summaryrefslogtreecommitdiff
path: root/support/qfig/src/qfigsub2.bas
blob: c967cc4cea00675ae579b27db85a9948cbbc5334 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
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
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
' qfigsub2.bas

'$INCLUDE: 'QFIG.BI'

SUB CL.R.edraw (simple%, show%)
'                                                           clear and redraw
CLS 0
i% = windowx%(wndwfctr%) + pxo%
IF i% > REGIONXMAX THEN i% = REGIONXMAX
LINE (pxo%, pyo%)-(i%, pyo%), 3
i% = windowy%(wndwfctr%) + pyo%
IF i% > REGIONYMAX THEN i% = REGIONYMAX
LINE (pxo%, pyo%)-(pxo%, i%), 3
FOR i% = pxo% TO windowx%(wndwfctr%) + pxo% STEP 4
IF i% > REGIONXMAX THEN EXIT FOR
LINE (i%, pyo%)-(i%, pyo% + 2), 3
IF INT(i% / 20) * 20 = i% THEN LINE -(i%, pyo% + 4), 3
IF INT(i% / 40) * 40 = i% THEN LINE -(i%, pyo% + 6), 3
IF i% <> 0 AND INT(i% / 200) * 200 = i% THEN CIRCLE (i%, pyo% + 6), 3, 3, , , 1
NEXT i%
FOR i% = pyo% TO windowy%(wndwfctr%) + pyo% STEP 4
IF i% > REGIONYMAX THEN EXIT FOR
LINE (pxo%, i%)-(pxo% + 2, i%), 3
IF INT(i% / 20) * 20 = i% THEN LINE -(pxo% + 4, i%), 3
IF INT(i% / 40) * 40 = i% THEN LINE -(pxo% + 6, i%), 3
IF i% <> 0 AND INT(i% / 200) * 200 = i% THEN CIRCLE (pxo% + 6, i%), 3, 3, , , 1
NEXT i%
IF nobj% <> 0 THEN
  IF show% <> 0 THEN
	LOCATE 12, 30: COLOR 10: PRINT msgrdrw$; : COLOR 7
  END IF
  xmin% = REGIONXMAX: xmax% = 0: ymin% = REGIONYMAX: ymax% = 0
  FOR n% = 0 TO nobj% - 1
  SetObject n%, 7, simple%
  NEXT n%
END IF
LINE (PMAP(0, 2), PMAP(windowy%(0) - texth% * 4 - 5, 3))-(PMAP(639, 2), PMAP(windowy%(0), 3)), 0, BF
KeyDisplay
LINE (PMAP(0, 2), PMAP(windowy%(0) - texth% * 4 - 4, 3))-(PMAP(639, 2), PMAP(windowy%(0) - texth% * 4 - 4, 3)), 3
'
END SUB

SUB CopySymm
'                                                             symmetric copy
job% = 11
KeySwitch 0
SetInst job%
wx1% = 17 * 8 - 8
wx2% = 17 * 8 + 40
wy1% = line1% * texth% - texth%
wy2% = line1% * texth%
LINE (PMAP(wx1% - 1, 2), PMAP(wy1%, 3))-(PMAP(wx2%, 2), PMAP(wy2%, 3)), 11, BF
ptext PMAP(wx1%, 2) + 19, PMAP(wy1%, 3) + 1, kky$(13), 0, 1
'
startcopysymm:
selh% = 1
Marking 2, n%
IF n% = 0 THEN Marking 2, n%: GOTO donecopysymm
DO
  CursorMotion keyin%
LOOP UNTIL keyin% <> 1
Marking 2, n%
IF keyin% = 4 THEN GOTO donecopysymm
VIEW SCREEN (0, 0)-(windowx%(0), winpy%)
Marking.Chk 2, sobj%, snode%
IF sobj% < 0 THEN GOTO startcopysymm
FOR i% = 0 TO 6: obj%(nobj%, i%) = obj%(sobj%, i%): NEXT i%
FOR i% = 0 TO obj%(nobj%, 1): xx(nobj%, i%) = xx(sobj%, i%)
yy(nobj%, i%) = yy(sobj%, i%): NEXT i%
SELECT CASE keyin%
  CASE 2
	FOR i% = 0 TO obj%(nobj%, 1)
	  yy(nobj%, i%) = 2! * yy(sobj%, snode%) - yy(nobj%, i%)
	NEXT i%
  CASE 3
	FOR i% = 0 TO obj%(nobj%, 1)
	  xx(nobj%, i%) = 2! * xx(sobj%, snode%) - xx(nobj%, i%)
	NEXT i%
END SELECT
SetObject nobj%, 7, 0
nobj% = nobj% + 1
Object.Max.Check
GOTO startcopysymm
'
donecopysymm:
SetInst job%
KeySwitch 1
job% = 0
VIEW SCREEN (0, 0)-(windowx%(0), windowy%(0))
selh% = 0
LINE (PMAP(wx1% - 1, 2), PMAP(wy1%, 3))-(PMAP(wx2%, 2), PMAP(wy2%, 3)), 0, BF
LOCATE line1%, 17: COLOR 3: PRINT kky$(13); : COLOR 7
'
END SUB

SUB Disp.C (sobj%, snode%)
'                                                                  cut nodes
IF obj%(sobj%, 1) = 1 THEN EXIT SUB
IF fnoo%(sobj%) = 2 AND obj%(sobj%, 1) = 3 THEN EXIT SUB
CursorDisplay px%, py%
FOR i% = 0 TO nobj% - 1
IF fnoo%(i%) = 11 AND obj%(i%, 5) = sobj% AND obj%(i%, 6) = snode% THEN Killer i%, sobj%
NEXT i%
SetObject sobj%, 0, 0
FOR i% = 1 TO 3: obj%(sobj%, i%) = obj%(sobj%, i%) - 1: NEXT i%
IF snode% <> obj%(sobj%, 1) + 1 THEN
  FOR i% = snode% + 1 TO obj%(sobj%, 1) + 1
  xx(sobj%, i% - 1) = xx(sobj%, i%): yy(sobj%, i% - 1) = yy(sobj%, i%)
  NEXT i%
  IF fnoo%(sobj%) = 2 OR fnoo%(sobj%) = 4 THEN
	xx(sobj%, obj%(sobj%, 1)) = xx(sobj%, 0)
	yy(sobj%, obj%(sobj%, 1)) = yy(sobj%, 0)
  END IF
END IF
IF fnoo%(sobj%) = 3 OR fnoo%(sobj%) = 4 THEN
  snode% = obj%(sobj%, 1)
  G.Addnode sobj%, snode%, 0
  ' Next line resets a closed curve which was originally a Poly
  'but has just been edited
  IF fnoo%(sobj%) = 4 AND obj%(sobj%, 6) <> 0 THEN obj%(sobj%, 6) = 0
END IF
FOR i% = 0 TO nobj% - 1
IF fnoo%(i%) = 11 AND obj%(i%, 5) = sobj% THEN
  SetObject i%, 0, 0
  snode% = 0
  IF obj%(i%, 6) <> 0 THEN snode% = obj%(sobj%, 1): obj%(i%, 6) = snode%
  G.ArrowDirec sobj%, snode%, i%
  SetObject i%, 7, 0
END IF
NEXT i%
SetObject sobj%, 7, 0
CursorDisplay px%, py%
'
END SUB

