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xpal.pro @ 2

Last change on this file since 2 was 2, checked in by opalod, 22 years ago
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1	; $Id$
2	;
3	; Copyright (c) 1992-1998, Research Systems, Inc. All rights reserved.
4	; Unauthorized reproduction prohibited.
5	;+
6	; NAME:
7	; XPAL
8	;
9	; PURPOSE:
10	; comme xpalette mais plus court a ecrire et possede en plus
11	; une touche save qui (grace a la routine newpalette) permet de
12	; sauver la routine que l''on vient de faire. Rq qd on appuie
13	; sur la touche predefined appelle xlct plutot que xloadct
14	;
15	; CATEGORY:
16	; Color tables, widgets.
17	;
18	; CALLING SEQUENCE:
19	; XPAL
20	;
21	; INPUTS:
22	; No explicit inputs. The current color table is used as a starting
23	; point.
24	;
25	; KEYWORD PARAMETERS:
26	; BLOCK: Set this keyword to have XMANAGER block when this
27	; application is registered. By default the Xmanager
28	; keyword NO_BLOCK is set to 1 to provide access to the
29	; command line if active command line processing is available.
30	; Note that setting BLOCK for this application will cause
31	; all widget applications to block, not only this
32	; application. For more information see the NO_BLOCK keyword
33	; to XMANAGER.
34	; UPDATECALLBACK: Set this keyword to a string containing the name of
35	; a user-supplied procedure that will be called when the color
36	; table is updated by XLOADCT. The procedure may optionally
37	; accept a keyword called DATA, which will be automatically
38	; set to the value specified by the optional UPDATECBDATA
39	; keyword.
40	; UPDATECBDATA: Set this keyword to a value of any type. It will be
41	; passed via the DATA keyword to the user-supplied procedure
42	; specified via the UPDATECALLBACK keyword, if any. If the
43	; UPDATECBDATA keyword is not set the value accepted by the
44	; DATA keyword to the procedure specified by UPDATECALLBACK
45	; will be undefined.
46	;
47	; OUTPUTS:
48	; None.
49	;
50	; COMMON BLOCKS:
51	; COLORS: Contains the current RGB color tables.
52	; XP_COM: Private to this module.
53	;
54	; SIDE EFFECTS:
55	; XPAL uses two colors from the current color table as
56	; drawing foreground and background colors. These are used
57	; for the RGB plots on the left, and the current index marker on
58	; the right. This means that if the user set these two colors
59	; to the same value, the XPAL display could become unreadable
60	; (like writing on black paper with black ink). XPAL minimizes
61	; this possibility by noting changes to the color map and always
62	; using the brightest available color for the foreground color
63	; and the darkest for the background. Thus, the only way
64	; to make XPAL's display unreadable is to set the entire color
65	; map to a single color, which is highly unlikely. The only side
66	; effect of this policy is that you may notice XPAL redrawing
67	; the entire display after you've modified the current color.
68	; This simply means that the change has made XPAL pick new
69	; drawing colors.
70	;
71	; The new color tables are saved in the COLORS common and loaded
72	; to the display.
73	;
74	; PROCEDURE:
75	; The XPAL widget has the following controls:
76	;
77	; Left: Three plots showing the current Red, Green, and Blue vectors.
78	;
79	; Center: A status region containing:
80	; 1) The total number of colors.
81	; 2) The current color. XPAL allows changing
82	; one color at a time. This color is known as
83	; the "current color" and is indicated in the
84	; color spectrum display with a special marker.
85	; 3) The current mark index. The mark is used to
86	; remember a color index. It is established by
87	; pressing the "Set Mark Button" while the current
88	; color index is the desired mark index.
89	; 4) The current color. The special marker used in
90	; color spectrum display prevents the user from seeing
91	; the color of the current index, but it is visible
92	; here.
93	;
94	; A panel of control buttons, which do the following when
95	; pressed:
96	;
97	; Done: Exits XPAL.
98	;
99	; Predefined: Starts XLOADCT to allow selection of one of the
100	; predefined color tables.
101	;
102	; Help: Supplies help information similar to this header.
103	;
104	; Redraw: Completely redraws the display using the current
105	; state of the color map.
106	;
107	; Set Mark: Set the value of the mark index to the
108	; current index.
