VP1CameraHelper::Imp Class Reference

Collaboration diagram for VP1CameraHelper::Imp:

Public Member Functions
void	getCameraCoordinateSystem (SoCamera *cameraarg, SoNode *root, SbMatrix &matrix, SbMatrix &inverse)
void	updateLastVars ()
bool	lastParsChanged () const
void	startSeekTimer (double duration_in_secs)
bool	instanceInvalid ()
bool	getCameraParametersForBBox (const SbBox3f &box, SoSFVec3f &position, SoSFFloat &nearDistance, SoSFFloat &farDistance, SoSFFloat &focalDistance, bool &isPerspective, SoSFFloat &height)
void	actual_animatedZoomToCameraState (const QByteArray &camstate, double duration_in_secs)
void	actual_animatedZoomToPoint (SbVec3f, double duration_in_secs=1.0)
void	actual_animatedZoomToPath (SoPath *path, double duration_in_secs=1.0, double slack=1.0, const SbVec3f &lookat=SbVec3f(999, 999, 999), const SbVec3f &upvec=SbVec3f(999, 999, 999))
void	actual_animatedZoomToBBox (const SbBox3f &box, double duration_in_secs=1.0, double slack=1.0, const SbVec3f &lookat=SbVec3f(999, 999, 999), const SbVec3f &upvec=SbVec3f(999, 999, 999))
void	actual_animatedZoomToSubTree (SoNode *subtreeroot, double duration_in_secs=1.0, double slack=1.0, const SbVec3f &lookat=SbVec3f(999, 999, 999), const SbVec3f &upvec=SbVec3f(999, 999, 999))
void	die (bool abnormal=true)

Static Public Member Functions
static void	seeksensorCB (void *data, SoSensor *)
static SbRotation	cameraOrientation (SbVec3f dir, SbVec3f up)

Public Attributes
VP1CameraHelper *	theclass
SoCamera *	camera
SoGroup *	sceneroot
QByteArray	targetCamState
bool	forceCircular
SoTimerSensor *	seeksensor
float	seekperiod
SbBool	inseekmode
SbBool	seektopoint
float	seekdistance
SbBool	seekdistanceabs
SbVec3f	camerastartposition
SbVec3f	cameraendposition
SbRotation	camerastartorient
SbRotation	cameraendorient
SoSFFloat	camerastart_nearDistance
SoSFFloat	cameraend_nearDistance
SoSFFloat	camerastart_farDistance
SoSFFloat	cameraend_farDistance
SoSFFloat	camerastart_focalDistance
SoSFFloat	cameraend_focalDistance
bool	camera_isperspective
SoSFFloat	camerastart_ortho_height
SoSFFloat	cameraend_ortho_height
bool	varySpeed
double	clipVol_startPercentage
double	clipVol_percentage
double	clipVol_endPercentage
VP1ExaminerViewer *	renderArea
QString	outputdir
QString	prefix
double	fps
int	ntotframes
int	iframe
int	width
int	height
SbRotation	last_cameraorient
SbVec3f	last_cameraposition
SoSFFloat	last_camera_ortho_height
double	clipVol_lastPercentage
SoSearchAction *	searchaction
SoGetMatrixAction *	matrixaction
int32_t	camera_ref
bool	instance_invalid

Static Public Attributes
static std::map< SoCamera *, VP1CameraHelper * >	helpers

Detailed Description

Definition at line 42 of file VP1CameraHelper.cxx.

Member Function Documentation

actual_animatedZoomToBBox()

void VP1CameraHelper::Imp::actual_animatedZoomToBBox	(	const SbBox3f &	box,
		double	duration_in_secs = 1.0,
		double	slack = 1.0,
		const SbVec3f &	lookat = SbVec3f(999,999,999),
		const SbVec3f &	upvec = SbVec3f(999,999,999) )

Definition at line 474 of file VP1CameraHelper.cxx.