SUB Disp.D (sobj%, snode%)
'                                                             displace nodes
pxold% = px%: pyold% = py%
DO
  CursorMotion keyin%
  CursorDisplay px%, py%
  IF snode% = obj%(sobj%, 1) THEN
	LINE (pxold%, pyold%)-(xx(sobj%, snode% - 1), yy(sobj%, snode% - 1)), 0
  ELSE
	LINE (pxold%, pyold%)-(xx(sobj%, snode% + 1), yy(sobj%, snode% + 1)), 0
	IF snode% <> 0 THEN
	  LINE (pxold%, pyold%)-(xx(sobj%, snode% - 1), yy(sobj%, snode% - 1)), 0
	ELSEIF fnoo%(sobj%) = 2 OR fnoo%(sobj%) = 4 THEN
	  LINE (pxold%, pyold%)-(xx(sobj%, obj%(sobj%, 1) - 1), yy(sobj%, obj%(sobj%, 1) - 1)), 0
	END IF
  END IF
  IF keyin% = 4 THEN GOTO donedisp
  ' Next line resets a closed curve which was originally a Poly
  'but has just been edited
  IF fnoo%(sobj%) = 4 AND obj%(sobj%, 6) <> 0 THEN obj%(sobj%, 6) = 0
  IF snode% = obj%(sobj%, 1) THEN
	LINE (px%, py%)-(xx(sobj%, snode% - 1), yy(sobj%, snode% - 1)), 2
  ELSE
	LINE (px%, py%)-(xx(sobj%, snode% + 1), yy(sobj%, snode% + 1)), 2
	IF snode% <> 0 THEN
	  LINE (px%, py%)-(xx(sobj%, snode% - 1), yy(sobj%, snode% - 1)), 2
	ELSEIF fnoo%(sobj%) = 2 OR fnoo%(sobj%) = 4 THEN
	  LINE (px%, py%)-(xx(sobj%, obj%(sobj%, 1) - 1), yy(sobj%, obj%(sobj%, 1) - 1)), 2
	END IF
  END IF
  CursorDisplay px%, py%
  pxold% = px%: pyold% = py%
LOOP UNTIL keyin% = 2
CursorDisplay px%, py%
IF snode% = obj%(sobj%, 1) THEN
  LINE (pxold%, pyold%)-(xx(sobj%, snode% - 1), yy(sobj%, snode% - 1)), 0
ELSE
  LINE (pxold%, pyold%)-(xx(sobj%, snode% + 1), yy(sobj%, snode% + 1)), 0
  IF snode% <> 0 THEN
	LINE (pxold%, pyold%)-(xx(sobj%, snode% - 1), yy(sobj%, snode% - 1)), 0
  ELSEIF fnoo%(sobj%) = 2 OR fnoo%(sobj%) = 4 THEN
	LINE (pxold%, pyold%)-(xx(sobj%, obj%(sobj%, 1) - 1), yy(sobj%, obj%(sobj%, 1) - 1)), 0
  END IF
END IF
SetObject sobj%, 0, 0
xx(sobj%, snode%) = px%: yy(sobj%, snode%) = py%
IF (fnoo%(sobj%) = 2 OR fnoo%(sobj%) = 4) AND snode% = 0 THEN
  xx(sobj%, obj%(sobj%, 1)) = px%: yy(sobj%, obj%(sobj%, 1)) = py%
END IF
'                                                                     arrows
FOR i% = 0 TO nobj% - 1
IF fnoo%(i%) <> 11 THEN GOTO chkdisp
IF obj%(i%, 5) <> sobj% THEN GOTO chkdisp
SetObject i%, 0, 0
G.ArrowDirec sobj%, obj%(i%, 6), i%
SetObject i%, 7, 0
chkdisp: NEXT i%
'
donedisp:
SetObject sobj%, 7, 0
CursorDisplay px%, py%
'
END SUB

SUB DispCut
'                                                         displace/cut nodes
job% = 9
CursorDisplay px%, py%
FOR i% = 0 TO 92: SWAP curs%(i%), curs2%(i%): NEXT i%
CursorDisplay px%, py%
KeySwitch 0
SetInst job%
wx1% = 47 * 8 - 8
wx2% = 47 * 8 + 40
wy1% = line1% * texth% - texth%
wy2% = line1% * texth%
LINE (PMAP(wx1% - 1, 2), PMAP(wy1%, 3))-(PMAP(wx2%, 2), PMAP(wy2%, 3)), 11, BF
ptext PMAP(wx1%, 2) + 19, PMAP(wy1%, 3) + 1, kky$(16), 0, 1
'
startdispcut:
Marking 2, n%
IF n% = 0 THEN Marking 2, n%: GOTO donedispcut
selh% = 1
DO
  CursorMotion keyin%
LOOP UNTIL keyin% <> 1
Marking 2, n%
IF keyin% = 4 THEN GOTO donedispcut
VIEW SCREEN (0, 0)-(windowx%(0), winpy%)
selh% = 0
Marking.Chk 2, sobj%, snode%
IF sobj% < 0 THEN GOTO startdispcut
SELECT CASE keyin%
  CASE 2
	Disp.D sobj%, snode%
  CASE 3
	Disp.C sobj%, snode%
END SELECT
GOTO startdispcut
'
donedispcut:
SetInst job%
KeySwitch 1
CursorDisplay px%, py%
FOR i% = 0 TO 92: SWAP curs%(i%), curs2%(i%): NEXT i%
CursorDisplay px%, py%
job% = 0
selh% = 0
VIEW SCREEN (0, 0)-(windowx%(0), windowy%(0))
LINE (PMAP(wx1% - 1, 2), PMAP(wy1%, 3))-(PMAP(wx2%, 2), PMAP(wy2%, 3)), 0, BF
LOCATE line1%, 47: COLOR 3: PRINT kky$(16); : COLOR 7
'
END SUB

SUB EditObject
'                                                            edit one object
job% = 8
KeySwitch 0
SetInst job%
wx1% = 31 * 8 - 8
wx2% = 31 * 8 + 40
wy1% = line1% * texth% - texth%
wy2% = line1% * texth%
LINE (PMAP(wx1% - 1, 2), PMAP(wy1%, 3))-(PMAP(wx2%, 2), PMAP(wy2%, 3)), 11, BF
ptext PMAP(wx1%, 2) + 19, PMAP(wy1%, 3) + 1, kky$(15), 0, 1
'
Marking 1, n%
startediting:
IF n% = 0 THEN Marking 1, n%: GOTO donediting
selh% = 1
startediting2:
DO
  CursorMotion keyin%
  IF keyin% = 4 THEN Marking 1, n%: GOTO donediting
LOOP UNTIL keyin% = 2 OR keyin% = 3
Marking.Chk 1, sobj%, snode%
IF sobj% < 0 THEN
   IF keyin% = 3 THEN
     G.Group1 1  '1 means change thickness
   END IF
  GOSUB donediting
END IF
VIEW SCREEN (0, 0)-(windowx%(0), winpy%)
Marking.One 1, sobj%
FOR i% = 0 TO 6: obj%(nobj%, i%) = obj%(sobj%, i%): NEXT i%
FOR i% = 0 TO obj%(nobj%, 1): xx(nobj%, i%) = xx(sobj%, i%)
yy(nobj%, i%) = yy(sobj%, i%): NEXT i%
CursorDisplay px%, py%
SetObject sobj%, 0, 0
CursorDisplay px%, py%
selh% = 0
ON fnoo%(sobj%) GOSUB edline, edline, edline, edline, edcrcl, edarc, edellps, edbox, edbox, edstring, edarrw
CursorDisplay px%, py%
SetObject sobj%, 7, 0
CursorDisplay px%, py%
Marking.One 1, sobj%
GOTO startediting
'
edline:
obj%(sobj%, 4) = thick%: obj%(sobj%, 5) = ltype%
IF keyin% = 3 AND fnoo%(sobj%) >= 2 THEN GOTO regularshape
obj%(sobj%, 0) = obj%(sobj%, 0) + 4 - 2 * fnoo%(sobj%)
IF fnoo%(sobj%) = 0 OR fnoo%(sobj%) = 2 THEN obj%(sobj%, 0) = obj%(sobj%, 0) + 2

