SoLineHighlightRenderAction(3) | Library Functions Manual | SoLineHighlightRenderAction(3) |
NAME¶
SoLineHighlightRenderAction - The SoLineHighlightRenderAction class renders selections with line highlighting.
SYNOPSIS¶
#include <Inventor/actions/SoLineHighlightRenderAction.h>
Inherits SoGLRenderAction.
Public Member Functions¶
virtual SoType getTypeId (void)
const
SoLineHighlightRenderAction (void)
SoLineHighlightRenderAction (const SbViewportRegion
&viewportregion)
virtual ~SoLineHighlightRenderAction (void)
virtual void apply (SoNode *node)
virtual void apply (SoPath *path)
virtual void apply (const SoPathList
&pathlist, SbBool obeysrules=FALSE)
void setVisible (const SbBool visible)
SbBool isVisible (void) const
void setColor (const SbColor &color)
const SbColor & getColor (void)
void setLinePattern (uint16_t pattern)
uint16_t getLinePattern (void) const
void setLineWidth (const float width)
float getLineWidth (void) const
Public Member Functions inherited from SoGLRenderAction
SoGLRenderAction (const SbViewportRegion
&viewportregion)
virtual ~SoGLRenderAction (void)
void setViewportRegion (const SbViewportRegion
&newregion)
const SbViewportRegion & getViewportRegion
(void) const
void setUpdateArea (const SbVec2f &origin,
const SbVec2f &size)
void getUpdateArea (SbVec2f &origin, SbVec2f
&size) const
void setAbortCallback (SoGLRenderAbortCB *const
func, void *const userdata)
void getAbortCallback (SoGLRenderAbortCB
*&func_out, void *&userdata_out) const
void setTransparencyType (const TransparencyType
type)
TransparencyType getTransparencyType (void) const
void setTransparentDelayedObjectRenderType
(TransparentDelayedObjectRenderType type)
TransparentDelayedObjectRenderType
getTransparentDelayedObjectRenderType (void) const
void setSmoothing (const SbBool smooth)
SbBool isSmoothing (void) const
void setNumPasses (const int num)
int getNumPasses (void) const
void setPassUpdate (const SbBool flag)
SbBool isPassUpdate (void) const
void setPassCallback (SoGLRenderPassCB *const func,
void *const userdata)
void setCacheContext (const uint32_t context)
uint32_t getCacheContext (void) const
void addDelayedPath (SoPath *path)
SbBool isRenderingDelayedPaths (void) const
SbBool handleTransparency (SbBool istransparent=FALSE)
void setCurPass (const int passnum, const
int numpasses)
int getCurPass (void) const
SbBool abortNow (void)
void setRenderingIsRemote (SbBool isremote)
SbBool getRenderingIsRemote (void) const
virtual void invalidateState (void)
void addPreRenderCallback (SoGLPreRenderCB *func, void
*userdata)
void removePreRenderCallback (SoGLPreRenderCB *func, void
*userdata)
void setSortedLayersNumPasses (int num)
int getSortedLayersNumPasses (void) const
void setSortedObjectOrderStrategy (const
SortedObjectOrderStrategy strategy, SoGLSortedObjectOrderCB
*cb=NULL, void *closure=NULL)
void setDelayedObjDepthWrite (SbBool write)
SbBool getDelayedObjDepthWrite (void) const
SbBool isRenderingTranspPaths (void) const
SbBool isRenderingTranspBackfaces (void) const
Public Member Functions inherited from SoAction
virtual ~SoAction (void)
virtual SbBool isOfType (SoType type) const
void apply (SoAction *beingApplied)
AppliedCode getWhatAppliedTo (void) const
SoNode * getNodeAppliedTo (void) const
SoPath * getPathAppliedTo (void) const
const SoPathList * getPathListAppliedTo (void)
const
const SoPathList * getOriginalPathListAppliedTo
(void) const
SbBool isLastPathListAppliedTo (void) const
PathCode getPathCode (int &numindices, const
int *&indices)
void traverse (SoNode *const node)
SbBool hasTerminated (void) const
const SoPath * getCurPath (void)
SoState * getState (void) const
PathCode getCurPathCode (void) const
virtual SoNode * getCurPathTail (void)