{
  if (instanceInvalid()) {
    die();
    return;
  }
 
  if (slack<=0.0||duration_in_secs<0.0) {
    die();
    return;
  }
 
  if (instanceInvalid()) {
    die();
    return;
  }
 
  if (box.isEmpty()) {
    die();
    return;
  }
  SbBox3f actualbbox = box;
  if (slack!=1.0) {
    float minx, miny, minz, maxx, maxy, maxz;
    actualbbox.getBounds (minx, miny, minz, maxx, maxy, maxz);
    float dx(maxx-minx), cx(0.5*(maxx+minx));
    float dy(maxy-miny), cy(0.5*(maxy+miny));
    float dz(maxz-minz), cz(0.5*(maxz+minz));
    actualbbox.setBounds (cx-0.5*slack*dx, cy-0.5*slack*dy, cz-0.5*slack*dz,
              cx+0.5*slack*dx, cy+0.5*slack*dy, cz+0.5*slack*dz);
  }
 
 
 
  SoSFVec3f target_position;
  SoSFFloat target_nearDistance;
  SoSFFloat target_farDistance;
  SoSFFloat target_focalDistance;
  bool currentcamera_isperspective;
  SoSFFloat target_ortho_height;
 
  camerastartorient = camera->orientation.getValue();
 
  bool changeorient(false);
  if (lookat==SbVec3f(999,999,999)&&upvec==SbVec3f(999,999,999)) {
    cameraendorient = camerastartorient;//Same orientation
  } else {
    changeorient=true;
    //At least one of view direction and upwards direction is set by user
    SbVec3f actual_lookat(lookat);
    if (lookat==SbVec3f(999,999,999)) {
      //Use present view direction of camera
      SbRotation camrot = camera->orientation.getValue();
      actual_lookat = SbVec3f(0.0f, 0.0f, -1.0f); // init to default view direction vector
      camrot.multVec(actual_lookat, actual_lookat);
    }
    SbVec3f actual_upvec(upvec);
    if (upvec==SbVec3f(999,999,999)) {
      //Use present upwards direction of camera
      SbRotation camrot = camera->orientation.getValue();
      actual_upvec = SbVec3f(0.0f, 1.0f, 0.0f); // init to default up vector
      camrot.multVec(actual_upvec, actual_upvec);
      //       { float x,y,z; actual_upvec.getValue(x,y,z);
      //    //std::cout<<"USE PRESENT CAMERA UPVEC ( "<<x<<", "<<y<<", "<<z<<" )"<<std::endl;
      //       }
    }
    //Use actual_lookat and actual_upvec to construct an orientation
    //of the camera (refer to the SoCamera doc. for how it should be
    //defined):
    cameraendorient = Imp::cameraOrientation(actual_lookat,actual_upvec);
  }
 
 
  if (changeorient)
    camera->orientation.setValue(cameraendorient);
  if (!getCameraParametersForBBox( actualbbox,
                      target_position, target_nearDistance,
                      target_farDistance, target_focalDistance,
                      currentcamera_isperspective,target_ortho_height)) {
    die();
    return;
  }
  camerastartposition = camera->position.getValue();
  cameraendposition = target_position.getValue();
 
  camerastart_nearDistance = camera->nearDistance.getValue();
  cameraend_nearDistance = target_nearDistance;
  camerastart_farDistance = camera->farDistance.getValue();
  cameraend_farDistance = target_farDistance;
  camerastart_focalDistance = camera->focalDistance.getValue();
  cameraend_focalDistance = target_focalDistance;
  camera_isperspective = currentcamera_isperspective;
  if (camera_isperspective) {
    camerastart_ortho_height = 1.0f;//Irrelevant value since not needed (we could cast to orthographic camera and get the real value).
    cameraend_ortho_height = camerastart_ortho_height;
  } else {
    SoOrthographicCamera * orthocam =static_cast<SoOrthographicCamera*>(camera);
    if (!orthocam) {
      if (changeorient)
    camera->orientation.setValue(camerastartorient);
      die();
      return;
    }
    camerastart_ortho_height = orthocam->height.getValue();
    cameraend_ortho_height = target_ortho_height;
  }
  if (changeorient)
    camera->orientation.setValue(camerastartorient);
 
  //Start seek:
 
  startSeekTimer(duration_in_secs);
}

actual_animatedZoomToCameraState()

void VP1CameraHelper::Imp::actual_animatedZoomToCameraState	(	const QByteArray &	camstate,
		double	duration_in_secs )

Definition at line 320 of file VP1CameraHelper.cxx.

{
  if (!camera||camstate==QByteArray()||duration_in_secs<0.0) {
    die();
    return;
  }
 
  if (instanceInvalid()) {
    if (seeksensor->isScheduled())
      seeksensor->unschedule();
    die();
    return;
  }
 
  targetCamState = camstate;
 
  const bool perspective(camera->getTypeId().isDerivedFrom(SoPerspectiveCamera::getClassTypeId()));
  SoCamera * targetcam = perspective ? static_cast<SoCamera*>(new SoPerspectiveCamera)
                                     : static_cast<SoCamera*>(new SoOrthographicCamera);
  targetcam->ref();
  QByteArray ba = camstate;
  if (!VP1QtInventorUtils::deserializeSoCameraParameters( ba, *targetcam )) {
    targetcam->unref();
    die();
    return;
  }
 
