50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
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#include <osg/AnimationPath>
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using namespace osg;
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void AnimationPath::insert(double time,const Key& key)
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{
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_timeKeyMap[time] = key;
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}
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bool AnimationPath::getMatrix(double time,Matrix& matrix)
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{
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if (_timeKeyMap.empty()) return false;
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TimeKeyMap::iterator second = _timeKeyMap.lower_bound(time);
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if (second==_timeKeyMap.begin())
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{
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second->second.getMatrix(matrix);
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}
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else if (second!=_timeKeyMap.end())
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{
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TimeKeyMap::iterator first = second;
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--first;
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// we have both a lower bound and the next item.
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// deta_time = second.time - first.time
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double delta_time = second->first - first->first;
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if (delta_time==0.0)
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first->second.getMatrix(matrix);
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else
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{
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Key key;
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key.interpolate((time - first->first)/delta_time,
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first->second,
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second->second);
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key.getMatrix(matrix);
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}
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}
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else // (second==_timeKeyMap.end())
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{
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_timeKeyMap.rbegin().base()->second.getMatrix(matrix);
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}
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return true;
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}
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bool AnimationPath::getInverse(double time,Matrix& matrix)
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{
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}
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