109	;
110	; Switch Mark: Exchange the mark and the current index.
111	;
112	; Copy Current: Every color lying between the current
113	; index and the mark index (inclusive) is given
114	; the current color.
115	;
116	; Interpolate: The colors lying between the current
117	; index and the mark index are interpolated linearly
118	; to lie between the colors of two endpoints.
119	; save: permet de sauver la palette qui est
120	; actuellement a l''ecran. Qd on appuie sur ce
121	; bouton, un widget apparait qui demande:
122	; 1) le nom a donner a la palette que l''on veut sauver
123	; 2) le numero de la palette que l''on veut
124	; eventuellement ecrase par la nouvelle
125	; palette.Si aucun numero n''est specifie la
126	; nouvelle palette estajoutee aux anciennes.
127	; 3) le nom du fichier qui contient les
128	; palettes. Rq: suivre eventuellement les
129	; indications fournis au prompteur.
130	;
131	;
132	; Three sliders (R, G, and B) that allow the user to modify the
133	; current color.
134	;
135	; Right: A display which shows the current color map as a series of
136	; squares. Color index 0 is at the upper left. The color index
137	; increases monotonically by rows going left to right and top
138	; to bottom. The current color index is indicated by a special
139	; marker symbol. There are 4 ways to change the current color:
140	; 1) Press any mouse button while the mouse
141	; pointer is over the color map display.
142	; 2) Use the "By Index" slider to move to
143	; the desired color index.
144	; 3) Use the "Row" Slider to move the marker
145	; vertically.
146	; 4) Use the "Column" Slider to move the marker
147	; horizontally.
148	;
149	; MODIFICATION HISTORY:
150	; addaptation de xpalette pour ajouter un bouton save par
151	; Gima Nicolas (nglod@ipsl.jussieu.fr) et par Masson
152	; Sebastien (smlod@ipsl.jussieu.fr)
153	;-
154
155	function XP_NEW_COLORS
156	; Choose the best foreground and background colors for the current
157	; color maps and set !P appropriately. Returns 1 if the colors changed,
158	; 0 otherwise.
159	common xp_com, xpw, state
160
161	res = 0
162	junk = CT_LUMINANCE(dark=dark_col, bright=bright_col)
163
164	if (bright_col ne !p.color) then begin
165	!p.color = bright_col
166	res = 1
167	endif
168
169	if (dark_col ne !p.background) then begin
170	!p.background = dark_col
171	res = 1
172	endif
173
174	return, res
175	end
176
177	pro XP_ALERT_CALLER
178
179	common xp_com, xpw, state
180
181	ErrorStatus = 0
182	CATCH, ErrorStatus
183	if (ErrorStatus NE 0) then begin
184	CATCH, /CANCEL
185	v = DIALOG_MESSAGE(['Unexpected error in XPAL:', $
186	'!ERR_STRING = ' + !ERR_STRING], $
187	/ERROR)
188	return
189	endif
190	if (STRLEN(state.updt_callback) gt 0) then begin
191	if (PTR_VALID(state.p_updt_cb_data)) then begin
192	CALL_PROCEDURE, state.updt_callback, DATA=*(state.p_updt_cb_data)
193	endif else begin
194	CALL_PROCEDURE, state.updt_callback
195	endelse
196	endif
197	end
198
199	pro XP_XLCTCALLBACK
200	; For visuals with static colormaps, update the graphics
201	; after a change by XLOADCT.
202	if ((COLORMAP_APPLICABLE(redrawRequired) GT 0) and $
203	(redrawRequired GT 0)) then begin
204	XP_REDRAW
205	endif
206
207	end
208
209	pro XP_REDRAW
210
211	common xp_com, xpw, state
212
213	junk = XP_NEW_COLORS()
214	WIDGET_CONTROL, xpw.colorsel, set_value=-1
215	XP_REPLOT, !p.color, 'F' ; Update the plots of RGB
216	; Let the caller of XPAL know that the color table was modified
217	XP_ALERT_CALLER
218	end
219
220
221
222	pro XP_REPLOT, color_index, type
223	; Re-draw the RGB plots. Type has the following possible values.
