Create basic font module.

1 files changed, 54 insertions, 0 deletions

diff --git a/2d/font.scm b/2d/font.scm
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+++ b/2d/font.scm
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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)))