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refractive distortion question updated with pics


oma

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Have you tried playing with lens, tube, water reflection, etc.?

 

The Doctor: There was a goblin, or a trickster, or a warrior... A nameless, terrible thing, soaked in the blood of a billion galaxies. The most feared being in all the cosmos. And nothing could stop it, or hold it, or reason with it. One day it would just drop out of the sky and tear down your world.
Amy: But how did it end up in there?
The Doctor: You know fairy tales. A good wizard tricked it.
River Song: I hate good wizards in fairy tales; they always turn out to be him.

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Ok hint for you all I'm working on my first tut ever but I'm stuck at this refractive distortion stage.

have worked out how to turn the bottom opaque arrow of picture 1 into glass see the larger arrow

on same picture

startofglasstut.jpg

now the refractive distortion is the graph under neath like in this illustration by Tom Stimpson.

TomStimpsonillustration.png

help me out here I just can't figure out how to do this.

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what you could do (I am too lazy to do) is cut out what is going to be distorted, paste onto new layer, center, bulge/lens, place to original place, merge layers. If only bulge worked on the selection.

chalksig2-1.png
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The lines won't line up perfectly in real life anyway. There is an edge around the glass that "hides" or blurs the line connections from the eyes. You brain fills in what it thinks is supposed to be there.

sunsigub8.png
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thats not light refraction its image distortion due to thr refractive qualities of looking at glass ,accomplished with mild dents or sine waves or a combination of several distortive plug ins. and that bottle isnt true to life distortion either since it doesnt warp around the refractive glass areas.

retired from PDN forums. Later dewds

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It does look like it's just done hoping for the best results. You can't really distort things like that easily, because it changes for every picture. What you'd need for this would be a plug-in that detects edges (transparent VS opaque), then lets you choose the altitude you want, and distorts according to that. I'm not sure I'm being clear :|

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