A halo highlight style. More...
#include <Inventor/actions/SoHaloHighlightRenderAction.h>
Public Member Functions | |
virtual SoType | getTypeId () const |
Returns the type identifier for this specific instance. | |
SoHaloHighlightRenderAction () | |
SoHaloHighlightRenderAction (const SbViewportRegion &viewportRegion) | |
virtual | ~SoHaloHighlightRenderAction () |
void | setHaloColor (const SbColor &color) |
Defines the color of the highlight. | |
const SbColor & | getHaloColor () const |
See setHaloColor() | |
void | setHaloWidth (int width) |
Defines the width of the halo in pixels. | |
int | getHaloWidth () const |
See setHaloWidth() | |
void | setHaloAlwaysVisible (bool alwaysVisible) |
Defines whether or not the halo can be seen through objects that are placed in front of selected shapes. | |
bool | isHaloAlwaysVisible () const |
See setHaloAlwaysVisible() | |
void | setHaloSmoothFactor (float smoothFactor) |
Defines the amount of alpha attenuation of the halo contour. | |
float | getHaloSmoothFactor () const |
See setHaloSmoothFactor() | |
Public Member Functions inherited from SoHighlightRenderAction | |
virtual void | clearApplyResult () |
When applied, an action may reference nodes or create objects (e.g. | |
virtual void | apply (SoNode *node) |
This renders the passed scene graph, and also renders highlighted selected objects as specified by the first SoSelection node found in the scene graph. | |
void | setVisible (SbBool b) |
This provides a convenient mechanism for turning highlights off or on. | |
SbBool | isVisible () const |
Returns whether highlights will be rendered or not. | |
Public Member Functions inherited from SoGLRenderAction | |
SoGLRenderAction (const SbViewportRegion &viewportRegion) | |
Constructor. | |
void | setViewportRegion (const SbViewportRegion &newRegion) |
Changes viewport region to use for rendering. | |
const SbViewportRegion & | getViewportRegion () const |
Returns viewport region to use for rendering. | |
void | setLogicalViewportRegion (const SbViewportRegion &newLogicalRegion) |
Sets current logical viewport region to use for rendering. | |
const SbViewportRegion & | getLogicalViewportRegion () const |
Returns current logical viewport region. | |
void | setUpdateArea (const SbVec2f &origin, const SbVec2f &size) |
Sets the current update area, which is the rectangular area of the viewport region that will actually be rendered into. | |
void | getUpdateArea (SbVec2f &origin, SbVec2f &size) const |
Returns the current update area. | |
void | setAbortCallback (SoGLRenderAbortCB *func, void *userData) |
Sets callback to call during rendering to test for an abort condition. | |
void | setTransparencyType (TransparencyType type) |
Sets global transparency algorithm to use when rendering. | |
TransparencyType | getTransparencyType () const |
Returns transparency quality level to use when rendering. | |
void | setFastEditSavePolicy (FastEditSavePolicy policy, SbBool fastEditDelayedObjects=FALSE) |
Sets fast editing save policy to use when rendering. | |
FastEditSavePolicy | getFastEditSavePolicy () const |
Returns fast editing save policy used when rendering. | |
SoDEPRECATED void | setSmoothing (SbBool smooth) |
Sets smoothing flag. | |
SoDEPRECATED SbBool | isSmoothing () const |
Returns smoothing flag. | |
void | setNumPasses (int num) |
Sets number of rendering passes for multipass antialiasing. | |
int | getNumPasses () const |
Gets number of rendering passes for multipass rendering. | |
void | setPassUpdate (SbBool flag) |
Sets a flag indicating whether intermediate results are displayed after each antialiasing pass for progressive improvement (default is FALSE). | |
SbBool | isPassUpdate () const |
Returns a flag indicating whether intermediate results are displayed after each antialiasing pass for progressive improvement. | |
void | setPassCallback (SoGLRenderPassCB *func, void *userData) |
Sets a callback function to invoke between passes when antialiasing. | |
void | setCacheContext (uint32_t context) |
Sets the OpenGL cache context. | |
uint32_t | getCacheContext () const |
Returns the OpenGL cache context id for this action. | |
void | setSortedLayersNumPasses (int num) |
Sets the number of rendering passes used when transparency type is SORTED_PIXEL. | |
int | getSortedLayersNumPasses () const |
Returns the number of rendering passes used when transparency type is SORTED_PIXEL. | |
void | setAlphaTest (SbBool flag) |
Enable or disable the OpenGL alpha test for rendering. | |
SbBool | isAlphaTest () const |
Returns whether the OpenGL alpha test is enabled for rendering. | |
void | setRenderingIsRemote (SbBool flag) |
Sets whether or not "remote" rendering is done. | |
SbBool | getRenderingIsRemote () const |
Returns TRUE if remote rendering is being done. | |
virtual void | invalidateState () |
Invalidate the state, forcing it to be recreated at the next apply. | |
void | setDecimationValue (SoDecimationTypeElement::Type type, float percentage=1.0) |
Sets decimation percentage, the value should be a number between 0.0 and 1.0 Useful for reducing the number of triangles rendered in the scene. | |
SoDecimationTypeElement::Type | getDecimationType () |
Gets decimation type. | |
float | getDecimationPercentage () |
Gets decimation percentage, the value should be a number between 0.0 and 1.0. | |
void | setInvalidateCacheMode (InvalidateCacheMode icm) |
Enables or disables the invalidation of render caches. | |
InvalidateCacheMode | getInvalidateCacheMode () |
Returns the current cache invalidation mode. | |
uint32_t | getFrameCounter () const |
Returns the current frame counter. | |
void | resetFrameCounter (uint32_t count=0) |
Reset the frame counter. | |
virtual void | apply (SoPath *path) |
Initiates an action on the graph defined by a path. | |
