moved most global vars in textures.py into an instantiatable class

contrib/gallery.py

@@ -0,0 +1,40 @@
+"""
+Outputs a huge image with all currently-supported block textures.
+"""
+
+from overviewer_core import textures
+import sys
+import Image
+
+if len(sys.argv) != 2:
+    print "usage: %s [output.png]" % (sys.argv[0],)
+    sys.exit(1)
+
+t = textures.Textures()
+t.generate()
+
+blocks = {}
+
+for blockid in xrange(t.max_blockid):
+    for data in xrange(t.max_data):
+        tex = t.blockmap[blockid * t.max_data + data]
+        if tex:
+            if not blockid in blocks:
+                blocks[blockid] = {}
+            blocks[blockid][data] = tex
+
+columns = max(map(len, blocks.values()))
+rows = len(blocks)
+texsize = t.texture_size
+
+gallery = Image.new("RGBA", (columns * texsize, rows * texsize), t.bgcolor)
+
+row = 0
+for blockid, textures in blocks.iteritems():
+    column = 0
+    for data, tex in textures.iteritems():
+        gallery.paste(tex[0], (column * texsize, row * texsize))
+        column += 1
+    row += 1
+
+gallery.save(sys.argv[1])