下面的控制缩放没有看明白
//控制缩放范围 if((scale < mMaxScale && scaleFactor > 1.0f) ||(scale < mInitScale && scaleFactor < 1.0f)) { if(scale*scaleFactor < mInitScale){ scaleFactor = mInitScale/scale; } if(scale*scaleFactor > mMaxScale){ scale = mMaxScale/scale; } 没有明白是怎么回事?