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 Post subject: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 11:56 am  (#1) 
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I probably should have spent more time getting a better newsprint image to work with but I was anxious to give something a try. After using this method for making a magnifying glass, I thought I might try something different.

1. Using several layers of gradients to create the shading, I created a ball and then reduced the opacity to about 25 or 30 %, added a colored mask, made a gloss layer, a glow layer and a shadow layer.
2. I duped the shadow layer, reduced the layer scale, and used Iwarp to deform the inner portion. I then deleted the extraneous overlapping areas and the areas outside the ball to make it look like a distorted reflection.
3. I duped the newsprint layer and rectangle selected an area about 200% of the size of the orb and copied it to a new image and applied Map to Sphere with no light and transparent background.
4. I copied this sphere layer to the original image and pasted as a new layer. It appears that the Map to Sphere operation has to be done separately from the original image layers.
5. Since I haven't discovered the exact formula for sizing the original selection, I had to play with the "sphere" layer to get it just the right size, then placed the layer below the orb layers.

There was a lot of trial and error so please forgive me if this doesn't resemble a real tutorial, but I thought it was worth sharing.


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glass Ball.jpg
glass Ball.jpg [ 375.9 KiB | Viewed 2290 times ]

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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 12:09 pm  (#2) 
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Really nice, will have to try this.


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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 12:29 pm  (#3) 
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Pretty cool simulation of a glass 3-D ball.

The shadow inside the ball doesn't look right to me though.Seems too distorted.Maybe even too big?
Or perhaps dimming it a bit will make it seem more realistic?

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OK, . . . . so what's the speed of dark?


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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 12:41 pm  (#4) 
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Now that you mention it, I have to agree. I warped the inner shadow a little more to smooth it a bit and make it more subtle, and also matched the 25% opacity of the ball. Better?

I attached the xcf file. You're more than welcome to fool around with it if you like. Any other comments are most welcome.


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glass Ball.xcf [3.57 MiB]
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glass Ball.jpg
glass Ball.jpg [ 375.24 KiB | Viewed 2254 times ]

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Last edited by Draconian on Tue Dec 13, 2011 12:45 pm, edited 1 time in total.
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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 12:43 pm  (#5) 
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Much! :)
Great job on it Draconian.

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OK, . . . . so what's the speed of dark?


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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 12:54 pm  (#6) 
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Wow! Draco that's cool!

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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 1:29 pm  (#7) 
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Thank you for the kind words. I find it really amazing that tutorials and effects I struggled with and gave up on just one year ago, seem to be much less of a struggle now. Still have a long way to go to get to that level of realism that elicit's the "wow" factor in all who see it. Someday I'll get a wild hair and learn inkscape, blender and other programs that can create images like these.....


Attachments:
frozen_heart_wallpaper_3d_models_3d_wallpaper_58.jpg
frozen_heart_wallpaper_3d_models_3d_wallpaper_58.jpg [ 75.93 KiB | Viewed 2231 times ]
Crystal Energy.jpg
Crystal Energy.jpg [ 418.71 KiB | Viewed 2231 times ]
droideka_gfx_by_ellisn00b-d48zm67.png
droideka_gfx_by_ellisn00b-d48zm67.png [ 344.76 KiB | Viewed 2231 times ]

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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 1:37 pm  (#8) 
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I got ninja'd several by several people while taking the pictures below. :ninja

A solid glass ball is a very, very short focal length lens. The objects on the other side are either extremely magnified (very close) or inverted and miniature (distant). I would not expect to see the shadow through the ball.

Here is a picture of a solid quartz sphere on an oak floor. Quartz has a higher refractive index than glass, so the effect is more extreme. The dark layer on the bottom is actually from the far wall of the room.
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This is a "glass" (probably Pyrex) bead I found in a kitchen drawer.
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Rod - the speed of dark is the same as the speed of light. Otherwise fiber-optic transmission cables wouldn't work.

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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 1:51 pm  (#9) 
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Wow, thanks for taking the time to do that, bkh!

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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 2:12 pm  (#10) 
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Definitely a very cool thread Drac. Thanks to the real-world example to bkh. :)

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