#:use-module ((gacela gl) #:select (glPushMatrix glPopMatrix))
#:use-module (ice-9 optargs))
+
+;;; Views
+
+(define default-view (make-hash-table))
+
+(define* (draw-meshes #:optional (meshes (hash-map->list (lambda (k v) v) default-view)))
+ (cond ((not (null? meshes))
+ (catch #t
+ (lambda () (mesh-draw (car meshes)))
+ (lambda (key . args) #f))
+ (draw-meshes (cdr meshes)))))
+
(define-macro (define-view name content)
`(begin
(hash-set! active-views ',name (lambda () (video:glmatrix-block ,content)))
',name))
-(define (mesh primitive)
- (let ((x 0) (y 0) (z 0)
- (ax 0) (ay 0) (az 0)
- (rx 0) (ry 0) (rz 0)
- (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)
- (case option
- ((draw)
- (video:glmatrix-block
- (video:rotate ax ay az)
- (video:translate x y z)
- (video:rotate rx ry rz)
- (primitive)))
- ((translate)
- (set! x (+ x (car params)))
- (set! y (+ y (cadr params)))
- (set! z (+ z (caddr params))))
- ((turn)
- (set! ax (+ ax (car params)))
- (set! ay (+ ay (cadr params)))
- (set! az (+ az (caddr params))))
- ((rotate)
- (set! rx (+ rx (car params)))
- (set! ry (+ ry (cadr params)))
- (set! rz (+ rz (caddr 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)))))))))
+
+;;; 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* (mesh proc #:optional mesh-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)) (type mesh-type)
+ (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 default-view))
- (let ((id (mesh 'inner-property 'id)))
+ (let ((id (mesh-inner-property mesh 'id)))
(if (not (hash-ref view id))
(hash-set! view id mesh))))
(define* (hide mesh #:optional (view default-view))
- (hash-remove! view (mesh 'inner-property 'id)))
+ (hash-remove! view (mesh-inner-property mesh 'id)))
(define* (translate mesh x y #:optional (z 0))
- (mesh 'translate x y z)
+ (((record-accessor mesh-type 'translate) mesh) x y z)
mesh)
(define (turn mesh . params)
- (if (>= (length params) 3)
- (apply mesh (cons 'turn params))
- (mesh 'turn 0 0 (car params)))
+ (apply ((record-accessor mesh-type 'turn) mesh)
+ (if (>= (length params) 3)
+ params
+ (list 0 0 (car params))))
mesh)
(define (rotate mesh . params)
- (if (>= (length params) 3)
- (apply mesh (cons 'rotate params))
- (mesh 'rotate 0 0 (car params)))
+ (apply ((record-accessor mesh-type 'rotate) mesh)
+ (if (>= (length params) 3)
+ params
+ (list 0 0 (car params))))
mesh)
;;; Primitives
-(define (basic proc)
- ((@ (system vm program) program-lambda-list) proc))
+(defmacro* primitive (proc #:optional type)
+ `(lambda (. params)
+ (let ((m (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)
(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 ,origin (primitive ,dest ',origin))
(define-primitives ,@(cdr symbols)))))))
(define-primitives
(if (not (eq? sym '%module-public-interface))
(module-export! (current-module) (list sym))))
(current-module))
+
+
+;;; Adding extensions to the main loop
+(add-extension! draw-meshes 50)