Acorn Art Thread

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pixelblip
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Re: Acorn Art Thread

Postby pixelblip » Sat Nov 18, 2017 6:20 am

Lunar 7
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Re: Acorn Art Thread

Postby pixelblip » Sat Nov 18, 2017 10:14 am

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Re: Acorn Art Thread

Postby pixelblip » Sun Nov 19, 2017 1:48 pm

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Re: Acorn Art Thread

Postby pixelblip » Sun Nov 19, 2017 4:36 pm

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Re: Acorn Art Thread

Postby pixelblip » Tue Nov 21, 2017 8:57 pm

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Re: Acorn Art Thread

Postby pixelblip » Thu Nov 23, 2017 8:43 pm

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FourthStone
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Re: Acorn Art Thread

Postby FourthStone » Thu Nov 23, 2017 9:54 pm

Interesting to see what is capable from the beeb :-)

How are you doing the mode 7 screen pixelblip?

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Re: Acorn Art Thread

Postby pixelblip » Thu Nov 23, 2017 10:42 pm

I am using a program called Cebratext Fourthstone.
It's an old teletext art program I recently found.

I've not done any teletext art before like this.
It is interesting as the severe limitations of it make me think differently.

Teletext is so bold and distinct. It has it's own look for sure. :)

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Re: Acorn Art Thread

Postby guesser » Thu Nov 23, 2017 10:50 pm

apt.png
dennis.png

<plug alert> I use http://zxnet.co.uk/teletext/editor </plug alert>

:D

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Re: Acorn Art Thread

Postby pixelblip » Thu Nov 23, 2017 11:03 pm

Those are colourful and bold guesser!

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Re: Acorn Art Thread

Postby SimonSideburns » Thu Nov 23, 2017 11:42 pm

Yes, very nice MODE 7 pictures.

Here's another of mine. Christmas Candle.

Christmas Candle.png
I'm writing a game where you can change your character from a Wizard to a monkey to a cat.

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Re: Acorn Art Thread

Postby guesser » Fri Nov 24, 2017 1:09 am

pixelblip wrote:Those are colourful and bold guesser!


Thanks, I think I'm getting the hang of it now. :)

I don't want to flood the thread with too many pics all at once but here's another couple of recent ones where I experimented with separated mosaics for dithering.

warpcore.png
BASIC.png

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Re: Acorn Art Thread

Postby pixelblip » Fri Nov 24, 2017 6:44 am

These pics are great from both of you. Very abstract and interesting...esp last one.. Nice too see.Your candle is festive Simon.
What programs are you doing them in....
I've yet to find a good mode 7 drawing package for painting and and easy conversion. Editrtf is ok but I wanted a more paintish program. Any suggestions welcome.

Thanks
Last edited by pixelblip on Fri Nov 24, 2017 4:36 pm, edited 1 time in total.

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Re: Acorn Art Thread

Postby guesser » Fri Nov 24, 2017 11:31 am

The trouble with teletext/mode 7 is that it's intrinsically character based so trying to abstract that away from the user is difficult to say the least. Both my editor and edit.tf support mousedraw but personally I don't find that useful at all as if feels like I have less precise control of where a pixel will end up.

In terms of conversion do you mean getting files into a format the beeb likes, or actual image conversion? I was thinking I should probably add a proper beeb specific export format. What should that be, it's something like control codes have 0x80 added and double height rows are duplicated right?

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Re: Acorn Art Thread

Postby pixelblip » Fri Nov 24, 2017 4:37 pm

Can I ask what editor do you use guesser (for mode 7 ) - you say edit.rf - what's the other one please?

Conversion..........I wasn't really thinking here.....most of them save in a mode 7 format (teletext editors) so sorry to confuse...........I was just wondering how people save teltext and get it into a jpeg / png. Also wondering if there's an editor that coverts JPG to mode 7 easily ( without command line )
Thanks

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Re: Acorn Art Thread

Postby guesser » Fri Nov 24, 2017 5:13 pm

I posted the link to my editor below the fire engine :)
http://zxnet.co.uk/teletext/editor

The standard format in the teletext community for saving teletext as files is the .tti page format to use with the vbit2 teletext inserter on the raspberry pi. Some people also make EP1 files using Softel Flair (old commercial editor that the broadcasters use).

For sharing pages around we've all pretty much standardised on the http://edit.tf URL format, which I have added backwards compatible extensions to.
Both edit.tf and my editor can export some form of 1kB binary memory dump, though not import it again. It's best to save work by saving the URL string (i.e. bookmark it!) as any conversion loses data or has no easy path to get it back into the editor again.

The images I posted are all straight from my editor's png export facility.

I only know of kieran's converter to go from images to text.

