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  • "Douglas Rhiner" started this thread

Posts: 89

Location: Fairfax, CA

Occupation: Code-Slave

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1

Friday, March 4th 2011, 4:48am

GD script for web/server creation of images

What would be really cool is if we had the ability to have a web-based set of krpano Tools / scripts.

Upload an image, leverage the scripting, and out comes the 6 faces and preview.

Zephyr

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Posts: 994

Location: Netherlands

Occupation: Web developer

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2

Friday, March 4th 2011, 1:37pm

you could use php exec function? http://php.net/manual/en/function.exec.php
that droplets of krpano support command line
3d childrens game using krpano Game
Minify your xml with my krpano XML Compressor
Krpano XML Parsing Error Checklist
Available for hire (krpano xml, javascript, actionscript, flash, php and ipad plugins).

3

Friday, April 8th 2011, 11:33am

I experimented with using imagemagick to convert from spherical to cubic, but found that the performance was severely lacking in comparison to the krpano tools. Here's an example, extracting the top face from an equirectangular:

Source code

1
convert equirectangular.jpg ( +clone -set option:distort:viewport %%[fx:w/PI]x%%[fx:w/PI]+%%[fx:(w-w/PI)/2]+%%[fx:(h-w/PI)/2] -distort SRT 0 ) +swap -interpolate bicubic -fx "xx=i/w-.5;yy=j/h-.5;ofs=(xx<0)?.5:1.5;pan=(yy==0)?ofs*pi:atan((xx)/(yy))+2*pi;pan=mod((yy>0)?pan+pi:pan,2*pi);tlt=(xx==0&&yy==0)?0:mod(-atan(.5/hypot(xx,yy))+pi/2,pi);v.p{ pan*v.h/pi, tlt*v.h/pi}" out.png