Draw a sphere: Difference between revisions
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m (→{{header|REXX}}: added/changed comments, changed 1 dithering character, simplified NORM and SQRT subroutines.) |
m (→{{header|REXX}}: added notes about show output when executing on an ASCII machine.) |
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<br>The REXX language doesn't have a '''SQRT''' function, so a version is included here. |
<br>The REXX language doesn't have a '''SQRT''' function, so a version is included here. |
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<br>Same with the '''CEIL'''ing and '''FLOOR''' functions. |
<br>Same with the '''CEIL'''ing and '''FLOOR''' functions. |
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<br><br>Programming note: the output will appear slightly different when executed on an EBCDIC machine. |
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<lang rexx>/*REXX program expresses a lighted sphere with simple chars for shading.*/ |
<lang rexx>/*REXX program expresses a lighted sphere with simple chars for shading.*/ |
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call drawSphere 19, 4, 2/10 /*draw a sphere with radius 19. */ |
call drawSphere 19, 4, 2/10 /*draw a sphere with radius 19. */ |
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do k=j+5 to 0 by -1; if m.k>11 then numeric digits m.k; g=.5*(g+x/g); end |
do k=j+5 to 0 by -1; if m.k>11 then numeric digits m.k; g=.5*(g+x/g); end |
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numeric digits d; return g/1</lang> |
numeric digits d; return g/1</lang> |
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'''output''' |
'''output''' when executed on an ASCII machine: |
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<pre style="height:105ex"> |
<pre style="height:105ex"> |
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eeeeeeeeee@@@@@@@ |
eeeeeeeeee@@@@@@@ |
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