235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
|
(if (or (not llx)(< ollx llx))(set! llx ollx))
(if (or (not lly)(< olly lly))(set! lly olly))
(if (or (not ulx)(> oulx ulx))(set! ulx oulx))
(if (or (not uly)(> ouly uly))(set! uly ouly))))
xtnt-lst)
(list llx lly ulx uly)))
;;======================================================================
;; Unravel and draw the objects
;;======================================================================
;; with get-extents = #t return the extents
;; with draw = #f don't actually draw the object
;;
(define (vg:draw-obj drawing obj #!key (draw #t))
;; (print "obj type: " (vg:obj-type obj))
(case (vg:obj-type obj)
((r)(vg:draw-rect drawing obj draw: draw))))
;; given a rect obj draw it on the canvas applying first the drawing
;; scale and offset
;;
(define (vg:draw-rect drawing obj #!key (draw #t))
(let* ((cnv (vg:drawing-cnv drawing))
(pts (vg:drawing-apply-scale drawing (vg:obj-pts obj)))
(llx (car pts))
(lly (cadr pts))
(ulx (caddr pts))
(uly (cadddr pts)))
(if draw (canvas-rectangle! cnv llx ulx lly uly))
pts)) ;; return extents
(define (vg:draw drawing draw-mode . instnames)
(let ((insts (vg:drawing-insts drawing))
(res '()))
(for-each
(lambda (instname)
(let* ((inst (hash-table-ref insts instname))
|
>
>
>
>
>
>
>
>
>
>
>
|
>
>
>
>
>
>
>
>
>
>
>
|
>
|
|
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
|
(if (or (not llx)(< ollx llx))(set! llx ollx))
(if (or (not lly)(< olly lly))(set! lly olly))
(if (or (not ulx)(> oulx ulx))(set! ulx oulx))
(if (or (not uly)(> ouly uly))(set! uly ouly))))
xtnt-lst)
(list llx lly ulx uly)))
;;======================================================================
;; color
;;======================================================================
(define (vg:rgb->number r g b #!key (a 0))
(u32vector-ref (blob->u32vector (u8vector->blob (list->u8vector (list a r g b)))) 0))
(define (vg:iup-color->number iup-color)
(apply vg:rgb->number (map string->number (string-split iup-color))))
;;======================================================================
;; Unravel and draw the objects
;;======================================================================
;; with get-extents = #t return the extents
;; with draw = #f don't actually draw the object
;;
(define (vg:draw-obj drawing obj #!key (draw #t))
;; (print "obj type: " (vg:obj-type obj))
(case (vg:obj-type obj)
((r)(vg:draw-rect drawing obj draw: draw))))
;; given a rect obj draw it on the canvas applying first the drawing
;; scale and offset
;;
(define (vg:draw-rect drawing obj #!key (draw #t))
(let* ((cnv (vg:drawing-cnv drawing))
(pts (vg:drawing-apply-scale drawing (vg:obj-pts obj)))
(fill-color (vg:obj-fill-color obj))
(line-color (vg:obj-line-color obj))
(llx (car pts))
(lly (cadr pts))
(ulx (caddr pts))
(uly (cadddr pts))
(w (- ulx llx))
(h (- uly lly)))
(if draw
(let ((prev-background-color (canvas-background cnv))
(prev-foreground-color (canvas-foreground cnv)))
(if fill-color (canvas-foreground-set! cnv fill-color))
(canvas-box! cnv llx ulx lly uly) ;; docs are all over the place on this one.;; w h)
(if line-color
(canvas-foreground-set! cnv line-color)
(if fill-color
(canvas-foreground-set! cnv prev-background-color)))
(canvas-rectangle! cnv llx ulx lly uly)
(canvas-foreground-set! cnv prev-background-color)))
pts)) ;; return extents
(define (vg:draw drawing draw-mode . instnames)
(let ((insts (vg:drawing-insts drawing))
(res '()))
(for-each
(lambda (instname)
(let* ((inst (hash-table-ref insts instname))
|