224	;; - 'D': Draw the data part of all three plots
225	; - 'F': draw all three plots
226	; - 'R': Draw the data part of the Red plot
227	; - 'G': Draw the data part of the Green plot
228	; - 'B': Draw the data part of the Blue plot
229
230	common xp_com, xpw, state
231	common colors, r_orig, g_orig, b_orig, r_curr, g_curr, b_curr
232	common pscale, r_x_s, r_y_s, g_x_s, g_y_s, b_x_s, b_y_s
233
234	; Update the plots of RGB
235	save_win = !D.WINDOW
236	wset, state.plot_win
237	save_p_region = !p.region
238	save_x_margin = !x.margin
239	save_y_margin = !y.margin
240	save_x_s = !x.s
241	save_y_s = !y.s
242	save_x_type = !x.type
243	save_y_type = !y.type
244
245	!y.margin= [2, 2]
246	!x.margin= [6, 2]
247
248	if (type eq 'F') then begin
249	!p.region = [0,.6667, 1, 1]
250	plot,xstyle=2, ystyle=3, yrange=[0, 260], r_curr, title='Red'
251	r_x_s = !x.s
252	r_y_s = !y.s
253
254	!p.region = [0,.333, 1, .6667]
255	plot,/noerase, xstyle=2,ystyle=3, yrange=[0, 260], g_curr, title='Green'
256	g_x_s = !x.s
257	g_y_s = !y.s
258
259	!p.region = [0,0, 1, .333]
260	plot,/noerase, xstyle=2,ystyle=3, yrange=[0, 260], b_curr, title='Blue'
261
262	b_x_s = !x.s
263	b_y_s = !y.s
264	endif else begin
265	if ((type eq 'D') or (type eq 'R')) then begin
266	!p.region = [0,.6667, 1, 1]
267	!x.s = r_x_s
268	!y.s = r_y_s
269	oplot, r_curr, color=color_index
270	endif
271	if ((type eq 'D') or (type eq 'G')) then begin
272	!p.region = [0,.333, 1, .6667]
273	!x.s = g_x_s
274	!y.s = g_y_s
275	oplot, g_curr, color=color_index
276	endif
277	if ((type eq 'D') or (type eq 'B')) then begin
278	!p.region = [0,0, 1, .333]
279	!x.s = b_x_s
280	!y.s = b_y_s
281	oplot, b_curr, color=color_index
282	endif
283	endelse
284
285	empty
286	WSET, save_win
287	!p.region = save_p_region
288	!x.margin = save_x_margin
289	!y.margin = save_y_margin
290	!x.s = save_x_s
291	!y.s = save_y_s
292	!x.type = save_x_type
293	!y.type = save_y_type
294
295	end
296
297
298
299
300	pro XP_CHANGE_COLOR, type, value
301	; Change current color. Type has the following possible values.
302	; - 'R': Change the R part of the current color
303	; - 'G': ...
304	; - 'B': ...
305	common xp_com, xpw, state
306	common colors, r_orig, g_orig, b_orig, r_curr, g_curr, b_curr
307
308
309	cur_idx = state.cur_idx
310
311	XP_REPLOT, !p.background, type
312
313	if (type eq 'R') then r_curr[cur_idx] = value;
314	if (type eq 'G') then g_curr[cur_idx] = value;
315	if (type eq 'B') then b_curr[cur_idx] = value;
316
317	tvlct, r_curr[cur_idx], g_curr[cur_idx], b_curr[cur_idx], cur_idx
318
319	if (XP_NEW_COLORS()) then begin
320	; Highlight the current position using the marker
321	WIDGET_CONTROL, xpw.colorsel, set_value=-1 ; Re-initialize
322	XP_REPLOT, !p.color, 'F'
323	endif else begin
324	XP_REPLOT, !p.color, type
325	endelse
326
327	; For visuals with static colormaps, update the graphics
328	; of the current color.
329	if ((COLORMAP_APPLICABLE(redrawRequired) GT 0) and $
330	(redrawRequired GT 0)) then begin
331	; Mark new square
332	tmp = !D.WINDOW
333	wset, state.cur_color_win
334	erase, color=state.cur_idx
335	wset, tmp
336	endif
337
338	; Let the caller of XPAL know that the color table was modified
339	xp_alert_caller
340
341	end
342
343
344
345
346
347
348
349	pro XP_BUTTON_EVENT, event
350
351	common xp_com, xpw, state
352	common colors, r_orig, g_orig, b_orig, r_curr, g_curr, b_curr
353
354	; NOTE: The value of these tags depend on the order of the buttons
355	; in the base.