'**** added for converting poly to original shape ****
IF (fnoo%(sobj%) = 1 OR fnoo%(sobj%) = 2) AND obj%(sobj%, 6) <> 0 THEN
  FOR itemp% = obj%(sobj%, 6) TO (obj%(sobj%, 1) - 1)
    xx(sobj%, itemp%) = xx(sobj%, itemp% + 1)
    yy(sobj%, itemp%) = yy(sobj%, itemp% + 1)
  NEXT itemp%
  obj%(sobj%, 6) = 0
  FOR itemp% = 1 TO 3: obj%(sobj%, itemp%) = obj%(sobj%, itemp%) - 1: NEXT itemp%
END IF
'****************************
IF fnoo%(sobj%) > 2 AND INT(obj%(sobj%, 1) / 2) * 2 <> obj%(sobj%, 1) THEN
  G.Addnode sobj%, obj%(sobj%, 1), 1
  FOR i% = 0 TO nobj% - 1
	IF fnoo%(i%) = 11 AND obj%(i%, 5) = sobj% AND obj%(i%, 6) <> 0 THEN obj%(i%, 6) = obj%(i%, 6) + 1
  NEXT i%
END IF
GOSUB OKarrow: RETURN
'                                          keyin%=3 and closed line or curve
regularshape:
x0 = 0!: y0 = 0!
FOR i% = 0 TO obj%(sobj%, 2): x0 = x0 + xx(sobj%, i%): y0 = y0 + yy(sobj%, i%)
NEXT i%: x0 = x0 / (obj%(sobj%, 2) + 1): y0 = y0 / (obj%(sobj%, 2) + 1)
IF fnoo%(sobj%) <> 3 THEN
  x2 = 2! * pi / obj%(sobj%, 1)
ELSE
  x3 = x0: y3 = y0
  x0 = (xx(sobj%, 0) + xx(sobj%, obj%(sobj%, 1))) / 2!
  y0 = (yy(sobj%, 0) + yy(sobj%, obj%(sobj%, 1))) / 2!
  x4 = xx(sobj%, 0) - xx(sobj%, obj%(sobj%, 1))
  y4 = yy(sobj%, 0) - yy(sobj%, obj%(sobj%, 1))
  x3 = x3 - x0: y3 = y3 - y0
  x2 = pi / obj%(sobj%, 1)
  IF x4 * y3 - y4 * x3 > 0 THEN x2 = -x2
END IF
SELECT CASE fnoo%(sobj%)
CASE IS = 2
  rad = SQR((xx(sobj%, snode%) - x0) ^ 2 + (yy(sobj%, snode%) - y0) ^ 2)
  s1 = Angle(x0, y0, xx(sobj%, snode%), yy(sobj%, snode%))
  xx(sobj%, 0) = xx(sobj%, snode%): yy(sobj%, 0) = yy(sobj%, snode%)
  xx(sobj%, obj%(sobj%, 1)) = xx(sobj%, snode%)
  yy(sobj%, obj%(sobj%, 1)) = yy(sobj%, snode%)
  FOR i% = 1 TO obj%(sobj%, 2)
  xx(sobj%, i%) = x0 + rad * COS(s1 + x2 * i%)
  yy(sobj%, i%) = y0 - rad * SIN(s1 + x2 * i%)
  NEXT i%
CASE IS >= 3
  r1 = -10000!: r3 = 10000!
  FOR i% = 0 TO obj%(sobj%, 2)
  rad = SQR((xx(sobj%, i%) - x0) ^ 2 + (yy(sobj%, i%) - y0) ^ 2)
  IF rad > r1 THEN r1 = rad: s1 = Angle(x0, y0, xx(sobj%, i%), yy(sobj%, i%))
  IF rad < r3 THEN r3 = rad
  NEXT i%
  IF fnoo%(sobj%) = 4 THEN
	s1 = s1 + pi / 2!
  ELSE
	x1 = x4 * COS(s1) - y4 * SIN(s1): y1 = x4 * SIN(s1) + y4 * COS(s1)
	x3 = SGN(y1) * SQR(ABS(4! * r1 * r1 - x1 * x1))
	IF x1 > 0! THEN
	  s2 = -ATN(x3 / x1)
	ELSEIF x1 < 0! THEN
	  s2 = -ATN(x3 / x1) - pi
	ELSE
	  s2 = -SGN(x3) * pi / 2!
	END IF
	x3 = SIN(s2): IF x3 <> 0! THEN y3 = -y1 / 2! / x3: IF y3 > 1! THEN r3 = y3
  END IF
  FOR i% = 0 TO obj%(sobj%, 2)
  IF fnoo%(sobj%) = 3 THEN
	x3 = r1 * COS(i% * x2 + s2): y3 = -r3 * SIN(i% * x2 + s2)
  ELSE
	x3 = r3 * COS(i% * x2): y3 = -r1 * SIN(i% * x2)
  END IF
  xx(sobj%, i%) = x0 + x3 * COS(s1) + y3 * SIN(s1)
  yy(sobj%, i%) = y0 - x3 * SIN(s1) + y3 * COS(s1)
  NEXT i%
  IF fnoo%(sobj%) = 4 THEN
	xx(sobj%, obj%(sobj%, 1)) = xx(sobj%, 0)
	yy(sobj%, obj%(sobj%, 1)) = yy(sobj%, 0)
  END IF
END SELECT
RETURN
'
edcrcl:
IF xx(nobj%, 1) > pxmax% OR xx(nobj%, 1) < pxmin% OR yy(nobj%, 1) > pymax2% OR yy(nobj%, 1) < pymin% THEN
   RETURN
END IF
obj%(nobj%, 4) = thick%
CursorDisplay px%, py%
px% = xx(nobj%, 1): py% = yy(nobj%, 1)
SetObject nobj%, 7, 0
CursorDisplay px%, py%
DO
  CursorMotion keyin%
  CursorDisplay px%, py%
     SetObject nobj%, 0, 0
  IF keyin% = 4 THEN
     CursorDisplay px%, py%: GOTO edcrcldone
  END IF
  xx(nobj%, 1) = px%: yy(nobj%, 1) = py%
  xx(nobj%, 2) = SQR((px% - xx(nobj%, 0)) ^ 2 + (py% - yy(nobj%, 0)) ^ 2)
  SetObject nobj%, 7, 0
  CursorDisplay px%, py%
LOOP UNTIL keyin% = 2
GOSUB editok
edcrcldone:
RETURN
'
edarc:
obj%(nobj%, 4) = thick%
CursorDisplay px%, py%
SetObject nobj%, 7, 0
px% = xx(nobj%, snode%): py% = yy(nobj%, snode%)
CursorDisplay px%, py%
pxold% = px%: pyold% = py%
DO
  CursorMotion keyin%
  CursorDisplay px%, py%
  SetObject nobj%, 0, 0
  IF keyin% = 4 THEN CursorDisplay px%, py%: GOTO edarcdone
  x0 = xx(nobj%, 1): y0 = yy(nobj%, 1): rad = xx(nobj%, 3)
  x3 = xx(nobj%, 2): y3 = yy(nobj%, 2)
  r1 = yy(nobj%, 3): r3 = yy(nobj%, 4)
  x1 = xx(nobj%, 0): y1 = yy(nobj%, 0)
  IF snode% = 1 THEN
	cx = (x1 + x3) / 2!: cy = (y1 + y3) / 2!
	IF x1 = x3 THEN
	  y0 = cy: x0 = px%
	ELSEIF y1 = y3 THEN
	  x0 = cx: y0 = py%
	ELSE
	  dx = x3 - x1: dy = y3 - y1
	  x0 = (dx * cx / dy + dy * px% / dx - py% + cy) / (dx / dy + dy / dx)
	  y0 = py% + dy * (x0 - px%) / dx
	END IF
	xx(nobj%, 3) = SQR((x0 - x1) ^ 2 + (y0 - y1) ^ 2)
	yy(nobj%, 3) = Angle(x0, y0, xx(nobj%, 0), yy(nobj%, 0))
	yy(nobj%, 4) = Angle(x0, y0, xx(nobj%, 2), yy(nobj%, 2))
	xx(nobj%, 1) = x0: yy(nobj%, 1) = y0
	px% = INT(x0): py% = INT(y0)
  ELSE
	IF snode% = 0 THEN x1 = px%: y1 = py% ELSE x3 = px%: y3 = py%
	x4 = SQR((x1 - x3) ^ 2 + (y1 - y3) ^ 2) / 2!
	IF x4 > rad THEN
	  px% = pxold%: py% = pyold%
	ELSE
	  y4 = SQR(rad * rad - x4 * x4)
	  s2 = Angle(0!, 0!, y4, -x4)
	  IF (r3 > r1 AND r3 - r1 > pi) OR (r3 < r1 AND r3 - r1 > -pi) THEN s2 = pi - s2
	  s2 = 2! * s2
	  x4 = x3 - x1 * COS(s2) - y1 * SIN(s2)
	  y4 = y3 - y1 * COS(s2) + x1 * SIN(s2)
	  xx(nobj%, 1) = ((1! - COS(s2)) * x4 + SIN(s2) * y4) / 2! / (1! - COS(s2))
	  yy(nobj%, 1) = ((1! - COS(s2)) * y4 - SIN(s2) * x4) / 2! / (1! - COS(s2))
	  xx(nobj%, snode%) = px%: yy(nobj%, snode%) = py%
	  yy(nobj%, 3) = Angle(xx(nobj%, 1), yy(nobj%, 1), x1, y1)
	  yy(nobj%, 4) = Angle(xx(nobj%, 1), yy(nobj%, 1), x3, y3)
	  pxold% = px%: pyold% = py%
	END IF
  END IF
  SetObject nobj%, 7, 0
  px% = INT(CSNG(px%) / CSNG(s%)) * s%: py% = INT(CSNG(py%) / CSNG(s%)) * s%
  CursorDisplay px%, py%
LOOP UNTIL keyin% = 2
xx(nobj%, 0) = xx(nobj%, 1) + xx(nobj%, 3) * COS(yy(nobj%, 3))
yy(nobj%, 0) = yy(nobj%, 1) - xx(nobj%, 3) * SIN(yy(nobj%, 3))
xx(nobj%, 2) = xx(nobj%, 1) + xx(nobj%, 3) * COS(yy(nobj%, 4))
yy(nobj%, 2) = yy(nobj%, 1) - xx(nobj%, 3) * SIN(yy(nobj%, 4))
GOSUB editok
edarcdone:
GOSUB OKarrow
RETURN
'
edellps:
IF xx(nobj%, 1) > pxmax% OR xx(nobj%, 1) < pxmin% OR yy(nobj%, 1) > pymax2% OR yy(nobj%, 1) < pymin% THEN
   RETURN
END IF
obj%(nobj%, 4) = thick%
CursorDisplay px%, py%
px% = xx(nobj%, 0): py% = yy(nobj%, 0)
IF yy(nobj%, 2) > 1 THEN
  px% = px% + xx(nobj%, 2) / yy(nobj%, 2)
  py% = py% - xx(nobj%, 2)
ELSE
  px% = px% + xx(nobj%, 2)
  py% = py% - xx(nobj%, 2) * yy(nobj%, 2)
END IF
SetObject nobj%, 7, 0
CursorDisplay px%, py%
DO
  CursorMotion keyin%
  CursorDisplay px%, py%
  SetObject nobj%, 0, 0
  IF keyin% = 4 THEN CursorDisplay px%, py%: GOTO edellpsdone
  rad = ABS(px% - xx(nobj%, 0)): rt = ABS(py% - yy(nobj%, 0))
  IF rad > rt THEN
	rt = rt / rad
  ELSE
	IF rad <> 0 THEN SWAP rad, rt: rt = rad / rt
  END IF
  xx(nobj%, 2) = rad: yy(nobj%, 2) = rt
  SetObject nobj%, 7, 0
  CursorDisplay px%, py%
LOOP UNTIL keyin% = 2
xx(nobj%, 1) = xx(nobj%, 0): yy(nobj%, 1) = yy(nobj%, 0)
IF rt < 1! THEN
  xx(nobj%, 1) = xx(nobj%, 1) + rad
ELSE
  yy(nobj%, 1) = yy(nobj%, 1) - rad
END IF
GOSUB editok
edellpsdone:
RETURN
'
edbox:
fillnow% = fill%
obj%(nobj%, 4) = thick%: obj%(nobj%, 5) = ltype%
fill% = obj%(nobj%, 6)
CursorDisplay px%, py%
SetObject nobj%, 7, 0
CursorDisplay px%, py%
inbox% = 2
DO
  CursorMotion keyin%
  CursorDisplay px%, py%
  wkill% = 1
  SetObject nobj%, 0, 0
  IF keyin% = 4 THEN CursorDisplay px%, py%: GOTO edboxdone
  obj%(nobj%, 6) = fill%
  IF fill% <> 0 THEN
	obj%(nobj%, 0) = obj%(nobj%, 0) - fnoo%(nobj%) + 9: obj%(nobj%, 5) = 0
  ELSE
	obj%(nobj%, 0) = obj%(nobj%, 0) - fnoo%(nobj%) + 8
  END IF
  xx(nobj%, snode%) = px%: yy(nobj%, snode%) = py%
  SetObject nobj%, 7, 0
  CursorDisplay px%, py%
LOOP UNTIL keyin% = 2
inbox% = 0
'****add here for edit boxtext (NOT COMPLETE OR FUNCTIONAL!)
 FOR ibt% = 0 TO nobj% - 1
  IF obj%(ibt%, 0) = 10 THEN
   IF (obj%(ibt%, 6) = (sobj% + 1)) THEN
     tempx0% = xx(nobj%, 0)
     tempx1% = xx(nobj%, 1)
     tempy0% = yy(nobj%, 0)
     tempy1% = yy(nobj%, 1)
     'recalculate coordinates for boxtext
      SetObject ibt%, 0, 0
     '------------
     xx(ibt%, 0) = tempx1% - ((tempx1% - tempx0%) / 2)
     yy(ibt%, 0) = tempy1% - ((tempy1% - tempy0%) / 2) - texth% + 4
    '------------
     '
      SetObject ibt%, 7, 0
     EXIT FOR
   END IF
  END IF
 NEXT ibt%
' **** End Edit Boxtext ****
GOSUB editok
edboxdone:
fill% = fillnow%
RETURN
'
edstring:
chartypeold% = chartype%: charptold% = charpt%
chartype% = obj%(nobj%, 5): charpt% = obj%(nobj%, 4)
edstring1:
CursorDisplay px%, py%
SetObject nobj%, 7, 0
pxold% = px%: pyold% = py%
LINE (px%, py%)-(px% + epitch%(chartype%, 0) * charpt% / 250 * ptmm, py% + eheight(chartype%) * charpt% * ptmm / .25), 2, B
CursorDisplay px%, py%
CursorDisplay px%, py%
LINE (pxold%, pyold%)-(pxold% + epitch%(chartype%, 0) * charpt% / 250 * ptmm, pyold% + eheight(chartype%) * charpt% * ptmm / .25), 0, B
CursorDisplay px%, py%
ams$ = ""
FOR i% = 1 TO obj%(nobj%, 1)
IF SGN(yy(nobj%, i%)) = 0 THEN
  ams$ = ams$ + CHR$(xx(nobj%, i%))
ELSE
  ams$ = ams$ + STRING$(1, VAL("&j" + HEX$(yy(nobj%, i%)) + HEX$(xx(nobj%, i%))))
END IF
NEXT i%
L.Text px%, py%: PRINT "-> "; : Chr.Input ams$
L.Text px%, py%: PRINT SPACE$(LEN(ams$) + 3);
CursorDisplay px%, py%
SetObject nobj%, 0, 0
CursorDisplay px%, py%
obj%(nobj%, 4) = charpt%: obj%(nobj%, 5) = chartype%
IF ams$ <> "" THEN
  obj%(nobj%, 1) = LEN(ams$)
  G.Charset ams$, nobj%
END IF
j% = 0: FOR i% = 1 TO obj%(nobj%, 1): j% = j% + yy(nobj%, i%): NEXT i%
IF j% <> 0 AND chartype% > 1 THEN obj%(nobj%, 5) = obj%(nobj%, 5) - 2
GOSUB editok
edstringdone:
chartype% = chartypeold%: charpt% = charptold%
RETURN
'
edarrw: RETURN                                          ' no edit for arrows
'
OKarrow:
FOR i% = 0 TO nobj% - 1
IF fnoo%(i%) = 11 AND obj%(i%, 5) = sobj% THEN
  CursorDisplay px%, py%
  SetObject i%, 0, 0
  obj%(i%, 4) = obj%(sobj%, 4)
  G.ArrowDirec sobj%, obj%(i%, 6), i%
  SetObject i%, 7, 0
  CursorDisplay px%, py%
END IF
NEXT i%
RETURN
'
editok:
FOR i% = 0 TO 6: obj%(sobj%, i%) = obj%(nobj%, i%): NEXT i%
FOR i% = 0 TO obj%(sobj%, 1): xx(sobj%, i%) = xx(nobj%, i%)
yy(sobj%, i%) = yy(nobj%, i%): NEXT i%
RETURN
'
donediting:
SetInst job%
KeySwitch 1
job% = 0
selh% = 0
VIEW SCREEN (0, 0)-(windowx%(0), windowy%(0))
LINE (PMAP(wx1% - 1, 2), PMAP(wy1%, 3))-(PMAP(wx2%, 2), PMAP(wy2%, 3)), 0, BF
LOCATE line1%, 31: COLOR 3: PRINT kky$(15); : COLOR 7
CL.R.edraw 0, 0
'
END SUB

