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!Compile/Compile

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

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Tape/disk: Home » Archimedes archive » Acorn User » AU 1993-06.adf » !Render_Render
Filename: !Compile/Compile
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File size: 3266 bytes
Load address: 0000
Exec address: 0000
File contents
   10REM     >Compile
   20REM By  Robin Barnes
   30REM For 32-bit machines
   40REM (c) BAU June 1993
   50:
   60PRINT "Render Compiler v1.00"
   70:
   80sze%=320*1024
   90obj=0.4:spr=0.1:div=0.5:wire%=TRUE
  100maxlgt%=32:maxmat%=128:maxobj%=256
  110maxspr%=8
  120:
  130PROCinput
  140SYS "OS_File",&05,"s."+file$ TO tst%,,,,txtsze%
  150IF tst%=0 THEN PRINT "file not found":END
  160:
  170DIM text% txtsze%+1
  180SYS "OS_File",&FF,"s."+file$,text%,0
  190text%?txtsze%=0
  200PROCsetup
  210:
  220SYS "OS_File",&FF,"<Compile$Dir>.code",code%,0
  230PROCcode
  240PROCcompile(txtsze%)
  250PROCsave
  260IF wire% AND (flag%=7) AND (pntnum%>0) AND (polnum%>0) THEN
  270MODE 0
  280PROCdraw
  290ENDIF
  300END
  310:
  320DEF PROCcode
  330fputobas=code%+code%!32
  340bastofpu=code%+code%!36
  350number=code%+code%!40
  360transform=code%+code%!44
  370perspective=code%+code%!48
  380input=code%+52
  390!input=input%
  400ENDPROC
  410:
  420DEF PROCcompile(end%)
  430read%=0:depth%=0:line%=0
  440WHILE text%?read%<>0
  450com$=FNread(0)
  460CASE com$ OF
  470WHEN "display":PROCdisplay:flag%=flag% OR 1
  480WHEN "view":PROCview:flag%=flag% OR 2
  490WHEN "light":PROClight
  500WHEN "ambient" :PROCambient:flag%=flag% OR 4
  510WHEN "sprite" :PROCspritefile
  520WHEN "material" :PROCmaterial
  530WHEN "define" :PROCdefine
  540OTHERWISE
  550obj%=FNfind(com$,objnme$(),objnum%):IF obj%>=objnum% THEN PROCerror(0)
  560PROCobject(obj%)
  570ENDCASE
  580ENDWHILE
  590!light%=lgtnum%:!data%=matnum%
  600!point%=pntnum%:!offset%=polnum%
  610!sprdata%=spradr%+8+4*sprnum%:sprdata%!4=sprnum%
  620ENDPROC
  630:
  640DEF PROCsetup
  650datsze%=sze%*(1-obj-spr):objsze%=sze%*obj:sprsze%=sze%*spr
  660DIM code% &2000
  670DIM setup% 344+12*maxlgt%
  680DIM data% datsze%+4+28*maxmat%
  690DIM object% objsze%
  700DIM sprdata% sprsze%
  710DIM define% 12*maxobj%
  720DIM input% 124
  730DIM objtrn% 48,vwtrn% 48
  740DIM matnme$(maxmat%),objnme$(maxobj%)
  750display%=setup%:transform%=setup%+20:lens%=setup%+68
  760ambient%=setup%+68:light%=setup%+80:output%=setup%+84+12*maxlgt%
  770material%=data%+4:point%=data%+4+28*maxmat%:offset%=point%+div*datsze%
  780poly%=offset%+0.1*(1-div)*datsze%
  790defpnt%=object%:defoff%=defpnt%+objsze%*div
