m

Author: ityard

yeke/README.md

@@ -16,6 +16,7 @@
 + [py-aljx](https://github.com/JustDoPython/python-examples/tree/master/yeke/py-aljx) ：阿里注册了新公司京西，用 Python 看看网友怎么说
 + [py-teacher](https://github.com/JustDoPython/python-examples/tree/master/yeke/py-teacher) ：用 Python 为老师送上节日的祝福
 + [py-minesweep](https://github.com/JustDoPython/python-examples/tree/master/yeke/py-minesweep) ：用 Python 实现扫雷小游戏
++ [py-ascii](https://github.com/JustDoPython/python-examples/tree/master/yeke/py-ascii) ：用 Python 实现扫雷小游戏
 
 ---
 

yeke/py-ascii/Courier-New.ttf

@@ -0,0 +1,102 @@
+import os, imageio
+from PIL import Image, ImageDraw, ImageFont
+
+# 拆分 gif 将每一帧处理成字符画
+def gif2pic(file, ascii_chars, isgray, font, scale):
+    '''
+    file: gif 文件
+    ascii_chars: 灰度值对应的字符串
+    isgray: 是否黑白
+    font: ImageFont 对象
+    scale: 缩放比例
+    '''
+    im = Image.open(file)
+    path = os.getcwd()
+    if(not os.path.exists(path+"/tmp")):
+        os.mkdir(path+"/tmp")
+    os.chdir(path+"/tmp")
+    # 清空 tmp 目录下内容
+    for f in os.listdir(path+"/tmp"):
+        os.remove(f)
+    try:
+        while 1:
+            current = im.tell()
+            name = file.split('.')[0]+'_tmp_'+str(current)+'.png'
+            # 保存每一帧图片
+            im.save(name)
+            # 将每一帧处理为字符画
+            img2ascii(name, ascii_chars, isgray, font, scale)
+            # 继续处理下一帧
+            im.seek(current+1)
+    except:
+        os.chdir(path)
+
+# 将不同的灰度值映射为 ASCII 字符
+def get_char(ascii_chars, r, g, b):
+    length = len(ascii_chars)
+    gray = int(0.2126 * r + 0.7152 * g + 0.0722 * b)
+    return ascii_chars[int(gray/(256/length))]
+
+
+# 将图片处理成字符画
+def img2ascii(img, ascii_chars, isgray, font, scale):
+    scale = scale
+    # 将图片转换为 RGB 模式
+    im = Image.open(img).convert('RGB')
+    # 设定处理后的字符画大小
+    raw_width = int(im.width * scale)
+    raw_height = int(im.height * scale)
+    # 获取设定的字体的尺寸
+    font_x, font_y = font.getsize(' ')
+    # 确定单元的大小
+    block_x = int(font_x * scale)
+    block_y = int(font_y * scale)
+    # 确定长宽各有几个单元
+    w = int(raw_width/block_x)
+    h = int(raw_height/block_y)
+    # 将每个单元缩小为一个像素
+    im = im.resize((w, h), Image.NEAREST)
+    # txts 和 colors 分别存储对应块的 ASCII 字符和 RGB 值
+    txts = []
+    colors = []
+    for i in range(h):
+        line = ''
+        lineColor = []
+        for j in range(w):
+            pixel = im.getpixel((j, i))
+            lineColor.append((pixel[0], pixel[1], pixel[2]))
+            line += get_char(ascii_chars, pixel[0], pixel[1], pixel[2])
+        txts.append(line)
+        colors.append(lineColor)
+    # 创建新画布
+    img_txt = Image.new('RGB', (raw_width, raw_height), (255, 255, 255))
+    # 创建 ImageDraw 对象以写入 ASCII
+    draw = ImageDraw.Draw(img_txt)
+    for j in range(len(txts)):
+        for i in range(len(txts[0])):
+            if isgray:
+                draw.text((i * block_x, j * block_y), txts[j][i], (119,136,153))
+            else:
+                draw.text((i * block_x, j * block_y), txts[j][i], colors[j][i])
+    img_txt.save(img)
+
+# 读取 tmp 目录下文件合成 gif
+def pic2gif(dir_name, out_name, duration):
+    path = os.getcwd()
+    os.chdir(dir_name)
+    dirs = os.listdir()
+    images = []
+    num = 0
+    for d in dirs:
+        images.append(imageio.imread(d))
+        num += 1
+    os.chdir(path)
+    imageio.mimsave(out_name + '_ascii.gif',images,duration = duration)
+
+
+if __name__ == "__main__":
+    ascii_chars = list("$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~<>i!lI;:,\"^`'. ")
+    fname = 'g2'
+    font = ImageFont.truetype('Courier-New.ttf', size=int(6))
+    gif2pic(fname + '.gif', ascii_chars, False, font, 1)
+    pic2gif('tmp', fname, 0.2)