virtual void | apply (const SoPathList &pathList, SbBool obeysRules=FALSE) |
Initiates an action on the graph defined by a list of paths. | |
void | shouldAutoCache (AutoCacheMode mode) |
Called by nodes to say that they should/shouldn't be auto-cached (pass TRUE if should, FALSE if shouldn't, don't call this method at all if the node doesn't care): | |
Public Member Functions inherited from SoAction | |
virtual | ~SoAction () |
Destructor. | |
void | stopActionInBranch () |
This function stops the action in the current Scene Graph branch. | |
SbBool | getContinueActionInBranchFlag () const |
This function indicates if the action must stop in the current branch. | |
void | resetContinueActionInBranchFlag () |
This function resets the continue action flag. | |
void | useAlternateRep (const SbBool enable) |
Tell the action to use alternate representations during traversal when available. | |
SbBool | isUsingAlternateRep () const |
Returns TRUE if current action is using alternate representations. | |
void | setSceneManager (SoSceneManager *mgr) |
Set the scene manager associated with this action (if any ). | |
SoSceneManager * | getSceneManager () const |
Return the SoSceneManager associated with this action. | |
virtual void | forwardTraversal (SoNode *node) |
Traverse a node that is not part of the current scenegraph. | |
virtual void | forwardTraversal (SoPath *path) |
Traverse a path that is not part of the current scenegraph. | |
DistribMode | getDistribMode () const |
Returns the distribution mode of this action across a cluster (ScaleViz-Cluster only). | |
AppliedCode | getWhatAppliedTo () const |
Returns code indicating what action is being applied to. | |
SoNode * | getNodeAppliedTo () const |
Returns the node the action is being applied to. | |
SoPath * | getPathAppliedTo () const |
Returns the path the action is being applied to. | |
const SoPathList * | getPathListAppliedTo () const |
Returns the path list the action is being applied to. | |
const SoPathList * | getOriginalPathListAppliedTo () const |
Returns the original path list the action is being applied to. | |
SbBool | isLastPathListAppliedTo () const |
Returns TRUE if the current list is the last one from the original. | |
PathCode | getPathCode (int &numIndices, const int *&indices) |
Returns path code based on where current node (the node at the end of the current path) lies with respect to the path(s) the action is being applied to. | |
PathCode | getPathCodeMI (int &numIndices, const int *&indices, const int *&instanceIndices) |
Extender API: available to programmers who wish to extend the toolkit | |
void | traverse (SoNode *node) |
Does traversal of a graph rooted by a node. | |
SbBool | hasTerminated () const |
Returns TRUE if the traversal has reached a termination condition. | |
const SoPath * | getCurPath () |
Returns the path accumulated during traversal, i.e., the chain of nodes from the root of the traversed graph to the current node being traversed. | |
SoState * | getState () const |
Gets the state from the action. | |
void | setPipeId (int id) |
Sets pipe identifier in the range [1..N] associated to this render action while running a ScaleViz Multipipe configuration. | |
int | getPipeId () const |
Gets pipe identifier in the range [1..N] associated to this render action while running a ScaleViz Multipipe configuration. | |
bool | isBeingApplied () |
Returns TRUE if this action is currently being applied. | |
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 void | initClass () |
static void | exitClass () |
Static Public Member Functions inherited from SoHighlightRenderAction | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
Static Public Member Functions inherited from SoGLRenderAction | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
static uint32_t | generateCacheContext () |
Generates and returns a new cache context id. | |
static bool | isUsedCacheContext (uint32_t context) |
Returns TRUE if the specified cache context id is currently used by any SoGLRenderAction. | |
static SbBool | isSortedLayersSupported (SoState *state=NULL) |
Indicates if SORTED_PIXEL transparency is supported by your graphics board on the current context. | |
Static Public Member Functions inherited from SoAction | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
static void | nullAction (SoAction *, SoNode *) |
Null action method that can be stored in lookup table when desired. | |
Static Public Member Functions inherited from SoTypedObject | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
Additional Inherited Members | |
Public Types inherited from SoGLRenderAction | |
enum | TransparencyType { NO_TRANSPARENCY , NO_SORT , OPAQUE_FIRST , SORTED_OBJECT , SORTED_PIXEL } |
Transparency rendering algorithm. More... | |
enum | FastEditSavePolicy { DISABLE , EACH_FRAME , WHEN_NEEDED } |
Fast edit traversal types. More... | |
enum | AbortCode { CONTINUE , ABORT , PRUNE , DELAY } |
Possible return codes from a render abort callback. More... | |
enum | InvalidateCacheMode { OFF , ONCE , ALWAYS } |
Invalidate cache mode. More... | |
enum | AutoCacheMode { DO_AUTO_CACHE = 1 , DONT_AUTO_CACHE = 2 } |
Two bits are stored. More... | |
typedef AbortCode | SoGLRenderAbortCB(void *userData) |
Callback functions for render abort should be of this type. | |
Public Types inherited from SoAction | |
enum | DistribMode { LOCAL_ONLY , CLUSTER_ONLY , ALL } |
This is used to define the way an action is distributed across a cluster. More... | |
enum | AppliedCode { NODE , PATH , PATH_LIST } |
This enum is used to determine what the action is being applied to. More... | |
enum | PathCode { NO_PATH , IN_PATH , BELOW_PATH , OFF_PATH } |
This enum may be used during traversal of nodes to indicate where the node is with respect to the path being traversed. More... | |
A halo highlight style.
