const MinMax
Engine::findFrameRotation( const int nbit ) const {
MinMax minmax;
Skeleton skelWork = skel;
for ( int k = -framesPerCycle; k < framesPerCycle; ++k ) {
skelWork.rotate( 2*M_PI/(2*framesPerCycle) );
minmax.candidate( skelWork.findFrame( nbit, _x, _y, _color ) );
}
minmax.build();
return minmax;
}
const MinMax
Engine::findFrameTransition( const int nbit ) const {
MinMax minmax;
Skeleton skelWork( skel1.size() );
for ( int k = -framesPerCycle; k <= 0; ++k ) {
const float rate = ( 1 - cos( M_PI*k/framesPerCycle ) ) / 2;
skelWork.weightedMix( skel1, skel2, rate );
minmax.candidate( skelWork.findFrame( nbit, _x, _y, _color ) );
}
minmax.build();
return minmax;
}
