grafx - Extensible Java Graphics Package Code

Adding a Javadoc comment.

Improving the m_ccfoff, m_zfoff semantics.

Working on improving the s_ccfoff handing.

Starting to fix the s_ccfoff magic.

Renaming s_colorFactorInt to s_ccfoff. Need to do a major refactor here.

Simplifying function setPix2().

Cleaning up some usages of m_normalizedFront.

Adding an important TODO comment.

In line interpolated line drawing routinges, shifting the color component
computation space, adding an offset of 256.0, so that casts to float etc. would
drop the accumulation error.

In constant color line drawing functions, the cast of z value from double to
float to int now takes place in a place which is offset by m_normalizedFront,
so that proximity to zero is avoided, which would have failed to drop
accumulated errors as effectively. I still have some work to do, esp. in the
code that interpolates colors, as the color components need the same treatment.
Polygon filling also needs to be updated eventually. Right now both worlds can
coexist because I have parallel sets of variables or functions.