else

ImageFilters/imagefilters.py

@@ -0,0 +1,97 @@
+import PIL.Image
+
+KERNEL_GAUSSIAN_BLUR = [
+    [1, 2, 1],
+    [2, 3, 2],
+    [1, 2, 1],
+]
+KERNEL_EDGE_DETECTION_H = [
+    [-2, 0, 2],
+    [-2, 0, 2],
+    [-2, 0, 2],
+]
+def index_to_xy(index, width):
+    (y, x) = divmod(index, width)
+    return (x, y)
+
+def xy_to_index(x, y, width):
+    return (y * width) + x
+
+def apply_filter(old_image, kernel):
+    kernel_height = len(kernel)
+    kernel_width = len(kernel[0])
+    if (kernel_height % 2 != 1) or (kernel_width % 2 != 1):
+        raise ValueError('Kernel is not of odd size')
+
+    if any(len(segment) != kernel_width for segment in kernel):
+        raise ValueError('Kernel is of inconsistent size')
+
+    kernel_center = (kernel_width // 2, kernel_height // 2)
+    flat_kernel = list(flatten_list(kernel))
+    lower = min(flat_kernel)
+    lower = min(0, lower * 255)
+    upper = max(flat_kernel)
+    upper = max(255, upper * 255)
+    print(lower, upper)
+
+    (image_width, image_height) = old_image.size
+    old_pixels = old_image.getdata()
+    new_pixels = list(old_image.getdata())
+
+    for (index, old_pixel) in enumerate(old_pixels):
+        operation_sum = 0
+        operation_denominator = 0
+        (x, y) = index_to_xy(index, image_width)
+        #print(x, y, index)
+        for (kernel_y, kernel_row) in enumerate(kernel):
+            #print(kernel_row)
+            subject_y = y - (kernel_center[1] - kernel_y)
+            if subject_y < 0 or subject_y >= image_height:
+                continue
+            for (kernel_x, kernel_entry) in enumerate(kernel_row):
+                subject_x = x - (kernel_center[0] - kernel_x)
+                if subject_x < 0 or subject_x >= image_width:
+                    continue
+                subject = old_pixels[xy_to_index(subject_x, subject_y, image_width)]
+                #print(x, y, subject_x, subject_y, kernel_entry, subject)
+                operation_sum += kernel_entry * subject
+                operation_denominator += kernel_entry
+
+        operation_denominator = max(1, operation_denominator)
+        operation_avg = abs(operation_sum / operation_denominator)
+        #n_operation_avg = int(map_range(operation_avg, lower, upper, 0, 255))
+        if index % 4096 == 0:
+            print(x, y, operation_sum, operation_denominator, operation_avg)
+            #print(y, '/', image_height)
+        new_pixels[index] = operation_avg
+
+    #print(new_pixels)
+    new_image = PIL.Image.new('L', (old_image.size))
+    new_image.putdata(new_pixels, 1, 0)
+    #print(new_pixels)
+    #print(list(new_image.getdata()))
+    return new_image
+
+def flatten_list(li):
+    for element in li:
+        if hasattr(element, '__iter__'):
+            yield from flatten_list(element)
+        else:
+            yield element
+
+def map_range(x, old_low, old_high, new_low, new_high):
+    '''
+    Given a number x in range [old_low, old_high], return corresponding
+    number in range [new_low, new_high].
+    '''
+    if x > old_high or x < old_low:
+        raise ValueError('%d not in range [%d..%d]' % (x, old_low, old_high))
+    percentage = (x - old_low) / (old_high - old_low)
+    y = (percentage * (new_high - new_low)) + new_low
+    return y
+
+if __name__ == '__main__':
+    i = PIL.Image.open('ear.jpg')
+    i = i.convert('L')
+    i = apply_filter(apply_filter(i, KERNEL_GAUSSIAN_BLUR), KERNEL_EDGE_DETECTION_H)
+    i.save('ear.png')

Minecraft3DVector/README.md

@@ -0,0 +1,21 @@
+Minecraft 3D Vector
+===================
+
+Given one, two, or three square images, produce a 3-dimensional rendering of them as a block in glorious SVG.
+
+The svg has two layers. They contain identical shapes, but the lower one is slightly blurred. Although the shapes are aligned pretty well, some rendering engines create a 1px gap between shapes due to rounding. The blurred object helps fill these in. A mask is used to make sure the blur does not cause a halo around the edges. The seams still aren't perfect but they're pretty good, man.
+
+Because each pixel of each face produces two shapes, you should probably stick to small source images.
+
+##Usage:
+
+    > mc3dvector.py dirt.png
+    Creates a block with dirt on all sides
+
+    > mc3dvector.py tree_top.png tree_side.png
+    Creates a block with tree_top on the top, and tree_side on both sides.
+
+    > mc3dvector.py dirt.png gravel.png obsidian.png
+    Creates a block with dirt on top, gravel on the left, and obsidian on the right.
+
+The images do not need to be the same size as each other, but they each must be square.

