usage: photo-maker.py [-h] {heart,split,mosaic,ascii} ...

            A Dead Simple Photo Maker
===========================================================
______ _           _             ___  ___      _
| ___ \ |         | |            |  \/  |     | |
| |_/ / |__   ___ | |_ ___ ______| .  . | __ _| | _____ _ __
|  __/| '_ \ / _ \| __/ _ \______| |\/| |/ _` | |/ / _ \ '__|
| |   | | | | (_) | || (_) |     | |  | | (_| |   <  __/ |
\_|   |_| |_|\___/ \__\___/      \_|  |_/\__,_|_|\_\___|_|

The most commonly used photo-maker commands are:
    heart      Use multi image files to generate a heart picture
    split      Split one image into A x B multi grid pictures
    mosaic     Generate a mosaic photo by use tiles
    ascii      Convert an image to ascii text

positional arguments:
  {heart,split,mosaic,ascii}

optional arguments:
  -h, --help            show this help message and exit

Source Code: http://github.com/shellvon/photo-maker

usage: photo-maker.py heart [-h] [-d DIR] [--autofill] [--padding PADDING]
                            [--size SIZE] [-s]
                            [-e EXTENSIONS [EXTENSIONS ...]] [--intermediate]
                            [-o OUTPUT]

微信心型九空格图片,一共是分享的9张,每一张也是9格图
如下图，需要填满的位置是X所在的位置:

Fig 1:              Fig 2:         Fig 3:
+---+---+---+   +---+---+---+   +---+---+---+
| 1 | 2 | 3 |   | 1 | 2 | 3 |   | 1 | 2 | 3 |
+-----------+   +-----------+   +-----------+
| 4 | 5 | x |   | x | 5 | x |   | x | 5 | 6 |
+-----------+   +-----------+   +-----------+
| 7 | x | x |   | x | x | x |   | x | x | 9 |
+-----------+   +-----------+   +-----------+

Fig 4:              Fig 5:         Fig 6:
+---+---+---+   +---+---+---+   +---+---+---+
| x | x | x |   | x | x | x |   | x | x | x |
+-----------+   +-----------+   +-----------+
| x | x | x |   | x | x | x |   | x | x | x |
+-----------+   +-----------+   +-----------+
| 7 | x | x |   | x | x | x |   | x | x | 9 |
+-----------+   +-----------+   +-----------+

Fig 7:              Fig 8:         Fig 9:
+---+---+---+   +---+---+---+   +---+---+---+
| 1 | 2 | x |   | x | x | x |   | x | 2 | 3 |
+-----------+   +-----------+   +-----------+
| 4 | 5 | 6 |   | x | x | x |   | 4 | 5 | 6 |
+-----------+   +-----------+   +-----------+
| 7 | 8 | 9 |   | 7 | x | 9 |   | 7 | 8 | 9 |
+-----------+   +-----------+   +-----------+
             ^^^
              |
              +----- 每一张图的间隔称之为 Padding

因此一共需要的图片张数是: (3 * 2) + 5 + (8 * 2) + 9 + (1 * 2) + 7 = 45 张图.

optional arguments:
  -h, --help            show this help message and exit
  -d DIR, --dir DIR     directory of the images, default is current dir
  --autofill            autofill pictures when picture is too few, default is
                        False
  --padding PADDING     padding size between each grid, default is 10
  --size SIZE           output image size，format is AxB, default size is:
                        1920x1920
  -s, --shuffle         shuffle the image file list
  -e EXTENSIONS [EXTENSIONS ...], --extensions EXTENSIONS [EXTENSIONS ...]
                        image file type, default is png,jpg,jpeg
  --intermediate        save intermediate file, default is False
  -o OUTPUT, --output OUTPUT
                        output image filename, default is collage.png

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