changed RequiresExplicitCast to round if appropriate major refactoring for performance optimization
changed RequiresExplicitCast to round if appropriate
major refactoring for performance optimization

cha007/vigra,funkey/vigra,dagophil/vigra,martinsch/vigra,kod3r/vigra,dagophil/vigra,dagophil/vigra,DaveRichmond-/vigra,mmuellner/vigra,mmuellner/vigra,timoMa/vigra,hmeine/vigra,xiwei-zhang/vigra,capturePointer/vigra,cbecker/vigra,cbecker/vigra,ThomasWalter/vigra,mmuellner/vigra,mmuellner/vigra,DaveRichmond-/vigra,funkey/vigra,kod3r/vigra,dstoe/vigra,ThomasWalter/vigra,cha007/vigra,martinsch/vigra,timoMa/vigra,capturePointer/vigra,DaveRichmond-/vigra,kod3r/vigra,cha007/vigra,cha007/vigra,ThomasWalter/vigra,funkey/vigra,hmeine/vigra,DaveRichmond-/vigra,xiwei-zhang/vigra,cbecker/vigra,martinsch/vigra,xiwei-zhang/vigra,DaveRichmond-/vigra,martinsch/vigra,ThomasWalter/vigra,dstoe/vigra,hmeine/vigra,psteinb/vigra,dstoe/vigra,DaveRichmond-/vigra,cbecker/vigra,martinsch/vigra,stuarteberg/vigra,dagophil/vigra,dstoe/vigra,timoMa/vigra,mmuellner/vigra,martinsch/vigra,dstoe/vigra,psteinb/vigra,stuarteberg/vigra,dagophil/vigra,psteinb/vigra,capturePointer/vigra,xiwei-zhang/vigra,hmeine/vigra,hmeine/vigra,kod3r/vigra,mmuellner/vigra,cha007/vigra,xiwei-zhang/vigra,cbecker/vigra,timoMa/vigra,funkey/vigra,mmuellner/vigra,xiwei-zhang/vigra,capturePointer/vigra,timoMa/vigra,stuarteberg/vigra,psteinb/vigra,funkey/vigra,kod3r/vigra,psteinb/vigra,timoMa/vigra,stuarteberg/vigra,cha007/vigra,capturePointer/vigra,dstoe/vigra,ThomasWalter/vigra,funkey/vigra,stuarteberg/vigra,capturePointer/vigra,hmeine/vigra,hmeine/vigra,dagophil/vigra,ThomasWalter/vigra,kod3r/vigra,psteinb/vigra,psteinb/vigra,cha007/vigra,dstoe/vigra,stuarteberg/vigra,cbecker/vigra,stuarteberg/vigra,ThomasWalter/vigra,timoMa/vigra,funkey/vigra,dagophil/vigra,kod3r/vigra,xiwei-zhang/vigra,capturePointer/vigra,DaveRichmond-/vigra