bitmap fonts - meaning and definition. What is bitmap fonts
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What (who) is bitmap fonts - definition

DIGITAL DESCRIPTION OF A TYPOGRAPHICAL FONT
Bitmap font; Vector fonts; Vector font; Raster font; Digital font; Bit-Mapped Font; Bitmapped font; Pixel font; Scalable font; Bitmap fonts; Digital typeface; .fon; Outline typeface; Computer fonts; Font file; Stroke font; Virtual typeface; Screen font; Stroke-based font; Digital fonts; Raster fonts; Outline font; Computer typeface
  • A bitmap color font for the [[Amiga OS]]
  • Perpetua]]
  • With stroke-based fonts, the same stroke paths can be filled with different stroke profiles resulting in different visual shapes without the need to specify the vertex positions of each outline, as is the case with outline fonts.
  • Macintosh operating system]]

bitmap font         
<text> A font where each character is stored as an array of pixels (a bitmap). Such fonts are not easily scalable, in contrast to vectored fonts (like those used in PostScript). [Examples?] (1995-02-16)
xbm         
IMAGE FILE FORMAT
X BitMap Format; X Bitmap; XBM; .xbm
<filename extension> X bit map. The filename extension for files containing bitmaps for use in the X Window System. These are actually include files which can be #include'd into C program source to define images as initialised data. (1995-03-14)
X BitMap         
IMAGE FILE FORMAT
X BitMap Format; X Bitmap; XBM; .xbm
In computer graphics, the X Window System used X BitMap (XBM), a plain text binary image format, for storing cursor and icon bitmaps used in the X GUI. The XBM format is superseded by XPM, which first appeared for X11 in 1989.

Wikipedia

Computer font

A computer font is implemented as a digital data file containing a set of graphically related glyphs. A computer font is designed and created using a font editor. A computer font specifically designed for the computer screen, and not for printing, is a screen font.

In the terminology of movable metal type, a font is a set of pieces of movable type in a specific typeface, size, width, weight, slope, etc. (for example, Gill Sans bold 12 point or Century Expanded 14 point), and a typeface refers to the collection of related fonts across styles and sizes (for example, all the varieties of Gill Sans). In HTML, CSS, and related technologies, the font family attribute refers to the digital equivalent of a typeface. Since the 1990s, many people use the word font as a synonym for typeface.

There are three basic kinds of computer font file data formats:

  • Bitmap fonts consist of a matrix of dots or pixels representing the image of each glyph in each face and size.
  • Vector fonts (including, and sometimes used as a synonym for, outline fonts) use Bézier curves, drawing instructions and mathematical formulae to describe each glyph, which make the character outlines scalable to any size.
  • Stroke fonts use a series of specified lines and additional information to define the size and shape of the line in a specific typeface, which together determine the appearance of the glyph.

Bitmap fonts are faster and easier to create in computer code than other font types, but they are not scalable: a bitmap font requires a separate font for each size. Outline and stroke fonts can be resized in a single font by substituting different measurements for components of each glyph, but they are more complicated to render on screen or in print than bitmap fonts because they require additional computer code to render the bitmaps to display on screen and in print. Although all font types are still in use, most fonts used on computers today are outline fonts.

Fonts can be monospaced (i.e. every character is plotted a constant distance from the previous character that it is next to, while drawing) or proportional (each character has its own width). However, the particular font-handling application can affect the spacing, particularly when justifying text.