#include <track_tcb.h>
Inheritance diagram for CTCBTools< CKeyT, T, TMapTimeCKey >:
Nevrax France
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 } |