle property currently in the state). More... | |
Polygonal face shape node.
This node represents a 3D shape formed by constructing faces (polygons) from vertices located at the coordinates specified in the vertexProperty field (from SoVertexShape), or the current inherited state. For optimal performance, the vertexProperty field is recommended.
Coordinates are used in order, starting with startIndex (zero by default).
If the first value in the numVertices field is -1 (the default), then all the coordinates (starting with startIndex) are rendered as a single face.
Otherwise each face uses the number of vertices specified by a value in the numVertices field. For example, an SoFaceSet with a numVertices of [3,4,4] would use the first three coordinates for the first face, the next four coordinates for the second face, and the next four coordinates for the third face. Thus the number of values in the numVertices field indicates the number of faces in the set.
SoFaceSet should only be used to render faces with 3 or more vertices. Otherwise the result is undefined. For example, do not set values in the numVertices field to 0, 1 or 2. To render lines or points, use SoLineSet or SoPointSet respectively.
SoFaceSet is a general purpose polygon rendering node. It can render triangles, quadrilaterals, and other types of polygons or any combination thereof. However:
SoFaceSet supports both convex and non-convex polygons (unlike OpenGL). However polygons are assumed to be convex by default. Rendering non-convex polygons in this mode may produce incorrect results. Enable non-convex polygons using the faceType field of an SoShapeHints node. In this mode SoFaceSet will automatically convert non-convex polygons, if necessary, to faces that the hardware can handle.
SoFaceSet can also directly handle complex polygons with "holes" (interior boundaries). See the following paragraphs.
If SoShapeHints is not used, or if the SoShapeHints::windingType field is equal to NO_WINDING_TYPE, SoFaceSet defines a set of faces. It uses the coordinates in order, starting with startIndex. Each face has a number of vertices specified by a value in the numVertices field. For example, an SoFaceSet with numVertices of [3,4,4] would use coordinates 1, 2, and 3 for the first face, coordinates 4, 5, 6, and 7 for the second face, and coordinates 8, 9, 10, and 11 for the third. The number of values in the numVertices field indicates the number of faces in the set. The default value (-1) means to use all the coordinates to define a single face.
If SoShapeHints is used with a SoShapeHints::windingType field is different from NO_WINDING_TYPE, SoFaceSet defines a complex (multi-contour) face. It uses the coordinates in order, starting with the first one. Each contour has a number of vertices specified by a value in the numVertices field. For example, an SoFaceSet with numVertices of [3,4,4] would use coordinates 1, 2, and 3 for the first contour, coordinates 4, 5, 6, and 7 for the second contour, and coordinates 8, 9, 10, and 11 for the third. The number of values in the numVertices field indicates the number of contours in the complex face.
The coordinates of the face set are transformed by the current cumulative transformation. The faces are drawn with the current light model and drawing style (SoDrawStyle). Diffuse color and opacity may be specified using the orderedRGBA field of SoVertexProperty. Diffuse color, transparency and other color parameters used in the lighting equation may be specified using SoMaterial.
Treatment of the current material and normal binding is as follows: The PER_PART and PER_FACE bindings specify a material or normal for each face. The _INDEXED bindings are equivalent to their non-indexed counterparts. The default material binding is OVERALL. The default normal binding is PER_VERTEX.
If any normals (or materials) are specified, Open Inventor assumes you provide the correct number of them, as indicated by the binding. You will see unexpected results if you specify fewer normals (or materials) than the shape requires.
Lighting is enabled by default (see SoLightModel). If lighting is enabled, by default only the "front face" of polygons are lit (the back face will be black). Which side is the front face is determined by the normal vector, if specified, else by the ordering of the vertices and the vertexOrdering field of SoShapeHints. You can also enable "two sided lighting" using SoShapeHints.
If lighting is enabled and no normals were specified, they will be computed automatically. The normal generator computes "facet" or "smooth" (or a combination) normal vectors depending on the creaseAngle field of SoShapeHints.
Textures may be applied using (for example) SoTexture2. Texture coordinates may be supplied using SoVertexProperty or SoTextureCoordinate2. If a texture is applied and no texture coordinates were specified, they will be computed automatically. By default the computed coordinates map the texture to the axis-aligned bounding box of the shape, with the texture S axis corresponding to the longest axis of the box.
Warning: A face set may not render or pick correctly if any of its polygons are self-intersecting or non-planar.
Limitations:
| vertexProperty | NULL |
| startIndex | 0 |
| numVertices | -1 |
SoRayPickAction
Picks faces based on the current coordinates and transformation. Details about the intersection are returned in an SoFaceDetail.
SoGetBoundingBoxAction
Computes the bounding box that encloses all vertices of the face set with the current transformation applied to them. Sets the center to the average of the coordinates of all vertices.
SoCallbackAction
If any triangle callbacks are registered with the action, they will be invoked for each successive triangle generated from each face in the set.
SoCoordinate3, SoDrawStyle, SoFaceDetail, SoFullSceneAntialiasing, SoIndexedFaceSet, SoShapeHints, SoTriangleSet, SoVertexProperty
Definition at line 228 of file SoFaceSet.h.
| SoFaceSet::SoFaceSet | ( | ) |
Creates a face set node with default settings.
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static |
Returns the type identifier for this class.
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virtual |
Returns the type identifier for this specific instance.
Reimplemented from SoNonIndexedShape.
Reimplemented in SoVolumeFaceSet.
| SoMFInt32 SoFaceSet::numVertices |
Number of vertices per face or per contour.
Definition at line 238 of file SoFaceSet.h.
1.9.8 