SUB G.Group
'                                                get several objects grouped
job% = 13
KeySwitch 0
LOCATE 2, 2: COLOR 11: PRINT "Setting Group No. "; group%; : COLOR 7
SetInst job%
'
Marking 1, n%
IF n% = 0 THEN Marking 1, n%: GOTO donegrouping
c% = 0
DO
  CursorMotion keyin%
  SELECT CASE keyin%
	CASE 4
	  ggroup% = 100 * group%
	  FOR i% = 0 TO nobj% - 1
		IF obj%(i%, 0) <> fnoo%(i%) THEN
		  IF obj%(i%, 0) - fnoo%(i%) = ggroup% THEN
			Marking.One 1, i%
			obj%(i%, 0) = fnoo%(i%)
			Marking.One 1, i%
		  END IF
		END IF
	  NEXT i%
	  GOTO donegrouping
	CASE 2 TO 3
	  Marking.Chk 1, sobj%, snode%
	  IF sobj% >= 0 THEN
		Marking.One 1, sobj%
		IF fnoo%(sobj%) <> obj%(sobj%, 0) THEN
		  ggroup% = obj%(sobj%, 0) - fnoo%(sobj%)
		  IF ggroup% = 100 * group% THEN c% = 0
		  obj%(sobj%, 0) = fnoo%(sobj%)
		  FOR i% = 0 TO nobj% - 1
			IF obj%(i%, 0) <> fnoo%(i%) THEN
			  IF obj%(i%, 0) - fnoo%(i%) = ggroup% THEN
				Marking.One 1, i%
				obj%(i%, 0) = fnoo%(i%)
				Marking.One 1, i%
			  END IF
			END IF
		  NEXT i%
		ELSE
		  obj%(sobj%, 0) = 100 * group% + obj%(sobj%, 0)
		  c% = c% + 1
		END IF
		Marking.One 1, sobj%
	  END IF
  END SELECT
LOOP UNTIL keyin% = 3
IF c% <> 0 THEN group% = group% + 1
'
donegrouping:
Marking 1, n%
SetInst job%
LOCATE 2, 2: COLOR 0: PRINT SPACE$(25); : COLOR 7
KeySwitch 1
job% = 0
'
END SUB

