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|
;;;; vrmlserv.l
;;; (c) 1996, Toshihiro Matsui, Electrotechnical Laboratory
;;;
;;;; Internet Server for communication with Java/VRML
;;;
(require :vrmlParser "vrmlParser.l")
(require :geotools "geotools.l")
(defun print-vrml-symbol (sym &optional (strm t))
(format strm "~a "
(cdr (assoc sym
'((transform . "Transform")
(:rotation . "rotation")
(:translation . "translation")
(:children . "children")
)))) )
(defun print-vrml (form &optional (strm t))
(let (item field arg)
(print-vrml-symbol (pop form) strm)
(format strm "{~%")
(while form
(setq item (pop form))
(format strm "~t")
(print-vrml-symbol (setq field (pop item)) strm)
(case field
(:rotation
(setq arg (pop item))
(format strm "~f ~f ~f ~f ~%"
(aref arg 0) (aref arg 1) (aref arg 2) (pop item)) )
(:translation
(setq arg (pop item))
(format strm "~f ~f ~f ~%"
(aref arg 0) (aref arg 1) (aref arg 2)) )
(:children
(setq arg (pop item))
(format strm " [")
(dolist (a arg) (format strm "~s " a))
(format strm "]~%"))
(t (error "unknown vrml field ~s" field)))
)
(format strm "~t}~%~c" 0)
(finish-output strm)
) )
(defun coords2vrml (model)
(let* ((wc (send model :worldcoords))
(ang-axis (send wc :rotation-angle))
(axis (second ang-axis))
(ang (first ang-axis) )
(trans (send wc :pos)))
(list 'transform
;; (list :children (list (send model :name)))
(list :translation trans)
(list :rotation
(if (and axis (not (eql (aref axis 0) *nan*)))
axis
#f(1 0 0))
(if axis ang 0)))))
(provide :vrmlserv)
;;;;;;;;;;;;;;;;;;;;;;;;;;
;; socket server
#|
(defun echo-vrml (strm)
(let ((item) (eof (cons nil nil)))
(setq item (read-vrml strm eof))
(cond ((eql item eof)
(warning-message 5 "; vrml connection ~s is being closed.~%"
strm)
(send *top-selector* :remove-port strm)
(close strm) )
(t
(print-vrml item t)
(print-vrml item strm)
))))
|#
#|
(defun accept-vrml-connection (sp)
(let ((s (make-server-socket-stream sp)))
(send s :name (format nil "VRML_~d" (send s :infd)) )
;; (send *top-selector* :add-port s 'process-vrml s)
(send *top-selector* :add-port s 'process-vrml s)
(warning-message 4
"; vrml connection request on ~s; ~s is created~%" sp s)
))
|#
(defun init-vrml-server (port)
(let* ((sa (make-socket-address :port port :domain af_inet))
(sp (make-socket-port sa)))
(cond ((derivedp sp socket-port)
(send *top-selector* :add-port sp 'accept-vrml-connection sp))
(t
(warning-message 5 "init-vrml-server failed, because of ~S~%"
(unix:syserrlist (- sp))))
))
)
;****************************************************************
(defvar *mouse-scale* 0.05)
(defun process-vrml (strm)
(let* ((eof (cons nil nil))
(item (vrml:read-vrml-1 strm eof)))
(print item)
(cond ((eql item eof)
(warning-message 5 "; vrml connection ~s is being closed; exit.~%"
strm)
(send *top-selector* :remove-port strm)
(close strm)
(exit) )
((eql item :test)
(print item) )
((eql (class item) vrml::LoadWRL)
(let (wrl-objects)
(format t "loading WRL ~s" (send item :get-field 'vrml::url))
(vrml::load-wrl-from-url (send item :get-field 'vrml::url))
;; named vrml nodes are listed in vrml::*nodenames*
(dolist (b vrml::*nodeNames*)
(if (derivedp (cadr b) cascaded-coords)
(progn
(push (cadr b) wrl-objects)
(send tss :add-new-model (cadr b))) ))
)
)
((eql (class item) vrml::Transform)
(print "Transform"))
((eql (class item) vrml::PointerMotion)
(print 'pointermotion)
(let ((new-coords (process-transform item)))
(print-vrml new-coords strm) ) )
(t (print (list (class item) vrml::loadwrl)))
)))
(defun process-transform (item)
(setq *vrml-message* item)
(let* ((children (send item :get-field 'vrml::children))
(translation (send item :get-field 'vrml::translation))
(rotation (send item :get-field 'vrml::rotation))
rot-mode
model
trx try trz
rot-x rot-y rot-z
new-coords)
(setq model (send tss :find-model (caar children)))
(unless model (warn "model ~s not found." children))
(unless (equal (list model) (send tss :selected-models))
(send tss :new-selection (list model)))
(setq trx (round (aref translation 0))
try (round (aref translation 1))
trz (round (aref translation 2)) )
(setq rot-mode (second rotation)
rotation (first rotation))
(print (list :pointermotion rot-mode (list trx try)))
(send tss :move-xy trx try)
(print (send model :worldpos))
;;
;(setf (car children-root) (cadr children-root)
; (cdr children-root) (cddr children-root))
(print (setq new-coords (coords2vrml model)))
)
)
(defun accept-vrml-connection (sp)
(let ((pid (unix:fork)))
(when (= pid 0)
;; child process
(warning-message 5 ";;geotools forked, pid=~d~%" (unix:getpid))
(let ((s (make-server-socket-stream sp)))
;; (x:closedisplay x:*display*)
(send *top-selector* :remove-port (x::display-fd))
(x:init-xwindow)
(tss (format nil "eusx constraint server ~d" (unix::getpid)))
(setq *check-motion-constraint* t)
; (load "fusuma.l")
; (send tss :add-new-model railbottom)
; (send tss :add-new-model railtop)
; (send tss :add-new-model fusumal)
; (send tss :add-new-model fusumar)
;;
(send s :name (format nil "VRML_~d" (send s :infd)) )
(send *top-selector* :add-port s 'process-vrml s)
(warning-message 4
";; vrml connection request on ~s~%;; ~s is created~%" sp s)
)
)) )
(defun fusuma-server ()
(init-vrml-server 5001))
|
