Can Imagemagick create a "paper globe"?

Questions and postings pertaining to the development of ImageMagick, feature enhancements, and ImageMagick internals. ImageMagick source code and algorithms are discussed here. Usage questions which are too arcane for the normal user list should also be posted here.
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jumpjack
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Can Imagemagick create a "paper globe"?

Post by jumpjack » 2016-07-11T23:40:42-07:00

Would it be possible to instruct Imagemagick to build one of these projections starting from an equirectangular one?
Image

Image

I tested several programs, but I could only find programs that just create standard "lobes", with no "pole discs" for easy alignment.
Using a "flower petal" projection would make building a globe much easier.
Alternatively, adding "pole discs" would make alignment much easier.

snibgo
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Re: Can Imagemagick create a "paper globe"?

Post by snibgo » 2016-07-12T05:30:52-07:00

Yes, it would be possible.

Most map projections can be converted into each other with a bit of maths. The hard part is working out the maths.
snibgo's IM pages: im.snibgo.com

jumpjack
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Re: Can Imagemagick create a "paper globe"?

Post by jumpjack » 2016-07-12T09:28:21-07:00

"Excuseme, do you know what time is it?"
"Yes, I know".

snibgo
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Re: Can Imagemagick create a "paper globe"?

Post by snibgo » 2016-07-12T10:26:51-07:00

Yes, I'm afraid that's the answer. IM doesn't have projections built-in. Would it be possible to instruct IM to do them? Yes.
snibgo's IM pages: im.snibgo.com

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