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draw.scm
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draw.scm
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;; Copyright (C) 2010 Sean D'Epagnier <[email protected]>
;;
;; 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 3 of the License, or (at your option) any later version.
(declare (unit draw))
(define (draw-vector-arrow a b)
(let ((m (map average a b))
(n `(,(* .15 (- (cadr a) (cadr b)))
,(* .15 (- (car b) (car a))))))
(glBegin gl:LINES
(apply glVertex a)
(apply glVertex b)
(apply glVertex (map + m n))
(apply glVertex b)
(apply glVertex (map - m n))
(apply glVertex b))))
(define (drawcoastlines)
(let ((filename "/usr/local/share/xtide/wvs/wvsfull.dat"))
#t
)
)