356	case (event.value) of
357
358	; DONE
359	0: begin
360	empty
361	r_orig = r_curr & g_orig = g_curr & b_orig = b_curr ;new orig color tbl
362	WIDGET_CONTROL, /DESTROY, event.top
363	!p = state.old_p
364	end
365
366	; PREDEFINED
367	1: xlct, /silent, group=xpw.base, UPDATECALLBACK='XP_XLCTCALLBACK'
368
369	; HELP
370	2: XDisplayFile, FILEPATH("xpal.txt", subdir=['help', 'widget']), $
371	TITLE = "Xpal Help", GROUP = event.top, WIDTH = 55, HEIGHT = 16
372
373	; REDRAW
374	3: XP_REDRAW
375
376	; SET MARK
377	4: begin
378	state.mark_idx = state.cur_idx
379	WIDGET_CONTROL, xpw.mark_label, $
380	set_value=strcompress(state.mark_idx, /REMOVE)
381	end
382
383	; SWITCH MARK
384	5 : if (state.mark_idx ne state.cur_idx) then begin
385	tmp = state.mark_idx
386	state.mark_idx = state.cur_idx
387	state.cur_idx = tmp
388	WIDGET_CONTROL, xpw.colorsel, set_value=tmp
389	WIDGET_CONTROL, xpw.idx_label, $
390	set_value=strcompress(state.cur_idx, /REMOVE)
391	WIDGET_CONTROL, xpw.mark_label, $
392	set_value=strcompress(state.mark_idx, /REMOVE)
393	endif
394
395	; COPY CURRENT
396	6 : begin
397	do_copy:
398	cur_idx = state.cur_idx
399	if (state.mark_idx le cur_idx) then begin
400	s = state.mark_idx
401	e = cur_idx
402	endif else begin
403	s = cur_idx
404	e = state.mark_idx
405	endelse
406	n = e-s+1
407	XP_REPLOT, !p.background, 'D'
408	if (event.value eq 6) then begin
409	r_curr[s:e] = r_curr[cur_idx]
410	g_curr[s:e] = g_curr[cur_idx]
411	b_curr[s:e] = b_curr[cur_idx]
412	endif else begin ; Interpolate
413	scale = findgen(n)/float(n-1)
414	r_curr[s:e] = r_curr[s] + (fix(r_curr[e]) - fix(r_curr[s])) * scale
415	g_curr[s:e] = g_curr[s] + (fix(g_curr[e]) - fix(g_curr[s])) * scale
416	b_curr[s:e] = b_curr[s] + (fix(b_curr[e]) - fix(b_curr[s])) * scale
417	endelse
418	tvlct, r_curr[s:e], g_curr[s:e], b_curr[s:e], s
419	if (XP_NEW_COLORS()) then begin
420	WIDGET_CONTROL, xpw.colorsel, SET_VALUE=-1
421	XP_REPLOT, !p.color, 'F'
422	endif else begin
423	XP_REPLOT, !p.color, 'D'
424	endelse
425	; Let the caller of XPAL know that the color table was modified
426	xp_alert_caller
427	end
428
429	7: goto, do_copy
430	8: BEGIN
431	COMMON basecommon, bas212, bas222, bas232
432	base = WIDGET_BASE(/COLUMN, /FRAME)
433	bas1 = WIDGET_LABEL(base, value = 'Save')
434	bas2 = WIDGET_BASE(base, /COLUMN)
435	bas21 = WIDGET_BASE(bas2, /COLUMN)
436	bas211 = WIDGET_LABEL(bas21, value = 'Palette Name : ')
437	bas212 = WIDGET_TEXT(bas21, value = 'Noname', /editable)
438	bas22 = WIDGET_BASE(bas2, /COLUMN)
439	bas221 = WIDGET_LABEL(bas22, value = ' Overwrite palette number : ')
440	bas222 = WIDGET_TEXT(bas22, value = '', /editable)
441	bas23 = WIDGET_BASE(bas2, /COLUMN)
442	bas231 = WIDGET_LABEL(bas23, value = 'file name : ')
443	bas232 = WIDGET_TEXT(bas23, value = 'palette.tbl', /editable)
444	bas3 = WIDGET_BASE(base, /ROW)
445	ok = WIDGET_BUTTON(bas3, value = 'OK',$
446	/ALIGN_LEFT, /FRAME, UVALUE = 'ok')
447	cancel = WIDGET_BUTTON(bas3, value = 'CANCEL',$
448	/ALIGN_RIGHT, /FRAME, UVALUE = 'cancel')
449	WIDGET_CONTROL, base, /REALIZE