void usePathCode (int &numindices, const int
*&indices)
void pushCurPath (const int childindex,
SoNode *node=NULL)
void popCurPath (const PathCode
prevpathcode)
void pushCurPath (void)
void popPushCurPath (const int childindex,
SoNode *node=NULL)
void popCurPath (void)
void switchToPathTraversal (SoPath *path)
void switchToNodeTraversal (SoNode *node)
Static Public Member Functions¶
static SoType getClassTypeId (void)
static void addMethod (const SoType type,
SoActionMethod method)
static void enableElement (const SoType
type, const int stackindex)
static void initClass (void)
Static Public Member Functions inherited from
SoGLRenderAction
static SoType getClassTypeId (void)
static void addMethod (const SoType type,
SoActionMethod method)
static void enableElement (const SoType
type, const int stackindex)
static void initClass (void)
Static Public Member Functions inherited from SoAction
static void initClass (void)
static void initClasses (void)
static SoType getClassTypeId (void)
static void nullAction (SoAction *action,
SoNode *node)
Protected Member Functions¶
virtual const SoEnabledElementsList &
getEnabledElements (void) const
Protected Member Functions inherited from SoGLRenderAction
virtual void beginTraversal (SoNode *node)
virtual void endTraversal (SoNode *node)
Protected Member Functions inherited from SoAction
SoAction (void)
void setTerminated (const SbBool flag)
virtual SbBool shouldCompactPathList (void) const
Static Protected Member Functions¶
static SoEnabledElementsList *
getClassEnabledElements (void)
static SoActionMethodList * getClassActionMethods
(void)
Static Protected Member Functions inherited from
SoGLRenderAction
static SoEnabledElementsList * getClassEnabledElements
(void)
static SoActionMethodList * getClassActionMethods
(void)
Static Protected Member Functions inherited from SoAction
static SoEnabledElementsList * getClassEnabledElements
(void)
static SoActionMethodList * getClassActionMethods
(void)
Protected Attributes¶
SbBool hlVisible
Protected Attributes inherited from SoAction
SoState * state
SoActionMethodList * traversalMethods
Additional Inherited Members¶
Public Types inherited from SoGLRenderAction
enum TransparencyType { SCREEN_DOOR, ADD,
DELAYED_ADD, SORTED_OBJECT_ADD, BLEND,
DELAYED_BLEND, SORTED_OBJECT_BLEND,
SORTED_OBJECT_SORTED_TRIANGLE_ADD,
SORTED_OBJECT_SORTED_TRIANGLE_BLEND, NONE,
SORTED_LAYERS_BLEND }
enum TransparentDelayedObjectRenderType { ONE_PASS,
NONSOLID_SEPARATE_BACKFACE_PASS }
enum AbortCode { CONTINUE, ABORT, PRUNE,
DELAY }
enum SortedObjectOrderStrategy { BBOX_CENTER,
BBOX_CLOSEST_CORNER, BBOX_FARTHEST_CORNER,
CUSTOM_CALLBACK }
typedef AbortCode SoGLRenderAbortCB(void
*userdata)
Public Types inherited from SoAction
enum AppliedCode { NODE = 0, PATH = 1, PATH_LIST =
2 }
enum PathCode { NO_PATH = 0, IN_PATH = 1,
BELOW_PATH = 2, OFF_PATH = 3 }
Detailed Description¶
The SoLineHighlightRenderAction class renders selections with line highlighting.
See the documentation of SoBoxHighlightRenderAction.
The only difference between SoBoxHighlightRenderAction and this action is that this action renders highlights by superposing a wireframe image onto each shape instead of the bounding box when drawing the highlight.
Note: an important limitation for this rendering action is that the superimposition of a wireframe is only guaranteed to work correctly for filled shapes, due to a limitation in OpenGL's glPolygonOffset() functionality. For more information, see the class documentation of the SoPolygonOffset node.
See also
Constructor & Destructor Documentation¶
SoLineHighlightRenderAction::SoLineHighlightRenderAction (void)¶
Default constructor. Note: passes a default SbViewportRegion to the parent constructor.