SoHaloHighlightRenderAction is a render action which renders the specified scene graph, then renders a "halo" highlight around each selected object. See the images below for examples of this highlight technique. Halo highlighting works with all kinds of shapes including VolumeViz and MeshVizXLM. However, if a selected object does not write to the depth buffer for any reason, it will not be highlighted.
Selected objects are specified by the first selection node (SoSelection or SoExtSelection) node in the scene to which this action is applied. If there is no selection node in the scene graph, then no objects will be highlighted.
The application must explicitly tell Open Inventor to use a highlight render action in place of the default SoGLRenderAction in the SoSceneManager class using the setGLRenderAction() method. The viewer classes provide a convenience setGLRenderAction() method that calls SoSceneManager (see e.g. SoWinRenderArea).
For convenience, the viewer classes also provide the redrawOnSelectionChange() method. This method attaches a sensor to the specified selection node and automatically schedules a redraw if the set of selected objects is modified.
Here is an example of an SoAlgebraicCone highlighted with an SoHaloHighlightRenderAction:
Here are parameters that can be adjusted:
NOTES
2 selected objects are highlighted as one |
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SoLineHighlightRenderAction, SoColorHighlightRenderAction, SoBoxHighlightRenderAction, SoHighlightRenderAction, SoGLRenderAction, SoSelection, SoWinRenderArea
Definition at line 147 of file SoHaloHighlightRenderAction.h.
SoHaloHighlightRenderAction::SoHaloHighlightRenderAction | ( | ) |
SoHaloHighlightRenderAction::SoHaloHighlightRenderAction | ( | const SbViewportRegion & | viewportRegion | ) |
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Returns the type identifier for this class.
const SbColor & SoHaloHighlightRenderAction::getHaloColor | ( | ) | const |
See setHaloColor()
float SoHaloHighlightRenderAction::getHaloSmoothFactor | ( | ) | const |
int SoHaloHighlightRenderAction::getHaloWidth | ( | ) | const |
See setHaloWidth()
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Returns the type identifier for this specific instance.
Reimplemented from SoHighlightRenderAction.
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bool SoHaloHighlightRenderAction::isHaloAlwaysVisible | ( | ) | const |
void SoHaloHighlightRenderAction::setHaloAlwaysVisible | ( | bool | alwaysVisible | ) |
Defines whether or not the halo can be seen through objects that are placed in front of selected shapes.
Default is FALSE.
The following images shows an example of halo highlighting with alwaysVisible set to FALSE and TRUE:
alwaysVisible = FALSE | alwaysVisible = TRUE |
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void SoHaloHighlightRenderAction::setHaloColor | ( | const SbColor & | color | ) |
Defines the color of the highlight.
Default is red (1,0,0).
Here are examples of halo highlighting with different colors:
Red | Green | Blue |
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void SoHaloHighlightRenderAction::setHaloSmoothFactor | ( | float | smoothFactor | ) |
Defines the amount of alpha attenuation of the halo contour.
Default is 0. The value will be clamped between 0 and 1.
The following images shows an example of halo highlighting with different values for the smooth factor:
smoothFactor = 0 | smoothFactor = 0.33 | smoothFactor = 0.66 | smoothFactor = 1 |
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void SoHaloHighlightRenderAction::setHaloWidth | ( | int | width | ) |
Defines the width of the halo in pixels.
Default is 3.
Only values greater or equal to 1 are accepted. If a value of 0 or lower is given, the effective value will be clamped to 1.
The following images shows an example of halo highlighting with different values for the halo width:
width = 1 | width = 3 | width = 7 | width = 15 |
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