[NTG-context] transluency/transparency

2012-06-04 Thread Jan Pohanka

Hello,

is it possible to somehow set transluency or transparency of several  
objects?
The example should clarify, what I need: I have a template for company  
documents, which has some text, lines and graphics (external pdf or png)  
in its footer. Now I want to make the header be less visible than the rest  
of the page. Surely I can set a color of the text to gray and edit the  
image, but is there some other way?


best regards
Jan

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http://www.opera.com/mail/

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Re: [NTG-context] transluency/transparency

2012-06-04 Thread Alan BRASLAU
On Mon, 4 Jun 2012 10:33:14 +0200
Jan Pohanka xhpoha...@gmail.com wrote:

 Hello,
 
 is it possible to somehow set transluency or transparency of several  
 objects?
 The example should clarify, what I need: I have a template for
 company documents, which has some text, lines and graphics (external
 pdf or png) in its footer. Now I want to make the header be less
 visible than the rest of the page. Surely I can set a color of the
 text to gray and edit the image, but is there some other way?
 
 best regards
 Jan
 

See page 204, section 8.5 of the metafun book

loadfigure gracht.mp number 1 scaled .5 ;
addto currentpicture also
(currentpicture softened .8)
shifted (bbwidth(currentpicture)+.5cm,0) ;

(this example draws the picture alongside its softened copy.)

Alan

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Re: [NTG-context] transluency/transparency

2012-06-04 Thread Jan Pohanka

See page 204, section 8.5 of the metafun book

loadfigure gracht.mp number 1 scaled .5 ;
addto currentpicture also
(currentpicture softened .8)
shifted (bbwidth(currentpicture)+.5cm,0) ;



thank you for the hint, but it seems, that softened does not work for  
externalfigure


\startMPcode
draw externalfigure logo.pdf scaled 5cm softened 0.5;
\stopMPcode

inserted text ...lable:=true; ]===], false)}

\meta_process_graphic ...!!es , \MPaskedfigure )}}
  \egroup \placeMPgraphic  
\m...


regards
Jan

--
Tato zpráva byla vytvořena převratnou poštovní aplikací Opery:  
http://www.opera.com/mail/

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Re: [NTG-context] transluency/transparency

2012-06-04 Thread Rogers, Michael K
On Jun 4, 2012, at 5:45 AM, Jan Pohanka wrote:

 See page 204, section 8.5 of the metafun book

 loadfigure gracht.mp number 1 scaled .5 ;
 addto currentpicture also
 (currentpicture softened .8)
 shifted (bbwidth(currentpicture)+.5cm,0) ;


 thank you for the hint, but it seems, that softened does not work for 
 externalfigure

 \startMPcode
 draw externalfigure logo.pdf scaled 5cm softened 0.5;
 \stopMPcode

 inserted text ...lable:=true; ]===], false)}

 \meta_process_graphic ...!!es , \MPaskedfigure )}}
  \egroup \placeMPgraphic \m...

 regards
 Jan

What about drawing a translucent white rectangle over the graphic?



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Re: [NTG-context] transluency/transparency

2012-06-04 Thread Mojca Miklavec
On Mon, Jun 4, 2012 at 2:02 PM, Rogers, Michael K wrote:
 On Jun 4, 2012, at 5:45 AM, Jan Pohanka wrote:

 See page 204, section 8.5 of the metafun book

 loadfigure gracht.mp number 1 scaled .5 ;
 addto currentpicture also
 (currentpicture softened .8)
 shifted (bbwidth(currentpicture)+.5cm,0) ;


 thank you for the hint, but it seems, that softened does not work for 
 externalfigure

 \startMPcode
 draw externalfigure logo.pdf scaled 5cm softened 0.5;
 \stopMPcode

 inserted text ...lable:=true; ]===], false)}

 \meta_process_graphic ...!!es , \MPaskedfigure )}}
                                                  \egroup \placeMPgraphic 
 \m...

 regards
 Jan

 What about drawing a translucent white rectangle over the graphic?

I wanted to say that Hans already implemented some code to add
transparency (or even transparent masks) to bitmap images, but I'm
still not sure how to use that code.

However, drawing a transparent white rectangle over the bitmap graphic
would definitely be the easiest approach if you don't need to see
though the image.

Mojca
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