  800defpol%=defoff%+0.1*(1-div)*objsze%
  810sproff%=sprdata%+8:sprmap%=sproff%+4*maxspr%
  820sprnme%=sprdata%+sprsze%-256
  830!define%=0:define%!4=0:define%!8=0
  840lgtnum%=0:matnum%=0:objnum%=0
  850pntnum%=0:polnum%=0
  860poladr%=0:flag%=0
  870spradr%=0:sprnum%=0
  880ENDPROC
  890:
  900DEF PROCsave
  910IF (lgtnum%>0) AND (flag%=7) THEN
  920SYS "OS_Find",&80,"v."+file$ TO handle%
  930SYS "OS_GBPB",2,handle%,setup%,84+12*lgtnum%
  940SYS "OS_GBPB",2,handle%,output%,LEN($output%)+1
  950SYS "OS_Find",&00,handle%
  960ENDIF
  970IF (pntnum%>0) AND (polnum%>0) AND (matnum%>0) THEN
  980SYS "OS_Find",&80,"d."+file$ TO handle%
  990SYS "OS_GBPB",2,handle%,data%,28*matnum%+4
 1000SYS "OS_GBPB",2,handle%,point%,4+12*pntnum%
 1010SYS "OS_GBPB",2,handle%,offset%,4+4*polnum%
 1020SYS "OS_GBPB",2,handle%,poly%,poladr%
 1030SYS "OS_Find",&00,handle%
 1040SYS "OS_Find",&80,"t."+file$ TO handle%
 1050SYS "OS_GBPB",2,handle%,sprdata%,8+4*sprnum%
 1060IF spradr%>0 THEN SYS "OS_GBPB",2,handle%,sprmap%,spradr%
 1070SYS "OS_GBPB",2,handle%,sprnme%,LEN($sprnme%)+1
 1080SYS "OS_Find",&00,handle%
 1090ENDIF
 1100ENDPROC
 1110:
 1120DEF PROClight
 1130LOCAL light()
 1140DIM light(3)
 1150WHILE depth%=1
 1160lghtrot=EVAL(FNread(1))
 1170lghtelv=EVAL(FNread(1))
 1180light(1)=COS RAD(lghtelv)*SIN RAD(lghtrot)
 1190light(3)=COS RAD(lghtelv)*COS RAD(lghtrot)
 1200light(2)=SIN RAD(lghtelv)
 1210light()=light()/MOD light()
 1220|number=light(1):CALL bastofpu,light%!(4+12*lgtnum%)
 1230|number=light(2):CALL bastofpu,light%!(8+12*lgtnum%)
 1240|number=light(3):CALL bastofpu,light%!(12+12*lgtnum%)
 1250lgtnum%+=1:IF lgtnum%>maxlgt% THEN PROCerror(3)
 1260ENDWHILE
 1270ENDPROC
 1280:
 1290DEF PROCdisplay
 1300$output%=FNread(1)
 1310|number=EVAL(FNread(1)):CALL bastofpu,!display%
 1320|number=EVAL(FNread(1)):CALL bastofpu,display%!4
 1330display%!8=1
 1340res$=FNread(1)
 1350IF res$="low" THEN display%!8=2
 1360IF res$="high" THEN display%!8=0
 1370display%!12=EVAL(FNread(1))
 1380display%!16=EVAL(FNread(1))
 1390ENDPROC
 1400:
 1410DEF PROCspritefile
 1420$sprnme%=FNread(1)
 1430ENDPROC
 1440:
 1450DEF PROCambient
 1460|number=EVAL(FNread(1)):CALL bastofpu,!ambient%
 1470|number=EVAL(FNread(1)):CALL bastofpu,ambient%!4
 1480|number=EVAL(FNread(1)):CALL bastofpu,ambient%!8
 1490ENDPROC
 1500:
 1510DEF PROCview
 1520|number=-EVAL(FNread(1)):CALL bastofpu,!transform%
 1530|number=-EVAL(FNread(1)):CALL bastofpu,transform%!4
 1540|number=-EVAL(FNread(1)):CALL bastofpu,transform%!8
 1550pit=EVAL(FNread(1)):yaw=EVAL(FNread(1)):rot=EVAL(FNread(1))
 1560PROCrotate(pit,yaw,rot,transform%+12)
 1570ENDPROC
 1580:
 1590DEF PROCrotate(pit,yaw,rot,matrix%)