  camera_isperspective = perspective;
  camerastartposition = camera->position.getValue();
  camerastartorient = camera->orientation.getValue();
  camerastart_nearDistance = camera->nearDistance.getValue();
  camerastart_farDistance = camera->farDistance.getValue();
  camerastart_focalDistance = camera->focalDistance.getValue();
  cameraendposition = targetcam->position.getValue();
  cameraendorient = targetcam->orientation.getValue();
  cameraend_nearDistance = targetcam->nearDistance.getValue();
  cameraend_farDistance = targetcam->farDistance.getValue();
  cameraend_focalDistance = targetcam->focalDistance.getValue();
  if (!perspective) {
    camerastart_ortho_height = static_cast<SoOrthographicCamera*>(camera)->height.getValue();
    cameraend_ortho_height = static_cast<SoOrthographicCamera*>(targetcam)->height.getValue();
  }
  targetcam->unref();
 
  startSeekTimer( duration_in_secs );
}

actual_animatedZoomToPath()

void VP1CameraHelper::Imp::actual_animatedZoomToPath	(	SoPath *	path,
		double	duration_in_secs = 1.0,
		double	slack = 1.0,
		const SbVec3f &	lookat = SbVec3f(999,999,999),
		const SbVec3f &	upvec = SbVec3f(999,999,999) )

Definition at line 384 of file VP1CameraHelper.cxx.

{
  if (!path||instanceInvalid()) {
    die();
    return;
  }
 
  if (slack<=0.0||duration_in_secs<0.0) {
    die();
    return;
  }
 
  if (instanceInvalid()) {
    if (seeksensor->isScheduled())
      seeksensor->unschedule();
    die();
    return;
  }
  SbViewportRegion dummyvp;
  SoGetBoundingBoxAction mybboxaction(dummyvp);
  mybboxaction.apply(path);
  SbBox3f box = mybboxaction.getBoundingBox();
 
  actual_animatedZoomToBBox(box, duration_in_secs, slack, lookat,upvec);
}

actual_animatedZoomToPoint()

void VP1CameraHelper::Imp::actual_animatedZoomToPoint	(	SbVec3f	targetpoint,
		double	duration_in_secs = 1.0 )

Definition at line 619 of file VP1CameraHelper.cxx.

{
  if (instanceInvalid()) {
    die();
    return;
  }
 
  if (duration_in_secs<0.0) {
    die();
    return;
  }
 
  if (instanceInvalid()) {
    die();
    return;
  }
 
  camerastartposition = camera->position.getValue();
  camerastartorient = camera->orientation.getValue();
 
  //The following variables are not needed in seekToPoint mode, so
  //give them values indicating they should not be updated:
 
  camerastart_nearDistance = camera->nearDistance.getValue();
  cameraend_nearDistance = camerastart_nearDistance;
  camerastart_farDistance = camera->farDistance.getValue();
  cameraend_farDistance = camerastart_farDistance;
  camerastart_focalDistance = camera->focalDistance.getValue();
  cameraend_focalDistance = camerastart_focalDistance;
  //It actually doesnt matter if we set this one:
  camera_isperspective=!(camera->getTypeId() == SoOrthographicCamera::getClassTypeId());
  camerastart_ortho_height = 1.0f;//Irrelevant value since not needed (we could cast to orthographic camera and get the real value).
  cameraend_ortho_height = camerastart_ortho_height;
 
  // move point to the camera coordinate system, consider
  // transformations before camera in the scene graph
  SbMatrix cameramatrix, camerainverse;
  getCameraCoordinateSystem(camera,
                   sceneroot,
                   cameramatrix,
                   camerainverse);
  camerainverse.multVecMatrix(targetpoint, targetpoint);
  float fd = seekdistance;
  if (!seekdistanceabs)
    fd *= (targetpoint - camera->position.getValue()).length()/100.0f;
  camera->focalDistance = fd;
 
  SbVec3f dir = targetpoint - camerastartposition;
  dir.normalize();
 
  // find a rotation that rotates current camera direction into new
  // camera direction.
  SbVec3f olddir;
  camera->orientation.getValue().multVec(SbVec3f(0, 0, -1), olddir);
  SbRotation diffrot(olddir, dir);
  cameraendposition = targetpoint - fd * dir;
  cameraendorient = camera->orientation.getValue() * diffrot;
 
  startSeekTimer(duration_in_secs);
}

actual_animatedZoomToSubTree()

void VP1CameraHelper::Imp::actual_animatedZoomToSubTree	(	SoNode *	subtreeroot,
		double	duration_in_secs = 1.0,
		double	slack = 1.0,
		const SbVec3f &	lookat = SbVec3f(999,999,999),
		const SbVec3f &	upvec = SbVec3f(999,999,999) )

Definition at line 426 of file VP1CameraHelper.cxx.