Minecraft3DVector/mc3dvector.py

@@ -0,0 +1,200 @@
+TEMPLATE_PRIMARY = '''
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
+    xmlns:cc="http://creativecommons.org/ns#"
+    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+    xmlns:svg="http://www.w3.org/2000/svg"
+    xmlns="http://www.w3.org/2000/svg"
+    version="1.1"
+    id="svg2"
+    viewBox="0 0 744.09448819 1052.3622047"
+    height="297mm"
+    width="210mm" >
+    <defs id="defs4" >
+        <filter
+            id="filter20779"
+            style="color-interpolation-filters:sRGB" />
+        <filter
+            style="color-interpolation-filters:sRGB"
+            id="filter26457"
+            x="-0.012382473"
+            width="1.0247649"
+            y="-0.011640447"
+            height="1.0232809" >
+
+            <feGaussianBlur
+                id="feGaussianBlur26459"
+                stdDeviation="3.2073868" />
+        </filter>
+        <mask
+            id="mask26461"
+            maskUnits="userSpaceOnUse" >
+                <g
+                    style="fill:#ffffff;fill-opacity:1;stroke:none"
+                    transform="matrix(1.5199904,0,0,1.5199673,-1612.5515,-1151.5565)"
+                    id="g26463" >
+                        <path
+                            id="path26465"
+                            transform="matrix(0.65789889,0,0,0.65790889,1060.8942,757.62709)"
+                            d="
+                             M 682.8789,715.34763
+                             682.857,337.12518
+                             372.03711,195.5332
+                             61.221001,337.25218
+                             61.220697,715.32812
+                             372.041,856.80518 Z"
+                            style="
+                            opacity:1;
+                            fill:#ffffff;
+                            fill-opacity:1;
+                            fill-rule:nonzero;
+                            stroke:none;
+                            stroke-width:3.34395361;
+                            stroke-linecap:round;
+                            stroke-linejoin:miter;
+                            stroke-miterlimit:4;
+                            stroke-dasharray:none;
+                            stroke-dashoffset:0;
+                            stroke-opacity:1" />
+                </g>
+        </mask>
+    </defs>
+    <g
+    id="layer1">
+        <g
+        mask="url(#mask26461)"
+        style="filter:url(#filter26457)" id="g24913" >
+            <g
+            transform="matrix(1.0361037,-0.47199221,1.0361037,0.47199221,-801.62397,128.09956)"
+            style="fill:#000000;fill-opacity:1" >
+                {elements_top}
+            </g>
+            <g
+            transform="matrix(-1.0361028,0.47161497,0,1.2603136,884.86634,-558.55115)"
+            style="fill:#000000;fill-opacity:1" >
+                {elements_left}
+            </g>
+            <g
+            transform="matrix(1.0361028,0.47161497,0,1.2603136,-140.77133,-558.55239)"
+            style="fill:#000000;fill-opacity:1;stroke:none;stroke-opacity:1" >
+                {elements_right}
+            </g>
+        </g>
+        <g
+        mask="url(#mask26461)"
+        >
+            <g
+            transform="matrix(1.0361037,-0.47199221,1.0361037,0.47199221,-801.62397,128.09956)"
+            style="fill:#000000;fill-opacity:1" >
+                {elements_top}
+            </g>
+            <g
+            transform="matrix(-1.0361028,0.47161497,0,1.2603136,884.86634,-558.55115)"
+            style="fill:#000000;fill-opacity:1" >
+                {elements_left}
+            </g>
+            <g
+            transform="matrix(1.0361028,0.47161497,0,1.2603136,-140.77133,-558.55239)"
+            style="fill:#000000;fill-opacity:1;stroke:none;stroke-opacity:1" >
+                {elements_right}
+            </g>
+        </g>
+    </g>
+</svg>
+'''
+TEMPLATE_PIXEL = '''
+            <path
+                d="m {x},{y} {pixsize},0 0,{pixsize} -{pixsize},0 z"
+                id="{id}"
+                style="opacity:{opacity};fill:#{color}"
+                />
+'''
+import os
+import PIL.Image
+import random
+import sys
+
+# These numbers are MAGIC, and only work because of how the template was made.
+SQUARE_WIDTH = 300
+START_X = 194.94924
+START_Y = 637.82417
+
+def hexadecimal(i):
+    i = hex(i)[2:]
+    width = 2 - (len(i) % 2)
+    if width == 2: width = 0
+    i = ('0'*width) + i
+    return i
+
+def mirror(image, direction):
+    new_image = image.copy()
+    for y in range(image.size[1]):
+        for x in range(image.size[0]):
+            pixel = image.getpixel((x, y))
+            if direction == 'horizontal':
+                x = (image.size[0] - 1) - x
+            elif direction == 'vertical':
+                y = (image.size[1] - 1) - y
+            new_image.putpixel((x, y), pixel)
+    return new_image
+
+
+def vectorize(filenames):
+    images = [PIL.Image.open(f) for f in filenames]
+    if len(images) == 1:
+        images = [images[0], images[0], images[0]]
+    elif len(images) == 2:
+        images = [images[0], images[1], images[1]]
+    elif len(images) == 3:
+        pass
+    else:
+        raise ValueError('Invalid number of images supplied')
+
+    images[0] = images[0].rotate(270)
+    images[2] = mirror(images[2], 'horizontal')
+    elements_total = []
+    for (image_index, image) in enumerate(images):
+        elements_local = []
+        width = image.size[0]
+        step = SQUARE_WIDTH / width
+        pixsize = SQUARE_WIDTH / width
+        for y in range(width):
+            y_point = START_Y + (y * step)
+            for x in range(width):
+                x_point = START_X + (x * step)
+                color = image.getpixel((x, y))
+
+                opacity = 1
+                if isinstance(color, int):
+                    color = hexadecimal(color) * 3
+                elif isinstance(color, tuple):
+                    if len(color) == 4:
+                        opacity = color[3] / 255
+                    if len(color) >= 3:
+                        color = ''.join(hexadecimal(channel) for channel in color[:3])
+
+                element = TEMPLATE_PIXEL.format(
+                    x=x_point,
+                    y=y_point,
+                    opacity=opacity,
+                    pixsize=pixsize,
+                    color=color,
+                    id='face_%d_%d' % (image_index, x + (y*width)))
+                elements_local.append(element)
+        elements_total.append(elements_local)
+
+    elements_total = [''.join(elements) for elements in elements_total]
+    image = TEMPLATE_PRIMARY.format(elements_top=elements_total[0], elements_right=elements_total[1], elements_left=elements_total[2])
+    image = image.strip()
+
+    basenames = [os.path.splitext(f)[0] for f in filenames]
+    outputname = '+'.join(basenames) + '.svg'
+    print(outputname)
+    f = open(outputname, 'w')
+    f.write(image)
+    f.close()
+
+if __name__ == '__main__':
+    filenames = sys.argv[1:]
+    vectorize(filenames)

