#include <track_tcb.h>
Inheritance diagram for CTCBTools< CKeyT, T, TMapTimeCKey >:
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Definition at line 48 of file track_tcb.h.
Protected Types | |
| typedef TMapTimeCKey::iterator | TMapTimeCKeyIterator |
Protected Member Functions | |
| void | compileTCBEase (TMapTimeCKey &mapKey, bool loopMode) |
| compute TCB ease information. | |
| void | computeHermiteBasis (float d, float hb[4]) |
| void | computeTCBFactors (const CKeyT &key, float timeBefore, float time, float timeAfter, float rangeDelta, bool firstKey, bool endKey, bool isLoop, float &ksm, float &ksp, float &kdm, float &kdp) |
| float | ease (const CKeyT *key, float d) |
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Definition at line 51 of file track_tcb.h. |
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compute TCB ease information.
Definition at line 56 of file track_tcb.h. Referenced by CTrackKeyFramerTCB< CKeyTCBQuat, NLMISC::CAngleAxis >::compile(), and CTrackKeyFramerTCB< CKeyT, T >::compile().
00057 {
00058 TMapTimeCKeyIterator it= mapKey.begin();
00059 for(;it!=mapKey.end();it++)
00060 {
00061 TMapTimeCKeyIterator next= it;
00062 next++;
00063
00064 // loop mgt. must compute ease from last to first (usefull if _RangeLock is false).
00065 if(next==mapKey.end() && loopMode && mapKey.size()>1)
00066 next= mapKey.begin();
00067
00068 // Ease Precompute.
00069 //=================
00070 CKeyT &key= it->second;
00071 if(next!=mapKey.end())
00072 {
00073 float e0= it->second.EaseFrom;
00074 float e1= next->second.EaseTo;
00075 float s = e0 + e1;
00076
00077 // "normalize".
00078 if (s > 1.0f)
00079 {
00080 e0 = e0/s;
00081 e1 = e1/s;
00082 }
00083
00084 // precalc ease factors.
00085 key.Ease0= e0;
00086 key.Ease1= e1;
00087 key.EaseK= 1/(2.0f - e0 - e1);
00088 if(e0)
00089 key.EaseKOverEase0= key.EaseK / e0;
00090 if(e1)
00091 key.EaseKOverEase1= key.EaseK / e1;
00092 }
00093 else
00094 {
00095 // force ease() to just return d (see ease()).
00096 key.EaseK = 0.5f;
00097 }
00098
00099 }
00100 }
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Definition at line 121 of file track_tcb.h. Referenced by CTrackKeyFramerTCB< CKeyT, T >::evalKey().
00122 {
00123 float d2,d3,a;
00124
00125 d2 = d*d;
00126 d3 = d2*d;
00127 a = 3.0f*d2 - 2.0f*d3;
00128 hb[0] = 1.0f - a;
00129 hb[1] = a;
00130 hb[2] = d3 - 2.0f*d2 + d;
00131 hb[3] = d3 - d2;
00132 }
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Definition at line 136 of file track_tcb.h. Referenced by CTrackKeyFramerTCB< CKeyTCBQuat, NLMISC::CAngleAxis >::computeTCBKey(), and CTrackKeyFramerTCB< CKeyT, T >::computeTCBKey().
00138 {
00139 float fp,fn;
00140
00141 if(isLoop || (!firstKey && !endKey))
00142 {
00143 float dtm;
00144 // Compute Time deltas.
00145 if (firstKey)
00146 {
00147 dtm = 0.5f * (rangeDelta + timeAfter - time);
00148 fp = rangeDelta / dtm;
00149 fn = (timeAfter - time) / dtm;
00150 }
00151 else if (endKey)
00152 {
00153 dtm = 0.5f * (rangeDelta + time - timeBefore);
00154 fp = rangeDelta / dtm;
00155 fn = (time - timeBefore) / dtm;
00156 }
00157 else
00158 {
00159 dtm = 0.5f * (timeAfter - timeBefore);
00160 fp = (time - timeBefore) / dtm;
00161 fn = (timeAfter - time) / dtm;
00162 }
00163 float c= (float)fabs( key.Continuity );
00164 fp = fp + c - c * fp;
00165 fn = fn + c - c * fn;
00166 }
00167 else
00168 {
00169 // firstkey and lastkey of not loop track.
00170 fp = 1.0f;
00171 fn = 1.0f;
00172 }
00173
00174 // Compute tangents factors.
00175 float tm,cm,cp,bm,bp,tmcm,tmcp;
00176
00177 cm = 1.0f - key.Continuity;
00178 tm = 0.5f * ( 1.0f - key.Tension );
00179 cp = 2.0f - cm;
00180 bm = 1.0f - key.Bias;
00181 bp = 2.0f - bm;
00182 tmcm = tm*cm; tmcp = tm*cp;
00183
00184 // tgts factors.
00185 ksm = tmcm*bp*fp; ksp = tmcp*bm*fp;
00186 kdm = tmcp*bp*fn; kdp = tmcm*bm*fn;
00187
00188 }
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Definition at line 103 of file track_tcb.h. Referenced by CTrackKeyFramerTCB< CKeyTCBQuat, NLMISC::CAngleAxis >::evalKey(), and CTrackKeyFramerTCB< CKeyT, T >::evalKey().
00104 {
00105 if (d==0.0f || d==1.0f) return d;
00106 // k==0.5f <=> e0+e1 == 0.
00107 if (key->EaseK == 0.5f) return d;
00108
00109 if (d < key->Ease0)
00110 return key->EaseKOverEase0 * d*d;
00111 else if (d < 1.0f - key->Ease1)
00112 return key->EaseK * (2.0f*d - key->Ease0);
00113 else
00114 {
00115 d = 1.0f - d;
00116 return 1.0f - key->EaseKOverEase1 * d*d;
00117 }
00118 }
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1.3.6