 1600LOCAL mtx(),trn()
 1610DIM mtx(2,2),trn(2,2)
 1620cosyaw=COS RAD(yaw):sinyaw=SIN RAD(yaw)
 1630cospit=COS RAD(pit):sinpit=SIN RAD(pit)
 1640cosrot=COS RAD(rot):sinrot=SIN RAD(rot)
 1650mtx(1,1)=cospit:mtx(2,1)=sinpit:mtx(1,2)=-sinpit:mtx(2,2)=cospit
 1660trn(0,0)=cosyaw:trn(2,0)=-sinyaw:trn(0,2)=sinyaw:trn(2,2)=cosyaw
 1670mtx(0,0)=1:trn(1,1)=1:mtx()=trn().mtx():trn()=0
 1680trn(0,0)=cosrot:trn(1,0)=-sinrot:trn(0,1)=sinrot:trn(1,1)=cosrot
 1690trn(2,2)=1:mtx()=trn().mtx()
 1700FOR ymt%=0 TO 2
 1710FOR xmt%=0 TO 2
 1720|number=mtx(xmt%,ymt%):CALL bastofpu,matrix%!(4*xmt%+12*ymt%)
 1730NEXT xmt%,ymt%
 1740ENDPROC
 1750:
 1760DEF PROCmaterial
 1770WHILE depth%=1
 1780matnme$(matnum%)=FNread(1)
 1790FOR var%=0 TO 6
 1800|number=EVAL(FNread(1)):CALL bastofpu,material%!(28*matnum%+4*var%)
 1810NEXT var%
 1820matnum%+=1:IF matnum%>maxmat% THEN PROCerror(3)
 1830ENDWHILE
 1840ENDPROC
 1850:
 1860DEF FNfind(str$,cmp$(),strnum%)
 1870str%=0
 1880WHILE str$<>cmp$(str%) AND str%<strnum%
 1890str%+=1
 1900ENDWHILE
 1910=str%
 1920:
 1930DEF PROCdefine
 1940objpnt%=define%!(12*objnum%)+defpnt%
 1950objpol%=define%!(4+12*objnum%)+defpol%
 1960objoff%=define%!(8+12*objnum%)+defoff%
 1970objptn%=0:objpln%=0:obplad%=0
 1980objnme$(objnum%)=FNread(1)
 1990WHILE depth%=1
 2000obj$=FNread(1)
 2010IF obj$="point" THEN PROCpoint
 2020IF obj$="shape" THEN PROCshape
 2030IF obj$="link" THEN PROClink
 2040IF obj$="surface" THEN PROCsurface
 2050ENDWHILE
 2060!objpnt%=objptn%
 2070!objoff%=objpln%
 2080objnum%+=1:IF objnum%>maxobj% THEN PROCerror(3)
 2090define%!(12*objnum%)=objpnt%+4+12*objptn%-defpnt%
 2100define%!(4+12*objnum%)=objpol%+obplad%-defpol%
 2110define%!(8+12*objnum%)=objoff%+4+4*objpln%-defoff%
 2120ENDPROC
 2130:
 2140DEF PROCpoint
 2150WHILE depth%=2
 2160|number=EVAL(FNread(2)):CALL bastofpu,objpnt%!(4+12*objptn%)
 2170|number=EVAL(FNread(2)):CALL bastofpu,objpnt%!(8+12*objptn%)
 2180|number=EVAL(FNread(2)):CALL bastofpu,objpnt%!(12+12*objptn%)
 2190objptn%+=1:IF (12+12*objptn%)>objoff%-objpnt% THEN PROCerror(3)
 2200ENDWHILE
 2210ENDPROC
 2220:
 2230DEF PROCshape
 2240LOCAL vct()
 2250DIM vct(8)
 2260sde%=EVAL(FNread(2))
 2270FOR vct%=0 TO 8
 2280vct(vct%)=EVAL(FNread(2))
 2290NEXT vct%
 2300:
 2310FOR rot%=0 TO sde%-1
 2320theta=2*PI*rot%/sde%
 2330|number=vct(3)*COS(theta)+vct(6)*SIN(theta)+vct(0)
 2340CALL bastofpu,objpnt%!(4+12*objptn%)
 2350|number=vct(4)*COS(theta)+vct(7)*SIN(theta)+vct(1)
 2360CALL bastofpu,objpnt%!(8+12*objptn%)
 2370|number=vct(5)*COS(theta)+vct(8)*SIN(theta)+vct(2)
 2380CALL bastofpu,objpnt%!(12+12*objptn%)
 2390objptn%+=1:IF (12+12*objptn%)>objoff%-objpnt% THEN PROCerror(3)
 2400NEXT rot%
 2410ENDPROC
 2420:
