;;; -*-lisp-*-
;;;
;;; Compute rectangular-section wire sizes
;;;
;;; (c) 2007 Mark Wooding
;;;

;;;----- Licensing notice ---------------------------------------------------
;;;
;;; This program is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 2 of the License, or
;;; (at your option) any later version.
;;;
;;; This program 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 General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program; if not, write to the Free Software Foundation,
;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

(install-dep-syntax)

(defwindow rolling-window () ("Rolling")
  (let* ((width (make-dep))
	 (thick (make-dep))
	 (length (make-dep))
	 (stock-type (make-dep :round))
	 (stock-size (make-dep))
	 (volume #[(* ?width ?thick ?length)])
	 (stock-length #[(/ ?volume
			    (case ?stock-type
			      (:round (* 1/4 pi (expt ?stock-size 2)))
			      (:square (expt ?stock-size 2))
			      (t (dep-bad))))])
	 (sq-size #[(expt (* (expt ?width 2) ?thick) 1/3)])
	 (rnd-diam #[(/ (* 2 ?sq-size) (sqrt pi))])
	 (start-length #[(/ ?volume (expt ?sq-size 2))]))
    (within-group ("Required size")
      (make-input "Width:" width)
      (make-input "Thickness:" thick)
      (make-input "Length:" length))
    (within-group ("You should start with")
      (make-output "Square side:" sq-size)
      (make-output "Round diameter:" rnd-diam)
      (make-output "Length:" start-length))
    (within-group ("Initial stock")
      (make-radio-dep stock-type
		      '(:round "Round section"
			:square "Square section"))
      (make-input "Stock size:" stock-size)
      (make-output "Stock length:" stock-length))
    #+ no
    (within-group ("Other data")
      (make-output "Volume:" volume))))

(rolling-window)

;;;----- That's all, folks --------------------------------------------------