[pstricks] Venn Diagram example?

[Herbert Voss]

Jan Steffan wrote:
> On Friday 08 July 2005 09:12, Herbert Voss wrote:
> 
>>http://PSTricks.tug.org/main.cgi?file=beamer/beamer
>>as an example for "transparency" colors.
> 
> In this example the hatch lines are aligned exactly on top
> of each other, so there is no transparency effect (at least with some
> viewers and printers). 

depends to the viewer _and_ magnification. No problem
when printed with dpi>600 or in professional prints

> Setting the angle of each hatchfill to a different value produces moiree 
> effect which come out more or less ugly, too.
> 
> Isn't there a way to slightly offset each fill so that the hatchlines 
> interleave? I could imagine that this would produce better results. 

feel free, it is easy to understand, how it works and then to create
some more options

Herbert