 2430DEF PROClink
 2440idt%=-1*(FNread(2)="flat")
 2450objoff%!(4+4*objpln%)=obplad%
 2460objpol%!obplad%=idt%:obplad%+=4
 2470vrtx%=0:vrtadr%=obplad%:obplad%+=4
 2480WHILE depth%=2
 2490objpol%!obplad%=VAL(FNread(2)):obplad%+=4
 2500IF obplad%>objsze%+objpnt%-objpol% THEN PROCerror(3)
 2510vrtx%+=1
 2520ENDWHILE
 2530objpol%!obplad%=objpol%!(vrtadr%+4):obplad%+=4:vrtx%+=1
 2540objpol%!vrtadr%=vrtx%
 2550objpln%+=1:IF (4+4*objpln%)>poly%-offset% THEN PROCerror(3)
 2560ENDPROC
 2570:
 2580DEF PROCsurface
 2590idt%=-1*(FNread(2)="flat")
 2600pntorg%=EVAL(FNread(2))
 2610xwd%=EVAL(FNread(2)):ywd%=EVAL(FNread(2))
 2620xjn%=EVAL(FNread(2)):yjn%=EVAL(FNread(2))
 2630FOR ypl%=0 TO ywd%-2+ABS(yjn%)
 2640FOR xpl%=0 TO xwd%-2+ABS(xjn%)
 2650fst%=xwd%*ypl%+xpl%+pntorg%
 2660sec%=fst%+1
 2670thr%=sec%+xwd%
 2680frt%=fst%+xwd%
 2690objoff%!(4+4*objpln%)=obplad%
 2700objpol%!obplad%=idt%:obplad%+=4
 2710objpol%!obplad%=5:obplad%+=4
 2720objpol%!obplad%=fst%:obplad%+=4
 2730IF xjn% AND xpl%>xwd%-2 THEN  sec%-=xwd%:thr%-=xwd%
 2740IF yjn% AND ypl%>ywd%-2 THEN  thr%-=ywd%*xwd%:frt%-=ywd%*xwd%
 2750objpol%!obplad%=sec%:obplad%+=4
 2760objpol%!obplad%=thr%:obplad%+=4
 2770objpol%!obplad%=frt%:obplad%+=4
 2780objpol%!obplad%=fst%:obplad%+=4
 2790objpln%+=1:IF (4+4*objpln%)>objpol%-objoff% THEN PROCerror(3)
 2800IF obplad%>objsze%+objpnt%-objpol% THEN PROCerror(3)
 2810NEXT xpl%,ypl%
 2820ENDPROC
 2830:
 2840DEF PROCobject(obj%)
 2850LOCAL pntflg%()
 2860objpnt%=define%!(12*obj%)+defpnt%
 2870objpol%=define%!(4+12*obj%)+defpol%
 2880objoff%=define%!(8+12*obj%)+defoff%
 2890xps=EVAL(FNread(1))
 2900yps=EVAL(FNread(1))
 2910zps=EVAL(FNread(1))
 2920:
 2930pntadr%=12*pntnum%:overlap%=point%!pntadr%
 2940IF (pntadr%+12*!objpnt%)>offset%-point% THEN PROCerror(3)
 2950FOR pnt%=0 TO !objpnt%*3
 2960point%!(pntadr%+4*pnt%)=objpnt%!(4*pnt%)
 2970NEXT pnt%
 2980input%!8=point%+pntadr%
 2990input%!40=objtrn%
 3000mat%=-1
 3010WHILE depth%=1
 3020obj$=FNread(1)
 3030CASE obj$ OF
 3040WHEN "texture" :mat%=&8000 OR sprnum%:PROCtexture
 3050WHEN "transform" :PROCobjtrn
 3060WHEN "rotate" :PROCobjrot
 3070WHEN "scale" :PROCobjscl
 3080OTHERWISE
 3090mat%=FNfind(obj$,matnme$(),matnum%)
 3100IF mat%>=matnum% THEN PROCerror(4)
 3110ENDCASE
 3120ENDWHILE
 3130IF mat%<0 THEN PROCerror(5)
 3140PROCmove
 3150point%!pntadr%=overlap%
 3160:
 3170DIM pntflg%(!objpnt%)
 3180FOR pol%=1 TO !objoff%
 3190offset%!(4+4*polnum%)=poladr%
 3200obplad%=objoff%!(4*pol%)
 3210poly%!poladr%=(objpol%!obplad%) OR (mat%<<16):obplad%+=4:poladr%+=4
 3220vrtx%=objpol%!obplad%:poly%!poladr%=vrtx%:obplad%+=4:poladr%+=4
 3230FOR polcopy%=0 TO vrtx%-1
 3240pntflg%(objpol%!obplad%)=1
