[mapserver-users] mapcache: background color

[Daniele Debernardi]

Thanks, it worked!

Now I'm trying to solve the same problem on png output,
if a request is outside the extent it will return a trasparent png, and 
that is ok,
when I request a tile that is half-in and half-out the extent, the 
half-out part
should be transparent instead of white.

Any suggestion on how to solve this?

Daniele




On 27. 12. 12 12:03, thomas bonfort wrote:
> imageio_jpeg.c, around line 200: also extract alpha along with 
> red,green,blue. if alpha=0, set pixptrs to 255 instead of *r,*g,*b.
>
> --
> thomas
>
>
> On Thu, Dec 27, 2012 at 11:36 AM, Daniele Debernardi 
> <daniele at geosar.ch <mailto:daniele at geosar.ch>> wrote:
>
>     Hi,
>     I tried with your suggestion to use a mixed image format but with
>     unsuccessful results.
>     For my case I just need to force that black background color to
>     white, is there anyplace in
>     mapcache code where I can change it?
>
>     Any suggestion on which part of the code I have to look would be
>     enough.
>
>     Thanks,
>     Daniele
>
>
>     On 19. 12. 12 12:47, thomas bonfort wrote:
>>     Daniele,
>>     The background color isn't configurable, although that could
>>     become a configurable option with a bit of funding. Your other
>>     option might be to use a "mixed" image format, which will use
>>     JPEG compression for complete tiles, and png with a transparent
>>     background for tiles that are half-in/half-out.
>>
>>     regards,
>>     thomas
>>
>>
>>     On Wed, Dec 19, 2012 at 12:26 PM, Daniele Debernardi
>>     <daniele at geosar.ch <mailto:daniele at geosar.ch>> wrote:
>>
>>         Hi,
>>         there is a possibility to change the background color of the
>>         area outside of the extent of the cache
>>         when the tile is merged toghether?
>>
>>         example:
>>         when i request a tile with an extent that is half outsite the
>>         map extent and half inside, mapcache generates
>>         a tile with the half outsite of the map with black background
>>         and i would like to change it to white.
>>
>>         Thanks in advance
>>
>>
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>>
>>
>
>

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