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Open Inventor Release 2024.2.0
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Open Inventor Release 2024.2.0
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Abstract base class for slice shape nodes.
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#include <VolumeViz/nodes/SoSlice.h>
Inheritance diagram for SoSlice:Public Types | |
| enum | AlphaUse { ALPHA_AS_IS , ALPHA_OPAQUE , ALPHA_BINARY } |
| Alpha component usage mode Used in the alphaUse field. More... | |
| Public Types inherited from SoVolumeShape | |
| enum | Interpolation { NEAREST , LINEAR , TRILINEAR , MULTISAMPLE_12 , CUBIC } |
| Interpolation mode. More... | |
| enum | Composition { MAX_INTENSITY = 0 , MIN_INTENSITY , SUM_INTENSITY , ALPHA_BLENDING , COMPOSITION_LAST } |
| Composition mode. More... | |
| 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... | |
Public Member Functions | |
| virtual SoType | getTypeId () const |
| Returns the type identifier for this specific instance. | |
| Public Member Functions inherited from SoVolumeShape | |
| 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. | |
| 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 SoVolumeShape | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| Static Public Member Functions inherited from SoLdmShape | |
| 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 | enableBumpMapping |
| Specifies if a bump mapping effect will be applied to the slice. | |
| SoSFFloat | bumpScale |
| Specifies the intensity of the bump mapping effect. | |
| SoSFNode | alternateRep |
| This field optionally holds a subgraph containing only core Open Inventor nodes that can be used for rendering when VolumeViz is not available. | |
| SoSFEnum | alphaUse |
| Specifies how to use the alpha component of each voxel's RGBA value. | |
| SoSFBool | useRGBA |
| Specifies whether to create RGBA textures. | |
| SoSFBool | largeSliceSupport |
| Activate/deactivate direct loading of full resolution slice data. | |
| Public Attributes inherited from SoVolumeShape | |
| SoSFEnum | interpolation |
| Interpolation mode. | |
| SoDEPRECATED SoSFEnum | composition |
| Specifies color composition mode. | |
| Public Attributes inherited from SoShape | |
| SoSFBool | boundingBoxIgnoring |
| Whether to ignore this node during bounding box traversal. | |
Abstract base class for slice shape nodes.
This class defines common properties for the SoOrthoSlice, SoObliqueSlice, SoFenceSlice, SoVolumeSkin and SoHeightFieldRender nodes.
The alphaUse field controls how the voxel's alpha component is used when drawing the slice.
The enableBumpMapping and bumpScale fields control a rendering effect called bump mapping that simulates displacement of the slice surface using the gradient vectors (computed on the GPU) as normal vectors.
The largeSliceSupport field enables direct loading of full resolution slice data from the volume reader, without (necessarily) loading complete tiles.
| enum SoSlice::AlphaUse |
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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 SoVolumeShape.
Reimplemented in ObliqueSliceBorder, OrthoSliceBorder, SoFenceSlice, SoHeightFieldRender, SoObliqueSlice, SoOrthoSlice, and SoVolumeSkin.
| SoSFEnum SoSlice::alphaUse |
Specifies how to use the alpha component of each voxel's RGBA value.
Use enum AlphaUse. Default is ALPHA_OPAQUE.
Compatibility Note: The default value changed with the release of Open Inventor version 10. In previous versions the default value was ALPHA_BINARY.
The alpha component will typically come from the transfer function, but (since Open Inventor 8.5) could come from direct rendering of an RGBA volume. The alpha values used for rendering the slice will vary depending on the value of this field.
The following table shows how the alpha value is computed according to this field and the incoming voxel alpha values:
| When alphaUse field is: | ALPHA_BINARY | ALPHA_OPAQUE | ALPHA_AS_IS |
| Incoming Alpha value | Alpha Value Actually Used | ||
| = 0 | 0 (Invisible) | 1 (Opaque) | 0 (Invisible) |
| > 0 | 1 (Opaque) | 1 (Opaque) | same as incoming |
Note that this field only affects alpha values coming from the transfer function or an RGBA volume. Global transparency assigned by an SoMaterial node is not affected.
| SoSFNode SoSlice::alternateRep |
This field optionally holds a subgraph containing only core Open Inventor nodes that can be used for rendering when VolumeViz is not available.
For example, the alternate representation for an SoOrthoSlice could be a small scene graph containing an SoTexture2 and an SoIndexedFaceSet. Such a scene graph could be converted and exported as a PDF3D file. Default is NULL. But an alternateRep scene graph is automatically created during a write action if SoVolumeRendering::setWriteAlternateRep(TRUE) was called.
| SoSFFloat SoSlice::bumpScale |
Specifies the intensity of the bump mapping effect.
Default value is 1.0. Valid values range from 0 (no bump mapping) to no upper limit. (50 is a fairly large value.)
| SoSFBool SoSlice::enableBumpMapping |
Specifies if a bump mapping effect will be applied to the slice.
Default is FALSE. Bump mapping is a rendering effect that simulates displacement of the slice surface using the gradient vectors (computed on the GPU) as normal vectors. Normally lighting should be enabled to maximize the visual effect of bump mapping.
This mode requires a graphics card supporting the OpenGL GLSL shading language. If your graphics card does not have the necessary support, the slice will be rendered without bump mapping.
Bump mapping is not available for the SoHeightFieldRender node.
| SoSFBool SoSlice::largeSliceSupport |
Activate/deactivate direct loading of full resolution slice data.
Default is FALSE. When TRUE, if all the required full resolution tiles have already been loaded, then the slice data is taken from LDM system memory cache as usual. But if some required tiles are not currently in memory, the required slice data will be loaded directly from the volume reader without loading the complete tiles. This reduces disk I/O and reduces the amount of system memory required to display the slice at full resolution, so larger (or more) slices can be displayed. The required tiles are then scheduled to be loaded asynchronously in case adjacent slices are displayed later. For example, loading a 1024x1024 SoOrthoSlice from an 8-bit dataset with 128x128x128 tiles would normally require loading 1024x1024x128 bytes of data (as complete tiles). With largeSliceSupport enabled, only 1024x1024 bytes (maximum) of data need to be loaded (in the worst case where no high resolution data is currently in memory).
NOTE: field available since Open Inventor 8.0
Limitations :
| SoSFBool SoSlice::useRGBA |
Specifies whether to create RGBA textures.
Default is FALSE. If useRGBA is FALSE, indexed textures will be used if the graphics board supports them. If useRGBA is TRUE, RGBA textures will be used instead of indexed textures. RGBA textures allow higher precision but are slower to load and use more texture memory.
NOTE: If the dataSet is RGBA then this field is ignored and RGBA textures are used.
1.9.8 