VTK
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interpolate a quaternion More...
#include <vtkQuaternionInterpolator.h>
Public Types | |
typedef vtkObject | Superclass |
enum | { INTERPOLATION_TYPE_LINEAR =0, INTERPOLATION_TYPE_SPLINE } |
Public Types inherited from vtkObject | |
typedef vtkObjectBase | Superclass |
Public Member Functions | |
virtual int | IsA (const char *type) |
vtkQuaternionInterpolator * | NewInstance () const |
void | PrintSelf (ostream &os, vtkIndent indent) |
int | GetNumberOfQuaternions () |
void | Initialize () |
void | RemoveQuaternion (double t) |
double | GetMinimumT () |
double | GetMaximumT () |
void | AddQuaternion (double t, const vtkQuaterniond &q) |
void | AddQuaternion (double t, double q[4]) |
void | InterpolateQuaternion (double t, vtkQuaterniond &q) |
void | InterpolateQuaternion (double t, double q[4]) |
virtual void | SetInterpolationType (int) |
virtual int | GetInterpolationType () |
void | SetInterpolationTypeToLinear () |
void | SetInterpolationTypeToSpline () |
Public Member Functions inherited from vtkObject | |
vtkObject * | NewInstance () const |
virtual void | DebugOn () |
virtual void | DebugOff () |
bool | GetDebug () |
void | SetDebug (bool debugFlag) |
virtual void | Modified () |
virtual unsigned long | GetMTime () |
unsigned long | AddObserver (unsigned long event, vtkCommand *, float priority=0.0f) |
unsigned long | AddObserver (const char *event, vtkCommand *, float priority=0.0f) |
vtkCommand * | GetCommand (unsigned long tag) |
void | RemoveObserver (vtkCommand *) |
void | RemoveObservers (unsigned long event, vtkCommand *) |
void | RemoveObservers (const char *event, vtkCommand *) |
int | HasObserver (unsigned long event, vtkCommand *) |
int | HasObserver (const char *event, vtkCommand *) |
void | RemoveObserver (unsigned long tag) |
void | RemoveObservers (unsigned long event) |
void | RemoveObservers (const char *event) |
void | RemoveAllObservers () |
int | HasObserver (unsigned long event) |
int | HasObserver (const char *event) |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f) |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
int | InvokeEvent (unsigned long event, void *callData) |
int | InvokeEvent (const char *event, void *callData) |
int | InvokeEvent (unsigned long event) |
int | InvokeEvent (const char *event) |
Public Member Functions inherited from vtkObjectBase | |
const char * | GetClassName () const |
virtual void | Delete () |
virtual void | FastDelete () |
void | Print (ostream &os) |
virtual void | Register (vtkObjectBase *o) |
virtual void | UnRegister (vtkObjectBase *o) |
void | SetReferenceCount (int) |
void | PrintRevisions (ostream &) |
virtual void | PrintHeader (ostream &os, vtkIndent indent) |
virtual void | PrintTrailer (ostream &os, vtkIndent indent) |
int | GetReferenceCount () |
Static Public Member Functions | |
static int | IsTypeOf (const char *type) |
static vtkQuaternionInterpolator * | SafeDownCast (vtkObjectBase *o) |
static vtkQuaternionInterpolator * | New () |
Static Public Member Functions inherited from vtkObject | |
static int | IsTypeOf (const char *type) |
static vtkObject * | SafeDownCast (vtkObjectBase *o) |
static vtkObject * | New () |
static void | BreakOnError () |
static void | SetGlobalWarningDisplay (int val) |
static void | GlobalWarningDisplayOn () |
static void | GlobalWarningDisplayOff () |
static int | GetGlobalWarningDisplay () |
Static Public Member Functions inherited from vtkObjectBase | |
static int | IsTypeOf (const char *name) |
static vtkObjectBase * | New () |
Protected Member Functions | |
virtual vtkObjectBase * | NewInstanceInternal () const |
vtkQuaternionInterpolator () | |
virtual | ~vtkQuaternionInterpolator () |
Protected Member Functions inherited from vtkObject | |
vtkObject () | |
virtual | ~vtkObject () |
virtual void | RegisterInternal (vtkObjectBase *, int check) |
virtual void | UnRegisterInternal (vtkObjectBase *, int check) |
void | InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=NULL) |
void | InternalReleaseFocus () |
Protected Member Functions inherited from vtkObjectBase | |
vtkObjectBase () | |
virtual | ~vtkObjectBase () |
virtual void | CollectRevisions (ostream &) |
virtual void | ReportReferences (vtkGarbageCollector *) |
vtkObjectBase (const vtkObjectBase &) | |
void | operator= (const vtkObjectBase &) |
Protected Attributes | |
int | InterpolationType |
vtkQuaternionList * | QuaternionList |
Protected Attributes inherited from vtkObject | |
bool | Debug |
vtkTimeStamp | MTime |
vtkSubjectHelper * | SubjectHelper |
Protected Attributes inherited from vtkObjectBase | |
vtkAtomicInt32 | ReferenceCount |
vtkWeakPointerBase ** | WeakPointers |
interpolate a quaternion
This class is used to interpolate a series of quaternions representing the rotations of a 3D object. The interpolation may be linear in form (using spherical linear interpolation SLERP), or via spline interpolation (using SQUAD). In either case the interpolation is specialized to quaternions since the interpolation occurs on the surface of the unit quaternion sphere.
