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 Post subject: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 10:56 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 2603 times ]

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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 11:09 am  (#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 11:29 am  (#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?

It does me no injury for my neighbor to say there are twenty gods or no God.
it neither picks my pocket nor breaks my leg.

"THOMAS JEFFERSON, notes on Virginia, 1782"


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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 11:41 am  (#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 2567 times ]

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Last edited by Draconian on Tue Dec 13, 2011 11:45 am, edited 1 time in total.
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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 11:43 am  (#5) 
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Much! :)
Great job on it Draconian.

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

It does me no injury for my neighbor to say there are twenty gods or no God.
it neither picks my pocket nor breaks my leg.

"THOMAS JEFFERSON, notes on Virginia, 1782"


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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 11:54 am  (#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 12:29 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 2544 times ]
Crystal Energy.jpg
Crystal Energy.jpg [ 418.71 KiB | Viewed 2544 times ]
droideka_gfx_by_ellisn00b-d48zm67.png
droideka_gfx_by_ellisn00b-d48zm67.png [ 344.76 KiB | Viewed 2544 times ]

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 Post subject: Re: Glass Ball using Map Object to Sphere
PostPosted: Tue Dec 13, 2011 12:37 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 12:51 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 1:12 pm  (#10) 
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Definitely a very cool thread Drac. Thanks to the real-world example to bkh. :)

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