;;;;
;;;; $Id$
;;;;
-;;;; This file, part of cl-photo, is Copyright (c) 2005 by Kevin Rosenberg.
-;;;; Rights of modification and redistribution are in the LICENSE file.
+;;;; This file, part of cl-photo, is Copyright (c) 2005 by Kevin M. Rosenberg
+;;;;
+;;;; cl-photo users are granted the rights to distribute and use this software
+;;;; as governed by the terms of the GNU General Public License v2
+;;;; (http://www.gnu.org/licenses/gpl.html)
;;;;
;;;; *************************************************************************
(defun inches->mm (d)
(* d +inches->mm+))
-(defun format-dimensions (format)
- "Returns format dimensions in mm."
- (ecase format
- (:aps-c (cons 22.7 15.1))
- ((:aps :dx) (cons 24 16))
- ((:35 :35mm) (cons 36 24))
- ((:645 :6x4.5cm) (cons 60 45))
- ((:6x6 :6x6cm) (cons 60 60))
- ((:6x7 :6x7cm) (cons 60 70))
- ((:6x9 :6x9cm) (cons 60 90))
- ((:4x5 :4x5in) (cons (* 4 +inches->mm+) (* 5 +inches->mm+)))
- ((:5x7 :5x7in) (cons (* 5 +inches->mm+) (* 7 +inches->mm+)))
- ((:8x10 :8x10in) (cons (* 8 +inches->mm+) (* 10 +inches->mm+)))
- (:11x13.75in (cons (* 11 +inches->mm+) (* 13.75 +inches->mm+)))
- (:11x16.5in (cons (* 11 +inches->mm+) (* 16.5 +inches->mm+)))
- (:13x19in (cons (* 13 +inches->mm+) (* 19 +inches->mm+)))
- (:16x20in (cons (* 13 +inches->mm+) (* 19 +inches->mm+)))
- (:16x24in (cons (* 13 +inches->mm+) (* 19 +inches->mm+)))
- (:18x22.5in (cons (* 13 +inches->mm+) (* 19 +inches->mm+)))
- (:18x24in (cons (* 13 +inches->mm+) (* 19 +inches->mm+)))
- (:24x30in (cons (* 13 +inches->mm+) (* 19 +inches->mm+)))
- (:24x36in (cons (* 13 +inches->mm+) (* 19 +inches->mm+)))
- ))
+(declaim (inline mm->inches))
+(defun mm->inches (d)
+ (/ d +inches->mm+))
+
+(defun length->mm (d units)
+ "Convert a length in units to mm."
+ (ecase units
+ (:mm d)
+ (:inches (inches->mm d))
+ (:feet (inches->mm (* d 12)))
+ (:yards (inches->mm (* d 36)))
+ (:meters (* 1000 d))))
+
+(defun mm->length (d units)
+ "Convert a number of mm to units."
+ (ecase units
+ (:mm d)
+ (:inches (mm->inches d))
+ (:feet (/ (mm->inches d) 12))
+ (:yards (/ (mm->inches d) 36))
+ (:meters (/ d 1000))))
+
+