Ben Chambers <bdc### [at] hotmailcom> wrote:
: However, experimentation shows that the four corners are actually
: P-U-V, P+U-V
: P-U+V, P+U+V
: With the center of the rectangle (more or less :) being located at P.

: And so, two sides would have a length of 2*|U| and the other two would have
: 2*|V|.

  Wrong. The corners are located at

P-U/2-V/2, P+U/2-V/2
P-U/2+V/2, P+U/2+V/2

and the length of the sides is U and V.

-- 
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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