To use this class, specify at least two pairs of (t,q[4]) with the AddQuaternion() method. Next interpolate the tuples with the InterpolateQuaternion(t,q[4]) method, where "t" must be in the range of (t_min,t_max) parameter values specified by the AddQuaternion() method (t is clamped otherwise), and q[4] is filled in by the method.
There are several important background references. Ken Shoemake described the practical application of quaternions for the interpolation of rotation (K. Shoemake, "Animating rotation with quaternion curves", Computer Graphics (Siggraph '85) 19(3):245–254, 1985). Another fine reference (available on-line) is E. B. Dam, M. Koch, and M. Lillholm, Technical Report DIKU-TR-98/5, Dept. of Computer Science, University of Copenhagen, Denmark.
Definition at line 63 of file vtkQuaternionInterpolator.h.
Definition at line 66 of file vtkQuaternionInterpolator.h.
anonymous enum |
Enums to control the type of interpolation to use.
Enumerator | |
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INTERPOLATION_TYPE_LINEAR | |
INTERPOLATION_TYPE_SPLINE |
Definition at line 113 of file vtkQuaternionInterpolator.h.
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Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkObject.
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Reimplemented from vtkObject.
vtkQuaternionInterpolator* vtkQuaternionInterpolator::NewInstance | ( | ) | const |
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Instantiate the class.
int vtkQuaternionInterpolator::GetNumberOfQuaternions | ( | ) |
Return the number of quaternions in the list of quaternions to be interpolated.
double vtkQuaternionInterpolator::GetMinimumT | ( | ) |
Obtain some information about the interpolation range. The numbers returned (corresponding to parameter t, usually thought of as time) are undefined if the list of transforms is empty. This is a convenience method for interpolation.
double vtkQuaternionInterpolator::GetMaximumT | ( | ) |
Obtain some information about the interpolation range. The numbers returned (corresponding to parameter t, usually thought of as time) are undefined if the list of transforms is empty. This is a convenience method for interpolation.
void vtkQuaternionInterpolator::Initialize | ( | ) |
Reset the class so that it contains no data; i.e., the array of (t,q[4]) information is discarded.
void vtkQuaternionInterpolator::AddQuaternion | ( | double | t, |
const vtkQuaterniond & | q | ||
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Add another quaternion to the list of quaternions to be interpolated. Note that using the same time t value more than once replaces the previous quaternion at t. At least one quaternions must be added to define an interpolation functios.
Add another quaternion to the list of quaternions to be interpolated. Note that using the same time t value more than once replaces the previous quaternion at t. At least one quaternions must be added to define an interpolation functios.
void vtkQuaternionInterpolator::RemoveQuaternion | ( | double | t | ) |
Delete the quaternion at a particular parameter t. If there is no quaternion tuple defined at t, then the method does nothing.
void vtkQuaternionInterpolator::InterpolateQuaternion | ( | double | t, |
vtkQuaterniond & | q | ||
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Interpolate the list of quaternions and determine a new quaternion (i.e., fill in the quaternion provided). If t is outside the range of (min,max) values, then t is clamped to lie within the range.
Interpolate the list of quaternions and determine a new quaternion (i.e., fill in the quaternion provided). If t is outside the range of (min,max) values, then t is clamped to lie within the range.
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Specify which type of function to use for interpolation. By default (SetInterpolationFunctionToSpline()), cubic spline interpolation using a modifed Kochanek basis is employed. Otherwise, if SetInterpolationFunctionToLinear() is invoked, linear spherical interpolation is used between each pair of quaternions.
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Specify which type of function to use for interpolation. By default (SetInterpolationFunctionToSpline()), cubic spline interpolation using a modifed Kochanek basis is employed. Otherwise, if SetInterpolationFunctionToLinear() is invoked, linear spherical interpolation is used between each pair of quaternions.
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Specify which type of function to use for interpolation. By default (SetInterpolationFunctionToSpline()), cubic spline interpolation using a modifed Kochanek basis is employed. Otherwise, if SetInterpolationFunctionToLinear() is invoked, linear spherical interpolation is used between each pair of quaternions.
Definition at line 128 of file vtkQuaternionInterpolator.h.
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Specify which type of function to use for interpolation. By default (SetInterpolationFunctionToSpline()), cubic spline interpolation using a modifed Kochanek basis is employed. Otherwise, if SetInterpolationFunctionToLinear() is invoked, linear spherical interpolation is used between each pair of quaternions.
Definition at line 130 of file vtkQuaternionInterpolator.h.
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Definition at line 139 of file vtkQuaternionInterpolator.h.
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Definition at line 142 of file vtkQuaternionInterpolator.h.