SUB Help.Me
'                                                              help messages
KEY(17) OFF: KEY(19) OFF
SCREEN scrtype%
VIEW PRINT 1 TO line3%
CLS 0
SCREEN scrtype%
COLOR 7
ON job% + 1 GOSUB h.0, h.1, h.2, h.3, h.4, h.5, h.6, h.7, h.8, h.9, h.10, h.11, h.12
VIEW PRINT 1 TO line1%
SCREEN scrtype%
IF seljob% <> 0 THEN VIEW SCREEN (0, 0)-(windowx%(0), windowy%(0))
CL.R.edraw 0, 0
IF seljob% <> 0 AND py% > pymax2% THEN py% = pymax2%
CursorDisplay px%, py%
KeyDisplay
SetInst 0
SELECT CASE seljob%
	CASE 0
	   linesel% = 0
	CASE 1 TO 5
	   wx1% = (seljob% * 7 - 4) * 8 - 8
	   wx2% = (seljob% * 7 - 4) * 8 + 40
	   wy1% = (line2% + linesel%) * texth% - texth%
	   wy2% = (line2% + linesel%) * texth%
	CASE 6 TO 9
	   wx1% = (5 + seljob% * 7) * 8 - 8
	   wx2% = (5 + seljob% * 7) * 8 + 40
	   wy1% = (line2% + linesel%) * texth% - texth%
	   wy2% = (line2% + linesel%) * texth%
END SELECT
COLOR 11
IF seljob% <> 0 THEN
	 LINE (PMAP(wx1%, 2), PMAP(wy1%, 3))-(PMAP(wx2%, 2), PMAP(wy2%, 3)), 11, BF
	 ptext PMAP(wx1%, 2) + 19, PMAP(wy1%, 3) + 1, kky$(seljob% + linesel% * 10), 0, 1
	COLOR 7
	VIEW SCREEN (0, 0)-(windowx%(0), winpy%)
END IF
IF selh% = 1 THEN Marking 1, n%
KEY(17) ON: KEY(19) ON
help% = 1
EXIT SUB
'
h.0:
KeySwitch 0
PRINT
PRINT
PRINT TAB(3); " FUNCTION KEY (A) ==> [ESC] ==> (B) ==> [ESC] ==> (C) ==> [ESC] ==> (A)"

