hlingrid text t parameter?

hlingrid text t parameter?

[David Arnold]

All,

In mp-grid.mp, I find this definition:

def hlingrid (expr Min, Max, Step, Length, Width) text t =
   image ( for i=Min step Step until Max+grid_eps :
     draw (origin--(Width,0)) shifted (0,i*(Length/Max)) t ;
   endfor ; ) ;
enddef ;

See the text t at the end of the first line? Can someone tell me what  
that does and can I have a small example of its use?

Thanks.

Re: hlingrid text t parameter?

[Aditya Mahajan]

<--- On Dec 26, David Arnold wrote --->

> All,
>
> In mp-grid.mp, I find this definition:
>
> def hlingrid (expr Min, Max, Step, Length, Width) text t =
> image ( for i=Min step Step until Max+grid_eps :
>   draw (origin--(Width,0)) shifted (0,i*(Length/Max)) t ;
> endfor ; ) ;
> enddef ;
>
> See the text t at the end of the first line? Can someone tell me what 
> that does and can I have a small example of its use?

I think, (I can not test it right now), that this should allow you to 
do things like

hlingrid(0,10,0.1,5cm,3cm) withcolor 0.5white ;

which will draw the line with 50% gray, and

hlingrid(0,10,0.1,5cm,3cm) dashed evenly ;

which will draw a dashed grid and so on.


Aditya

-- 
Aditya Mahajan, EECS Systems, University of Michigan
http://www.eecs.umich.edu/~adityam || Ph: 7342624008

Re: hlingrid text t parameter?

[David Arnold]

Perfect! Thanks.

On Dec 26, 2005, at 11:29 PM, Aditya Mahajan wrote:

> <--- On Dec 26, David Arnold wrote --->
>
>> All,
>>
>> In mp-grid.mp, I find this definition:
>>
>> def hlingrid (expr Min, Max, Step, Length, Width) text t =
>> image ( for i=Min step Step until Max+grid_eps :
>>   draw (origin--(Width,0)) shifted (0,i*(Length/Max)) t ;
>> endfor ; ) ;
>> enddef ;
>>
>> See the text t at the end of the first line? Can someone tell me  
>> what that does and can I have a small example of its use?
>
> I think, (I can not test it right now), that this should allow you  
> to do things like
>
> hlingrid(0,10,0.1,5cm,3cm) withcolor 0.5white ;
>
> which will draw the line with 50% gray, and
>
> hlingrid(0,10,0.1,5cm,3cm) dashed evenly ;
>
> which will draw a dashed grid and so on.
>
>
> Aditya
>
> -- 
> Aditya Mahajan, EECS Systems, University of Michigan
> http://www.eecs.umich.edu/~adityam || Ph: 7342624008
> _______________________________________________
> ntg-context mailing list
> ntg-context@ntg.nl
> http://www.ntg.nl/mailman/listinfo/ntg-context

Re: hlingrid text t parameter?

[Hans Hagen]

David Arnold wrote:

> All,
>
> In mp-grid.mp, I find this definition:
>
> def hlingrid (expr Min, Max, Step, Length, Width) text t =
>   image ( for i=Min step Step until Max+grid_eps :
>     draw (origin--(Width,0)) shifted (0,i*(Length/Max)) t ;
>   endfor ; ) ;
> enddef ;
>
> See the text t at the end of the first line? Can someone tell me what  
> that does and can I have a small example of its use?

t (text) is anything upto the ;

so you can use it to pass things like 'withcolor red' and so

Hans