Polygonal face shape node for volume data. More...
#include <VolumeViz/nodes/SoVolumeFaceSet.h>
Public Member Functions | |
virtual SoType | getTypeId () const |
Returns the type identifier for this specific instance. | |
SoVolumeFaceSet () | |
Constructor. | |
Public Member Functions inherited from SoFaceSet | |
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. | |
Public Member Functions inherited from SoVolumeGeometry | |
SoVolumeGeometry () | |
Constructor. | |
virtual | ~SoVolumeGeometry () |
Destructor. | |
virtual void | setRenderProgress (SoProgressIndicator *ps) |
Set an application defined SoProgressIndicator object which will raise an event before and after the rendering task, before and after each subtask (in this case: Texture creation and Geometry creation) and after each step in the subtasks which represents in most cases individual tiles of data. | |
Static Public Member Functions | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
Static Public Member Functions inherited from SoFaceSet | |
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 | |
SoSFBool | clipGeometry |
Specifies to clip the geometry at the volume boundaries. | |
SoSFFloat | offset |
Sets an offset value used for computing the texture coordinates. | |
SoSFEnum | interpolation |
Interpolation mode. | |
Public Attributes inherited from SoFaceSet | |
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. | |
Deprecated | |
enum | Interpolation { NEAREST = SoVolumeShape::NEAREST , LINEAR = SoVolumeShape::LINEAR } |
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 for volume data.
This node defines a shape which is the intersection of the volume data defined by an SoVolumeData node and the 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, use of the vertexProperty field is recommended.
The shape defined by this intersection is textured using the data from the current SoVolumeData node and SoTransferFunction node. The interpolation field controls how the texture is interpolated. Texture coordinates are automatically computed for each vertex based on its position relative to the 3D extent of the volume. If texture coordinates are specified, they are ignored.
This node can be used to create custom "slices" through the volume, for example a cylinder slice. It can be considered a generalization of the SoOrthoSlice, SoObliqueSlice, SoFenceSlice, etc features. But note:
When set to FALSE, the clipGeometry field allows rendering of the portion of the geometry that does not intersect the volume data. This portion is not textured and is rendered as a regular SoFaceSet.
This node uses 3D texturing and is not available if the hardware does not support this feature.
SoVolumeFaceSet uses the coordinates in order, starting with the first one. Each face has a number of vertices specified by a value in the numVertices field. For example, an SoVolumeFaceSet 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. For improved performance, arrange all the faces with only 3 vertices at the beginning of the list, then all faces with 4 vertices, and finally all other faces.
The number of values in the numVertices field indicates the number of faces in the set.
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.
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 have provided 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. If no normals are specified, they will be generated automatically.
Notes:
vertexProperty | NULL |
startIndex | 0 |
numVertices | -1 |
clipGeometry | TRUE |
offset | 0 |
interpolation | LINEAR |
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.
SoVolumeData, SoTransferFunction, SoROI, SoCoordinate3, SoDrawStyle, SoVolumeIndexedFaceSet, SoVolumeIndexedTriangleStripSet, SoVolumeTriangleStripSet, SoFaceDetail, SoVertexProperty
Definition at line 179 of file SoVolumeFaceSet.h.
Enumerator | |
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NEAREST | OpenGL "nearest neighbor" interpolation. |
LINEAR | OpenGL linear interpolation (Default). This implies bi-linear interpolation for 2D textures (e.g. SoOrthoSlice, SoObliqueSlice, SoVolumeSkin, SoFenceSlice) and tri-linear interpolation for 3D textures (SoVolumeRender, SoVolumeGeometry). |
Definition at line 214 of file SoVolumeFaceSet.h.
SoVolumeFaceSet::SoVolumeFaceSet | ( | ) |
Constructor.
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static |
Returns the type identifier for this class.
|
virtual |
Returns the type identifier for this specific instance.
Reimplemented from SoFaceSet.
SoSFBool SoVolumeFaceSet::clipGeometry |
Specifies to clip the geometry at the volume boundaries.
The SoROI node also affects the clipping process. Default is TRUE.
Definition at line 192 of file SoVolumeFaceSet.h.
SoSFEnum SoVolumeFaceSet::interpolation |
Interpolation mode.
Use enum SoVolumeShape::Interpolation. Default is LINEAR. NOTE: In most cases on modern graphics boards, indexed textures are used, so this refers to interpolation of volume data values.
Definition at line 210 of file SoVolumeFaceSet.h.
SoSFFloat SoVolumeFaceSet::offset |
Sets an offset value used for computing the texture coordinates.
The texture coordinate for each vertex will be taken from a point offset units away from the vertex. The offset is measured in the direction of the vertex normal. By default the offset is equal to 0 (no offset). When using this feature, a vertex normal must exist for every vertex. If vertex normals are not supplied, Open Inventor will compute vertex normals in the usual way except that the crease angle will be fixed at PI in order to assure that a vertex normal is computed at every vertex.
Definition at line 205 of file SoVolumeFaceSet.h.