Perlin Noise Map With BGRABitmap
lazarus / 39-Graphics

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Dzandaa · 2026-01-20 17:17

Hi,

Here is a simple terrain generator based on Perlin Noise.

You can save High and Color Map.

B->

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Boleeman · 2026-01-21 00:31

Nice program DZandaa. Love the colourful rendered result.

Just a tiny tweak, with FSEPersistence interval needing to be 0.01 and
not 1
(probably just forgot to change it just like I do).

Is the elevation just saving Perlin map as grayscale?

Thanks for the upload Dazandaa.

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Dzandaa · 2026-01-21 10:49

Hi,

Thank you Eddie,

I didn't notice the, because I never use the Up/Down arrows, just
writing values

The elevation save a graymap from 0 to 255, It is not just the color
map in Gray

I also try to create an Island in the middle of the map, but didn't
succeed.

Now I'm looking to create a  3D representation.



B->

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Boleeman · 2026-01-21 12:36

For the 3D Version you would probably need OpenGL for the 3rd
dimension exploration?
I would also love to see that Glynn fractal in the 3rd dimension.

With your 2D Perlin version I was going to try a touch of motion blur
to soften the edges just very slightly.

Can't get over how noise can create islands."Ken Perlin" was a really
smart guy, being a professor of computer science at New York
University.

Take care friend.

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circular · 2026-02-02 06:47

It is indeed wonderful to create landscapes with randomness.

Oh but wait there is a 3D version now 

https://forum.lazarus.freepascal.org/index.php/topic,73308.0.html