X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=src%2Fviews.scm;h=8e2c21cf47c6f7b6a366ad272bb37bf39f8aa49e;hb=bdc03bcc2da4d01745fb542d7a7d642b888b691e;hp=4f35b568b0257bb94008f2614dc48e82b12f5148;hpb=edf14e07f9f1db66cb75f10af54551034171725e;p=gacela.git

diff --git a/src/views.scm b/src/views.scm
index 4f35b56..8e2c21c 100644
--- a/src/views.scm
+++ b/src/views.scm
@@ -15,19 +15,243 @@
 ;;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
-(define-module (gacela draw)
+(define-module (gacela views)
   #:use-module (gacela gacela)
   #:use-module ((gacela video) #:renamer (symbol-prefix-proc 'video:))
   #:use-module ((gacela gl) #:select (glPushMatrix glPopMatrix))
   #:use-module (ice-9 optargs))
 
-(define-macro (define-view name content)
-  `(begin
-     (hash-set! active-views ',name (lambda () (video:glmatrix-block ,content)))
-     ',name))
 
-(define (square . params)
-  (define-view tmp (apply video:draw-square params)))
+;;; Views
+
+(define view-type
+  (make-record-type "view" 
+		    '(id controllers meshes priority)
+		    (lambda (record port)
+		      (format port "#<view: ~a meshes>"
+			      (length (view-meshes record))))))
+
+(define (make-view controllers meshes priority) ((record-constructor view-type) (gensym) controllers meshes priority))
+(define view? (record-predicate view-type))
+(define view-id (record-accessor view-type 'id))
+(define view-meshes (record-accessor view-type 'meshes))
+(define view-meshes-set! (record-modifier view-type 'meshes))
+(define view-controllers (record-accessor view-type 'controllers))
+(define view-controllers-set! (record-modifier view-type 'controllers))
+(define view-priority (record-accessor view-type 'priority))
+
+(defmacro* view (#:key (priority 0) . elements)
+  `(let ((e (view-elements ,@elements)))
+     (make-view (car e) (cadr e) ,priority)))
+
+(define-macro (view-elements . elements)
+  (cond ((null? elements) `'(() ()))
+	(else
+	 `(let ((l (view-elements ,@(cdr elements))))
+	    ,(let ((e (car elements)))
+	       `(cond ((mesh? ,e)
+		       (list (car l) (cons ,e (cadr l))))
+		      ((procedure? ,e)
+		       (list (cons ,(if (list? e) e `(lambda () (,e))) (car l))
+			     (cadr l)))
+		      (else l)))))))
+
+(define (controllers-list list controllers)
+  (cond ((null? controllers)
+	 list)
+	((list? (car controllers))
+	 (assoc-set! (controllers-list list (cdr controllers)) (caar controllers) (cadar controllers)))
+	(else
+	 (assoc-set! (controllers-list list (cdr controllers)) (gensym) (car controllers)))))
+
+(define activated-views '())
+
+(define (sort-views views-alist)
+  (sort views-alist
+	(lambda (v1 v2)
+	  (< (view-priority (cdr v1)) (view-priority (cdr v2))))))
+
+(define (activate-view view)
+  (set! activated-views
+	(sort-views (assoc-set! activated-views (view-id view) view)))
+  view)
+
+(define (view-actived? view)
+  (and (assoc (view-id view) activated-views) #t))
+
+(define (view-priority-set! view priority)
+  ((record-modifier view-type 'priority) view priority)
+  (if (view-actived? view)
+      (set! activated-views (sort-views activated-views))))
+
+(define current-view #f)
+
+(define* (run-views #:optional (views activated-views))
+  (cond ((not (null? views))
+	 (set! current-view (cdar views))
+	 ;((view-body current-view))
+	 (draw-meshes (view-meshes current-view))
+	 (run-views (cdr views)))))
+
+(define (draw-meshes meshes)
+  (cond ((not (null? meshes))
+	 (catch #t
+		  (lambda () (mesh-draw (cdar meshes)))
+		  (lambda (key . args) #f))
+	 (draw-meshes (cdr meshes)))))
+
+
+;(define default-view (activate-view (make-view (lambda () #f))))
+
+
+;;; Meshes
+
+(define mesh-type
+  (make-record-type "mesh" 
+		    '(draw translate turn rotate inner-properties inner-property properties properties-set! property property-set!)
+		    (lambda (record port)
+		      (format port "#<mesh: ~a" (mesh-inner-property record 'type))
+		      (for-each (lambda (x)
+				  (cond (((@ (gacela utils) bound?) (cdr x))
