### Author Topic: Fractal Fun  (Read 17828 times)

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#### Lee Mac

• Seagull
• Posts: 12514
• London, England
##### Re: Fractal Fun
« Reply #15 on: November 17, 2009, 11:26:57 AM »
Nice one James!

If you want to add a colour shift, so that it doesn't use the standard Magenta's, Yellows etc, add it like this:

Code: [Select]
`(pnt (list x y) (1+ (rem [color=red](+[/color] i [color=red]60)[/color] 255)))))`
You can add whatever number you like to shift the colour set by that amount

#### JCTER

• Guest
##### Re: Fractal Fun
« Reply #16 on: November 17, 2009, 11:43:43 AM »
Nice one James!

If you want to add a colour shift, so that it doesn't use the standard Magenta's, Yellows etc, add it like this:

Code: [Select]
`(pnt (list x y) (1+ (rem [color=red](+[/color] i [color=red]60)[/color] 255)))))`
You can add whatever number you like to shift the colour set by that amount

ooohhhh you beat me to my next experiment... I was hoping to see if I could manipulate the color to get a more standard range.

My next thought is to see about using RGB color instead of ACI color, though I'm not sure how to specify it... I imagine if I wanted a "monochromatic" output, it'd be a static number for either RG -or- B, and then a range for the remaining two colors, making sure they're equal, for example:

120,250,120
120,225,120
120,200,120
120,175,120

and so forth.

That'd take me some researchin' though, but I'm sure someone's already done this part, out there in the net.  But I'll be out of the office for lunch today so it'll have to be after work.

• Guest
##### Re: Fractal Fun
« Reply #17 on: November 17, 2009, 01:25:28 PM »
someone make a routine to make these fractal beasts!
http://www.skytopia.com/project/fractal/2mandelbulb.html

#### JCTER

• Guest
##### Re: Fractal Fun
« Reply #18 on: November 17, 2009, 02:05:25 PM »
someone make a routine to make these fractal beasts!
http://www.skytopia.com/project/fractal/2mandelbulb.html
The only possible way I could imagine creating a complicated 3d shape is to create a single cross section at a time, creating a closed polyline or the points in order, and somehow getting the software to LOFT them from one to the next without making the software chuck a wobbly... which would be an impossible task for Autocad, lol.  Autocad has been known by me to fart and die over some cross sections with equal # of segments let alone something that may go from 120,000 segments to 250,000 segments and other variations of such gigundous numbers.

However if you take all those closed plines and make them regions instead, so that they are solidly filled when using a 'realistic' visual style, it might make for some neat visuals all the same.

#### Lee Mac

• Seagull
• Posts: 12514
• London, England
##### Re: Fractal Fun
« Reply #19 on: November 17, 2009, 03:23:14 PM »
Wow! those 3D fractals look awesome! But I think it is a task that is too much for AutoCAD to handle somehow...

As for the RGB colour, yes, it could be done - I shall experiment

#### Maverick®

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• Posts: 14778
##### Re: Fractal Fun
« Reply #20 on: November 17, 2009, 03:40:59 PM »

Fail.

#### Lee Mac

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• Posts: 12514
• London, England
##### Re: Fractal Fun
« Reply #21 on: November 17, 2009, 05:39:27 PM »
Ok, using James' idea -

RGB Variations

#### JCTER

• Guest
##### Re: Fractal Fun
« Reply #22 on: November 17, 2009, 05:53:31 PM »
SWEET!!

That's pretty much exactly what I was getting at.

Now I'm going to have to try my hand at duplicating that.

Something tells me you've done it in 2 lines, max, and it'll take me 20+

#### Lee Mac

• Seagull
• Posts: 12514
• London, England
##### Re: Fractal Fun
« Reply #23 on: November 17, 2009, 05:55:15 PM »
3 lines actually

I'll give you a hint, RGB is DXF 420, 32 bit
« Last Edit: November 17, 2009, 06:25:43 PM by Lee Mac »

#### T.Willey

• Needs a day job
• Posts: 5247
##### Re: Fractal Fun
« Reply #24 on: November 17, 2009, 05:58:22 PM »
Now just to get a good printer/plotter, and frame them as modern art, and change \$1000 ( min. ) per.
Tim

I don't want to ' end-up ', I want to ' become '. - Me

#### Lee Mac

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• Posts: 12514
• London, England
##### Re: Fractal Fun
« Reply #25 on: November 17, 2009, 05:59:26 PM »
Now just to get a good printer/plotter, and frame them as modern art, and change \$1000 ( min. ) per.

Haha I wish...

#### Lee Mac

• Seagull
• Posts: 12514
• London, England
##### Re: Fractal Fun
« Reply #26 on: November 17, 2009, 06:06:51 PM »
And a Yellow just for fun

#### T.Willey

• Needs a day job
• Posts: 5247
##### Re: Fractal Fun
« Reply #27 on: November 17, 2009, 06:10:09 PM »
Now just to get a good printer/plotter, and frame them as modern art, and change \$1000 ( min. ) per.

Haha I wish...

Setup a website that people will be able to download them as wall papers, and see what happens.

Sometimes people will just buy something because it is different, and they like to be on the cutting edge.  There is some art out there that is worth money, but to me is worthless, not priceless.  Eye of the beholder ..... and all.
Tim

I don't want to ' end-up ', I want to ' become '. - Me

#### JCTER

• Guest
##### Re: Fractal Fun
« Reply #28 on: November 17, 2009, 06:18:47 PM »
3 lines actually

I'll give you a hint, RGB is DXF 420, 16 bit

I got as far as finding the 420 code.  I'm working on how it converts 255,0,0 to (420 . 16711680)

Then I should be ok

ETA:  using this chart http://easycalculation.com/hex-converter.php now I see what the DXF reference on my desk meant by "hex converted to decimal"

Now the hard part...
« Last Edit: November 17, 2009, 06:29:17 PM by James Cannon »

#### JCTER

• Guest
##### Re: Fractal Fun
« Reply #29 on: November 17, 2009, 06:21:02 PM »