ttf2png - True Type Font to PNG converter
-Copyright (c) 2004-2018 Mikko Rasa, Mikkosoft Productions
+Copyright (c) 2004-2021 Mikko Rasa, Mikkosoft Productions
Software requirements
Control the amount of padding between glyphs. The default is 1 pixel.
Only used with -p.
+ -g
+ Allow the resulting image to have a non-power-of-two size. By default the
+ image size is rounded up to a power of two for maximum compatibility.
+
+ -f <num>
+ Generate a distance field texture. The argument controls the amount of
+ oversampling when calculating distances. Larger values may produce more
+ accurate results but take longer to process. Distance fields are always
+ stored without alpha and with large/positive values indicating the inside
+ of glyphs; the -t and -i options are ignored.
+
+ -b <pixels>
+ Set the border zone width for distance field. The default is the square
+ root of the font size.
+
-d
File name to write glyph definitions. See the section below for details.
Field 3: nominal size of the font
Fields 4-5: ascent and descent of the font
-The keyword "glyph" is followed by eight fields describing a single glyph:
+The keyword "code" is followed by two fields establishing a code point to
+glyph mapping:
- Field 1: the code point of the glyph
- Fields 2-3: x and y position of the glyph in the image
- Fields 4-5: width and height of the glyph
- Fields 6-7: x and y offset of the glyph from its base point
- Field 8: advance from this glyph to the next
+ Field 1: Unicode code point
+ Field 2: Glyph index
-The keyword "kern" is followed by three fields describing kerning between two
-glyphs:
+The keyword "metrics" is followed by six fields describing the metrics of a
+glyph:
- Field 1: the code point of the left-hand glyph
- Field 2: the code point of the right-hand glyph
- Field 3: kerning distance between the glyphs
+ Field 1: the index of the glyph
+ Fields 2-3: width and height of the glyph
+ Fields 4-5: x and y offset of the glyph from its base point
+ Field 6: advance from this glyph to the next
-The following ASCII art image illustrates most of these metrics. Note that in
-some fonts, not all of the glyphs fit completely inside the character box.
+The following ASCII art image illustrates the basic metrics. The character
+box is a conceptual rectangle in which most of the glyphs in the font fit.
+Some fonts may contain glyphs that extend outside of the nominal character
+box.
- - - - - - - - ^
| character box | |
|--------------->
advance
+The keyword "glyph" is followed by six field describing the area of the image
+used for the glyph:
+
+ Field 1: the index of the glyph
+ Fields 2-3: x and y position of the glyph in the image
+ Fields 4-5: width and height of the glyph
+ Field 6: border zone included in the image
+
+The border zone is used with distance field textures to allow the distance
+field to extend past the actual glyph. If a glyph has a border, the origin
+point in the metrics refers to the glyph's lower left corner. Subtract the
+border width from both coordinates to obtain the correct rendering position
+for the image.
+
+The keyword "kern" is followed by three fields describing kerning between two
+glyphs:
+
+ Field 1: the index of the left-hand glyph
+ Field 2: the index of the right-hand glyph
+ Field 3: kerning distance between the glyphs
+
Changelog
-next
+2.0 "The release I forgot to make three years ago"
- Alternate ways of specifying code point ranges
- Multiple code point ranges can be specified
+- Option to generate non-power-of-two images
+- Support for distance field generation
1.1
- Controllable margin and padding in packed mode
projects / ttf2png.git / blobdiff