Draw a sphere: Difference between revisions
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m →{{header|REXX}}: elided a duplicated line. |
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dot=s1*v1 + s2*v2 + s3*v3 /*the dot product of the Vs*/ |
dot=s1*v1 + s2*v2 + s3*v3 /*the dot product of the Vs*/ |
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if dot>0 then dot=0 /*if positive, make it zero*/ /*◄■■■■ same as: dot=max(0, dot) */ |
if dot>0 then dot=0 /*if positive, make it zero*/ /*◄■■■■ same as: dot=max(0, dot) */ |
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if dot>0 then dot=0 /*if positive, make it zero*/ |
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b=-dot**k + ambient /*calculate the brightness.*/ |
b=-dot**k + ambient /*calculate the brightness.*/ |
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if b<=0 then brite=shadeLen |
if b<=0 then brite=shadeLen |
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