450	; WIDGET_CONTROL, base, SET_UVALUE = drawID
451	XMANAGER, 'xp_button_event', base
452
453
454
455	END
456	else:
457	endcase
458
459	end
460
461
462	PRO xp_button_event_event, ev
463	COMMON basecommon, bas212, bas222, bas232
464	WIDGET_CONTROL, ev.id, GET_UVALUE = uval
465	IF(TAG_NAMES(ev, /STRUCTURE_NAME) EQ 'WIDGET_BUTTON')$
466	THEN BEGIN
467	CASE uval OF
468	'ok' :BEGIN
469	WIDGET_CONTROL, bas212, GET_VALUE = palname
470	WIDGET_CONTROL, bas222, GET_VALUE = over
471	WIDGET_CONTROL, bas232, GET_VALUE = fichname
472	if over[0] EQ '' then over = 255 ELSE over = long(over)
473	newpalette,palname[0], OVER = over[0], file = fichname[0]
474	WIDGET_CONTROL, ev.top, /DESTROY
475	END
476	'cancel': WIDGET_CONTROL, ev.top, /DESTROY
477	ENDCASE
478	ENDIF
479
480	END
481
482
483
484
485
486	pro XP_EVENT, event
487
488	common xp_com, xpw, state
489	common colors, r_orig, g_orig, b_orig, r_curr, g_curr, b_curr
490
491	case (event.id) of
492
493	xpw.button_base: XP_BUTTON_EVENT, event
494
495	xpw.rgb_base: begin
496	cur_idx = state.cur_idx
497	if (event.r ne r_curr[cur_idx]) then XP_CHANGE_COLOR, "R", event.r
498	if (event.g ne g_curr[cur_idx]) then XP_CHANGE_COLOR, "G", event.g
499	if (event.b ne b_curr[cur_idx]) then XP_CHANGE_COLOR, "B", event.b
500	end
501
502	xpw.colorsel: begin
503	cur_idx = state.cur_idx
504	new_pos = event.value ne cur_idx
505	; Update the RBG sliders
506	if (event.value ne cur_idx) then begin
507	state.cur_idx = (cur_idx = event.value)
508	WIDGET_CONTROL, xpw.idx_label, $
509	set_value=strcompress(cur_idx, /REMOVE_ALL)
510	; Mark new square
511	tmp = !D.WINDOW
512	wset, state.cur_color_win
513	erase, color=cur_idx
514	wset, tmp
515
516	WIDGET_CONTROL, xpw.rgb_base, $
517	set_value=[r_curr[cur_idx], g_curr[cur_idx], b_curr[cur_idx]]
518	endif
519	end
520
521	else:
522	endcase
523
524	end
525
526
527
528
529
530
531
532	pro XPAL, group=group, BLOCK=block, UPDATECALLBACK=updt_cb_name, $
533	UPDATECBDATA=updt_cb_data
534
535
536	common xp_com, xpw, state
537	common colors, r_orig, g_orig, b_orig, r_curr, g_curr, b_curr
538
539	IF N_ELEMENTS(updt_cb_name) EQ 0 THEN updt_callback="" $
540	ELSE updt_callback=updt_cb_name
541	IF N_ELEMENTS(updt_cb_data) GT 0 THEN p_updt_cb_data=PTR_NEW(updt_cb_data) $
542	ELSE p_updt_cb_data=PTR_NEW()
543
544	xpw = { xp_widgets, base:0L, $
545	colorsel:0L, mark_label:0L, idx_label:0L, button_base:0L, rgb_base:0L}
546
547	state = {old_p:!p, $ ; Original value of !P
548	mark_idx:0, $ ; Current mark index
549	cur_idx:0, $ ; Current index
550	cur_color_win:0, $ ; Current Color draw window index
551	plot_win:0, $ ; RGB plot draw window index
552	updt_callback: updt_callback, $ ; user-defined callback (optional)
553	p_updt_cb_data:p_updt_cb_data} ; data for callback (optional)
554
555	if (XREGISTERED('XPAL')) then return ; Only one copy at a time
556
557	IF N_ELEMENTS(block) EQ 0 THEN block=0
558
559	on_error,2 ;Return to caller if an error occurs
560
561	nc = !d.table_size ;# of colors avail
562	if nc eq 0 then message, "Device has static color tables. Can't modify."
