SoVRMLFog(3) Coin SoVRMLFog(3) NAME SoVRMLFog - The SoVRMLFog class is used to specify a global scene fog. SYNOPSIS #include Inherits SoNode. Public Member Functions virtual SoType getTypeId (void) const SoVRMLFog (void) virtual void GLRender (SoGLRenderAction *action) Public Member Functions inherited from SoNode void setOverride (const SbBool state) SbBool isOverride (void) const void setNodeType (const NodeType type) NodeType getNodeType (void) const virtual SoNode * copy (SbBool copyconnections=FALSE) const virtual SbBool affectsState (void) const virtual void doAction (SoAction *action) virtual void GLRenderBelowPath (SoGLRenderAction *action) virtual void GLRenderInPath (SoGLRenderAction *action) virtual void GLRenderOffPath (SoGLRenderAction *action) virtual void callback (SoCallbackAction *action) virtual void getBoundingBox (SoGetBoundingBoxAction *action) virtual void getMatrix (SoGetMatrixAction *action) virtual void handleEvent (SoHandleEventAction *action) virtual void pick (SoPickAction *action) virtual void rayPick (SoRayPickAction *action) virtual void search (SoSearchAction *action) virtual void write (SoWriteAction *action) virtual void audioRender (SoAudioRenderAction *action) virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action) virtual void grabEventsSetup (void) virtual void grabEventsCleanup (void) virtual void startNotify (void) virtual void notify (SoNotList *l) SbUniqueId getNodeId (void) const virtual SoChildList * getChildren (void) const virtual void writeInstance (SoOutput *out) virtual SoNode * addToCopyDict (void) const virtual void copyContents (const SoFieldContainer *from, SbBool copyconnections) virtual SoFieldContainer * copyThroughConnection (void) const Public Member Functions inherited from SoFieldContainer void setToDefaults (void) SbBool hasDefaultValues (void) const SbBool fieldsAreEqual (const SoFieldContainer *container) const void copyFieldValues (const SoFieldContainer *container, SbBool copyconnections=FALSE) SbBool set (const char *const fielddata) void get (SbString &fielddata) virtual int getFields (SoFieldList &l) const virtual int getAllFields (SoFieldList &l) const virtual SoField * getField (const SbName &name) const virtual SoField * getEventIn (const SbName &name) const virtual SoField * getEventOut (const SbName &name) const SbBool getFieldName (const SoField *const field, SbName &name) const SbBool enableNotify (const SbBool flag) SbBool isNotifyEnabled (void) const SbBool set (const char *fielddata, SoInput *input) void get (SbString &fielddata, SoOutput *out) virtual SbBool validateNewFieldValue (SoField *field, void *newval) virtual void addWriteReference (SoOutput *out, SbBool isfromfield=FALSE) SbBool getIsBuiltIn (void) const virtual void getFieldsMemorySize (size_t &managed, size_t &unmanaged) const void setUserData (void *userdata) const void * getUserData (void) const Public Member Functions inherited from SoBase void ref (void) const void unref (void) const void unrefNoDelete (void) const int32_t getRefCount (void) const void touch (void) SbBool isOfType (SoType type) const Returns TRUE if the type of this object is either of the same type or inherited from type. virtual SbName getName (void) const virtual void setName (const SbName &newname) void addAuditor (void *const auditor, const SoNotRec::Type type) void removeAuditor (void *const auditor, const SoNotRec::Type type) const SoAuditorList & getAuditors (void) const SbBool shouldWrite (void) void assertAlive (void) const Static Public Member Functions static SoType getClassTypeId (void) static void initClass (void) Static Public Member Functions inherited from SoNode static uint32_t getCompatibilityTypes (const SoType &nodetype) static SoType getClassTypeId (void) static SoNode * getByName (const SbName &name) static int getByName (const SbName &name, SoNodeList &l) static void initClass (void) Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system. static void initClasses (void) static SbUniqueId getNextNodeId (void) static int getActionMethodIndex (const SoType type) static void getBoundingBoxS (SoAction *action, SoNode *node) static void GLRenderS (SoAction *action, SoNode *node) static void callbackS (SoAction *action, SoNode *node) static void getMatrixS (SoAction *action, SoNode *node) static void handleEventS (SoAction *action, SoNode *node) static void pickS (SoAction *action, SoNode *node) static void rayPickS (SoAction *action, SoNode *node) static void searchS (SoAction *action, SoNode *node) static void writeS (SoAction *action, SoNode *node) static void audioRenderS (SoAction *action, SoNode *node) static void getPrimitiveCountS (SoAction *action, SoNode *node) Static Public Member Functions inherited from SoFieldContainer static void initClass (void) Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system. static SoType getClassTypeId (void) This static method returns the SoType object associated with objects of this class. static void cleanupClass (void) static void initCopyDict (void) static void addCopy (const SoFieldContainer *orig, const SoFieldContainer *copy) static SoFieldContainer * checkCopy (const SoFieldContainer *orig) static SoFieldContainer * findCopy (const SoFieldContainer *orig, const SbBool copyconnections) static void copyDone (void) Static Public Member Functions inherited from SoBase static void initClass (void) Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system. static SoType getClassTypeId (void) This static method returns the SoType object associated with objects of this class. static void addName (SoBase *const base, const char *const name) static void removeName (SoBase *const base, const char *const name) static void incrementCurrentWriteCounter (void) static void decrementCurrentWriteCounter (void) static SoBase * getNamedBase (const SbName &name, SoType type) static int getNamedBases (const SbName &name, SoBaseList &baselist, SoType type) static SbBool read (SoInput *input, SoBase *&base, SoType expectedtype) static void setInstancePrefix (const SbString &c) static void setTraceRefs (SbBool trace) static SbBool getTraceRefs (void) static SbBool connectRoute (SoInput *input, const SbName &fromnodename, const SbName &fromfieldname, const SbName &tonodename, const SbName &tofieldname) static SbBool readRoute (SoInput *input) Public Attributes SoSFString fogType SoSFFloat visibilityRange SoSFColor color Protected Member Functions virtual const SoFieldData * getFieldData (void) const virtual ~SoVRMLFog () Protected Member Functions inherited from SoNode SoNode (void) virtual ~SoNode () virtual SbBool readInstance (SoInput *in, unsigned short flags) Protected Member Functions inherited from SoFieldContainer SoFieldContainer (void) virtual ~SoFieldContainer () Protected Member Functions inherited from SoBase SoBase (void) virtual ~SoBase () virtual void destroy (void) SbBool hasMultipleWriteRefs (void) const SbBool writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) const void writeFooter (SoOutput *out) const virtual const char * getFileFormatName (void) const virtual SoNotRec createNotRec (void) Static Protected Member Functions static const SoFieldData ** getFieldDataPtr (void) Static Protected Member Functions inherited from SoNode static const SoFieldData ** getFieldDataPtr (void) static void setNextActionMethodIndex (int index) static int getNextActionMethodIndex (void) static void incNextActionMethodIndex (void) static void setCompatibilityTypes (const SoType &nodetype, const uint32_t bitmask) Static Protected Member Functions inherited from SoBase static uint32_t getCurrentWriteCounter (void) static void staticDataLock (void) static void staticDataUnlock (void) Protected Attributes SoSFBool set_bind SoSFBool isBound Protected Attributes inherited from SoNode SbUniqueId uniqueId Protected Attributes inherited from SoFieldContainer SbBool isBuiltIn Additional Inherited Members Public Types inherited from SoNode enum NodeType { INVENTOR = 0x0000, VRML1 = 0x0001, VRML2 = 0x0002, INVENTOR_1 = 0x0004, INVENTOR_2_0 = 0x0008, INVENTOR_2_1 = 0x0010, INVENTOR_2_5 = 0x0020, INVENTOR_2_6 = 0x0040, COIN_1_0 = 0x0080, COIN_2_0 = 0x0100, EXTENSION = 0x0200, COIN_2_2 = 0x0400, COIN_2_3 = 0x0800, COIN_2_4 = 0x1000, INVENTOR_5_0 = 0x2000, COIN_2_5 = 0x4000, COIN_3_0 = 0x8000, INVENTOR_6_0 = 0x10000, COIN_4_0 = 0x20000 } Protected Types inherited from SoBase enum BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 } Static Protected Attributes inherited from SoNode static SbUniqueId nextUniqueId = 1 static int nextActionMethodIndex = 0 Detailed Description The SoVRMLFog class is used to specify a global scene