PRINT TAB(11); "(A)"; TAB(35); "(B)"; TAB(60); "(C)";
PRINT TAB(1); " f.1: Straight Lines"; TAB(28); "to Move objects"; TAB(54); "to change Box Fill Pattern"
PRINT TAB(1); " f.2: Curves"; TAB(28); "to Copy objects"; TAB(54); "to change font type"
PRINT TAB(1); " f.3: Circles & Ellipses"; TAB(28); "to Copy symmetrically"; TAB(54); "to change font size"
PRINT TAB(1); " f.4: Arcs"; TAB(28); "to Rotate objects"; TAB(54); "to Zoom"
PRINT TAB(1); " f.5: Boxes w/wo filler"; TAB(28); "to Edit objects"; TAB(54); "to Hide/Show Text"
PRINT TAB(1); " f.6: Polygons"; TAB(28); "to Cut or Move nodes"; TAB(54); "to Redraw screen"
PRINT TAB(1); " f.7: Closed curves"; TAB(28); "to Kill objects"; TAB(54); "to Reset (clear) drawing"
PRINT TAB(1); " f.8: Arrows"; TAB(28); "to change line Pattern"
PRINT TAB(1); " f.9: Strings"; TAB(28); "to change line Thickness"
PRINT TAB(1); "f.10: File operations"; TAB(28); "to change cursor pitch"
PRINT
PRINT TAB(2); "SPACE/RETURN/DEL ==> to set each choice";
PRINT TAB(45); "ARROWS ==> to move the cursor";
PRINT TAB(2); "PGUP/PGDN ==> Page-up/Page-down";
PRINT TAB(45); "CTRL+w ==> Widen window (Zoom)"
PRINT TAB(45); "CTRL+s ==> Reset all the objects";
PRINT TAB(45); "CTRL+r ==> Redraw all the objects"
PRINT TAB(2); "CTRL+q ==> Quit Program";
PRINT TAB(45); "CTRL+h ==> Context sensitive help"
PRINT TAB(2); "CTRL+LEFT/RIGHT ARROWS ==> Shift Region Right/Left"
PRINT TAB(2); "CTRL+T ==> Hide/Show text toggle"
GOSUB help.hit
KeySwitch 1
seljob% = 0
RETURN
'
h.1:
PRINT
PRINT TAB(5); " Lines(f.1)/ Curves(f.2)/ Polygons(f.6)/ Closed Curves(f.7)"
PRINT
PRINT TAB(5); "   SPACE  = to set intermediate points"
PRINT TAB(5); "   RETURN = to set the last point"
PRINT TAB(5); "   DEL    = to cancel drawing"
PRINT
PRINT TAB(5); "   f.8/f.9       = to change Line Type/Thickness"

wnode% = 1
GOSUB help.hit
RETURN
'
h.2:
PRINT
PRINT TAB(5); " Circles/ Ellipses(f.3)"
PRINT
PRINT TAB(5); "   SPACE  => Circles   ---  to set center and radius"
PRINT TAB(5); "   RETURN => Ellipses  ---  to set diagonal points"
PRINT TAB(5); "   DEL    = to cancel drawing"
PRINT
PRINT TAB(5); "   f.8/f.9       = to change Line Type/Thickness"
GOSUB help.hit
RETURN
'
h.3:
PRINT
PRINT TAB(5); " Arcs(f.4)"
PRINT
PRINT TAB(5); "   SPACE  = to set two end points"
PRINT TAB(5); "   RETURN = to set the last point on the arc"
PRINT TAB(5); "   DEL    = to cancel drawing"
PRINT
PRINT TAB(5); "   f.8/f.9       = to change Line Type/Thickness"
GOSUB help.hit
RETURN
'
h.4:
PRINT
PRINT TAB(5); " Boxes with or without filler(f.5)"
PRINT
PRINT TAB(5); "   SPACE/RETURN  = to set diagonal points"
PRINT TAB(5); "   DEL           = to cancel drawing"
PRINT
PRINT TAB(5); "After drawing box you will be asked if you"
PRINT TAB(5); "want to add centered text to the box   "
PRINT
PRINT TAB(5); "   f.1           = to change filler pattern"
PRINT TAB(5); "   f.8/f.9       = to change Line Type/Thickness"


GOSUB help.hit
RETURN
'
h.5:
PRINT
PRINT TAB(5); " Strings(f.9)"
PRINT
PRINT TAB(5); "      SPACE/RETURN  = to start the string (ended by RETURN)"
PRINT TAB(5); "          DEL       = to cancel "
PRINT
PRINT TAB(5); "      Use f.1 & f.2 to change size and font"
GOSUB help.hit
RETURN
'
h.6:
PRINT
PRINT TAB(5); " Arrows on Lines/ Curves/ Arcs(f.8)"
PRINT
PRINT TAB(5); "   SPACE  = to set/reset one arrow at that end"
PRINT TAB(5); "   RETURN = to set/reset arrows at both ends"
PRINT TAB(5); "   DEL    = to cancel drawing"
GOSUB help.hit
RETURN
'
h.7:
PRINT
PRINT TAB(5); " Move or Copy objects(f.1)(f.2)"
PRINT
PRINT TAB(5); "   SPACE  = to move/copy individual object"
PRINT TAB(5); "   RETURN = to set region to be moved/copied"
PRINT TAB(5); "   DEL    = to cancel operation"
GOSUB help.hit
RETURN
'
h.8:
PRINT
PRINT TAB(5); " Edit objects(f.5)  --  Line thickness and pattern are updated"
PRINT
PRINT TAB(5); "   SPACE/RETURN = to select object/area respectively"
PRINT TAB(5); "   DEL             = to cancel operation"
PRINT : PRINT
PRINT TAB(5); "    Lines, Polygons  <== (SPACE)  ==>     Curves,  Closed Curves"
PRINT TAB(5); "     Polygons, Curves == (RETURN) ==> Regular Polygons, Ellipses"
PRINT TAB(5); "    Circles and Ellipses (SPACE)   :        radii can be changed"
PRINT TAB(5); "    Arcs       (SPACE) : end positions and radius can be changed"
PRINT TAB(5); "    Boxes      (SPACE) :                     size can be changed"
PRINT TAB(5); "              (RETURN) :           filler pattern can be changed"
PRINT TAB(5); "    Strings   (RETURN) :                          To end editing"
PRINT
PRINT TAB(5); "NOTE: To change string(s) font/size select it in area to edit"
COLOR 14
PRINT
PRINT TAB(5); "NOTE: To Move or Cut nodes of Lines/ Curves/ Polygons/ Closed Curves"
PRINT TAB(5); "      Use DspCut(f.6)"
COLOR 7

