Start assets

assets/img2array.py

@@ -0,0 +1,79 @@
+import sys
+from PIL import Image
+
+def rgbTo565(rgb):
+  return ((rgb[0] >> 3) << 11) | ((rgb[1] >> 2) << 5) | ((rgb[2] >> 3))
+
+def colorDist(c1,c2):
+  return abs((c1 & 0x1f) - (c2 & 0x1f)) + abs(((c1 >> 5) & 0x3f) - ((c2 >> 5) & 0x3f)) + abs((c1 >> 11) - (c2 >> 11))
+
+FILENAME = sys.argv[1]
+
+image = Image.open(FILENAME).convert("RGB")
+
+IMG_SIZE = image.size[0]
+
+pixels = image.load()
+
+outArray = []
+
+if IMG_SIZE == 64: # normal texture
+  for y in range(IMG_SIZE):
+    for x in range(IMG_SIZE):
+      outArray.append(rgbTo565(pixels[(x,y)]))
+else: # sky texture
+  hist = [0 for i in range(65536)]
+
+  for y in range(IMG_SIZE):
+    for x in range(IMG_SIZE):
+      hist[rgbTo565(pixels[(x,y)])] += 1
+
+  for i in range(256): # make the palette from 256 most common colors
+    histMaxIndex = 0
+
+    for j in range(65536):
+      if hist[j] > hist[histMaxIndex]:
+        histMaxIndex = j
+
+    outArray.append(histMaxIndex)
+
+    hist[histMaxIndex] = -1
+
+  odd = True
+
+  for y in range(IMG_SIZE):
+    for x in range(IMG_SIZE):
+      pixel = rgbTo565(pixels[(x,y)])
+      
+      closestIndex = 0
+      closestDist = 1000
+
+      for i in range(256):
+        dist = colorDist(pixel,outArray[i])
+
+        if dist < closestDist:
+          closestDist = dist
+          closestIndex = i
+
+        if closestDist == 0:
+          break
+      
+      if odd:
+        outArray.append(closestIndex)
+        odd = False
+      else:
+        outArray[-1] = outArray[-1] | (closestIndex << 8)
+        odd = True
+
+outStr = ""
+
+for i in range(len(outArray)):
+  if i % 16 == 0:
+    outStr += "\n  "
+    
+  outStr += "{0:#0{1}x}".format(outArray[i],6)
+
+  if i != len(outArray) - 1:
+    outStr += ","
+
+print(outStr)