OpenDirDL/opendirdl.py

@@ -1,87 +1,107 @@
-'''
+DOCSTRING='''
 OpenDirDL
 downloads open directories
 
-Usage:
+The basics:
+1. Create a database of the directory's files with
+   > opendirdl digest http://website.com/directory/
+2. Enable and disable the files you are interested in with
+   > opendirdl remove_pattern ".*"
+   > opendirdl keep_pattern "Daft%20Punk"
+   > opendirdl remove_pattern "folder\.jpg"
+   Note the percent-encoded string.
+3. Download the enabled files with
+   > opendirdl download database.db
 
-DIGEST:
+Specifics:
+
+digest:
     Recursively fetch directories and build a database of file URLs.
 
-    > opendirdl digest !clipboard <flags>
     > opendirdl digest http://website.com/directory/ <flags>
+    > opendirdl digest !clipboard <flags>
 
     flags:
     -f | --fullscan:
-        When included, perform HEAD requests on all files, to know the size of the entire directory.
+        When included, perform HEAD requests on all files, to know the size of
+        the entire directory.
 
     -db "x.db" | --databasename "x.db":
-        Use a custom database filename. By default, databases are named after the web domain.
+        Use a custom database filename. By default, databases are named after
+        the web domain.
 
-DOWNLOAD:
-    Download the files whose URLs are enabled in the database.
+download:
+    Download the files whose URLs are Enabled in the database.
 
     > opendirdl download website.com.db <flags>
 
     flags:
     -o "x" | --outputdir "x":
-        Save the files to a custom directory, "x". By default, files are saved to a folder named
-        after the web domain.
+        Save the files to a custom directory, "x". By default, files are saved
+        to a folder named after the web domain.
 
     -ow | --overwrite:
-        When included, download and overwrite files even if they already exist in the output directory.
+        When included, download and overwrite files even if they already exist
+        in the output directory.
 
     -bps 100 | --bytespersecond 100:
-        Ratelimit yourself to downloading at 100 BYTES per second. The webmaster will appreciate this.
+        Ratelimit yourself to downloading at 100 BYTES per second.
+        The webmaster will appreciate this.
 
-KEEP_PATTERN:
-    Enable URLs which match a regex pattern. Matches are based on the percent-encoded strings!
+keep_pattern:
+    Enable URLs which match a regex pattern. Matches are based on the percent-
+    encoded strings!
 
-    > opendirdl keep_pattern website.com.db ".*"
+    > opendirdl keep_pattern database.db ".*"
 
-REMOVE_PATTERN:
-    Disable URLs which match a regex pattern. Matches are based on the percent-encoded strings!
+remove_pattern:
+    Disable URLs which match a regex pattern. Matches are based on the percent-
+    encoded strings!
 
-    > opendirdl remove_pattern website.com.db ".*"
+    > opendirdl remove_pattern database.db ".*"
 
-LIST_BASENAMES:
-    List enabled URLs in order of their base filename. This makes it easier to find titles of
-    interest in a directory that is very scattered or poorly organized.
+list_basenames:
+    List enabled URLs in order of their base filename. This makes it easier to
+    find titles of interest in a directory that is very scattered or poorly
+    organized.
 
     > opendirdl list_basenames website.com.db <flags>
 
     flags:
     -o "x.txt" | --outputfile "x.txt":
-        Output the results to a file instead of stdout. This is useful if the filenames contain
-        special characters that crash Python, or are so long that the console becomes unreadable.
+        Output the results to a file instead of stdout. This is useful if the
+        filenames contain special characters that crash Python, or are so long
+        that the console becomes unreadable.
 