GOSUB help.hit
RETURN
'
h.9:
PRINT
PRINT TAB(5); " Move or Cut nodes of Lines/ Curves/ Polygons/ Closed Curves(f.6)"
PRINT
PRINT TAB(5); "   SPACE  = to move the node"
PRINT TAB(5); "   RETURN = to cut the node"
PRINT TAB(5); "   DEL    = to cancel operation"
GOSUB help.hit
RETURN
'
h.10:
PRINT
PRINT TAB(5); " Kill objects(f.7)"
PRINT
PRINT TAB(5); "   SPACE/RETURN  = to select the object/area respectively"
PRINT TAB(5); "   y = to confirm this choice"
PRINT TAB(5); "   n = to cancel operation"
GOSUB help.hit
RETURN
'
h.11:
PRINT
PRINT TAB(5); " Symmetric copy of Lines/ Curves/ Polygons/ Closed Curves(f.3)"
PRINT
PRINT TAB(5); "   SPACE  = to copy symmetrically with respect to the horizontal axis"
PRINT TAB(5); "   RETURN = to copy symmetrically with respect to the vertical axis"
PRINT TAB(5); "   DEL    = to cancel operation"
GOSUB help.hit
RETURN
'
h.12:
PRINT
PRINT TAB(5); " Rotate Lines/ Curves/ Polygons/ Closed Curves(f.4)"
PRINT
PRINT TAB(5); "   Before any operation:"
PRINT TAB(5); "      RETURN = to enter the incremental angle"
PRINT
PRINT TAB(5); "   After the set:"
PRINT TAB(5); "      ARROWS, SPACE  = anticlockwise rotation"
PRINT TAB(5); "      RETURN         = to set the position and copy"
PRINT TAB(5); "      DEL            = to cancel operation"
GOSUB help.hit
RETURN
'
help.hit:
PRINT : PRINT TAB(60); : COLOR 10: PRINT "< Hit any key >"; : COLOR 7
DO: res$ = INKEY$: LOOP UNTIL res$ <> ""
RETURN
'
END SUB

SUB Killer (i%, s%)
'                                                                    kill i%
wkill% = 1
SetObject i%, 0, 0
IF i% <> nobj% - 1 THEN
  FOR j% = i% + 1 TO nobj% - 1
	FOR k% = 0 TO 6: obj%(j% - 1, k%) = obj%(j%, k%): NEXT k%
	FOR k% = 0 TO obj%(j% - 1, 1): xx(j% - 1, k%) = xx(j%, k%)
	  yy(j% - 1, k%) = yy(j%, k%): NEXT k%
	IF fnoo%(j% - 1) = 11 AND obj%(j% - 1, 5) <> s% AND obj%(j% - 1, 5) > i% THEN obj%(j% - 1, 5) = obj%(j% - 1, 5) - 1
  NEXT j%
END IF
nobj% = nobj% - 1
'
END SUB

SUB KillObject
'                                                            kill one object
job% = 10
CursorDisplay px%, py%
FOR i% = 0 TO 92: SWAP curs%(i%), curs1%(i%): NEXT i%
CursorDisplay px%, py%
KeySwitch 0
SetInst job%
wx1% = 54 * 8 - 8
wx2% = 54 * 8 + 40
wy1% = line1% * texth% - texth%
wy2% = line1% * texth%
LINE (PMAP(wx1% - 1, 2), PMAP(wy1%, 3))-(PMAP(wx2%, 2), PMAP(wy2%, 3)), 11, BF
ptext PMAP(wx1%, 2) + 19, PMAP(wy1%, 3) + 1, kky$(17), 0, 1
'
Marking 1, n%
startkilling:
IF n% = 0 THEN Marking 1, n%: GOTO donekilling
selh% = 1
DO
  CursorMotion keyin%
 IF keyin% = 4 THEN Marking 1, n%: GOTO donekilling
LOOP UNTIL keyin% <> 1
IF keyin% = 2 THEN
selh% = 0
VIEW SCREEN (0, 0)-(windowx%(0), winpy%)
Marking.Chk 1, sobj%, snode%
IF sobj% < 0 THEN Marking 1, n%: GOTO donekilling
ipy% = py%: ipx% = px%: L.Text ipx%, ipy%
PRINT "Sure(y/n)??";
bkey$ = yesno$
L.Text ipx%, ipy%: PRINT SPACE$(12);
IF bkey$ = "n" THEN Marking 1, n%: SetObject sobj%, 7, 0: GOTO donekilling
CursorDisplay px%, py%
grp% = obj%(sobj%, 0) - fnoo%(sobj%)
DO
  Marking.One 1, sobj%
  i% = sobj%                                                 'arrow deleting
  DO UNTIL i% = nobj% - 1
	i% = i% + 1
	IF fnoo%(i%) = 11 AND obj%(i%, 5) = sobj% THEN
	  Killer i%, sobj%
	  i% = i% - 1
	END IF
  LOOP
  Killer sobj%, sobj%                                      'kill THAT object
  sobj% = -1
  IF grp% <> 0 THEN                                           'group killing
	FOR i% = 0 TO nobj% - 1
	  IF obj%(i%, 0) - fnoo%(i%) = grp% THEN sobj% = i%: EXIT FOR
	NEXT i%
  END IF
LOOP UNTIL sobj% < 0
CursorDisplay px%, py%
IF nobj% <> 0 THEN GOTO startkilling
'=======================
 ELSEIF keyin% = 3 THEN
	G.Group1 0   ' 0 means kill
'==========================
END IF
'
donekilling:
SetInst job%
KeySwitch 1
CursorDisplay px%, py%
FOR i% = 0 TO 92: SWAP curs%(i%), curs1%(i%): NEXT i%
CursorDisplay px%, py%
job% = 0
selh% = 0
VIEW SCREEN (0, 0)-(windowx%(0), windowy%(0))
LINE (PMAP(wx1% - 1, 2), PMAP(wy1%, 3))-(PMAP(wx2%, 2), PMAP(wy2%, 3)), 0, BF
LOCATE line1%, 54: COLOR 3: PRINT kky$(17); : COLOR 7
'
END SUB

SUB MarkEnds (c%)
'                                                    marking end points only
c% = 0
xyshift% = INT(3! * wndwxy(wndwfctr%))
FOR i% = 0 TO nobj% - 1
IF fnoo%(i%) <> 1 AND fnoo%(i%) <> 3 AND fnoo%(i%) <> 6 THEN GOTO nomarkends
c% = c% + 1
PPUT xx(i%, 0) - xyshift%, yy(i%, 0) - xyshift%, mark%()
PPUT xx(i%, obj%(i%, 2)) - xyshift%, yy(i%, obj%(i%, 2)) - xyshift%, mark%()
nomarkends: NEXT i%
'
END SUB

