corrected computation of aspect ratio constraint
corrected computation of aspect ratio constraint

fniephaus/babelsberg-js,psieg/babelsberg-js,fniephaus/babelsberg-js,babelsberg/babelsberg-js,psieg/babelsberg-js,babelsberg/babelsberg-js,psieg/babelsberg-js,fniephaus/babelsberg-js,psieg/babelsberg-js,babelsberg/babelsberg-js,babelsberg/babelsberg-js,fniephaus/babelsberg-js