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Re: Acorn Art Thread

Postby pixelblip » Sat Nov 25, 2017 8:21 pm

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Re: Acorn Art Thread

Postby SimonSideburns » Sat Nov 25, 2017 10:45 pm

I just displayed the file in the edit.tf website then used an old version of Paint Shop Pro to grab the screen then crop it to the teletext window.

Not very good (and I didn't know that the edit.tf site had an export image option).
I'm writing a game where you can change your character from a Wizard to a monkey to a cat.

Well, Imogen that!

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Re: Acorn Art Thread

Postby SimonSideburns » Sat Nov 25, 2017 10:52 pm

Here's a couple more (I've realised you can right-click on the teletext area of the edit.tf site and save image, but for some reason they come out square):

North Pole:
North Pole.png


Stockings:
Stocking on wall.png


Grinch:
The Grinch.png


House and snow:
House snow.png
I'm writing a game where you can change your character from a Wizard to a monkey to a cat.

Well, Imogen that!

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Re: Acorn Art Thread

Postby crj » Sat Nov 25, 2017 11:12 pm

guesser wrote:The standard format in the teletext community for saving teletext as files is the .tti page format to use with the vbit2 teletext inserter on the raspberry pi.

Gosh. I've not designed any teletext graphics in many decades, but back in the day the standard format was a Viewdata character stream - it was slightly more compact for sparse pages, and you could achieve crude animation effects as you drew the page.

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Re: Acorn Art Thread

Postby guesser » Sat Nov 25, 2017 11:23 pm

SimonSideburns wrote:Here's a couple more (I've realised you can right-click on the teletext area of the edit.tf site and save image, but for some reason they come out square


Yeah it's because that saves the contents of the HTML5 canvas which in edit.tf is stretched to the correct aspect ratio by its HTML style.

I get round that in my editor by re-rendering the page onto a hidden canvas of the correct aspect ratio for the png export function.

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Re: Acorn Art Thread

Postby guesser » Sat Nov 25, 2017 11:35 pm

crj wrote:Gosh. I've not designed any teletext graphics in many decades, but back in the day the standard format was a Viewdata character stream - it was slightly more compact for sparse pages, and you could achieve crude animation effects as you drew the page.

For Prestel? There's a web based viewdata editor somewhere but I can't find the link now.

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Re: Acorn Art Thread

Postby guesser » Sat Nov 25, 2017 11:40 pm

Following on from the APT-E I'm continuing a series of locomotives.
deltic.png

class91.png

class37.png

class52.png

There are enough different types that I can carry on doing this until everyone gets completely sick of teletext trains :lol:

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Re: Acorn Art Thread

Postby tricky » Sun Nov 26, 2017 12:04 am

Nice loco's, any steam?

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Re: Acorn Art Thread

Postby guesser » Sun Nov 26, 2017 12:53 am

tricky wrote:Nice loco's, any steam?

Steam locos have a lot of curves and little shiny detailed bits though...
I may have a crack at some though as I'm gaining confidence in my teletexting. :)

Edit: Will this do? :)
A4.png

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Re: Acorn Art Thread

Postby tricky » Sun Nov 26, 2017 10:22 am

Wow, nice.
I can't tell if it is supposed to be Mallard or Sir Nigel Greasley ;)
Sometimes they have smoke too, but probably only above the loco where the colour clash won't get in the engineers eyes.

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Re: Acorn Art Thread

Postby guesser » Sun Nov 26, 2017 2:14 pm

tricky wrote:Wow, nice.
I can't tell if it is supposed to be Mallard or Sir Nigel Greasley ;)
Sometimes they have smoke too, but probably only above the loco where the colour clash won't get in the engineers eyes.


Sir Nigel, and there's no smoke because its parked up in front of the engine shed at Grosmont which has been expertly removed from the photograph digitally :lol:

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Re: Acorn Art Thread

Postby Pernod » Sun Nov 26, 2017 3:18 pm

tricky wrote:I can't tell if it is supposed to be Mallard or Sir Nigel Greasley ;)

Definitely Gresley, as Mallard has streamlined valances.
- Nigel

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Re: Acorn Art Thread

Postby pixelblip » Sun Nov 26, 2017 5:45 pm

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Re: Acorn Art Thread

Postby kieranhj » Mon Nov 27, 2017 2:02 pm

guesser wrote:Following on from the APT-E I'm continuing a series of locomotives.

There are enough different types that I can carry on doing this until everyone gets completely sick of teletext trains :lol:

On a slight aside, I wondered if you might be interested in "emulating" / "approximating" the Teletext 2.0+ spec on a Beeb using Video NULA? I have no idea about the specs beyond the fact that you can use orange :D but you can certainly tweak the MODE 7 palette using the RobC's wonderful add-on.
Bitshifters Collective | Retro Code & Demos for BBC Micro & Acorn computers | https://bitshifters.github.io/


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