[metapost] MP docs

[Stephan Hennig]

Dan Luecking schrieb:

> Also .5(1,1,1,1) still produces black, while .5(0,0,0,1) gives a
> gray.

The attached example compares shading from magenta to (0,0,0,1) and
(1,1,1,1).  Clearly, mediating with (1,1,1,1) gives not the expected
result (half of the shading is black), but (0,0,0,1) does.

Best regards,
Stephan Hennig


beginfig(1);
  for i=0 upto 100:
    fill unitsquare xscaled 200bp yscaled 8bp shifted (0,8i)
      withcmykcolor (i/100)[(1,0,0,0),(0,0,0,1)];
    fill unitsquare xscaled 200bp yscaled 8bp shifted (220bp,8i)
      withcmykcolor (i/100)[(1,0,0,0),(1,1,1,1)];
  endfor
endfig;
end