 3250poly%!poladr%=objpol%!obplad%+pntnum%:obplad%+=4:poladr%+=4
 3260IF poladr%>datsze%-poly%+point% THEN PROCerror(3)
 3270NEXT polcopy%
 3280polnum%+=1
 3290IF (4+4*polnum%)>poly%-offset% THEN PROCerror(3)
 3300NEXT pol%
 3310pntnum%+=!objpnt%
 3320IF SUM pntflg%()<!objpnt% PROCerror(2)
 3330ENDPROC
 3340:
 3350DEF PROCobjtrn
 3360!objtrn%=0:objtrn%!4=0:objtrn%!8=0
 3370FOR trn%=0 TO 8
 3380|number=EVAL(FNread(2)):CALL bastofpu,objtrn%!(12+4*trn%)
 3390NEXT trn%
 3400CALL transform
 3410ENDPROC
 3420:
 3430DEF PROCobjrot
 3440!objtrn%=0:objtrn%!4=0:objtrn%!8=0
 3450pit=EVAL(FNread(2)):yaw=EVAL(FNread(2)):rot=EVAL(FNread(2))
 3460PROCrotate(pit,yaw,rot,objtrn%+12)
 3470CALL transform
 3480ENDPROC
 3490:
 3500DEF PROCobjscl
 3510!objtrn%=0:objtrn%!4=0:objtrn%!8=0
 3520objtrn%!16=0:objtrn%!20=0:objtrn%!24=0
 3530objtrn%!32=0:objtrn%!36=0:objtrn%!40=0
 3540|number=EVAL(FNread(2)):CALL bastofpu,objtrn%!12
 3550|number=EVAL(FNread(2)):CALL bastofpu,objtrn%!28
 3560|number=EVAL(FNread(2)):CALL bastofpu,objtrn%!44
 3570CALL transform
 3580ENDPROC
 3590:
 3600DEF PROCmove
 3610|number=xps:CALL bastofpu,!objtrn%
 3620|number=yps:CALL bastofpu,objtrn%!4
 3630|number=zps:CALL bastofpu,objtrn%!8
 3640objtrn%!12=&3F800000:objtrn%!16=0:objtrn%!20=0
 3650objtrn%!24=0:objtrn%!28=&3F800000:objtrn%!32=0
 3660objtrn%!36=0:objtrn%!40=0:objtrn%!44=&3F800000
 3670CALL transform
 3680ENDPROC
 3690:
 3700DEF PROCtexture
 3710sprite$=FNread(2)
 3720sproff%!(4*sprnum%)=spradr%
 3730sprmap%!spradr%=pntnum%:spradr%+=4
 3740$(sprmap%+spradr%)=sprite$:sprmap%?(spradr%+LEN(sprite$))=0:spradr%+=12
 3750|number=EVAL(FNread(2)):CALL bastofpu,sprmap%!spradr%:spradr%+=4
 3760|number=EVAL(FNread(2)):CALL bastofpu,sprmap%!spradr%:spradr%+=4
 3770|number=EVAL(FNread(2)):CALL bastofpu,sprmap%!spradr%:spradr%+=4
 3780IF spradr%>sprsze%+sprdata%-sprmap% THEN PROCerror(3)
 3790sprpnt%=0
 3800WHILE depth%=2
 3810com$=FNread(2)
 3820IF com$="fit" THEN PROCsprfit
 3830IF com$="map" THEN PROCsprmap
 3840IF sprpnt%>!objpnt% THEN PROCerror(7)
 3850ENDWHILE
 3860IF sprpnt%<!objpnt% THEN PROCerror(6)
 3870sprnum%+=1:IF sprnum%>maxspr% THEN PROCerror(3)
 3880ENDPROC
 3890:
 3900DEF PROCsprfit
 3910xwd%=EVAL(FNread(3)):ywd%=EVAL(FNread(3))
 3920FOR ymap%=0 TO ywd%-1
 3930FOR xmap%=0 TO xwd%-1
 3940|number=xmap%/(xwd%-1):CALL bastofpu,sprmap%!spradr%:spradr%+=4
 3950|number=1-ymap%/(ywd%-1):CALL bastofpu,sprmap%!spradr%:spradr%+=4
 3960IF spradr%>sprsze%+sprdata%-sprmap% THEN PROCerror(3)
 3970sprpnt%+=1
 3980NEXT xmap%,ymap%
 3990ENDPROC
 4000:
 4010DEF PROCsprmap
 4020|number=EVAL(FNread(3)):CALL bastofpu,sprmap%!spradr%:spradr%+=4
 4030|number=EVAL(FNread(3)):CALL bastofpu,sprmap%!spradr%:spradr%+=4
