Settings v1

Server settings can be customized in _butterfly/settings.py directly. The following options are supported:

Server settings

PORT = 2001
MAX_CACHE_SIZE = 1*1024*1024*1024 #1GB default maximum cache size
SUPPRESS_CONSOLE_OUTPUT = False

Default port, maximum cache size, and the ability to suppress all information and logs printed to console.

Queries that will enable flags

ASSENT_LIST = ('yes', 'y', 'true')

List for accepted query values that enable the optional flags.

####Resize settings

ALWAYS_SUBSAMPLE = True
IMAGE_RESIZE_METHOD = cv2.INTER_LINEAR

If ALWAYS_SUBSAMPLE is on, subsampling will be used for all resizing calculations. This will greatly decrease time spent calculating different zoom levels, but results may look a little noisy.

For IMAGE_RESIZE_METHOD, see the OpenCV documentation on [cv2.resize()](http://docs.opencv.org/modules/imgproc/doc/geometric_transformations.html#void resize(InputArray src, OutputArray dst, Size dsize, double fx, double fy, int interpolation)) for a list of possible options.

####Output settings

DEFAULT_OUTPUT = '.png'
SUPPORTED_IMAGE_FORMATS = ('png', 'jpg', 'jpeg', 'tiff', 'tif', 'bmp')

Default output format and supported output image formats - see the OpenCV documentation on [cv2.imread()](http://docs.opencv.org/modules/highgui/doc/reading_and_writing_images_and_video.html#Mat imread(const string& filename, int flags)) for a list of supported formats.