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(make-vg:drawing libs: (make-hash-table) insts: (make-hash-table)))
;; make a rectangle obj
;;
(define (vg:make-rect x1 y1 x2 y2 #!key (line-color #f)(fill-color #f))
(make-vg:obj type: 'r pts: (list x1 y1 x2 y2) text: #f line-color: line-color fill-color: fill-color))
;; add obj to comp
;;
(define (vg:add-objs-to-comp comp . objs)
(vg:comp-objs-set! comp (append (vg:comp-objs comp) objs)))
;; add comp to lib
;;
(define (vg:add-comp-to-lib lib compname comp)
(hash-table-set! (vg:lib-comps lib) compname comp))
;; instanciate component in drawing
;;
(define (vg:instantiate drawing libname compname instname xoff yoff t #!key (scale 1)(mirrx #f)(mirry #f))
(let ((inst (make-vg:inst libname: libname compname: compname xoff: xoff yoff: yoff theta: t scale: scale mirrx: mirrx mirry: mirry)) )
(hash-table-set! (vg:drawing-insts drawing) instname inst)))
;; get component from drawing (look in apropriate lib) given libname and compname
(define (vg:get-component drawing libname compname)
(let* ((lib (hash-table-ref (vg:drawing-libs drawing) libname))
(inst (hash-table-ref (vg:lib-comps lib) compname)))
inst))
;; register lib with drawing
;;
(define (vg:add-lib drawing libname lib)
(hash-table-set! (vg:drawing-libs drawing) libname lib))
;;======================================================================
;; map objects given offset, scale and mirror
;;======================================================================
(define (vg:map-obj xoff yoff theta scale mirrx mirry obj)
(case (vg:obj-type obj)
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(make-vg:drawing libs: (make-hash-table) insts: (make-hash-table)))
;; make a rectangle obj
;;
(define (vg:make-rect x1 y1 x2 y2 #!key (line-color #f)(fill-color #f))
(make-vg:obj type: 'r pts: (list x1 y1 x2 y2) text: #f line-color: line-color fill-color: fill-color))
;; get extents, use knowledge of type ...
;;
(define (vg:obj-get-extents obj)
(let ((type (vg:obj-type obj)))
(case type
((r)(vg:rect-get-extents obj)))))
(define (vg:rect-get-extents obj)
(vg:obj-pts obj)) ;; extents are just the points for a rectangle
;;======================================================================
;; components
;;======================================================================
;; add obj to comp
;;
(define (vg:add-objs-to-comp comp . objs)
(vg:comp-objs-set! comp (append (vg:comp-objs comp) objs)))
;; use the struct. leave this here to remind of this!
;;
;; (define (vg:comp-get-objs comp)
;; (vg:comp-objs comp))
;; add comp to lib
;;
(define (vg:add-comp-to-lib lib compname comp)
(hash-table-set! (vg:lib-comps lib) compname comp))
;; instanciate component in drawing
;;
(define (vg:instantiate drawing libname compname instname xoff yoff t #!key (scale 1)(mirrx #f)(mirry #f))
(let ((inst (make-vg:inst libname: libname compname: compname xoff: xoff yoff: yoff theta: t scale: scale mirrx: mirrx mirry: mirry)) )
(hash-table-set! (vg:drawing-insts drawing) instname inst)))
;; get component from drawing (look in apropriate lib) given libname and compname
(define (vg:get-component drawing libname compname)
(let* ((lib (hash-table-ref (vg:drawing-libs drawing) libname))
(inst (hash-table-ref (vg:lib-comps lib) compname)))
inst))
(define (vg:component-get-extents comp)
(let ((llx #f)
(lly #f)
(ulx #f)
(uly #f)
(objs (vg:comp-objs comp)))
(for-each
(lambda (obj)
(let* ((extents (vg:get-extents obj))
(ollx (list-ref extents 0))
(olly (list-ref extents 1))
(oulx (list-ref extents 2))
(ouly (list-ref extents 3)))
(if (or (not llx)(< ollx llx))(set! llx ollx))
(if (or (not lly)(< olly llx))(set! llx ollx))
(if (or (not ulx)(< ollx llx))(set! llx ollx))
(if (or (not uly)(< ollx llx))(set! llx ollx))))
objs)
(list llx lly ulx uly)))
;;======================================================================
;; libraries
;;======================================================================
;; register lib with drawing
;;
(define (vg:add-lib drawing libname lib)
(hash-table-set! (vg:drawing-libs drawing) libname lib))
(define (vg:get-lib drawing libname)
(hash-table-ref/default (vg:drawing-libs drawing) libname #f))
(define (vg:get/create-lib drawing libname)
(let ((lib (vg:get-lib drawing libname)))
(if lib
lib
(let ((newlib (vg:lib-new)))
(vg:add-lib drawing libname newlib)
newlib))))
;;======================================================================
;; map objects given offset, scale and mirror
;;======================================================================
(define (vg:map-obj xoff yoff theta scale mirrx mirry obj)
(case (vg:obj-type obj)
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