{
  if (!subtreeroot||instanceInvalid()) {
    die();
    return;
  }
 
  if (slack<=0.0||duration_in_secs<0.0) {
    die();
    return;
  }
 
  if (instanceInvalid()) {
    die();
    return;
  }
 
  SoSearchAction mysearchaction;
  mysearchaction.setNode(subtreeroot);
  mysearchaction.apply(sceneroot);
  SoPath * mypath = mysearchaction.getPath();
  if (!mypath) {
    VP1Msg::messageDebug("VP1CameraHelper WARNING: Cancelled operation due to failure to locate path to node.");
    return;
  }
  mypath->ref();
  actual_animatedZoomToPath( mypath, duration_in_secs, slack, lookat,upvec );
  mypath->unref();
  mysearchaction.reset();
}

cameraOrientation()

SbRotation VP1CameraHelper::Imp::cameraOrientation ( SbVec3f dir, SbVec3f up )

static

Definition at line 927 of file VP1CameraHelper.cxx.

{
  const float epsilon = 0.00001f;
 
  //Input vectors must be non-zero:
  if (dir.sqrLength()==0.0f||up.sqrLength()==0.0f) {
    VP1Msg::messageDebug("VP1CameraHelper Warning: Asked to determine camera orientation from "
             "view and up direction vectors that are not both non-zero");
    return SbRotation(SbVec3f(0.0f, 0.0f, 1.0f), 0.0f);//Default rotation (as in SoCamera.cpp)
  }
 
  //Normalize input:
  dir.normalize();
  up.normalize();
 
  //Direction and upvector corresponding to identity rotation:
  SbVec3f dir0(0.0f, 0.0f, -1.0f), up0(0.0f, 1.0f, 0.0f);
 
  //First we construct the rotation which takes dir0 into dir:
  SbRotation rot(dir0,dir);
 
  //dir and up should not be parallel:
  if (fabs(dir.dot(up))>1.0f-epsilon) {
    VP1Msg::messageDebug("VP1CameraHelper Warning: Asked to determine camera orientation from "
             "view and up direction vectors that are essentially parallel."
             " Choosing new arbitrary up direction.");
    up = dir.cross(SbVec3f(1.0f,1.0f,0.0f));
    up.normalize();
    if (fabs(dir.dot(up))>1.0f-epsilon) {
      up = dir.cross(SbVec3f(1.0f,0.0f,1.0f));
      up.normalize();
      if (fabs(dir.dot(up))>1.0f-epsilon) {
    VP1Msg::messageDebug("VP1CameraHelper Warning: Unable to find useful up-vector.");
    return rot;
      }
    }
  }
 
  //The second rotation should rotate around dir (to leave it
  //unchanged), and should take, in the plane orthogonal to dir, (the
  //projection of) rot*up0 into (the projection of) up. This is achieved
  //by first putting the two up vectors into the plane orthogonal to
  //dir, and then simply finding the rotation which brings up0 into
  //up:
 
  //Put up vectors into plane orthogonal to dir.
  up = up - dir*(dir.dot(up));
  if (up.length()<epsilon) {
    //up and dir are parallel?
    VP1Msg::messageDebug("VP1CameraHelper Warning: Can't determine correct up direction (1).");
    return rot;
  }
  up.normalize();
 
  rot.multVec(up0,up0);
  up0 = up0 - dir*(dir.dot(up0));
  if (up0.length()<epsilon) {
    //up0 and dir are parallel?
    VP1Msg::messageDebug("VP1CameraHelper Warning: Can't determine correct up direction (2).");
    return rot;
  }
  up0.normalize();
 
  //Done:
  return rot*SbRotation(up0,up);
}

die()

void VP1CameraHelper::Imp::die ( bool abnormal = true )

inline

Definition at line 135 of file VP1CameraHelper.cxx.

  {
    VP1Msg::messageVerbose("VP1CameraHelper::Imp::die(abnormal="+VP1Msg::str(abnormal)+")");
    if (seeksensor&&seeksensor->isScheduled())
      seeksensor->unschedule();
    if (abnormal)
      theclass->animationFinishedAbnormally();
    else
      theclass->animationFinished();
    theclass->deleteLater();
  }

getCameraCoordinateSystem()

void VP1CameraHelper::Imp::getCameraCoordinateSystem	(	SoCamera *	cameraarg,
		SoNode *	root,
		SbMatrix &	matrix,
		SbMatrix &	inverse )

Definition at line 830 of file VP1CameraHelper.cxx.