+					 (format port " ~a" x))))
+				(mesh-properties record))
+		      (display ">" port))))
+
+(define mesh? (record-predicate mesh-type))
+
+(define* (make-mesh proc #:optional type)
+  (apply
+   (record-constructor mesh-type)
+   (let ((px 0) (py 0) (pz 0)
+	 (ax 0) (ay 0) (az 0)
+	 (rx 0) (ry 0) (rz 0)
+	 (id (gensym))
+	 (properties '()))
+     (let ((inner-properties
+	    (lambda ()
+	      `((id . ,id) (type . ,type) (x . ,px) (y . ,py) (z . ,pz) (ax . ,ax) (ay . ,ay) (az . ,az) (rx . ,rx) (ry . ,ry) (rz . ,rz)))))
+       (list
+	(lambda ()
+	  "draw"
+	  (video:glmatrix-block
+	   (video:rotate ax ay az)
+	   (video:translate px py pz)
+	   (video:rotate rx ry rz)
+	   (proc properties)))
+	(lambda (x y z)
+	  "translate"
+	  (set! px (+ px x))
+	  (set! py (+ py y))
+	  (set! pz (+ pz z)))
+	(lambda (x y z)
+	  "turn"
+	  (set! ax (+ ax x))
+	  (set! ay (+ ay y))
+	  (set! az (+ az z)))
+	(lambda (x y z)
+	  "rotate"
+	  (set! rx (+ rx x))
+	  (set! ry (+ ry y))
+	  (set! rz (+ rz z)))
+	(lambda ()
+	  "inner-properties"
+	  (inner-properties))
+	(lambda (prop-name)
+	  "inner-property"
+	  (assoc-ref (inner-properties) prop-name))
+	(lambda ()
+	  "properties"
+	  properties)
+	(lambda (new-properties)
+	  "properties-set!"
+	  (set! properties new-properties))
+	(lambda (prop-name)
+	  "property"
+	  (assoc-ref properties prop-name))
+	(lambda (prop-name value)
+	  "property-set!"
+	  (set! properties (assoc-set! properties prop-name value))))))))
+
+(define (mesh-draw mesh)
+  (((record-accessor mesh-type 'draw) mesh)))
+
+(define (mesh-inner-properties mesh)
+  (((record-accessor mesh-type 'inner-properties) mesh)))
+
+(define (mesh-inner-property mesh prop-name)
+  (((record-accessor mesh-type 'inner-property) mesh) prop-name))
+
+(define (mesh-properties mesh)
+  (((record-accessor mesh-type 'properties) mesh)))
+
+(define (mesh-properties-set! mesh new-properties)
+  (((record-accessor mesh-type 'properties-set!) mesh) new-properties))
+
+(define (mesh-property mesh prop-name)
+  (((record-accessor mesh-type 'property) mesh) prop-name))
+
+(define (mesh-property-set! mesh prop-name value)
+  (((record-accessor mesh-type 'property-set!) mesh) prop-name value))
+
+(define* (show mesh #:optional (view current-view))
+  (let ((id (mesh-inner-property mesh 'id))
+	(table (view-meshes view)))
+    (if (not (assoc-ref table id))
+	(view-meshes-set! view (assoc-set! table id mesh))))
+  mesh)
+
+(define* (hide mesh #:optional (view current-view))
+  (let ((id (mesh-inner-property mesh 'id))
+	(table (view-meshes view)))
+    (if (assoc-ref table id)
+	(view-meshes-set! view (assoc-remove! table id))))
+  mesh)
+
+(define* (translate mesh x y #:optional (z 0))
+  (((record-accessor mesh-type 'translate) mesh) x y z)
+  mesh)
+
+(define (turn mesh . params)
+  (apply ((record-accessor mesh-type 'turn) mesh)
+	 (if (>= (length params) 3)
+	     params
+	     (list 0 0 (car params))))
+  mesh)
+
+(define (rotate mesh . params)
+  (apply ((record-accessor mesh-type 'rotate) mesh)
+	 (if (>= (length params) 3)
+	     params
+	     (list 0 0 (car params))))
+  mesh)
+
+
+;;; Primitives
+
+(defmacro* define-primitive (proc #:optional type)
+  `(lambda (. params)
+     (let ((m (make-mesh (lambda (props) (apply ,proc ((@ (gacela utils) arguments-apply) ,proc props))) ,type)))
+       (mesh-properties-set! m ((@ (gacela utils) arguments-calling) ,proc params))
+       m)))
+
+(define-macro (define-primitives . symbols)
+  (cond ((null? symbols)
+	 `#t)
+	(else
+	 (let ((origin (caar symbols))
+	       (dest (cadar symbols)))
+	   `(begin
+	      (define ,origin (define-primitive ,dest ',origin))
+	      (define-primitives ,@(cdr symbols)))))))
+
+(define-primitives
+  (rectangle video:draw-rectangle)
+  (square video:draw-square))
+
+
+;;; Adding extensions to the main loop
+(add-extension! run-views 10)
+
 
 (module-map (lambda (sym var)
 	      (if (not (eq? sym '%module-public-interface))