-MEASURE:
-    Sum up the filesizes of all enabled URLs.
+measure:
+    Sum up the filesizes of all Enabled URLs.
 
-    > opendirdl measure website.com.db <flags>
+    > opendirdl measure database.db <flags>
 
     flags:
     -f | --fullscan:
-        When included, perform HEAD requests on any URL whose size is not known. If this flag is
-        not included, and some file's size is unkown, you will receive a printed note.
+        When included, perform HEAD requests when a file's size is not known.
+        If this flag is not included, and some file's size is unkown, you will
+        receive a printed note.
 '''
 
-# Module names preceeded by two hashes indicate modules that are imported during
+
+# Module names preceeded by `## ~` indicate modules that are imported during
 # a function, because they are not used anywhere else and we don't need to waste
 # time importing them usually.
-
 import sys
 
 sys.path.append('C:\\git\\else\\ratelimiter'); import ratelimiter
 
 import argparse
-## import bs4
-## import hashlib
+## ~import bs4
+## ~import hashlib
 import os
-## import re
+## ~import re
 import requests
 import shutil
 import sqlite3
-## tkinter
+## ~tkinter
 import urllib.parse
 
 FILENAME_BADCHARS = '/\\:*?"<>|'
@@ -249,6 +269,7 @@ class Walker:
             databasename = databasename.replace(':', '')
         self.databasename = databasename
 
+        safeprint('Opening %s' % self.databasename)
         self.sql = sqlite3.connect(self.databasename)
         self.cur = self.sql.cursor()
         db_init(self.sql, self.cur)
@@ -269,7 +290,7 @@ class Walker:
         External links, index sort links, and desktop.ini are discarded.
         '''
         import bs4
-        soup = bs4.BeautifulSoup(response.text)
+        soup = bs4.BeautifulSoup(response.text, 'html.parser')
         elements = soup.findAll(tag)
         for element in elements:
             try:
@@ -615,10 +636,10 @@ def filter_pattern(databasename, regex, action='keep', *trash):
 
             should_keep = (keep and contains)
             if keep and contains and not current_do_dl:
-                safeprint('Keeping "%s"' % url)
+                safeprint('Enabling "%s"' % url)
                 cur.execute('UPDATE urls SET do_download = 1 WHERE url == ?', [url])
             if remove and contains and current_do_dl:
-                safeprint('Removing "%s"' % url)
+                safeprint('Disabling "%s"' % url)
                 cur.execute('UPDATE urls SET do_download = 0 WHERE url == ?', [url])
     sql.commit()
 
@@ -735,6 +756,9 @@ def remove_pattern(args):
 
 
 if __name__ == '__main__':
+    if listget(sys.argv, 1, '').lower() in ('help', '-h', '--help'):
+        print(DOCSTRING)
+        quit()
     parser = argparse.ArgumentParser()
     subparsers = parser.add_subparsers()
 
@@ -758,7 +782,7 @@ if __name__ == '__main__':
 
     p_list_basenames = subparsers.add_parser('list_basenames')
     p_list_basenames.add_argument('databasename')
-    p_list_basenames.add_argument('-o', '--outputfile', dest='outputfile', default=None)
+    p_list_basenames.add_argument('outputfile', nargs='?', default=None)
     p_list_basenames.set_defaults(func=list_basenames)
 
     p_measure = subparsers.add_parser('measure')

RateMeter/README.md

@@ -0,0 +1,4 @@
+RateMeter
+=========
+
+Provides a `RateMeter` class to measure the speed of something. Create an instance with the appropriate `span`, and call `meter.digest(x)` where `x` is the number of units processed. Later, call `meter.report()` to receive the current speed information.

RateMeter/ratemeter.py

@@ -8,14 +8,10 @@ class RateMeter:
         This class is used to calculate a rolling average of
         units per second over `span` seconds.
 
-        Minimum span is 1 second.
-
         Set `span` to None to calculate unit/s over the lifetime of the object
         after the first digest, rather than over a span.
         This saves the effort of tracking timestamps. Don't just use a large number!
         '''
-        if span is not None and span < 1:
-            raise ValueError('Span must be >= 1')
         self.sum = 0
         self.span = span
 
@@ -23,10 +19,9 @@ class RateMeter:
         self.first_digest = None
 
     def digest(self, value):
-        now = math.ceil(time.time())
+        now = time.time()
         self.sum += value
 
-
         if self.span is None:
             if self.first_digest is None:
                 self.first_digest = now