SoLineHighlightRenderAction::SoLineHighlightRenderAction (const SbViewportRegion & viewportregion)¶
Constructor, taking an explicit viewportregion to render.
SoLineHighlightRenderAction::~SoLineHighlightRenderAction (void) [virtual]¶
The destructor.
Member Function Documentation¶
SoType SoLineHighlightRenderAction::getTypeId (void) const [virtual]¶
Returns the type identification of an action derived from a class inheriting SoAction. This is used for run-time type checking and 'downward' casting.
Usage example:
void bar(SoAction * action) {
if (action->getTypeId() == SoGLRenderAction::getClassTypeId()) {
// safe downward cast, know the type
SoGLRenderAction * glrender = (SoGLRenderAction *)action;
}
return; // ignore if not renderaction }
For application programmers wanting to extend the library with new actions: 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 Inventor/nodes/SoSubAction.h: SO_ACTION_SOURCE, SO_ACTION_INIT_CLASS and SO_ACTION_CONSTRUCTOR.
For more information on writing Coin extensions, see the SoAction class documentation.
Returns the actual type id of an object derived from a class inheriting SoAction. Needs to be overridden in all subclasses.
Reimplemented from SoGLRenderAction.
void SoLineHighlightRenderAction::addMethod (const SoType type, SoActionMethod method) [static]¶
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
void SoLineHighlightRenderAction::enableElement (const SoType type, const int stackindex) [static]¶
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
const SoEnabledElementsList & SoLineHighlightRenderAction::getEnabledElements (void) const [protected], [virtual]¶
Returns a list of the elements used by action instances of this class upon traversal operations.
Reimplemented from SoGLRenderAction.
void SoLineHighlightRenderAction::apply (SoNode * root) [virtual]¶
Applies the action to the scene graph rooted at root.
Note that you should not apply an action to a node with a zero reference count. The behavior in that case is undefined.
Reimplemented from SoAction.
void SoLineHighlightRenderAction::apply (SoPath * path) [virtual]¶
Applies the action to the parts of the graph defined by path.
Note that an SoPath will also contain all nodes that may influence e.g. geometry nodes in the path. So for instance applying an SoGLRenderAction on an SoPath will render that path as expected in the view, where geometry will get its materials, textures, and other appearance settings correctly.
If the path ends in an SoGroup node, the action will also traverse the tail node's children.
Reimplemented from SoAction.
void SoLineHighlightRenderAction::apply (const SoPathList & pathlist, SbBool obeysrules = FALSE) [virtual]¶
Applies action to the graphs defined by pathlist. If obeysrules is set to TRUE, pathlist must obey the following four conditions (which is the case for path lists returned from search actions for non-group nodes and path lists returned from picking actions):
All paths must start at the same head node. All paths must be sorted in traversal order. The paths must be unique. No path can continue through the end point of another path.
See also
Reimplemented from SoAction.
void SoLineHighlightRenderAction::setVisible (const SbBool visible)¶
Sets if highlight wireframes should be visible when rendering. Defaults to TRUE.
SbBool SoLineHighlightRenderAction::isVisible (void) const¶
Return if selection wireframes should be visible.
void SoLineHighlightRenderAction::setColor (const SbColor & color)¶
Sets the color of the wireframes. Defaults to red.
const SbColor & SoLineHighlightRenderAction::getColor (void)¶
Returns color of selection wireframes.
void SoLineHighlightRenderAction::setLinePattern (uint16_t pattern)¶
Sets the line pattern used when drawing wireframes. Defaults to 0xffff (i.e. full, unstippled lines).
uint16_t SoLineHighlightRenderAction::getLinePattern (void) const¶
Returns line pattern used when drawing wireframe.
void SoLineHighlightRenderAction::setLineWidth (const float width)¶
Sets the line width used when drawing wireframe. Defaults to 3 (measured in screen pixels).
float SoLineHighlightRenderAction::getLineWidth (void) const¶
Returns the line width used when drawing wireframe.
Member Data Documentation¶
SoLineHighlightRenderAction::hlVisible [protected]¶
Boolean which decides whether or not the highlights for selected nodes should be visible.
Author¶
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