float AnimationSegment::overlap( const AnimationSegment& seg ) const
{
if( mAnim != seg.getAnimation() )
return 0;
AnimationSegment seg1 = *this,
seg2 = seg;
if( seg2.mStartTime < seg1.mStartTime )
std::swap( seg1, seg2 );
float l_int = 0; // length of the intersection
if( seg2.mStartTime < seg1.mEndTime )
{
if( seg2.mEndTime <= seg1.mEndTime )
l_int = seg2.mEndTime - seg2.mStartTime;
else
l_int = seg1.mEndTime - seg2.mStartTime;
}
float l_seg = std::min<float>( seg1.mEndTime - seg1.mStartTime,
seg2.mEndTime - seg2.mStartTime ); // length of the shorter segment
return l_int/l_seg;
}
AnimationSegment AnimationSegment::merge( const AnimationSegment& seg ) const
{
if( mAnim != seg.getAnimation() )
return AnimationSegment( mAnim, 0, 0 );
AnimationSegment seg1 = *this,
seg2 = seg;
if( seg2.mStartTime < seg1.mStartTime )
std::swap( seg1, seg2 );
if( seg2.mStartTime < seg1.mEndTime )
{
if( seg2.mEndTime <= seg1.mEndTime )
return seg1;
else
return AnimationSegment( mAnim, seg1.mStartTime, seg2.mEndTime );
}
return AnimationSegment( mAnim, 0, 0 );
}