RateMeter/speedtest.py

@@ -4,8 +4,8 @@ import ratemeter
 import requests
 import time
 
-URL = 'http://cdn.speedof.me/sample32768k.bin?r=0.8817502672426312'
-METER = ratemeter.RateMeter(span=10)
+URL = 'http://cdn.speedof.me/sample32768k.bin?r=0.881750426312'
+METER = ratemeter.RateMeter(span=5)
 METER_2 = ratemeter.RateMeter(span=None)
 class G:
     pass
@@ -13,7 +13,7 @@ class G:
 g = G()
 g.total = 0
 g.start = None
-g.last = int(time.time())
+g.last = time.time()
 
 def callback_progress(bytes_downloaded, bytes_total):
     if g.start is None:
@@ -25,7 +25,7 @@ def callback_progress(bytes_downloaded, bytes_total):
     METER.digest(chunk)
     METER_2.digest(chunk)
     now = round(time.time(), 1)
-    if now > g.last:
+    if now > g.last or (bytes_downloaded >= bytes_total):
         g.last = now
         percent = percent.rjust(9, ' ')
         rate = bytestring.bytestring(METER.report()[2]).rjust(15, ' ')
@@ -35,5 +35,5 @@ def callback_progress(bytes_downloaded, bytes_total):
         #print(METER.report(), METER_2.report())
 
 print(URL)
-print('Progress'.rjust(9, ' '), 'bps over 10s'.rjust(15, ' '), 'bps overall'.rjust(15, ' '), 'elapsed'.rjust(10, ' '))
+print('Progress'.rjust(9, ' '), 'bps over 5s'.rjust(15, ' '), 'bps overall'.rjust(15, ' '), 'elapsed'.rjust(10, ' '))
 downloady.download_file(URL, 'nul', callback_progress=callback_progress)

Ratelimiter/README.md

@@ -0,0 +1,6 @@
+Ratelimiter
+===========
+
+Provides a `Ratelimiter` class to regulate timing. Create an instance with the appropriate allowance and timing rules, then just call `limiter.limit()` in your loop.
+
+Note that allowance=10, period=10 is not the same as allowance=1, period=1. The first allows for more "burstiness" because all 10 operations can happen in the first second, as long as you wait for the other 9.

Ratelimiter/ratelimiter.py

@@ -2,10 +2,10 @@ import time
 
 
 class Ratelimiter:
-    def __init__(self, allowance_per_period, period, operation_cost=1, mode='sleep'):
+    def __init__(self, allowance_per_period, period=1, operation_cost=1, mode='sleep'):
         '''
         allowance_per_period:
-            The number of operations we can perform per `period` seconds.
+            Our spending balance per `period` seconds.
 
         period:
             The number of seconds over which we can perform `allowance_per_period` operations.
@@ -15,12 +15,17 @@ class Ratelimiter:
             Pass a `cost` parameter to `self.limit` to use a nondefault value.
 
         mode:
-            'sleep':  If we do not have the balance for an operation, sleep until we do.
-                      Return True every time.
-            'reject': If we do not have the balance for an operation, return False.
+            'sleep':
+                If we do not have the balance for an operation, sleep until we do.
+                Return True every time.
+
+            'reject':
+                If we do not have the balance for an operation, return False.
+                The cost is not subtracted, so hopefully we have enough next time.
         '''
         if mode not in ('sleep', 'reject'):
             raise ValueError('Invalid mode %s' % repr(mode))
+
         self.allowance_per_period = allowance_per_period
         self.period = period
         self.operation_cost = operation_cost
@@ -28,29 +33,34 @@ class Ratelimiter:
 
         self.last_operation = time.time()
         self.balance = 0
-        self.gain_rate = allowance_per_period / period
+
+    @property
+    def gain_rate(self):
+        return self.allowance_per_period / self.period
 
     def limit(self, cost=None):
+        '''
+        See the main class docstring for info about cost and mode behavior.
+        '''
         if cost is None:
             cost = self.operation_cost
-        timediff = time.time() - self.last_operation
-        self.balance += timediff * self.gain_rate
+
+        time_diff = time.time() - self.last_operation
+        self.balance += time_diff * self.gain_rate
         self.balance = min(self.balance, self.allowance_per_period)
-        successful = False
 
-        deficit = cost - self.balance
-        if deficit > 0 and self.mode == 'sleep':
-            time_needed = (deficit / self.gain_rate)
-            #print(self.balance, deficit, 'Need to sleep %f' % time_needed)
-            time.sleep(time_needed)
-            self.balance = cost
-
-        #print(self.balance)
         if self.balance >= cost:
-            #print('pass')
             self.balance -= cost
-            successful = True
+            succesful = True
+        else:
+            if self.mode == 'reject':
+                succesful = False
+            else:
+                deficit = cost - self.balance
+                time_needed = deficit / self.gain_rate
+                time.sleep(time_needed)
+                self.balance = 0
+                succesful = True
 
         self.last_operation = time.time()
-
-        return successful
+        return succesful

