NAME
SoVRMLOrientationInterpolator -
The SoVRMLOrientationInterpolator class is used to interpolate
orientations.
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:
SYNOPSIS
#include <Inventor/VRMLnodes/SoVRMLOrientationInterpolator.h>
Inherits SoVRMLInterpolator.
Public Member Functions
SoVRMLOrientationInterpolator (void)
Static Public Member Functions
static void initClass (void)
Public Attributes
SoMFRotation keyValue
SoEngineOutput value_changed
Protected Member Functions
virtual ~SoVRMLOrientationInterpolator (void)
Detailed Description
The SoVRMLOrientationInterpolator class is used to interpolate
orientations.
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:
OrientationInterpolator {
eventIn SFFloat set_fraction # (-,)
exposedField MFFloat key [] # (-,)
exposedField MFRotation keyValue [] # [-1,1],(-,)
eventOut SFRotation value_changed
}
.fi
The OrientationInterpolator node interpolates among a list of rotation values specified in the keyValue field. These rotations are absolute in object space and therefore are not cumulative. The keyValue field shall contain exactly as many rotations as there are keyframes in the key field. An orientation represents the final position of an object after a rotation has been applied. An OrientationInterpolator interpolates between two orientations by computing the shortest path on the unit sphere between the two orientations. The interpolation is linear in arc length along this path. The results are undefined if the two orientations are diagonally opposite. If two consecutive keyValue values exist such that the arc length between them is greater than , the interpolation will take place on the arc complement. For example, the interpolation between the orientations (0, 1, 0, 0) and (0, 1, 0, 5.0) is equivalent to the rotation between the orientations (0, 1, 0, 2) and (0, 1, 0, 5.0). A more detailed discussion of interpolators is contained in 4.6.8, Interpolator nodes (<http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/concepts.html#4.6.8>).
Constructor & Destructor Documentation
SoVRMLOrientationInterpolator::SoVRMLOrientationInterpolator (void)
Constructor.
SoVRMLOrientationInterpolator::~SoVRMLOrientationInterpolator (void)
[protected, virtual] Destructor.
Member Function Documentation
void SoVRMLOrientationInterpolator::initClass (void) [static] Sets up
initialization for data common to all instances of this class, like
submitting necessary information to the Coin type system.
Reimplemented from SoVRMLInterpolator.
Member Data Documentation
SoMFRotation SoVRMLOrientationInterpolator::keyValue The keyValue vector.
SoEngineOutput SoVRMLOrientationInterpolator::value_changed The eventOut
which is sent every time the interpolator has calculated a new value.
Author
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