Spherical projection: grid for creating panoramic images

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Spherical projection: grid for creating panoramic images

Postby slowtiger » Sun Oct 13, 2013 7:13 pm

Finally I've updated to 9.5, mainly because of the cylindrical/spherical projection abilities. I want to draw backgrounds which work within this device, and I needed a grid to do that. Here it is, use it for your own purposes.

Image
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Re: Spherical projection: grid for creating panoramic images

Postby jahnocli » Mon Oct 14, 2013 11:14 am

Thanks, slow.
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Re: Spherical projection: grid for creating panoramic images

Postby hayasidist » Mon Oct 14, 2013 1:35 pm

That's really helpful! Did you just draw that by eye, or ...
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Re: Spherical projection: grid for creating panoramic images

Postby slowtiger » Mon Oct 14, 2013 2:35 pm

Well of course - I've got the perfect eye!

Nope. I found a very small example on the net, scaled it up and drew clean lines in PS over it.
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Re: Spherical projection: grid for creating panoramic images

Postby hayasidist » Mon Oct 14, 2013 2:51 pm

:D -- I would have believed you if you said you had drawn it!! :wink: Thanks!
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Re: Spherical projection: grid for creating panoramic images

Postby rocky53204 » Tue Oct 15, 2013 12:41 am

Look forward to seeing one of your backgrounds!
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Re: Spherical projection: grid for creating panoramic images

Postby slowtiger » Tue Oct 15, 2013 12:22 pm

OK, I'm nearly finished with the current project, so I allowed myself some play. Here's a first BG sketch over the grid just to see how it works. Load this into your AS 9.5, select "Script > Image > Spherical Panorama", select camera pan tool (7), play around. Hit cmd-J for nicer experience.

Image

It works pretty fair in horizontal pans, but if you go to zenith or nadir you'll see the glitches. The room is a bit small for my taste, next time I'll do better. The lines of desk and floor are not 100% straight, but I think that's OK within this style.

The bookshelf in the back is something I did quite a while ago and re-used it already in different projects. Import the image into TVPaint and use the warp grid with some good resolution, I used 7 horizontal and 6 vertical points. Select columns of points first (marquee select) to shift horizontally in place. Then place the points so the connecting lines meet or follow the grid lines.

Maybe I'm a bit obsessed with the clear lines, a more painterly approach could be better. Looking forward what others do with this!
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Re: Spherical projection: grid for creating panoramic images

Postby JCook » Tue Oct 15, 2013 1:14 pm

This is brilliant. Thanks for sharing this, slowtiger. What a great tool.

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Re: Spherical projection: grid for creating panoramic images

Postby Víctor Paredes » Tue Oct 15, 2013 1:39 pm

Wow, thanks!
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Re: Spherical projection: grid for creating panoramic images

Postby slowtiger » Sun Oct 20, 2013 5:25 pm

I corrected the grid and now it's much better around zenith and nadir, with straighter lines. Not perfect, but good enough for hand drawn backgrounds. Here's the revised version:

Image

Let's see what you do with it!
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Re: Spherical projection: grid for creating panoramic images

Postby chucky » Tue Oct 22, 2013 9:03 am

Thanks so much for sharing this Slowtiger.
I know I shall be be needing this one sooner than later. :D
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Re: Spherical projection: grid for creating panoramic images

Postby slowtiger » Tue Oct 22, 2013 9:31 am

Have a look at this test:

and notice the imprvements on the desk's bottom.
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Re: Spherical projection: grid for creating panoramic images

Postby chucky » Tue Oct 22, 2013 12:05 pm

Pretty amazing ST, funny the shelves don't match the construction as masterfully as the less detailed parts.
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Re: Spherical projection: grid for creating panoramic images

Postby slowtiger » Tue Oct 22, 2013 12:32 pm

That's because it's just a warped front view (showing the backs only) so far, without the covers being added. I already used this in other projects and it's quite convincing once the missing parts are drawn.
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Re: Spherical projection: grid for creating panoramic images

Postby chucky » Tue Oct 22, 2013 12:46 pm

No worries , work in progress, I see. :D
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