perm filename PAGE42[00,BGB] blob
sn#047834 filedate 1973-06-07 generic text, type T, neo UTF8
~F8IV. USING TVFONT - draft.
Introduction.
TVFONT is a version of CRE (January 1973) that was
specialized to the task of converting television images into type
fonts for the XGP, Xerox Graphics Printer. The original idea was to
demonstrate the utility of a polygon representation for scaling,
smoothing and editing typographical glyphs; the resulting hack
(demonstration program) was extended and developed by Tovar Mock
into the program called TVFONT. Accordingly, the main idea of TVFONT
is to convert video rasters into polygons, to edit and scale the
polygons, and to convert the polygons back into bit rasters.
This section IV, will be available as a TVFONT user manual
in another six months; it is presented here to give the would be
user a start, and the general reader a sample of the design and
extent of TVFONT.
The figure on page 41 is an example of expanding and
contracting a font without manual touching up. The top sample is the
original (BDR40 from CMU). The remainder have been generated by
TVFONT. The expansion or contraction was done by converting fonts
from bit matrices into a polygonal representation, multiplying by
the appropriate constant and reconverting back into a bit
representation. The following paragraph is an example of a font made
from television pictures:
~I1973,800;F8- 42 -