[metapost] how to draw the water flow

[Dan Luecking]

At 02:39 PM 6/11/2009, you wrote:
>At 01:25 PM 6/10/2009, you wrote:
>>Hi,
>>
>>I'm new to the Metapost.  I want to draw some figures whick looks 
>>like the water-flow (see the attachment).  Dose anyone show me how 
>>to draw them?  Thank you very much.

[...]

>% rotate 45 degrees to get the desired orientation:
>beginfig(1);
>   draw P rotated -45 shifted (size,size);
>endfig;
>end

I forgot to allow for the rotation in the shift:
   draw P rotated -45 shifted (size,size)*sqrt(2);

Regards,
Dan

Daniel H. Luecking
Department of Mathematical Sciences
University of Arkansas
"Dubito ergo cogito, cogito ergo sum" --Descartes