SinWave/sinwave.py

@@ -0,0 +1,270 @@
+import math
+import random
+import string
+import threading
+import time
+import tkinter
+
+# Nice patterns
+# 0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, 255, 270, 285, 300, 315, 330, 345
+# 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330
+# 0, 15, 30, 45, 60, 180, 195, 210, 225, 240
+# 0, 90, 180, 270
+# ░▒▓
+
+SCREEN_WIDTH = 114
+
+DEFAULT_LINE = {
+    'character': '#',
+    'degree': 0,
+    'degree_step': 1,
+    'horizontal_offset': 0,
+    'line_thickness': 1,
+    'original_degree': 0,
+    'damping': 3,
+    'depth': 0,
+}
+variables = {
+    'clock': 0,
+    'frames':[],
+    'delay': 0.01,
+    'lines':[
+    ]
+}
+
+class LineControl(tkinter.Frame):
+    def __init__(self, master, line, *args, **kwargs):
+        tkinter.Frame.__init__(self, master, *args, **kwargs)
+
+        self.line = line
+        for x in range(4):
+            self.columnconfigure(x, minsize=40)
+        row = 0
+        tkinter.Button(self, text='\u21bb', command=self.refresh).grid(row=row, column=0, sticky='news')
+        tkinter.Button(self, text='Clone', command=self.clone).grid(row=row, column=1, columnspan=2, sticky='news')
+        tkinter.Button(self, text='X', command=self.suicide).grid(row=row, column=3, sticky='news')
+        row += 1
+
+        tkinter.Label(self, text='Degree:').grid(row=row, column=0, sticky='e')
+        self.entry_degree = tkinter.Entry(self, width=3)
+        self.entry_degree.insert(0, self.line['original_degree'])
+        self.entry_degree.grid(row=row, column=1, sticky='news')
+        tkinter.Button(self, text='Set', command=self.apply_degree).grid(row=row, column=2, sticky='news')
+        row += 1
+
+        def create_buttonpair(key, row):
+            minus = tkinter.Button(self, text='-', command=lambda *a: self.step_variable(key, -1, self.value_labels[key]))
+            minus.grid(row=row, column=1, sticky='news')
+            plus = tkinter.Button(self, text='+', command=lambda *a: self.step_variable(key, +1, self.value_labels[key]))
+            plus.grid(row=row, column=2, sticky='news')
+
+        self.value_labels = {}
+        tkinter.Label(self, text='Step:').grid(row=row, column=0, sticky='e')
+        create_buttonpair('degree_step', row)
+        self.value_labels['degree_step'] = tkinter.Label(self, text=str(self.line['degree_step']))
+        self.value_labels['degree_step'].grid(row=row, column=3)
+        row += 1
+
+        tkinter.Label(self, text='Thick:').grid(row=row, column=0, sticky='e')
+        create_buttonpair('line_thickness', row)
+        self.value_labels['line_thickness'] = tkinter.Label(self, text=str(self.line['line_thickness']))
+        self.value_labels['line_thickness'].grid(row=row, column=3)
+        row += 1
+
+        tkinter.Label(self, text='Offset:').grid(row=row, column=0, sticky='e')
+        create_buttonpair('horizontal_offset', row)
+        self.value_labels['horizontal_offset'] = tkinter.Label(self, text=str(self.line['horizontal_offset']))
+        self.value_labels['horizontal_offset'].grid(row=row, column=3)
+        row += 1
+
+        tkinter.Label(self, text='Dampen:').grid(row=row, column=0, sticky='e')
+        create_buttonpair('damping', row)
+        self.value_labels['damping'] = tkinter.Label(self, text=str(self.line['damping']))
+        self.value_labels['damping'].grid(row=row, column=3)
+        row += 1
+
+        tkinter.Label(self, text='Depth:').grid(row=row, column=0, sticky='e')
+        create_buttonpair('depth', row)
+        self.value_labels['depth'] = tkinter.Label(self, text=str(self.line['depth']))
+        self.value_labels['depth'].grid(row=row, column=3)
+        row += 1
+
+        tkinter.Label(self, text='Char:').grid(row=row, column=0, sticky='e')
+        self.entry_character = tkinter.Entry(self, width=2, font=('Consolas', 12))
+        self.entry_character.grid(row=row, column=1, sticky='news')
+        self.entry_character.insert(0, self.line['character'])
+        tkinter.Button(self, text='Set', command=self.apply_character).grid(row=row, column=2, sticky='news')
+        row += 1
+
+    def apply_character(self, *trash):
+        char = self.entry_character.get()
+        try:
+            assert len(char) == 1
+        except:
+            return
+        self.line['character'] = char
+
+    def apply_degree(self, *trash):
+        value = self.entry_degree.get()
+        try:
+            value = int(value)
+        except ValueError:
+            return
+        self.line['original_degree'] = value % 360
+        self.refresh()
+        regrid_frames()
+
+    def clone(self, *trash):
+        line = self.line.copy()
+        create_line_frame(line=line)
+        regrid_frames()
+
+    def refresh(self, *trash):
+        self.line['degree'] = self.line['original_degree'] + (self.line['degree_step'] * variables['clock'])
+
+    def step_variable(self, key, direction, label):
+        value = self.line[key]
+        value += direction
+
+        if key == 'line_thickness':
