Region rendering

radiance-general
1

Hello,

Is there any way with rpict to render a specific rectangular region/crop of a view? Example: have a view specified, and only render the top left quadrant? I checked the man page for rpict, but i could not come up with anything.

Cheers,
Aksel

···

--

Aksel Groß
Dipl.Ing.Arch.
Dipl.Szeno.

Electric Gobo
Schönhauser Allee 182
10119 Berlin, Germany

[email protected]
T +49 30 559 531 75
M +49 179 394 30 92

2

Hi Askel,
You need to adjust the view to do this. Use -vl an -vs to lift and shift
the view to the upper left and then reduce -vh and -vv accordingly.
Andy

···

On Wed, Sep 26, 2012 at 11:24 AM, Aksel Groß <[email protected]> wrote:

Hello,

Is there any way with rpict to render a specific rectangular region/crop
of a view? Example: have a view specified, and only render the top left
quadrant? I checked the man page for rpict, but i could not come up with
anything.

Cheers,
Aksel

--

Aksel Groß
Dipl.Ing.Arch.
Dipl.Szeno.

Electric Gobo
Schönhauser Allee 182
10119 Berlin, Germany

[email protected]
T +49 30 559 531 75
M +49 179 394 30 92

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

3

Hi Andy,

Thanks! In fact i thought of that for a second, but wasnt aware the shift would work without a distort. I was worried the ie top left and top right part of an image would not fit seamlessly anymore after shifting. But will give it a try now that you recommend it.

Aksel

···

Am 26.09.2012 um 20:34 schrieb Andrew McNeil <[email protected]>:

Hi Askel,
You need to adjust the view to do this. Use -vl an -vs to lift and shift the view to the upper left and then reduce -vh and -vv accordingly.
Andy

On Wed, Sep 26, 2012 at 11:24 AM, Aksel Groß <[email protected]> wrote:

Hello,

Is there any way with rpict to render a specific rectangular region/crop of a view? Example: have a view specified, and only render the top left quadrant? I checked the man page for rpict, but i could not come up with anything.

Cheers,
Aksel

--

Aksel Groß
Dipl.Ing.Arch.
Dipl.Szeno.

Electric Gobo
Schönhauser Allee 182
10119 Berlin, Germany

[email protected]
T +49 30 559 531 75
M +49 179 394 30 92

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

4

You have to carefully determine the -vh and -vv parameters, there's a bit
of trigonometry to be done. But it does work, I've rendered many image
tiles using this method.

Andy

···

On Wed, Sep 26, 2012 at 11:42 AM, Aksel Groß <[email protected]> wrote:

Hi Andy,

Thanks! In fact i thought of that for a second, but wasnt aware the shift
would work without a distort. I was worried the ie top left and top right
part of an image would not fit seamlessly anymore after shifting. But will
give it a try now that you recommend it.

Aksel

Am 26.09.2012 um 20:34 schrieb Andrew McNeil <[email protected]>:

Hi Askel,
You need to adjust the view to do this. Use -vl an -vs to lift and shift
the view to the upper left and then reduce -vh and -vv accordingly.
Andy

On Wed, Sep 26, 2012 at 11:24 AM, Aksel Groß <[email protected]> wrote:

Hello,

Is there any way with rpict to render a specific rectangular region/crop
of a view? Example: have a view specified, and only render the top left
quadrant? I checked the man page for rpict, but i could not come up with
anything.

Cheers,
Aksel

--

Aksel Groß
Dipl.Ing.Arch.
Dipl.Szeno.

Electric Gobo
Schönhauser Allee 182
10119 Berlin, Germany

[email protected]
T +49 30 559 531 75
M +49 179 394 30 92

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

5

Andy, that is exactly what i wondered - thanks a lot for your answer.

Aksel

···

Am 26.09.2012 um 20:55 schrieb Andrew McNeil <[email protected]>:

You have to carefully determine the -vh and -vv parameters, there's a bit of trigonometry to be done. But it does work, I've rendered many image tiles using this method.