diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/12-canvas-drawing-language.lisp | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/examples/12-canvas-drawing-language.lisp b/examples/12-canvas-drawing-language.lisp index c87876c..24008c2 100644 --- a/examples/12-canvas-drawing-language.lisp +++ b/examples/12-canvas-drawing-language.lisp @@ -21,11 +21,11 @@ (defun triangle-at (x y) (ww::move-to x y) - (ww::canvas-pen-color 0 200 200 255) + (ww::canvas-pen-color (list 0 200 200 255)) (ww::stroke-rel 150 0) - (ww::canvas-pen-color 0 0 200 255) + (ww::canvas-pen-color (list 0 0 200 255)) (ww::stroke-rel -50 100) - (ww::canvas-pen-color 0 200 0 255) + (ww::canvas-pen-color (list 0 200 0 255)) (ww::stroke-rel -100 -100)) (defun filled-triangle-at (x y) @@ -46,17 +46,32 @@ (mod (* x y) 256) 255)) +(defun flower (&optional (petals 5)) + (ww::canvas-pen-width 1) + (let ((r (sqrt (+ (* 25 25) (* 100 100)))) + (psw (* pi 0.08))) + (loop for a from 0 to (* 2 pi) by (/ (* 2 pi) petals) do + (ww::stroke-rel-bezier + (list (list (* r (sin (- a psw))) + (* r (cos (- a psw)))) + (list (* r (sin (+ a psw))) + (* r (cos (+ a psw)))) + (list 0 0)) + 12)))) + (defun draw-stuff (canvas) (ww::with-canvas canvas - (ww::canvas-pen-color-function #'plaid1) + (ww::canvas-pen-color #'plaid1) (filled-triangle-at 250 200) - (ww::canvas-pen-color-function #'lower-the-bluer) (ww::canvas-pen-width 2) - (ww::stroke-bezier - '((0 0) (200 120) (50 350) (200 100) (300 400)) - 1000) - () - (ww::canvas-pen-color-function) + + ;; temporarily use a different pen + (ww::with-pen-color #'lower-the-bluer + (ww::stroke-bezier + '((0 0) (200 120) (50 350) (200 100) (300 400)) + 12)) ;; back to plaid pen after this + + (flower 28) (ww::canvas-pen-width 1) (dotimes (x 50) (when (evenp x) |