+            value = max(value, 0)
+        elif key == 'horizontal_offset':
+            value = value % SCREEN_WIDTH
+        elif key == 'delay':
+            value = max(value, 0.001)
+        elif key in ('damping', 'depth'):
+            value = max(value, 0)
+            value = min(value, int(SCREEN_WIDTH / 2))
+
+        self.line[key] = value
+        label.configure(text=str(value)[:5])
+
+    def suicide(self, *trash):
+        unregister_line(self.line)
+        variables['frames'].remove(self)
+        self.grid_forget()
+        regrid_frames()
+
+def create_line(degree_offset, **kwargs):
+    line = DEFAULT_LINE.copy()
+    line.update(kwargs)
+    line['original_degree'] = degree_offset
+    line['degree'] = (variables['clock'] + degree_offset) % 360
+    # Line ID exists solely to make sure that even clones are unique.
+    line['id'] = random.getrandbits(32)
+    return line
+
+def create_line_frame(offset=None, line=None):
+    if line is None:
+        if offset is None:
+            offset = entry_add.get()
+            offset = offset.replace(' ', '')
+            offset = offset.split(',')
+            try:
+                offset = [int(o) for o in offset]
+            except ValueError:
+                return
+            entry_add.delete(0, 'end')
+
+        lines = []
+        for x in offset:
+            line = create_line(x)
+            lines.append(line)
+    else:
+        line['id'] = random.getrandbits(32)
+        lines = [line]
+
+    for line in lines:
+        register_line(line)
+        frame = LineControl(t, line, relief='groove', borderwidth=2)
+        variables['frames'].append(frame)
+    regrid_frames()
+
+def map_range(x, old_low, old_high, new_low, new_high):
+    '''
+    Given a number x in range [old_low, old_high], return corresponding
+    number in range [new_low, new_high].
+    '''
+    if x > old_high or x < old_low:
+        raise ValueError('%d not in range [%d..%d]' % (x, old_low, old_high))
+    percentage = (x - old_low) / (old_high - old_low)
+    y = (percentage * (new_high - new_low)) + new_low
+    return y
+
+def position_from_degree(d, damping_units):
+    rad = math.radians(d)
+    sin = math.sin(rad)
+    sin = map_range(sin, -1, 1, 0, 1)
+    position = sin * (SCREEN_WIDTH - 1)
+    position = map_range(position, 0, SCREEN_WIDTH, damping_units, SCREEN_WIDTH-damping_units)
+    #position = (position * (1- (2 * damping_percent))) + damping_units
+    position = round(position)
+    position = position % SCREEN_WIDTH
+    return position
+
+def print_loop():
+    while True:
+        next_frame = time.time() + variables['delay']
+        variables['clock'] = (variables['clock'] + 1) % 360
+
+        screen = ([' '] * SCREEN_WIDTH)
+        z_indexes = {}
+
+        for line_vars in variables['lines']:
+            start_degree = line_vars['degree']
+            end_degree = (start_degree + line_vars['degree_step']) % 360
+            line_vars['degree'] = end_degree
+
+            damping = line_vars['damping']
+            start_pos = position_from_degree(start_degree, damping)
+            end_pos = position_from_degree(end_degree, damping)
+            (start_pos, end_pos) = sorted([start_pos, end_pos])
+
+            start_pos -= line_vars['line_thickness']
+            end_pos += line_vars['line_thickness']
+
+            mini_step = line_vars['degree_step'] / max((end_pos - start_pos), 1)
+            for (index, position) in enumerate(range(start_pos, end_pos+1)):
+                position = (position + line_vars['horizontal_offset']) % SCREEN_WIDTH
+                this_rads = math.radians(start_degree + (mini_step * index))
+                z_index = math.cos(this_rads)
+                z_index = map_range(z_index, -1, 1, line_vars['depth'], SCREEN_WIDTH-line_vars['depth'])
+                #print(line_vars['character'], z_index)
+                if z_index > z_indexes.get(position, -2):
+                    screen[position] = line_vars['character']
+                    z_indexes[position] = z_index
+
+        print('%03d' % variables['clock'], ''.join(screen))
+        delay = max(next_frame - time.time(), 0)
+        time.sleep(delay)
+
+def register_line(line):
+    variables['lines'].append(line)
+
+def regrid_frames():
+    frames = variables['frames']
+    #frames.sort(key=lambda x: x.line['original_degree'])
+    for (index, frame) in enumerate(frames):
+        (row, column) = divmod(index, 4)
+        row += 1
+        frame.grid(row=row, column=column)
+
+def unregister_line(line):
+    variables['lines'].remove(line)
+
+t = tkinter.Tk()
+
+frame_add = tkinter.Frame(t)
+entry_add = tkinter.Entry(frame_add)
+entry_add.grid(row=0, column=0)
+tkinter.Button(frame_add, text='+', command=create_line_frame).grid(row=0, column=1)
+frame_add.grid(row=0, column=0)
+
+frame_delay = tkinter.Frame(t)
+tkinter.Label(frame_delay, text='Speed:')
+thread = threading.Thread(target=print_loop)
+thread.daemon=True
+thread.start()
+
+create_line_frame([0])
+t.mainloop()

