You can edit this page using wiki syntax for markup.

Article contents:== gl-type [[toc:]] Simple Freetype font rendering in OpenGL with a single vertex buffer and texture. Only horizontal, left-to-right rendering is currently supported. === Requirements * srfi-1 * srfi-13 * srfi-14 * freetype * gl-utils * miscmacros * epoxy === Documentation <procedure> (load-face PATH SIZE [char-set: CHAR-SET] [mode: MODE])</procedure> Load the font face given by the [[http://freetype.org/|Freetype-openable file]] pointed to by {{PATH}} with a size of {{SIZE}} pixels. {{CHAR-SET}} is the [[http://srfi.schemers.org/srfi-14/srfi-14.html|SRFI 14]] character-set that should be loaded, defaulting to {{char-set:graphic}}. Any non-graphical characters in the set will waste space. {{MODE}} is the mode in which the font should be rendered and should be one of {{#:normal}} (the default) – for normally hinted, anti-aliased rendering – or {{#:mono}} – for monochrome (aliased) rendering. Returns a {{face}} record. <record> face</record> <procedure> (face? FACE)</procedure> <procedure> (face-atlas FACE)</procedure> <procedure> (face-char-set FACE)</procedure> <procedure> (face-height FACE)</procedure> The record type returned by {{load-face}}. <procedure> (string-mesh STRING FACE [line-spacing: SPACING] [max-width: MAX-WIDTH] [x: X] [y: Y] [mesh: MESH])</procedure> Render the given {{STRING}} into a [[https://api.call-cc.org/5/doc/gl-utils/mesh|gl-utils mesh]] with the provided {{FACE}}. {{SPACING}} is multiplied by the standard line advancement – a smaller spacing results in less space between successive lines – defaults to {{1.3}}. If {{MAX-WIDTH}} is provided, the string will be word-wrapped such that it does not exceed the given width. {{X}} and {{Y}} may be given to provide an offset to the rendered string’s origin. {{MESH}} may be supplied in order to reuse a mesh previously created with {{string-mesh}}. When {{MESH}} is supplied, the number of graphical characters (non-whitespace characters in the char-set of {{FACE}}) in {{STRING}} must be equal to or less than the number of graphical characters in the string used to create {{MESH}}. Strings are rendered with the upper-left corner of the text at the origin, with the dimensions of the mesh set in pixels. The mesh that is created has vertex attributes {{position}} – a 2 element {{#:float}} – and {{tex-coord}} – a 2 element normalized {{#:ushort}}, and {{#:ushort}} indices. <procedure> (string-width STRING FACE)</procedure> Returns the width, in pixels, of the {{STRING}} if it were rendered with {{FACE}}. Any non-graphical characters other than {{#\space}} will be ignored. <parameter> (pixel-density-ratio)</parameter> Used to control the resolution at which fonts are rendered, defaulting to 1: each pixel unit corresponds to one display pixel. For most “Retina” displays a value of 2 should be used: each pixel unit corresponds to two display pixels. === Examples See the [[https://www.upyum.com/cgit.cgi/gl-type/tree/examples|examples directory]]. === Version history ==== Version 0.4.0 * Maintenance given to [[/users/kooda|Kooda]] * Port to CHICKEN 5 ==== Version 0.3.0 27 September 2014 * Add support for high density displays ==== Version 0.2.0 23 December 2014 * {{string-mesh}} accepts keyword {{mesh}} argument ==== Version 0.1.0 * Initial release === Source repository Source available [[https://www.upyum.com/cgit.cgi/gl-type/|here]] Bug reports and patches welcome! Bugs can be reported to kooda@upyum.com === Authors Alex Charlton Adrien (Kooda) Ramos === License BSD Description of your changes:

I would like to authenticate

Spam control

What do you get when you subtract 18 from 20?