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-rw-r--r--2d/font.scm54
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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)
+ #: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)
+ (gl-color 1 1 1)
+ (ftgl-render-font (font-ftgl-font font)
+ text
+ (ftgl-render-mode all)))