08-15-2017, 09:31 PM
Hi all,
Does anybody happen to have a neat solution to the following problem, please?
I'm trying to take a circular selection and then map it to a rectangular space - rather like this image
![[Image: starbucks.png]](https://4.bp.blogspot.com/-JYcdCPWV_A0/Vr2D85TjNrI/AAAAAAAAAb8/ifNRbCkV0DE/s1600/starbucks.png)
from Squircles' mapping a circle to a square post, in fact.
(And vice versa - what's the point if you can't get yourself back to where you came from?)
I was investigating the Lighting Effects filter's Environment Map section to see if there wasn't a blog post in it, and found that something similar to the operation I'm now interested in is carried out in selecting the source of the environment map to use. Then I found I couldn't duplicate the effect easily to illustrate the concept, even after tinkering with G'MIC's Deformations/Conformal Maps function, which looked like the sort of thing that might do the trick.
Yes, I could get myself together to understand and write the thing, but I left coding behind a few years ago and I could spend several months teaching myself to Do This Properly in a new language, whereas what I need is to get something written about it sooner than later; if somebody has already invented the wheel (possibly by morphing something square) then it would be of immense help. Can anybody cast some light?
Does anybody happen to have a neat solution to the following problem, please?
I'm trying to take a circular selection and then map it to a rectangular space - rather like this image
from Squircles' mapping a circle to a square post, in fact.
(And vice versa - what's the point if you can't get yourself back to where you came from?)
I was investigating the Lighting Effects filter's Environment Map section to see if there wasn't a blog post in it, and found that something similar to the operation I'm now interested in is carried out in selecting the source of the environment map to use. Then I found I couldn't duplicate the effect easily to illustrate the concept, even after tinkering with G'MIC's Deformations/Conformal Maps function, which looked like the sort of thing that might do the trick.
Yes, I could get myself together to understand and write the thing, but I left coding behind a few years ago and I could spend several months teaching myself to Do This Properly in a new language, whereas what I need is to get something written about it sooner than later; if somebody has already invented the wheel (possibly by morphing something square) then it would be of immense help. Can anybody cast some light?