a developer's function to match MCPE Viz block + items with PNG files from minecraft wiki

todo - this is probably quite slow

todozooz - this is getting crazy

this is 4-bytes: lsb is biome, the high 3-bytes are RGB grass color

this is 3-bytes: lsb is biome?, the high 2-bytes are RGB grass color?

height of top *solid* block? (e.g. a glass block will NOT be the top block here)

height appears to be stored as a 2-byte int height of top *solid* block? (e.g. a glass block will NOT be the top block here)

from: http://kickjava.com/src/org/eclipse/swt/graphics/RGB.java.htm

trim from both ends (in place)

trim from both ends (copying)