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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 1:37 am  (#21) 
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I love revisiting your tutorials, OMG. I learn from them. This helps to keep something embedded in my old brain! Tried to expand on your teachings.
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Vase.jpg
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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 1:42 am  (#22) 
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Very Nice Pat!

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 1:52 am  (#23) 
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Pat625 - thank you Pat; for all us seniors it is important to keep that 'old brain' active.

Jazzon - as an old programmer from the 60s/70s I have been following your posts in the Gimp Scripts section; everything seems so far from the days when in assembler we had to multiply/divide by using 'long left/right shift' and only had 4K for programs to work in. Even had to code 'overlays' from mag tape as there were no disks then either!!

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 2:14 am  (#24) 
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Pat, you did a nice input. I love specially the colours you used and its combination. :coolthup :bigthup :gimp

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 2:42 am  (#25) 
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sorry to say this, Pat, but that vase simply can't exist.
You did not take care of the many discussions with OMG about perspective.
Ask him or look for articles/books on perspective ...
It's my weakness: I can't see those kind of "mistakes" without intervening, even in a somehow rude way, please forgive me....

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 10:25 am  (#26) 
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Jazz on, OMG, Issabella: Thank you for your comments.
Dinasset: I really don't understand perspective other than close or far away. I just looked at a lot of pictures on public domain and the ones I have, and chose a shape to replicate. I have a very old vase of my Grandmother's with that basic shape, I just made the bottom wider and did not make the lid for it.


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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 10:45 am  (#27) 
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Pat, take a picture of that vase you have: you will see on the photo that the curvature of the upper part is much more "flatten", i.e. an oval with the vertical dimension much smaller than the horizontal one, as opposed to the bottom where the curvature (you will see only one half of it) looks closer to a circle: look also at the other examples posted in this same thred.

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 11:00 am  (#28) 
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to give you an idea, I took your outcome, created a transparent layer on top and draw two ellipsis corresponding approx at what you will see in the photo
Attachment:
PAT-Vase-with-perspective-top-bottom-curcature.jpg
PAT-Vase-with-perspective-top-bottom-curcature.jpg [ 678.59 KiB | Viewed 1863 times ]


beware, it's a quick draw, not perfect, only to show you how circles appear when close to the horizon (top) or far from it; in other cases, when the top part lies exactly on the horizon line, you get only a straight line, in others, when the top part is higher, you will see the curvature in the opposite sense (you see only the external part of the vase, not the internal).

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 11:11 am  (#29) 
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..and, simulating a paint (badly done, I'm not at all a digital painter, sorry)
Attachment:
PAT-Vase-with-perspective-roughly-painted.jpg
PAT-Vase-with-perspective-roughly-painted.jpg [ 717 KiB | Viewed 1861 times ]

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 11:27 am  (#30) 
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a useful link free lessons

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 11:35 am  (#31) 
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Are you looking at the vase as if laying down in a box or hanging on a wall as if in a frame?


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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 11:48 am  (#32) 
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tell me what you wanted to show...

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 11:56 am  (#33) 
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...and define your horizon

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 1:39 pm  (#34) 
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dinasset Quit poking the lady! ;)

OMG: Lol right ! I hated the old tape drives. My coding began in the early 80s on the C=64, the PET, VIC-20 and TI99-4A. I even got to work on a DEC PDP J-11 (ancient mainframe from Digital Electronics Corp). Back then "tar" actually was a coding concept for serial data reading, as well as program for doing it! BTW, check your PMs.

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Thu Feb 04, 2016 10:46 pm  (#35) 
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Jazzon: Thank you for coming to my rescue but I am not offended by constructive criticism, although Dinasset could be more subtle. He even acknowledges that. So, no harm, no foul! I am learning something that I didn't know before.

Dinasset: Thank you for the articles that you suggested. OMG: gave me one also. Some make sense to me, and some I must study. I will give it all another try.


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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Mon Feb 08, 2016 9:39 pm  (#36) 
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Attachment:
Vase 2.jpg
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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Mon Feb 08, 2016 10:15 pm  (#37) 
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Pat625 - hey Pat that is a very colourful vase; seems to have a Japanese influnce.

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Mon Feb 08, 2016 11:28 pm  (#38) 
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Thank you, OMG. Chinese influence actually. I had a Chinese sister in law for many years. She favored that type of design!


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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Tue Feb 09, 2016 12:29 am  (#39) 
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excellent, Pat !
Nice colours, nice colour combination and exact frontal perspective.
Congrats !

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 Post subject: Re: Shaped Glass Vase Tutorial
PostPosted: Tue Feb 09, 2016 2:19 am  (#40) 
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Thank you very much. I found the articles very helpful. Also, my husband gave me his opinions. He knows perspective (five years of mechanical drawing).


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