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;;; guile-2d
;;; Copyright (C) 2013 David Thompson <dthompson2@worcester.edu>
;;;
;;; Guile-2d is free software: you can redistribute it and/or modify it
;;; under the terms of the GNU Lesser General Public License as
;;; published by the Free Software Foundation, either version 3 of the
;;; License, or (at your option) any later version.
;;;
;;; Guile-2d is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; Lesser General Public License for more details.
;;;
;;; You should have received a copy of the GNU Lesser General Public
;;; License along with this program. If not, see
;;; <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Font rendering.
;;
;;; Code:
(define-module (2d font)
#:use-module (figl gl)
#:use-module (srfi srfi-9)
#:use-module (system foreign)
#:use-module (2d wrappers ftgl)
#:use-module (2d color)
#:export (<font>
make-font
font?
font-ftgl-font
font-size
load-font
render-font))
;; Font objects represent an FTGL texture font at a given size.
(define-record-type <font>
(make-font ftgl-font size)
font?
(ftgl-font font-ftgl-font)
(size font-size))
(define (load-font filename size)
(let ((ftgl-font (ftgl-create-texture-font filename)))
;; Hardcoded 72 dpi for now.
(ftgl-set-font-face-size ftgl-font size 72)
(make-font ftgl-font size)))
(define (render-font font text color alignment)
(apply-color color)
(ftgl-render-font (font-ftgl-font font)
text
(ftgl-render-mode all)))
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