fog. The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC 14772-1:1997). It is copyright The Web3D Consortium, and is used by permission of the Consortium: Fog { exposedField SFColor color 1 1 1 # [0,1] exposedField SFString fogType 'LINEAR' exposedField SFFloat visibilityRange 0 # [0,inf) eventIn SFBool set_bind eventOut SFBool isBound } The Fog node provides a way to simulate atmospheric effects by blending objects with the colour specified by the color field based on the distances of the various objects from the viewer. The distances are calculated in the coordinate space of the Fog node. The visibilityRange specifies the distance in metres (in the local coordinate system) at which objects are totally obscured by the fog. Objects located outside the visibilityRange from the viewer are drawn with a constant colour of color. Objects very close to the viewer are blended very little with the fog color. A visibilityRange of 0.0 disables the Fog node. The visibilityRange is affected by the scaling transformations of the Fog node's parents; translations and rotations have no affect on visibilityRange. Values of the visibilityRange field shall be in the range [0, ). Since Fog nodes are bindable children nodes (see 4.6.10, Bindable children nodes http://www.web3d.org/documents/specifications/14772/V2.0/part1/concepts.html#4.6.10), a Fog node stack exists, in which the top- most Fog node on the stack is currently active. To push a Fog node onto the top of the stack, a TRUE value is sent to the set_bind eventIn. Once active, the Fog node is bound to the browser view. A FALSE value sent to set_bind, pops the Fog node from the stack and unbinds it from the browser viewer. More details on the Fog node stack can be found in 4.6.10, Bindable children nodes (http://www.web3d.org/documents/specifications/14772/V2.0/part1/concepts.html#4.6.10). The fogType field controls how much of the fog colour is blended with the object as a function of distance. If fogType is 'LINEAR', the amount of blending is a linear function of the distance, resulting in a depth cueing effect. If fogType is 'EXPONENTIAL,' an exponential increase in blending is used, resulting in a more natural fog appearance. The effect of fog on lighting calculations is described in 4.14, Lighting model (http://www.web3d.org/documents/specifications/14772/V2.0/part1/concepts.html#4.6.14). Constructor & Destructor Documentation SoVRMLFog::SoVRMLFog (void) Constructor. SoVRMLFog::~SoVRMLFog () [protected], [virtual] Destructor. Member Function Documentation SoType SoVRMLFog::getClassTypeId (void) [static] This static method returns the SoType object associated with objects of this class. SoType SoVRMLFog::getTypeId (void) const [virtual] Returns the type identification of an object derived from a class inheriting SoBase. This is used for runtime type checking and 'downward' casting. Implements SoBase. const SoFieldData ** SoVRMLFog::getFieldDataPtr (void) [static], [protected] This API member is considered internal to the library, as it is not likely to be of interest to the application programmer. Returns the SoFieldData class which holds information about fields in this node. const SoFieldData * SoVRMLFog::getFieldData (void) const [protected], [virtual] Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL. Reimplemented from SoFieldContainer. void SoVRMLFog::initClass (void) [static] void SoVRMLFog::GLRender (SoGLRenderAction * action) [virtual] Action method for the SoGLRenderAction. This is called during rendering traversals. Nodes influencing the rendering state in any way or want to throw geometry primitives at OpenGL override this method. Reimplemented from SoNode. Member Data Documentation SoSFString SoVRMLFog::fogType Type of fog. Can be either 'LINEAR' or 'EXPONENTIAL'. Default value is 'LINEAR'. SoSFFloat SoVRMLFog::visibilityRange Range of visibility. The distance when only the fog color can be seen. Default value is (0.0). SoSFColor SoVRMLFog::color The fog color. Default value is (1, 1, 1). SoSFBool SoVRMLFog::set_bind [protected] An eventIn that is used to bind this node (make the node active). SoSFBool SoVRMLFog::isBound [protected] An eventOut that is sent when the node is bound/unbound. Author Generated automatically by Doxygen for Coin from the source code. Version 4.0.2 Tue Dec 26 2023 17:59:22 SoVRMLFog(3)