grafx - Extensible Java Graphics Package Code

Streamlining the constant color line drawing routines, no longer accessing
array members in the inner loop.

Using m_foff in the constant color line drawing routines.

In color interpolated line drawing code, doing more accurate aliasing
computations for xx and yy, by using m_foff.

Adding a new level 30. It's a 7x5 pit with only sixer blocks.

Upping qSearchBreadth from 24 to 32.

Upping the bowl metrics just a tad.

Adding some commented out code.

Really improving AllBlocksGifImage; the image width is constant at 1280 pixels,
vertical and horizontal spacing are calculated, static constants defined for
e.g. number of columns, a filter function added for easy image modification.

In BlockImage giving all blocks the same color for their name. In the future
it would be possible to group the blocks in pairs, if they have a unique mirror
image, and to use a slightly different color for the names of those blocks.

Using m_foff for the color interpolating line drawing routines. It works, but
we can't immediately see an immediate gain in accuracy. The old way of doing
things only theoretically was less accurate, and I was never able to get a bad
pixel even in the old way of doing it.