{
  searchaction->reset();
  searchaction->setSearchingAll(TRUE);
  searchaction->setInterest(SoSearchAction::FIRST);
  searchaction->setNode(cameraarg);
  searchaction->apply(root);
 
  matrix = inverse = SbMatrix::identity();
  if (searchaction->getPath()) {
    matrixaction->apply(searchaction->getPath());
    matrix = matrixaction->getMatrix();
    inverse = matrixaction->getInverse();
  }
  searchaction->reset();
}

getCameraParametersForBBox()

bool VP1CameraHelper::Imp::getCameraParametersForBBox	(	const SbBox3f &	box,
		SoSFVec3f &	position,
		SoSFFloat &	nearDistance,
		SoSFFloat &	farDistance,
		SoSFFloat &	focalDistance,
		bool &	isPerspective,
		SoSFFloat &	height )

Definition at line 851 of file VP1CameraHelper.cxx.

{
  float aspect = camera->aspectRatio.getValue();
 
 if (box.isEmpty())
    return false;
  if (camera->getTypeId() == SoPerspectiveCamera::getClassTypeId()) {
    isPerspective=true;
  } else if (camera->getTypeId() == SoOrthographicCamera::getClassTypeId()) {
    isPerspective=false;
  } else {
    VP1Msg::messageDebug("VP1CameraHelper WARNING: Unknown camera type. Animation aborted.");
    return false;
  }
 
  SbVec3f cameradirection;
  camera->orientation.getValue().multVec(SbVec3f(0, 0, -1), cameradirection);
  position.setValue(box.getCenter() + -cameradirection);
 
  // Get the radius of the bounding sphere.
  SbSphere bs;
  bs.circumscribe(box);
  float radius = bs.getRadius();
 
  if (isPerspective) {
    // Make sure that everything will still be inside the viewing volume
    // even if the aspect ratio "favorizes" width over height.
    float aspectradius = radius / (aspect < 1.0f ? aspect : 1.0f);
 
    SoPerspectiveCamera * perspcam =static_cast<SoPerspectiveCamera*>(camera);
    if (!perspcam)
      return false;
    // Move the camera to the edge of the bounding sphere, while still
    // pointing at the scene.
    SbVec3f direction = position.getValue() - box.getCenter();
    (void) direction.normalize(); // we know this is not a null vector
    float movelength =
      aspectradius + (aspectradius/float(atan(perspcam->heightAngle.getValue())));
    position.setValue(box.getCenter() + direction * movelength);
  } else {
    // Make sure that everything will still be inside the viewing volume
    // even if the aspect ratio "favorizes" width over height.
    if (aspect < 1.0f)
      height = 2 * radius / aspect;
    else
      height = 2 * radius;
 
    // Move the camera to the edge of the bounding sphere, while still
    // pointing at the scene.
    SbVec3f direction = position.getValue() - box.getCenter();
    (void) direction.normalize(); // we know this is not a null vector
    position.setValue(box.getCenter() + direction * radius);
  }
 
  // Set up the clipping planes according to the slack value (a value
  // of 1.0 will yield clipping planes that are tangent to the
  // bounding sphere of the scene).
  float distance_to_midpoint = (position.getValue() - box.getCenter()).length();
  nearDistance = distance_to_midpoint - radius;
  farDistance = distance_to_midpoint + radius;
 
 
  // The focal distance is simply the distance from the camera to the
  // scene midpoint. This field is not used in rendering, its just
  // provided to make it easier for the user to do calculations based
  // on the distance between the camera and the scene.
  focalDistance = distance_to_midpoint;
 
  return true;
}

instanceInvalid()

bool VP1CameraHelper::Imp::instanceInvalid

(

)

Definition at line 811 of file VP1CameraHelper.cxx.

{
  if (instance_invalid)
    return true;
  if (!camera||camera_ref!=camera->getRefCount()) {
    instance_invalid=true;
    VP1Msg::messageDebug("VP1CameraHelper WARNING: Cancelled operation due to invalid camera.");
    return true;
  }
  if (sceneroot->getRefCount()<=1) {
    instance_invalid=true;
    VP1Msg::messageDebug("VP1CameraHelper WARNING: Cancelled operation due to sceneroot being unref'ed.");
    return true;
  }
 
  return false;
}

lastParsChanged()

bool VP1CameraHelper::Imp::lastParsChanged

(

)

const

Definition at line 288 of file VP1CameraHelper.cxx.