Steganographic/README.md

@@ -1,7 +1,16 @@
 Steganographic
 ==============
 
-    2015 01 15:
+    2016 05 12:
+        Now pads the remaining pixels with random data. Previously, the fact that the secret
+        file resided in only as many pixels as it needed meant there was a sudden decrease in
+        visual noise when the secret ended. Now there is noise throughout.
+        Your secret file should resemble random noise for this to be effective. Thus
+        encryption is recommended.
+        This does not change decoding, because the decoder only reads as many bytes as
+        needed.
+
+    2016 01 15:
         Now supports variable "bitness", the number of bits per color channel to overwrite.
         Previously, bitness was always 1, to maximize transparency.
         Now, bitness can be 1-8 to favor transparency or information density.

Steganographic/steganographic.py

@@ -178,10 +178,6 @@ def set_bit(number, index, newvalue):
   ####      ##    ####      ####      ####    ####      ####  ####        ####  ####        ####      ##
 ##############    ####      ####        ########          ######        ##########        ##############
 def encode(imagefilename, secretfilename, bitness=1):
-    global image
-    global pixel
-    global pixel_index
-    global channel_index
     pixel_index = 0
     channel_index = 0
 
@@ -198,18 +194,18 @@ def encode(imagefilename, secretfilename, bitness=1):
     image = Image.open(imagefilename)
     image_steg = BitsToImage(image, bitness)
 
-    totalpixels = image.size[0] * image.size[1]
-    if totalpixels < HEADER_SIZE:
+    total_pixels = image.size[0] * image.size[1]
+    if total_pixels < HEADER_SIZE:
         raise StegError('Image cannot have fewer than %d pixels. They are used to store Secret\'s length' % HEADER_SIZE)
 
     secret_extension = os.path.splitext(secretfilename)[1][1:]
     secret_content_length = (secret_size) + (len(secret_extension)) + 1
     requiredpixels = math.ceil(((secret_content_length * 8) + 32) / (3 * bitness))
-    if totalpixels < requiredpixels:
+    if total_pixels < requiredpixels:
         raise StegError('Image does not have enough pixels to store the Secret. '
                         'Must have at least %d pixels' % requiredpixels)
 
-    print('%d pixels available, %d required' % (totalpixels, requiredpixels))
+    print('%d pixels available, %d required' % (total_pixels, requiredpixels))
 
     # --> YOU ARE HERE <--
 
@@ -226,23 +222,40 @@ def encode(imagefilename, secretfilename, bitness=1):
 
     # Write the secret data
     bytes_written = 0
-    done = False
-    secretfile = open(secretfilename, 'rb')
-    while not done:
-        if bytes_written % 1024 == 0:
-            percentage = (bytes_written + 1) / secret_size
-            percentage = '%07.3f%%\r' % (100 * percentage)
-            print(percentage, end='')
+    one_complete_file = False
 
-        bytes = secretfile.read(FILE_READ_SIZE)
+    # Yes, we're assuming the whole file fits in memory.
+    secret_file = open(secretfilename, 'rb')
+    secret_data = secret_file.read()
+    secret_data_size = len(secret_data)
+    secret_index = 0
+    for pixel_number in range(total_pixels):
+        if pixel_number % 4 == 0:
+            #percentage = (bytes_written + 1) / secret_size
+            #percentage = '%07.3f%%\r' % (100 * percentage)
+            #print(percentage, end='')
+            print(pixel_number)
 
-        done = len(bytes) == 0
+        secret_chunk = secret_data[secret_index:secret_index+FILE_READ_SIZE]
+        secret_index += FILE_READ_SIZE
+        if len(secret_chunk) < FILE_READ_SIZE:
+            one_complete_file = True
+            #secret_index = 0
+            rs = FILE_READ_SIZE - len(secret_chunk)
+            secret_chunk += os.urandom(rs)
+            #secret_chunk += secret_data[secret_index:secret_index+rs]
 
-        bytes = list(bytes)
-        bytes = [binary(byte) for byte in bytes]
-        bytes_written += len(bytes)
-        bytes = ''.join(bytes)
-        image_steg.write(bytes)
+        secret_chunk = list(secret_chunk)
+        secret_chunk = [binary(byte) for byte in secret_chunk]
+        bytes_written += len(secret_chunk)
+        secret_chunk = ''.join(secret_chunk)
+        try:
+            image_steg.write(secret_chunk)
+        except IndexError:
+            if one_complete_file:
+                break
+            else:
+                raise
 
     # haha
     print('100.000%')
@@ -271,7 +284,6 @@ def encode(imagefilename, secretfilename, bitness=1):
   ####  ####        ####      ##      ####    ####      ####  ####        ####  ####        ####      ##
 ##########        ##############        ########          ######        ##########        ##############
 def decode(imagefilename, bitness=1):
-
     print('Extracting content from "%s"' % imagefilename)
     image = Image.open(imagefilename)
     image_steg = ImageToBits(image, bitness)
@@ -331,16 +343,16 @@ if __name__ == '__main__':
     command = listget(sys.argv, 1, '').lower()
     if command not in ['encode', 'decode']:
         print('Usage:')
-        print('> steganographic.py encode imagefilename.png secretfilename.ext')
-        print('> steganographic.py decode lacedimagename.png')
+        print('> steganographic.py encode imagefilename.png secretfilename.ext bitness')
+        print('> steganographic.py decode lacedimagename.png bitness')
         quit()
 
     imagefilename = sys.argv[2]
 
     if command == 'encode':
         secretfilename = sys.argv[3]
-        bitness = int(listget(sys.argv, 4, 1))
+        bitness = int(sys.argv[4])
         encode(imagefilename, secretfilename, bitness)
     else:
-        bitness = int(listget(sys.argv, 3, 1))
+        bitness = int(sys.argv[3])
         decode(imagefilename, bitness)