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240 lines
6.8 KiB
240 lines
6.8 KiB
#!/usr/bin/env python3
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### Readme ###################################################################
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# name: sprite-optimizer
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# version: 1.1
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# author: Dark-Storm
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# license: CeCILL v2.1
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#
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# comments:
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# lines are stored as arrays of pixels
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##############################################################################
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from argparse import ArgumentParser
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from bresenham import bresenham
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from PIL import Image, ImageDraw
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from random import randint
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import sys
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from time import time
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rand = lambda: randint(0,200)
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progress = False
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def print_stats(img):
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"""Print number and percentage of black pixels"""
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pixels = img.getdata()
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count = sum([1 for i in pixels if i == 0])
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if progress:
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print("{} black pixels over {} ({:.1%})".format(count, len(pixels), count/len(pixels)))
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def get_lines(img):
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"""Generate all potential lines the image contains"""
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lines = set()
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lines_uniq = set()
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pixels = {(x, y) for x in range(img.width) for y in range(img.height) if img.getpixel((x, y)) == 0}
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i, n = 0, len(pixels) * len(pixels)
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if progress:
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print("Get lines:", end = "")
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# for each pair of pixels, get the line
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for a in pixels:
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for b in pixels:
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line = tuple(bresenham(*a, *b))
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line_uniq = tuple(sorted(line))
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# if image contains the line, put it on the array
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if set(line).issubset(pixels) and line_uniq not in lines_uniq:
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lines.add(line)
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lines_uniq.add(line_uniq)
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i += 1
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if progress:
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print("\rGet lines: {:.1%}".format(i / n), end = "")
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if progress:
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print("\rGet lines: complete")
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print("{} lines found".format(len(lines)))
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return list(lines)
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def removing_useless(lines):
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"""Remove lines that are sub-lines of other ones"""
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results = []
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n = len(lines)
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if progress:
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print("Remove useless lines:", end = "")
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# for each line, see if there is a line that contains every pixel of it
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lines_set = [ set(l) for l in lines ]
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for i, l in enumerate(lines_set):
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inclusions = 0
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# others are all lines that are not l
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for j, k in enumerate(lines_set):
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if i == j: continue
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if l.issubset(k):
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inclusions += 1
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break
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# or len(l) == 1 : we keep single pixels to complete the image if necessary
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# TODO: do some tests to see if it's worth or not
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if inclusions == 0 or len(l) == 1:
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results.append((len(l), lines[i], l))
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if progress:
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print("\rRemove useless lines: {:.1%}".format(i / n), end = "")
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if progress:
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print("\rRemove useless lines: complete")
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if progress:
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print("{} lines kept".format(len(results)))
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return results
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def get_best_solution(img, lines):
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"""Compute an optimized solution. The magic part of the algorithm"""
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px_left = {(x, y) for x in range(img.width) for y in range(img.height)
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if img.getpixel((x, y)) == 0}
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results = []
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n = len(px_left)
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if progress:
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print("Draw:", end = "")
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# while the entier image has not been drown
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while px_left:
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# define the length of lines
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lines = [(len(l_set.intersection(px_left)) - len(l)/(2*max(img.size)),
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l, l_set) for n, l, l_set in lines]
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# sort them by length
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lines = sorted(lines)
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# pop the longest
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(p, line, line_set) = lines.pop()
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# define the pixels that are not covered by any lines
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px_left = px_left.difference(line_set)
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results.append((line[0], line[-1]))
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if progress:
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print("\rDraw: {:.0%}".format(1 - len(px_left)/n), end="")
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if progress:
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print("\rDraw: complete")
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if progress:
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print("Solution found in {} lines".format(len(results)))
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return results
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def generate_code(lines, args):
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"""Generate Basic Casio code"""
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str_x, str_y = "{", "{"
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# Casio's bresenham is reversed compared to classic ones
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# so we need to reverse the ends of the lines
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for (x_end, y_end), (x_start, y_start) in lines:
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x_start, y_start = x_start + int(args.offset[0]), y_start + int(args.offset[1])
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x_end, y_end = x_end + int(args.offset[0]), y_end + int(args.offset[1])
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str_x += "{}, ".format(get_coord(x_start, x_end))
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str_y += "{}, ".format(get_coord(y_start, y_end))
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str_x = str_x[:-2] + "}"
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str_y = str_y[:-2] + "}"
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code = "Graph(X,Y)=({}, {})".format(str_x, str_y)
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return code
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def generate_raw(lines, args):
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"""Generate raw line coordinates"""
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ox, oy = int(args.offset[0]), int(args.offset[1])
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code = ""
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for (x_end, y_end), (x_start, y_start) in lines:
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code += f"{x_start} {y_start} {x_end} {y_end}\n"
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return code
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# From Zezeombye's BIDE
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def get_coord(start, end):
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"""Convert a pair of coordonates to the appropriate x+yT Multi DrawStat output"""
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result = "";
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if start != 0:
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result += str(start)
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delta = end - start
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if delta != 0:
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if delta > 0 and start != 0:
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result += "+";
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if delta < 0:
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result += "-";
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if delta != 1 and delta != -1:
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result += str(abs(delta))
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result += "T";
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if len(result) == 0:
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result = "0"
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return result;
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if __name__ == "__main__":
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start = time()
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parser = ArgumentParser(description='Generate the Multi DrawStat code for an image.')
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parser.add_argument('path', type=str, help='path of the image to process')
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parser.add_argument('-e', '--export', nargs=1, help='export the code into <EXPORT>')
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parser.add_argument('-o', '--offset', nargs=2, default=(0, 0), help='offset for viewwindow. Default: (0, 0)')
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parser.add_argument('-f', '--flip', action='store_true', help='flip image vertically (for inverted ViewWindow)')
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parser.add_argument('-i', '--info', action='store_true', help='print informative stats')
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parser.add_argument('-p', '--progress', action='store_true', help='print progress info')
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parser.add_argument('-s', '--show', action='store_true', help='show the result')
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parser.add_argument('-d', '--draw', action='store_true', help='draw the result into a new file')
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parser.add_argument('-r', '--raw', action='store_true', help='print raw line coordinates')
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args = parser.parse_args()
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progress = args.progress
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try:
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image = Image.open(args.path)
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except:
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sys.exit("Error! Unable to open file.")
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try:
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image = image.convert('1')
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except:
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sys.exit("Error! Unable to convert to 1bit")
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if args.flip:
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image = image.transpose(Image.FLIP_TOP_BOTTOM)
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if args.info:
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print_stats(image)
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lines = get_lines(image)
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lines = removing_useless(lines)
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lines = get_best_solution(image, lines)
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if args.raw:
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code = generate_raw(lines, args)
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else:
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code = generate_code(lines, args)
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if args.draw or args.show:
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export = Image.new('RGB', image.size, 'white')
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drawer = ImageDraw.Draw(export)
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for ((a, b), (c, d)) in reversed(lines):
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drawer.line((a, b, c, d), fill=(rand(), rand(), rand()))
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export = export.resize((export.width * 8, export.height * 8))
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if args.draw:
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export.save(args.path[:-4] + "_gen.png")
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if args.show:
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export.show()
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if args.info:
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print("{} processed in {} lines ({:.3}s)".format(args.path, len(lines), time() - start))
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if args.export:
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try:
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f = open(args.export[0], 'w')
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f.write(code)
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f.close()
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print("Code saved into", args.export[0])
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except Exception as e:
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sys.exit("Error: " + str(e))
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print(code)
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