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Gemini User’s Manual
3ClO XL=X?-Xl:YL=Y?-Y!
3020 NX=ABS(XLtXFAC):NY=ASS(YLtYFAC!
3030 IF NX:NY TgEN NX=N"
7040 YS%=INT(NX+!)
3050 DX=XL/NSX:DY=Y!I~S' ' !ObO FDR !=! TO NSY,
3070 Xl=X!'DX:"!=Y!tDY
3OflO GOSUB 4000
3090 NCXT :
3100 RETURN
4000 REM PLOT A POINT A? Xl,Y!
4ClO XX-XltXFAC:YY=YltYFAC
4020 COL-?NTtXX)+:
4030 ROW~INTfYYI61
4040 XITXrINTiYY-(btROW))+l
4OSO BITX(CttL,ROW)=BIT%(COL,ROW) OR ?lASKX!X:T%!
4060 RETURK
Figure 74b.
This continuation of Figure 7-4a is the rest of one
approach to using bit-image graphics.
Figure 7-5.
Using the BASIC program provided in Figure 7-4, you can
obtain these results.
CONCLUSION
The limits on Gemini’s ability to produce readable text and graphic
images are limited only by your imagination, your computer
system, and your ability to properly use the functional command
codes.
When it comes to “imagination” and a good computer
system, you stand on your own ground. We can help you master
the function codes, as demonstrated in Chapter 9.