From: Javier Sancho Date: Mon, 23 Jul 2012 19:25:34 +0000 (+0200) Subject: Properties for meshes. X-Git-Url: https://git.jsancho.org/?a=commitdiff_plain;h=5dd13d5513fd1cb315f9ce039d54efa451a3aa94;p=gacela.git Properties for meshes. --- diff --git a/src/views.scm b/src/views.scm index 2873bdb..0662577 100644 --- a/src/views.scm +++ b/src/views.scm @@ -30,8 +30,9 @@ (let ((x 0) (y 0) (z 0) (ax 0) (ay 0) (az 0) (rx 0) (ry 0) (rz 0) - (id (gensym))) - (let ((get-properties + (id (gensym)) + (properties '())) + (let ((inner-properties (lambda () `((id . ,id) (x . ,x) (y . ,y) (z . ,z) (ax . ,ax) (ay . ,ay) (az . ,az) (rx . ,rx) (ry . ,ry) (rz . ,rz))))) (lambda (option . params) @@ -54,10 +55,16 @@ (set! rx (+ rx (car params))) (set! ry (+ ry (cadr params))) (set! rz (+ rz (caddr params)))) - ((get-properties) - (get-properties)) - ((get-property) - (assoc-ref (get-properties) (car params)))))))) + ((inner-properties) + (inner-properties)) + ((inner-property) + (assoc-ref (inner-properties) (car params))) + ((properties) + properties) + ((property) + (assoc-ref properties (car params))) + ((property-set!) + (set! properties (assoc-set! properties (car params) (cadr params))))))))) (define* (show mesh #:optional (view default-view)) (let ((id (mesh 'get-property 'id))) @@ -87,9 +94,13 @@ (cond ((null? symbols) `#t) (else - `(begin - (define (,(caar symbols) . params) (mesh (lambda () (apply ,(cadar symbols) params)))) - (define-primitives ,@(cdr symbols)))))) + (let ((origin (caar symbols)) + (dest (cadar symbols))) + `(begin + ,(if (and (list? origin) (list? dest)) + `(define* ,origin #f) + `(define (,origin . params) (mesh (lambda () (apply ,dest params))))) + (define-primitives ,@(cdr symbols))))))) (define-primitives (rectangle video:draw-rectangle)