SoNodeSensor getTriggerField getTriggerNode

/*-------------------------------------------------------------- * Using getTriggerNode/getTriggerField methods of the data * sensor. *------------------------------------------------------------*/#include <Inventor/SoDB.h>#include <Inventor/nodes/SoCube.h>#include <Inventor/nodes/SoSeparator.h>#include <Inventor/nodes/SoSphere.h>#include <Inventor/sensors/SoNodeSensor.h>#ifdef WIN32# include "print.h"#endif// Sensor callback function:static voidrootChangedCB(void *, SoSensor *s){ // We know the sensor is really a data sensor: SoDataSensor *mySensor = (SoDataSensor *)s; SoNode *changedNode = mySensor->getTriggerNode(); SoField *changedField = mySensor->getTriggerField(); printf("The node named '%s' changed/n", changedNode->getName().getString()); if (changedField != NULL) { SbName fieldName; changedNode->getFieldName(changedField, fieldName); printf(" (field %s)/n", fieldName.getString()); } else { printf(" (no fields changed)/n"); }}intmain(int, char **){ SoDB::init(); SoSeparator *root = new SoSeparator; root->ref(); root->setName("Root"); SoCube *myCube = new SoCube; root->addChild(myCube); myCube->setName("MyCube"); SoSphere *mySphere = new SoSphere; root->addChild(mySphere); mySphere->setName("MySphere"); SoNodeSensor *mySensor = new SoNodeSensor; mySensor->setPriority(0); mySensor->setFunction(rootChangedCB); mySensor->attach(root); // Now, make a few changes to the scene graph; the sensor's // callback function will be called immediately after each // change. myCube->width = 1.0; myCube->height = 2.0; mySphere->radius = 3.0; root->removeChild(mySphere); return 1;}