SoShadowDirectionalLight(3) Coin SoShadowDirectionalLight(3) NAME SoShadowDirectionalLight - The SoShadowDirectionalLight class is a node for setting up a directional light which casts shadows. SYNOPSIS #include Inherits SoDirectionalLight. Public Member Functions virtual SoType getTypeId (void) const SoShadowDirectionalLight (void) virtual void GLRender (SoGLRenderAction *action) Public Member Functions inherited from SoDirectionalLight SoDirectionalLight (void) Public Member Functions inherited from SoLight virtual void callback (SoCallbackAction *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 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 SoDirectionalLight static SoType getClassTypeId (void) 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 Public Member Functions inherited from SoLight static SoType getClassTypeId (void) 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 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 SoSFNode shadowMapScene SoSFFloat maxShadowDistance SoSFVec3f bboxCenter SoSFVec3f bboxSize Public Attributes inherited from SoDirectionalLight SoSFVec3f direction Public Attributes inherited from SoLight SoSFBool on SoSFFloat intensity SoSFColor color Protected Member Functions virtual const SoFieldData * getFieldData (void) const virtual ~SoShadowDirectionalLight () Protected Member Functions inherited from SoDirectionalLight virtual ~SoDirectionalLight () Protected Member Functions inherited from SoLight SoLight (void) virtual ~SoLight () 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 SoDirectionalLight static const SoFieldData ** getFieldDataPtr (void) Static Protected Member Functions inherited from SoLight 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) 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 } Protected Attributes inherited from SoNode SbUniqueId uniqueId Protected Attributes inherited from SoFieldContainer SbBool isBuiltIn Static Protected Attributes inherited from SoNode static SbUniqueId nextUniqueId = 1 static int nextActionMethodIndex = 0 Detailed Description The SoShadowDirectionalLight class is a node for setting up a directional light which casts shadows. Directional lights usually affect everything, but since it is not always feasible to use one shadow map for the entire scene graph. This node has some extra features to work around this. It calculates the intersection between the current view volume and either the scene bounding box, or the bounding box provided in this node. The shadows are only calculated for this volume. This means that you'll get more detailed shadows as you zoom in on items in the scene graph. In addition, you can set the maximum distance from the camera which will be shaded with shadows. Think of this a new far plane for the camera which only affects shadows. As with SoShadowSpotLight, it's possible to optimize further by setting your own shadow caster scene graph in the shadowMapScene field. The example scene graph below demonstrates how you can use this node to create shadows on a large number of objects, and still get decent precision when zooming in. To further reduce the volume covered by the shadow map, you can set maxShadowDistance to some number > 0. This is the distance from the camera where shadows will be visible. DirectionalLight { direction 0 0 -1 intensity 0.2 } ShadowGroup { quality 1 # to get per pixel lighting precision 1 ShadowDirectionalLight { direction 1 1 -1 intensity 0.8 # enable this to reduce the shadow view distance # maxShadowDistance 200 } # 900 cubes spaced out over a fairly large area Array { origin CENTER numElements1 30 numElements2 30 numElements3 1 separation1 20 0 0 separation2 0 20 0 separation3 0 0 0 Material { diffuseColor 1 0 0 specularColor 1 1 1 } Cube { width 4 height 4 depth 4 } } # a chess board Coordinate3 { point [ -400 -400 -3, 400 -400 -3, 400 400 -3, -400 400 -3 ] } Material { specularColor 1 1 1 shininess 0.9 } Complexity { textureQuality 0.1 } Texture2 { image 2 2 3 0xffffff 0x225588 0x225588 0xffffff } Texture2Transform { scaleFactor 20 20 } FaceSet { numVertices 4 } } Since Coin 3.0 Constructor & Destructor Documentation SoShadowDirectionalLight::SoShadowDirectionalLight (void) Constructor. SoShadowDirectionalLight::~SoShadowDirectionalLight () [protected], [virtual] Destructor. Member Function Documentation SoType SoShadowDirectionalLight::getClassTypeId (void) [static] This static method returns the SoType object associated with objects of this class. SoType SoShadowDirectionalLight::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. Reimplemented from SoDirectionalLight. const SoFieldData ** SoShadowDirectionalLight::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 * SoShadowDirectionalLight::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 SoDirectionalLight. void SoShadowDirectionalLight::initClass (void) [static] void SoShadowDirectionalLight::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 SoDirectionalLight. Member Data Documentation SoSFNode SoShadowDirectionalLight::shadowMapScene The shadow map scene graph. If this is NULL (the default), the node will behave as a normal SoDirectionalLight node. SoSFFloat SoShadowDirectionalLight::maxShadowDistance The maximum distance (from the camera) that we'll see shadows from this light source. SoSFVec3f SoShadowDirectionalLight::bboxCenter Can be used to specify the volume that should be used for calculating the resulting shadow volume. SoSFVec3f SoShadowDirectionalLight::bboxSize Can be used to specify the volume that should be used for calculating the resulting shadow volume. Author Generated automatically by Doxygen for Coin from the source code. Version 4.0.2 Tue Dec 26 2023 17:59:22 SoShadowDirectionalLight(3)