tools/create_texture__mcl_portals_portal.py

   1 import png
   2 w, h = 64, 256;
   3 s = [[int(0) for c in range(w)] for c in range(h)]
   4
   5 def line(y1, x1, y2, x2, v):
   6         signx = 1
   7         signy = 1
   8         dx = x2 - x1
   9         dy = y2 - y1
  10         if dx < 0:
  11                 dx = - dx
  12                 signx = -1
  13         if dy < 0:
  14                 dy = - dy
  15                 signy = -1
  16         offsx = dx/2
  17         offsy = dy/2
  18         dir1 = 0
  19         if dx >= dy:
  20                 dir1 = 1
  21         for i in range(max(dx, dy)+1):
  22                 if v==2:
  23                         s[x1][y1]=1-s[x1][y1]
  24                 else:
  25                         s[x1][y1] = v
  26                 if dir1 == 1:
  27                         x1 += signx
  28                         offsy += dy
  29                         if offsy >= dx:
  30                                 y1 += signy
  31                                 offsy -= dx
  32                 else:
  33                         y1 += signy
  34                         offsx += dx
  35                         if offsx >= dy:
  36                                 x1 += signx
  37                                 offsx -= dy
  38
  39 # R, G, B, Alpha (0xFF = opaque):
  40 palette=[(0x00,0x00,0xaf,0xa0), (0x7f,0x0f,0xaf,0xb8)]
  41
  42 for j in range(16):
  43         i = j * 4
  44         line(i, 0, 63-i, 63, 2)
  45         line(63, i, 0, 63-i, 2)
  46         i+=1
  47         line(i, 64, 63-i, 127, 2)
  48         line(63, 64+i, 0, 127-i, 2)
  49         i+=1
  50         line(i, 128, 63-i, 191, 2)
  51         line(63, 128+i, 0, 191-i, 2)
  52         i+=1
  53         line(i, 192, 63-i, 255, 2)
  54         line(63, 192+i, 0, 255-i, 2)
  55
  56 w = png.Writer(len(s[0]), len(s), palette=palette, bitdepth=1)
  57 f = open('mcl_portals_portal.png', 'wb')
  58 w.write(f, s)