563	if (nc eq 2) then message, 'Unable to work with monochrome system.'
564
565	state.old_p = !p ;Save !p
566	!p.noclip = 1 ;No clipping
567	!p.color = nc -1 ;Foreground color
568	!p.font = 0 ;Hdw font
569	save_win = !d.window ;Previous window
570
571	IF N_ELEMENTS(r_orig) LE 0 THEN BEGIN ;If no common, use current colors
572	TVLCT, r_orig, g_orig, b_orig, /GET
573	r_curr = r_orig
574	b_curr = b_orig
575	g_curr = g_orig
576	ENDIF
577
578	; Create widgets
579	xpw.base=WIDGET_BASE(title='Xpal', /ROW, space=30)
580	; This is a little tricky. Setting the managed attribute indicates
581	; our intention to put this app under the control of XMANAGER, and
582	; prevents our draw widgets from becoming candidates for becoming
583	; the default window on WSET, -1. XMANAGER sets this, but doing it here
584	; prevents our own WSETs at startup from having that problem.
585	WIDGET_CONTROL, /MANAGED, xpw.base
586
587	version = WIDGET_INFO(/VERSION)
588	if (version.style='Motif') then junk=510 else junk = 580
589	plot_frame = WIDGET_DRAW(xpw.base, xsize=200, ysize=junk)
590
591	c1 = WIDGET_BASE(xpw.base, /COLUMN, space=20)
592	status = WIDGET_BASE(c1, /COLUMN, /FRAME)
593	ncw = WIDGET_LABEL(WIDGET_BASE(status), /DYNAMIC_RESIZE)
594	xpw.idx_label = CW_FIELD(status, title='Current Index: ', value='0', $
595	xsize=20, /STRING)
596	xpw.mark_label = CW_FIELD(status, title='Mark Index: ', value='0', $
597	xsize=20, /STRING)
598	c1_1 = widget_base(status, /ROW)
599	junk = WIDGET_LABEL(c1_1, value="Current Color: ")
600	cur_color = WIDGET_DRAW(c1_1, xsize = 125, ysize=50, /frame)
601	names = [ 'Done', 'Predefined', 'Help', 'Redraw', 'Set Mark', $
602	'Switch Mark', 'Copy Current', 'Interpolate', 'save']
603	xpw.button_base = CW_BGROUP(c1, names, COLUMN=3, /FRAME)
604	xpw.rgb_base = CW_RGBSLIDER(c1, /FRAME, /DRAG)
605
606	junk = WIDGET_BASE(xpw.base) ; Responds to YOFFSET
607	if (version.style='Motif') then junk2=30 else junk2 = 50
608	xpw.colorsel = CW_COLORSEL(junk, yoffset=junk2)
609
610
611	state.cur_idx = 0
612	state.mark_idx = 0
613
614	; Position RGB slider appropriately
615	WIDGET_CONTROL, xpw.rgb_base, SET_VALUE=[r_curr[0], g_curr[0], b_curr[0]]
616	WIDGET_CONTROL, /REALIZE, xpw.base
617
618	WIDGET_CONTROL, ncw, $
619	set_value='Number Of Colors: ' + strcompress(!d.n_colors, /REMOVE_ALL)
620	WIDGET_CONTROL, get_value=tmp, cur_color
621	state.cur_color_win = tmp
622	WIDGET_CONTROL, get_value=tmp, plot_frame
623	state.plot_win = tmp
624
625
626	; Update the plots of RGB
627	junk = XP_NEW_COLORS()
628	XP_REPLOT, !p.color, 'F'
629
630	WSET, save_win
631
632	XMANAGER, 'Xpal', xpw.base, event_handler='XP_EVENT', group=group, $
633	NO_BLOCK=(NOT(FLOAT(block)))
634	end
635

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