 4040IF spradr%>sprsze%+sprdata%-sprmap% THEN PROCerror(3)
 4050sprpnt%+=1
 4060ENDPROC
 4070:
 4080DEF PROCerror(err%)
 4090PRINT
 4100CASE err% OF
 4110WHEN 0 : PRINT "Unknown command or Object";
 4120WHEN 1 : PRINT "Insufficent variables";
 4130WHEN 2 : PRINT "Unused point in Object";
 4140WHEN 3 : PRINT "Too many - memory full";
 4150WHEN 4 : PRINT "Unknown command or Material";
 4160WHEN 5 : PRINT "No Material";
 4170WHEN 6 : PRINT "Unmapped points in Texture;
 4180WHEN 7 : PRINT "Too many mapped points in Texture";
 4190OTHERWISE
 4200REPORT
 4210ENDCASE
 4220PRINT ;" at line ";line%
 4230END
 4240:
 4250DEF FNread(level%)
 4260IF depth%<>level% THEN PROCerror(1)
 4270str$=""
 4280WHILE NOT FNspace AND (text%?read%<>0)
 4290VDU text%?read%
 4300str$+=CHR$(text%?read%)
 4310read%+=1
 4320ENDWHILE
 4330WHILE FNspace AND (text%?read%<>0)
 4340VDU text%?read%
 4350IF text%?read%=10 THEN VDU 13:line%+=1
 4360IF text%?read%=123 THEN depth%+=1
 4370IF text%?read%=125 THEN depth%-=1
 4380read%+=1
 4390ENDWHILE
 4400=str$
 4410:
 4420DEF FNspace
 4430=(text%?read%<33) OR (text%?read%=44) OR (text%?read%>122)
 4440:
 4450DEF PROCinput
 4460SYS "OS_GetEnv" TO text%
 4470read%=0:depth%=0:REPEAT
 4480com$=FNread(0)
 4490UNTIL (text%?read%=0) OR INSTR(com$,"COMPILE") OR INSTR(com$,"Compile")
 4500file$=FNread(0)
 4510WHILE text%?read%<>0
 4520com$=FNread(0)
 4530CASE com$ OF
 4540WHEN "-s" : sze%=1024*VAL(FNread(0))
 4550WHEN "-o" : obj=VAL(FNread(0))/100
 4560WHEN "-t" : spr=VAL(FNread(0))/100
 4570WHEN "-w" : wire%=FALSE
 4580ENDCASE
 4590ENDWHILE
 4600PRINT
 4610IF file$="" THEN INPUT "filename : "file$
 4620ENDPROC
 4630:
 4640DEF PROCdraw
 4650PRINT "preparing ...."
 4660CALL fputobas,!setup%:xscale=|number
 4670CALL fputobas,setup%!4:yscale=|number
 4680width%=setup%!12:height%=setup%!16
 4690input%!8=point%:input%!40=setup%+20
 4700CALL transform
 4710CALL perspective
 4720CLS
 4730polnum%=!offset%:polofst%=offset%+4
 4740FOR draw%=0 TO polnum%-1
 4750poladr%=polofst%!(4*draw%)+4
 4760FOR drwsde%=1 TO (poly%!poladr%)
 4770vrt%=poly%!(poladr%+4*drwsde%)
 4780CALL fputobas,point%!(4+12*vrt%):xpos=|number
 4790CALL fputobas,point%!(8+12*vrt%):ypos=|number
 4800CALLfputobas,point%!(12+12*vrt%):zpos=|number
 4810IF zpos<=0 THEN
 4820xpos%=4096*SGN(xpos):ypos%=4096*SGN(ypos)
 4830ELSE
 4840xpos%=xpos*xscale+width%/2:ypos%=ypos*yscale+height%/2
 4850ENDIF
 4860IF drwsde%=1 OR zpos<=0 THEN MOVE xpos%,ypos% ELSE DRAW xpos%,ypos%
 4870NEXTdrwsde%
 4880NEXTdraw%
 4890ENDPROC

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00003260  13 1a 05 e1 0d ff                                 |......|
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