#: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-macro (mesh . content)
- `(let ((x 0) (y 0) (z 0)
- (angle 0))
- (lambda () ,content)))
+;;; Views
-(define-macro (define-basic-meshes . symbols)
+(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
- `(begin
- (define (,(caar symbols) . params) (mesh (apply ,(cadar symbols) params)))
- (define-basic-meshes ,@(cdr symbols))))))
+ (let ((origin (caar symbols))
+ (dest (cadar symbols)))
+ `(begin
+ (define ,origin (define-primitive ,dest ',origin))
+ (define-primitives ,@(cdr symbols)))))))
-(define-basic-meshes
+(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))
(module-export! (current-module) (list sym))))
projects / gacela.git / blobdiff