CTrackKeyFramerBezier< CKeyT, T > Class Template Reference

#include <track_bezier.h>

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Detailed Description

template<class CKeyT, class T>
class CTrackKeyFramerBezier< CKeyT, T >

ITrack implementation for Bezier keyframer.

Author:

Lionel Berneguier

Nevrax France

Date:

2001

Definition at line 49 of file track_bezier.h.

Public Member Functions
virtual const IAnimatedValue &	getValue () const
	From ITrack.
Protected Types
typedef CKeyT::TValueType	TKeyValueType
Protected Member Functions
From ITrackKeyFramer
virtual void	compile ()
	compile (precalc).
virtual void	evalKey (const CKeyT *previous, const CKeyT *next, TAnimationTime datePrevious, TAnimationTime dateNext, TAnimationTime date)
	evalKey (runtime).
Private Attributes
CAnimatedValueBlendable< T >	_Value

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Member Typedef Documentation

template<class CKeyT, class T> typedef CKeyT::TValueType CTrackKeyFramerBezier< CKeyT, T >::TKeyValueType [protected]

Definition at line 61 of file track_bezier.h. Referenced by CTrackKeyFramerBezier< CKeyT, T >::evalKey().

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Member Function Documentation

template<class CKeyT, class T> virtual void CTrackKeyFramerBezier< CKeyT, T >::compile (   )  [inline, protected, virtual]

compile (precalc). Definition at line 108 of file track_bezier.h. { ITrackKeyFramer<CKeyT>::compile(); // Nothing else to do!! Tangents are given from user. }

template<class CKeyT, class T> virtual void CTrackKeyFramerBezier< CKeyT, T >::evalKey (  const CKeyT *  previous, const CKeyT *  next, TAnimationTime  datePrevious, TAnimationTime  dateNext, TAnimationTime  date )  [inline, protected, virtual]

evalKey (runtime). Definition at line 68 of file track_bezier.h. References NLMISC::clamp(), s, and CTrackKeyFramerBezier< CKeyT, T >::TKeyValueType. { if(previous && next && !previous->Step) { // lerp from previous to cur. date-= datePrevious; date*= previous->OODeltaTime; NLMISC::clamp(date, 0,1); // Bezier interpolation. float s= date; float s2 = s * s; float s3 = s2 * s; float u = 1.0f - s; float u2 = u * u; float u3 = u2 * u; // compute Bezier control points from tangents. TKeyValueType cp0, cp1; // NB: loop case: dateNext is always > datePrevious.... cp0 = previous->Value + previous->OutTan * (dateNext-datePrevious) / 3.0f; cp1 = next->Value + next->InTan * (dateNext-datePrevious) / 3.0f; copyToValue(_Value.Value, previous->Value*u3 + cp0*3.0f*u2*s + cp1*3.0f*u*s2 + next->Value*s3); } else { if (previous) copyToValue(_Value.Value, previous->Value); else if (next) copyToValue(_Value.Value, next->Value); } }

template<class CKeyT, class T> virtual const IAnimatedValue& CTrackKeyFramerBezier< CKeyT, T >::getValue (   )  const [inline, virtual]

From ITrack. Definition at line 54 of file track_bezier.h. { return _Value; }

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Field Documentation

template<class CKeyT, class T> CAnimatedValueBlendable<T> CTrackKeyFramerBezier< CKeyT, T >::_Value [private]

Definition at line 118 of file track_bezier.h.

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

• track_bezier.h

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