{
  if (camera->position.getValue()!=last_cameraposition
      ||camera->orientation.getValue()!=last_cameraorient)
    return true;
  if (!camera_isperspective
      &&static_cast<SoOrthographicCamera*>(camera)->height!=last_camera_ortho_height)
      return true;
  return false;
}

seeksensorCB()

void VP1CameraHelper::Imp::seeksensorCB ( void * data, SoSensor * s )

static

Definition at line 682 of file VP1CameraHelper.cxx.

{
    VP1Msg::messageVerbose("VP1CameraHelper::Imp::seeksensorCB()");
 
  VP1CameraHelper::Imp * d = (VP1CameraHelper::Imp *)data;
  if (!d||!s)
    return;
  if (d->instanceInvalid() || d->lastParsChanged()) {
    d->die();
    return;
  }
 
  SoTimerSensor * sensor = static_cast<SoTimerSensor *>(s);
 
  float t(0);
 
  if (d->fps>0) {
    //fixed number of frames and output
    if (d->ntotframes<0) {
      //first time: figure out total number of frames
      d->ntotframes = std::max(1,static_cast<int>((d->fps)*(d->seekperiod)+0.5));
      d->iframe = 0;
    }
    //Example: 5 total frames should give times 0.2, 0.4, 0.6, 0.8,
    //1.0. We should _not_ include 0.0 here. Otherwise chained zooms
    //will get a frame at both the old 1.0 and the new 0.0.
    t = ( (d->iframe+1==d->ntotframes) ? 1.0f : static_cast<float>((d->iframe+1)*1.0/(d->ntotframes*1.0)) );
    ++(d->iframe);
  } else {
    //normal animation:
    SbTime currenttime = SbTime::getTimeOfDay();
    t = float((currenttime - sensor->getBaseTime()).getValue()) / d->seekperiod;
  }
 
  if ((t > 1.0f) || (d->fps<=0&&(t + sensor->getInterval().getValue()/d->seekperiod > 1.0f))) t = 1.0f;
  
  d->clipVol_percentage = d->clipVol_startPercentage+(d->clipVol_endPercentage - d->clipVol_startPercentage)*t;
  emit d->theclass->clipVolumePercentageOfATLAS(d->clipVol_percentage);
 
  bool end = (t == 1.0f);
 
  if (d->varySpeed)
    t = (float) ((1.0 - cos(M_PI*t)) * 0.5);//Map t to slow down motion in the beginning and end of the animation.
 
  if (d->camera->position.getValue()!=d->cameraendposition) {
    double rBegin=d->camerastartposition.length();
    double rEnd=d->cameraendposition.length();
    double lengthRatio = rEnd/rBegin;
    SbVec3f u = d->camerastartposition; u.normalize();
    SbVec3f v = d->cameraendposition; v.normalize();
    double angle = acos(u.dot(v));
    if (d->forceCircular||(lengthRatio>0.99 && lengthRatio<1.01 && angle<0.95*M_PI && angle>0.05*M_PI)) {
      double r = rBegin + (rEnd-rBegin)*t;
      SbVec3f w = u.cross(v);
      SbRotation R(w,t*angle);
      SbVec3f z;
      R.multVec(u,z);
      z*=r;
      d->camera->position=z;
    } else {
      d->camera->position = d->camerastartposition + (d->cameraendposition - d->camerastartposition) * t;
    }
  }
  if (d->camera->orientation.getValue()!=d->cameraendorient)
    d->camera->orientation = SbRotation::slerp(d->camerastartorient,d->cameraendorient,t);
  //TKTEST: Comment out the next lines to fix camera??>
  //Other thing to try: Something about disable notify while setting multiple pars??
 
