forked from qobi/R6RS-AD
/
gui.sc
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/
gui.sc
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;;; scc -o gui -O2 gui.sc ~/lib/i686-Linux-2.6.26-2-686/QobiScheme.a ~/lib/i686-Linux-2.6.26-2-686/scxl.a -L /usr/X11R6/lib -lX11;rm gui.c;mv gui ~/bin/i686-Linux-2.6.26-2-686/.
(module gui (with qobischeme xlib) (main main))
(include "QobiScheme.sch")
(set! *program* "gui")
(set! *panic?* #t)
(define-structure grid-point x y z)
(define-structure grid-point-contents notches notch)
(define *grid* #f)
(define *theta* 0)
(define *center* #f)
(define *observer* '#(0 -40 100))
(define *focal-length* 300)
;;; horizontal distance between notches
(define *l1* 20)
;;; log radius
(define *l2* 2)
;;; overhang
(define *l3* 5)
(define *i* 0)
(define (grid-xy? grid-point) (even? (grid-point-y grid-point)))
(define (grid-zy? grid-point) (odd? (grid-point-y grid-point)))
(define (log->line-segment grid-point grid-point-contents)
(cond
((grid-xy? grid-point)
(make-line-segment
(vector (- (* *l1* (grid-point-x grid-point)) *l3*)
(* *l2* (grid-point-y grid-point))
(* *l1* (grid-point-z grid-point)))
(vector (+ (* *l1*
(+ (grid-point-x grid-point)
(- (grid-point-contents-notches grid-point-contents) 1)))
*l3*)
(* *l2* (grid-point-y grid-point))
(* *l1* (grid-point-z grid-point)))))
((grid-zy? grid-point)
(make-line-segment
(vector (* *l1* (grid-point-x grid-point))
(* *l2* (grid-point-y grid-point))
(- (* *l1* (grid-point-z grid-point)) *l3*))
(vector (* *l1* (grid-point-x grid-point))
(* *l2* (grid-point-y grid-point))
(+ (* *l1*
(+ (grid-point-z grid-point)
(- (grid-point-contents-notches grid-point-contents) 1)))
*l3*))))
(else (fuck-up))))
(define (line-segments)
(removeq
#f
(map (lambda (grid-element)
(let ((grid-point (first grid-element))
(grid-point-contents (second grid-element)))
(if (and grid-point-contents
;; If the grid is malformed, i.e. if it does not meet the
;; occupancy constraints, it might display incorrectly.
(zero? (grid-point-contents-notch grid-point-contents)))
(log->line-segment grid-point grid-point-contents)
#f)))
*grid*)))
(define (read-grid pathname)
(map (lambda (string)
(list (make-grid-point (string->number (field-ref string 0))
(string->number (field-ref string 1))
(string->number (field-ref string 2)))
(if (zero? (string->number (field-ref string 3)))
#f
(make-grid-point-contents
(string->number (field-ref string 3))
(string->number (field-ref string 4))))))
(read-file (default-extension pathname "logs"))))
(define (object-center)
(let ((line-segments (line-segments)))
(if (null? line-segments)
'#(0 0 0)
(let ((v (k*v (/ (length line-segments))
(reduce
v+
(map (lambda (l)
(k*v 0.5 (v+ (line-segment-p l) (line-segment-q l))))
line-segments)
'#(0 0 0)))))
(vector (x v) 0 (z v))))))
(define (point-3d->2d p)
(let ((theta (degrees->radians *theta*)))
(project (v+ (m*v (vector (vector (cos theta) 0 (sin theta))
(vector 0 1 0)
(vector (- (sin theta)) 0 (cos theta)))
(v- p *center*))
*observer*)
*focal-length*)))
(define (line-segment-3d->2d l)
(make-line-segment (point-3d->2d (line-segment-p l))
(point-3d->2d (line-segment-q l))))
(define-application viewer 640 480 #f 1 6
(lambda ()
(define-button 0 0 "Help" #f help-command)
(define-button 5 0 "Quit" #f quit)
(define-button 1 0 "+Theta" #f
(lambda () (set! *theta* (+ *theta* 10)) (redraw-display-pane)))
(define-button 2 0 "-Theta" #f
(lambda () (set! *theta* (- *theta* 10)) (redraw-display-pane)))
(define-button 3 0 "Next" #f
(lambda ()
(unless (can-open-file-for-input? (format #f "solution-~s.logs" (+ *i* 1)))
(abort))
(set! *i* (+ *i* 1))
(set! *grid* (read-grid (format #f "solution-~s.logs" *i*)))
(set! *center* (object-center))
(redraw-display-pane)))
(define-button 4 0 "Previous" #f
(lambda ()
(when (zero? *i*) (abort))
(set! *i* (- *i* 1))
(set! *grid* (read-grid (format #f "solution-~s.logs" *i*)))
(set! *center* (object-center))
(redraw-display-pane)))
(define-key (list (control #\x) (control #\c)) "Quit" quit)
(define-key (control #\h) "Help" help-command))
(lambda () #f)
(lambda () #f)
(lambda ()
(for-each (lambda (l)
(let ((l (line-segment-3d->2d l)))
(xdrawline *display* *display-pane* *thin-gc*
(+ 320 (x (line-segment-p l)))
(- 240 (y (line-segment-p l)))
(+ 320 (x (line-segment-q l)))
(- 240 (y (line-segment-q l))))))
(line-segments))
(xdrawstring
*display* *display-pane* *roman-gc* 5 (- *display-pane-height* 5)
(number->string *i*) (string-length (number->string *i*)))))
(define (view)
(set! *i* 0)
(set! *grid* (read-grid (format #f "solution-~s.logs" *i*)))
(set! *center* (object-center))
(viewer '()))
(define-command (main) (view))