SUB Marking (c%, n%)
'                                              marking1 or marking2 (c%=1,2)
IF nobj% = 0 THEN EXIT SUB
n% = 0
FOR i% = 0 TO nobj% - 1
IF obj%(i%, c% + 1) < 0 THEN GOTO nomarking
Marking.One c%, i%: n% = n% + 1
nomarking: NEXT i%
'
END SUB

SUB Marking.Chk (m%, sobj%, snode%)
'                                           get object # chosen (marking.m%)
sobj% = -1: snode% = -1
more% = 0
FOR i% = 0 TO nobj% - 1
IF obj%(i%, m% + 1) < 0 THEN GOTO nomarkchk
FOR j% = 0 TO obj%(i%, m% + 1)
dist = SQR((xx(i%, j%) - CSNG(px%)) ^ 2 + (yy(i%, j%) - CSNG(py%)) ^ 2)
IF dist < 3! * wndwxy(wndwfctr%) THEN
  sobj% = i%: snode% = j%
  SetObject sobj%, 3, 0
'------------------
' check for for next
'
FOR i1% = i% + 1 TO nobj% - 1
 FOR j1% = 0 TO obj%(i1%, m% + 1)
  dist = SQR((xx(i1%, j1%) - CSNG(px%)) ^ 2 + (yy(i1%, j1%) - CSNG(py%)) ^ 2)
  IF dist < 3! * wndwxy(wndwfctr%) THEN
    more% = 1
    EXIT FOR
  END IF
 NEXT j1%
 IF more% = 1 THEN EXIT FOR
NEXT i1%
IF more% = 1 THEN
 ipy% = py%: ipx% = px%: L.Text ipx%, ipy%
 PRINT "y/n?";
   bkey$ = yesno$
 L.Text ipx%, ipy%: PRINT SPACE$(5);
ELSE
  bkey$ = "y"
END IF
'------------
IF bkey$ = "y" THEN EXIT SUB
  SetObject sobj%, 7, 0
  sobj% = -1: snode% = -1
END IF
NEXT j%
nomarkchk: NEXT i%
'
END SUB

SUB Marking.One (c%, i%)
'                                                            mark one object
xyshift% = INT(3! * wndwxy(wndwfctr%))
FOR j% = 0 TO obj%(i%, c% + 1)
  IF fnoo%(i%) = obj%(i%, 0) THEN
	PPUT xx(i%, j%) - xyshift%, yy(i%, j%) - xyshift%, mark%()
  ELSE
	PPUT xx(i%, j%) - xyshift%, yy(i%, j%) - xyshift%, markg%()
  END IF
NEXT j%
'
END SUB

SUB Marking.Reg (sx%, sy%, ex%, ey%, total%)
'                                                       get objects # chosen
total% = -1
FOR i% = 0 TO nobj% - 1: IF obj%(i%, 2) < 0 THEN GOTO nomarkreg
FOR j% = 0 TO obj%(i%, 1)
IF (xx(i%, j%) - sx%) * (xx(i%, j%) - ex%) > 0 THEN GOTO nomarkreg1
IF (yy(i%, j%) - sy%) * (yy(i%, j%) - ey%) > 0 THEN GOTO nomarkreg1
total% = total% + 1: mobj%(total%) = i%: GOTO nomarkreg
nomarkreg1: NEXT j%
nomarkreg: NEXT i%
'
END SUB

SUB Object.Max.Check
'                                                      only warn the maximum
IF nobj% < UBOUND(xx, 1) THEN EXIT SUB
LOCATE 2, 25
IF nobj% = UBOUND(xx, 1) THEN
  COLOR 14
  PRINT CHR$(7); " The next one will be the last object. ";
ELSE
  COLOR 10
  PRINT CHR$(7); " This one is the very very last one!!! ";
END IF
COLOR 7
'
END SUB

SUB Rotate
'                                                              rotate object
job% = 12
KeySwitch 0
SetInst job%
s2 = pi / 90!
wx1% = 24 * 8 - 8
wx2% = 24 * 8 + 40
wy1% = line1% * texth% - texth%
wy2% = line1% * texth%
LINE (PMAP(wx1% - 1, 2), PMAP(wy1%, 3))-(PMAP(wx2%, 2), PMAP(wy2%, 3)), 11, BF
ptext PMAP(wx1%, 2) + 19, PMAP(wy1%, 3) + 1, kky$(14), 0, 1
'
startrotate:
Marking 2, n%
selh% = 1
IF n% = 0 THEN Marking 2, n%: GOTO donerotate1
DO
  CursorMotion keyin%
LOOP UNTIL keyin% <> 1
Marking 2, n%
IF keyin% = 4 THEN CursorDisplay px%, py%: GOTO donerotate
VIEW SCREEN (0, 0)-(windowx%(0), winpy%)
IF keyin% = 3 THEN
  L.Text px%, py%
  a$ = fno$(90, 1): PRINT "Angle (PI/n) : n = ";
  Chr.Input a$: s2 = VAL(a$): IF s2 <= 0! THEN s2 = 90!
  s2 = pi / s2
  L.Text px%, py%: PRINT SPACE$(30);
  GOTO startrotate
END IF
Marking.Chk 2, sobj%, snode%
IF sobj% < 0 THEN GOTO startrotate
selh% = 0
FOR i% = 0 TO 6: obj%(nobj%, i%) = obj%(sobj%, i%): NEXT i%
FOR i% = 0 TO obj%(nobj%, 1): xx(nobj%, i%) = xx(sobj%, i%)
yy(nobj%, i%) = yy(sobj%, i%): NEXT i%
DO
  CursorMotion keyin%
  CursorDisplay px%, py%
  IF keyin% <> 3 THEN
	SetObject nobj%, 0, 1
	FOR i% = 0 TO obj%(nobj%, 1)
	s1 = Angle(xx(nobj%, snode%), yy(nobj%, snode%), xx(nobj%, i%), yy(nobj%, i%))
	rad = SQR((xx(nobj%, i%) - xx(nobj%, snode%)) ^ 2 + (yy(nobj%, i%) - yy(nobj%, snode%)) ^ 2)
	xx(nobj%, i%) = xx(nobj%, snode%) + rad * COS(s1 + s2)
	yy(nobj%, i%) = yy(nobj%, snode%) - rad * SIN(s1 + s2)
	NEXT i%
	IF keyin% = 4 THEN GOTO donerotate
	SetObject nobj%, 3, 1
  END IF
  CursorDisplay px%, py%
LOOP UNTIL keyin% = 3
CursorDisplay px%, py%
SetObject nobj%, 0, 1
SetObject nobj%, 7, 0
nobj% = nobj% + 1
Object.Max.Check
'
donerotate:
IF sobj% >= 0 THEN
 SetObject sobj%, 0, 0
 SetObject sobj%, 7, 0
END IF
CursorDisplay px%, py%
donerotate1:
SetInst job%
KeySwitch 1
job% = 0
selh% = 0
VIEW SCREEN (0, 0)-(windowx%(0), windowy%(0))
LINE (PMAP(wx1% - 1, 2), PMAP(wy1%, 3))-(PMAP(wx2%, 2), PMAP(wy2%, 3)), 0, BF
LOCATE line1%, 24: COLOR 3: PRINT kky$(14); : COLOR 7
'
END SUB