  //TEST  if (d->camera->nearDistance!=d->cameraend_nearDistance)
  //TEST    d->camera->nearDistance.setValue(d->camerastart_nearDistance.getValue()*(1-t) + d->cameraend_nearDistance.getValue()*t);
  //TEST  if (d->camera->farDistance!=d->cameraend_farDistance)
  //TEST    d->camera->farDistance.setValue(d->camerastart_farDistance.getValue()*(1-t) + d->cameraend_farDistance.getValue()*t);
  if (d->camera->focalDistance!=d->cameraend_focalDistance)
    d->camera->focalDistance.setValue(d->camerastart_focalDistance.getValue()*(1-t) + d->cameraend_focalDistance.getValue()*t);
  if (!d->camera_isperspective) {
    SoOrthographicCamera * orthocam =static_cast<SoOrthographicCamera*>(d->camera);
    if (orthocam&&orthocam->height!=d->cameraend_ortho_height)
      orthocam->height.setValue(d->camerastart_ortho_height.getValue()*(1-t) + d->cameraend_ortho_height.getValue()*t);
  }
 
  d->updateLastVars();
 
  if (d->ntotframes>0) {
    QString dummy, filename;
    VP1CameraHelper::getLastAndNextFrameFileNames( d->outputdir,d->prefix,dummy, filename );
    if (d->seekperiod>0.0) {
      VP1Msg::messageVerbose("VP1CameraHelper: Attempting to create image "+filename);
      QPixmap pm = VP1QtInventorUtils::renderToPixmap(d->renderArea,
                              d->width,d->height,false);
      if (pm.isNull()) {
    VP1Msg::messageDebug("VP1CameraHelper ERROR: Could not create image");
      } else {
    if (!pm.save(filename))
      VP1Msg::messageDebug("VP1CameraHelper ERROR: Could not save image file "+filename);
      }
    }
  }
 
  if (end) {
    if (d->targetCamState!=QByteArray()) {
      if (!VP1QtInventorUtils::deserializeSoCameraParameters( d->targetCamState, *(d->camera) )) {
    d->die();
    return;
      }
    }
    d->die(false/*non-abnormal end!*/);
  }
 
}

startSeekTimer()

void VP1CameraHelper::Imp::startSeekTimer

(

double

duration_in_secs

)

Definition at line 604 of file VP1CameraHelper.cxx.

{
  seekperiod = static_cast<float>(duration_in_secs);
 
  if (seeksensor->isScheduled())
    seeksensor->unschedule();
 
  seeksensor->setBaseTime(SbTime::getTimeOfDay());
  seeksensor->schedule();
 
  updateLastVars();
 
}

updateLastVars()

void VP1CameraHelper::Imp::updateLastVars

(

)

Definition at line 278 of file VP1CameraHelper.cxx.

{
  last_cameraposition=camera->position.getValue();
  last_cameraorient = camera->orientation.getValue();
  if (!camera_isperspective)
    last_camera_ortho_height=static_cast<SoOrthographicCamera*>(camera)->height;
  clipVol_lastPercentage = clipVol_percentage;
}

Member Data Documentation

camera

SoCamera* VP1CameraHelper::Imp::camera

Definition at line 45 of file VP1CameraHelper.cxx.

camera_isperspective

bool VP1CameraHelper::Imp::camera_isperspective

Definition at line 67 of file VP1CameraHelper.cxx.

camera_ref

int32_t VP1CameraHelper::Imp::camera_ref

Definition at line 100 of file VP1CameraHelper.cxx.

cameraend_farDistance

SoSFFloat VP1CameraHelper::Imp::cameraend_farDistance

Definition at line 65 of file VP1CameraHelper.cxx.

cameraend_focalDistance

SoSFFloat VP1CameraHelper::Imp::cameraend_focalDistance

Definition at line 66 of file VP1CameraHelper.cxx.

cameraend_nearDistance

SoSFFloat VP1CameraHelper::Imp::cameraend_nearDistance

Definition at line 64 of file VP1CameraHelper.cxx.

cameraend_ortho_height

SoSFFloat VP1CameraHelper::Imp::cameraend_ortho_height

Definition at line 68 of file VP1CameraHelper.cxx.

cameraendorient

SbRotation VP1CameraHelper::Imp::cameraendorient

Definition at line 62 of file VP1CameraHelper.cxx.

cameraendposition

SbVec3f VP1CameraHelper::Imp::cameraendposition

Definition at line 61 of file VP1CameraHelper.cxx.

camerastart_farDistance

SoSFFloat VP1CameraHelper::Imp::camerastart_farDistance

Definition at line 65 of file VP1CameraHelper.cxx.

camerastart_focalDistance

SoSFFloat VP1CameraHelper::Imp::camerastart_focalDistance

Definition at line 66 of file VP1CameraHelper.cxx.

camerastart_nearDistance

SoSFFloat VP1CameraHelper::Imp::camerastart_nearDistance

Definition at line 64 of file VP1CameraHelper.cxx.

camerastart_ortho_height

SoSFFloat VP1CameraHelper::Imp::camerastart_ortho_height

Definition at line 68 of file VP1CameraHelper.cxx.

