Re: Predicting Thumbnail Sizes from PIL

2005-09-11 Thread Fuzzyman
Fredrik Lundh wrote: [snip..] > > the algorithm is: > > x, y = im.size > if x > size[0]: y = max(y * size[0] / x, 1); x = size[0] > if y > size[1]: x = max(x * size[1] / y, 1); y = size[1] > size = x, y > > that is, it shrinks the image horizontally first, and it then shrinks the >

Re: Predicting Thumbnail Sizes from PIL

2005-09-11 Thread Fredrik Lundh
Roger wrote: > I need to calculate the thumbnail sizes PILL will produce from an image. > In most cases I can divide and round by adding .5, but PIL seems to > round differently on odd sized images. > > For example, I want to reduce an 800x816 image to have a maximum size of > 697. (697/816) * 80

Predicting Thumbnail Sizes from PIL

2005-09-11 Thread Roger
I need to calculate the thumbnail sizes PILL will produce from an image. In most cases I can divide and round by adding .5, but PIL seems to round differently on odd sized images. For example, I want to reduce an 800x816 image to have a maximum size of 697. (697/816) * 800 = 683.33, so my ro