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several onion skin thin slices, each thinner than the last.. .
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nik gaffney 2006-12-03 00:27:43 +01:00
parent 23ab92bdf7
commit 5b2e5ad26e
3 changed files with 17 additions and 35 deletions
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42
punctiform-convergence/layout.scm
View file

@ -1,6 +1,6 @@
;; -*- mode: scheme -*-
;;
;; basic layout attmepts
;; basic layout attempts
;;
;; copyright (C) 2004 FoAM vzw
;; You are granted the rights to distribute and use this software
@ -12,12 +12,13 @@
;; authors
;; - nik gaffney <nik@fo.am>
;; - tim boykett <tim@timesup.org>
;; requirements
;; -
;; - qfwfq and descendants
;; commentary
;; - wobble -> heirarchical rectangular spread
;; - wobble -> hierarchical rectangular spread
;; - shuffle -> randomise positions
;; - relax -> pseudo stabilisation using edge lengths
;; - shadowpi -> variation on circular parent-centric splay
@ -26,7 +27,9 @@
;; 2006-09-11
;; - scraped into coherence from various sources
;; 2006-11-12
;; - mottled shadows, multiple beginings
;; - mottled shadows, multiple beginning
;; 2006-11-26
;; - reshaping showdowpi with help from Dr Boykett
(module layout mzscheme
@ -41,8 +44,7 @@
(provide wobble-tree
shuffle-tree
relax-tree
shadowpi-tree
shadowtwopi-tree)
shadowpi-tree)
;;;;;; ; ; ;; ;;;; ;; ; ;;
@ -98,7 +100,7 @@
;;;;; ;;;;;; ;; ; ;; ;
;;
;; energy stabilisation
;; - single itteration only, call as reqd.
;; - single iteration only, call as reqd.
;; - local epsilon & delta only
;;
;;;;; ; ;;; ; ;
@ -177,6 +179,7 @@
(define (-ve n)
(- 0 n))
;;;;;;;;;;; ;; ; ;; ;
;;
;; circular parent centric layout, in the shade of twopi
@ -195,7 +198,7 @@
[e (length parents)]
[xi (snip-x node)]
[yi (snip-y node)]
(b (/ pi (if (eq? e 0) 1 e)))
(b (/ pi (if (eq? e 0) 1 e))) ;; twopi -> full circle
(a (- (+ theta (/ pi 2)) (/ b 2)))
(r1 (* 2 r (sin (/ b 2)))))
@ -208,27 +211,6 @@
(shadowpi-tree parent pb a r1)
(set! a (- a b))))
parents)))
(define (shadowtwopi-tree node pb theta r)
;; given a node from which to draw the layout, angle theta, radius, r
(let* ([parents (send node get-parents)]
[e (length parents)]
[xi (snip-x node)]
[yi (snip-y node)]
(b (/ twopi (if (eq? e 0) 1 e)))
(a (- (+ theta (/ pi 2)) (/ b 2)))
(r1 (* 2 r (sin (/ b 2)))))
;; distribute parents of given node evenly along a containment circle
;; centered on the node.
(for-each (lambda (parent)
(let ((x1 (+ xi (* r (cos a))))
(y1 (+ yi (* r (sin a)))))
(send pb move-to parent x1 y1)
(shadowpi-tree parent pb a r1)
(set! a (- a b))))
parents)))
) ;; end of module

1
qfwfq.scm
View file

@ -59,7 +59,6 @@
relax-tree
eval-tree
shadowpi-tree
shadowtwopi-tree
tree->sexp
to-string

9
xaueneuax.scm
View file

@ -1,7 +1,7 @@
;; -*- mode: scheme -*-
;;
;; x a u e n e u a x - nqdataflow
;;
;;
;; copyright (C) 2004 FoAM vzw
;; You are granted the rights to distribute and use this software
;; under the terms of the GNU Lesser General Public License as
@ -23,8 +23,9 @@
;;
;; keyboard controls
;; C-n - adds new node, connected to a selected node
;; C-c - conencts 2 selected nodes
;; C-c - connects 2 selected nodes
;; C-d - disconnects selected node
;; C-l - autolayout from selcted node
;; delete - deletes node
;; enter - evaluates current node
@ -117,8 +118,8 @@
(send next remove-child selected-snip))]
[(#\z) ;; C-z re.colour
(colour-tree selected-snip p)]
[(#\l) ;; C-x re.lapse
(shadowtwopi-tree selected-snip p 0 80)]
[(#\l) ;; C-l re.lapse -> splay
(shadowpi-tree selected-snip p 0 63)]
[(#\=) ;; C-= zoom->out
(send p zoom 1.1)]
[(#\-) ;; C-- zoom->in