camerastartorient

SbRotation VP1CameraHelper::Imp::camerastartorient

Definition at line 62 of file VP1CameraHelper.cxx.

camerastartposition

SbVec3f VP1CameraHelper::Imp::camerastartposition

Definition at line 61 of file VP1CameraHelper.cxx.

clipVol_endPercentage

double VP1CameraHelper::Imp::clipVol_endPercentage

Definition at line 71 of file VP1CameraHelper.cxx.

clipVol_lastPercentage

double VP1CameraHelper::Imp::clipVol_lastPercentage

Definition at line 89 of file VP1CameraHelper.cxx.

clipVol_percentage

double VP1CameraHelper::Imp::clipVol_percentage

Definition at line 71 of file VP1CameraHelper.cxx.

clipVol_startPercentage

double VP1CameraHelper::Imp::clipVol_startPercentage

Definition at line 71 of file VP1CameraHelper.cxx.

forceCircular

bool VP1CameraHelper::Imp::forceCircular

Definition at line 48 of file VP1CameraHelper.cxx.

fps

double VP1CameraHelper::Imp::fps

Definition at line 78 of file VP1CameraHelper.cxx.

height

int VP1CameraHelper::Imp::height

Definition at line 82 of file VP1CameraHelper.cxx.

helpers

std::map< SoCamera *, VP1CameraHelper * > VP1CameraHelper::Imp::helpers

static

Definition at line 114 of file VP1CameraHelper.cxx.

iframe

int VP1CameraHelper::Imp::iframe

Definition at line 80 of file VP1CameraHelper.cxx.

inseekmode

SbBool VP1CameraHelper::Imp::inseekmode

Definition at line 56 of file VP1CameraHelper.cxx.

instance_invalid

bool VP1CameraHelper::Imp::instance_invalid

Definition at line 101 of file VP1CameraHelper.cxx.

last_camera_ortho_height

SoSFFloat VP1CameraHelper::Imp::last_camera_ortho_height

Definition at line 88 of file VP1CameraHelper.cxx.

last_cameraorient

SbRotation VP1CameraHelper::Imp::last_cameraorient

Definition at line 86 of file VP1CameraHelper.cxx.

last_cameraposition

SbVec3f VP1CameraHelper::Imp::last_cameraposition

Definition at line 87 of file VP1CameraHelper.cxx.

matrixaction

SoGetMatrixAction* VP1CameraHelper::Imp::matrixaction

Definition at line 97 of file VP1CameraHelper.cxx.

ntotframes

int VP1CameraHelper::Imp::ntotframes

Definition at line 79 of file VP1CameraHelper.cxx.

outputdir

QString VP1CameraHelper::Imp::outputdir

Definition at line 76 of file VP1CameraHelper.cxx.

prefix

QString VP1CameraHelper::Imp::prefix

Definition at line 77 of file VP1CameraHelper.cxx.

renderArea

VP1ExaminerViewer* VP1CameraHelper::Imp::renderArea

Definition at line 75 of file VP1CameraHelper.cxx.

sceneroot

SoGroup* VP1CameraHelper::Imp::sceneroot

Definition at line 46 of file VP1CameraHelper.cxx.

searchaction

SoSearchAction* VP1CameraHelper::Imp::searchaction

Definition at line 96 of file VP1CameraHelper.cxx.

seekdistance

float VP1CameraHelper::Imp::seekdistance

Definition at line 58 of file VP1CameraHelper.cxx.

seekdistanceabs

SbBool VP1CameraHelper::Imp::seekdistanceabs

Definition at line 59 of file VP1CameraHelper.cxx.

seekperiod

float VP1CameraHelper::Imp::seekperiod

Definition at line 55 of file VP1CameraHelper.cxx.

seeksensor

SoTimerSensor* VP1CameraHelper::Imp::seeksensor

Definition at line 54 of file VP1CameraHelper.cxx.

seektopoint

SbBool VP1CameraHelper::Imp::seektopoint

Definition at line 57 of file VP1CameraHelper.cxx.

targetCamState

QByteArray VP1CameraHelper::Imp::targetCamState

Definition at line 47 of file VP1CameraHelper.cxx.

theclass

VP1CameraHelper* VP1CameraHelper::Imp::theclass

Definition at line 44 of file VP1CameraHelper.cxx.

varySpeed

bool VP1CameraHelper::Imp::varySpeed

Definition at line 70 of file VP1CameraHelper.cxx.

width

int VP1CameraHelper::Imp::width

Definition at line 81 of file VP1CameraHelper.cxx.

---

The documentation for this class was generated from the following file:

• VP1CameraHelper.cxx