generated height-maps and renders

If you have a design you're proud of, share the cfdg file here. It's also a good place to ask for feedback and collaborate.

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barcud
Posts: 8
Joined: Wed Oct 30, 2013 9:44 am

generated height-maps and renders

Post by barcud »

Here is my attempt of generating a heightmap with ContextFree
CityMap_7cAAIgreys3mini.jpg
CityMap_7cAAIgreys3mini.jpg (95.96 KiB) Viewed 938 times
Using the free height map rendering tool aerialod I rendered this image out of it:
snap2021-07-07-10-31-28mini.jpg
snap2021-07-07-10-31-28mini.jpg (154.25 KiB) Viewed 938 times
The script is a basic subdivision with a bit of overlap and then two loops with a bit of random thrown in to create a bigger picture.

Code: Select all

CF::MinimumSize = 4

startshape big

rsi = 0.46

shape quad
rule {
SQUARE[ s 1.015 b -1]
SQUARE[s 1 b 1 ]
}



shape big
{
    loop 4  [y (0.5+rand(0.8))]big_x[s 1 (1.2+rand(0.5))]
}

shape big_x
{
    loop  4 [x (1+rand(1))] frac[s (1.2+rand(0.58)) 1]
}

shape frac
rule {
    quad[ ] 
    frac [x 0.25 y 0.25  s rsi r -90 b -0.9]  
    frac[ x -0.25 y 0.25  s rsi r 0 b -0.8]
    frac[ x -0.25 y -0.25  s (rsi/2) r 90 b -0.7]
    frac[ x 0.25 y -0.25  s rsi r 90 b -0.6]

}

rule {
    quad[ ] 
    frac [x 0.25 y 0.25  s rsi r -90 b -0.6]  
    frac[ x -0.25 y 0.25  s rsi r 0 b -0.7]
    frac[ x 0.25 y -0.25  s (rsi/2) r 90  b -0.8]
    frac[ x -0.25 y -0.25  s rsi r 90 b -0.9]

}
Enjoy!!
Last edited by barcud on Fri Sep 03, 2021 5:49 am, edited 1 time in total.

shevy
Posts: 8
Joined: Thu Jan 02, 2014 11:59 am

Re: generated height-maps and renders

Post by shevy »

This is pretty cool; it reminds me of RPG maps, like
in Shadowrun.

How did you have this idea? And the follow-up render idea? I never
heard of aerialod before. I assume you must have some experience
with that? It looks a bit like an artistic rendering actually - I saw
somewhat similar renderings done via blender on the old cg-forum
if anyone remembers that...

Edit: The name is city map? I usually look at the gallery first actually
and less so on the forum.

barcud
Posts: 8
Joined: Wed Oct 30, 2013 9:44 am

Re: generated height-maps and renders

Post by barcud »

Aerialod was also a new one for me - it's another free program by the guy who did MagicaVoxel and I follow him on Twitter - that's how I came across it.

I have only recently (re)started with Context Free - I am actually a StructureSynth person - a (sort of) 3D version of CFDG. I had generated some map like thing in Structure Synth and somebody asked if it would be possible to do that in ContextFree so I gave it a go and it worked quite easily.

Using StrucutreSynth I quite often export objects and render them externally so I am quite used to that and using heightmaps is just one of those things that's quite handy for all kind of surface structures in renders and/or when you are doing fractals in Mandelbulb3D.

The "City map" gallery is close but the real code for the map is in the post.

barcud
Posts: 8
Joined: Wed Oct 30, 2013 9:44 am

Re: generated height-maps and renders

Post by barcud »

Here is another heightmap render

The CFDG script is again a basic subdivision and it is grey on black - the whiter the colour get the higher the building

Code: Select all

CF::MinimumSize = 4
CF::Background = [b -1]

startshape big

rsi = 0.4

shape quad
rule {
SQUARE[ s 1.1 b 0.2]
SQUARE[s 1 b -2 ]
}

shape big
{
    loop 8  [y (0.5+rand(0.8))]big_x[s 1 (1.2+rand(0.5)) ]
}

shape big_x
{
    loop  7 [x (1+rand(1))] frac[s (1.2+rand(0.58)) 1 ]
}

shape frac
rule {
    quad[ ] 
    frac [x 0.15 y 0.15  s rsi r -90 b rand(0.1,0.3)]  
    frac[ x -0.25 y 0.25  s rsi r 0 b rand(0.1,0.3)]
    frac[ x -0.25 y -0.25  s (rsi/2) r 90 b rand(0.1,0.3)]
    frac[ x 0.25 y -0.25  s rsi r 90 b rand(0.1,0.3)]

}

rule {
    quad[ ] 
    frac [x 0.25 y 0.25  s rsi r -90 b rand(0.1,0.3)]  
    frac[ x -0.25 y 0.25  s rsi r 0 b rand(0.1,0.3)]
    frac[ x 0.25 y -0.25  s (rsi/2) r 90  b  rand(0.1,0.3)]
    frac[ x -0.25 y -0.25  s rsi r 90 b rand(0.1,0.3)]

}
This results in this heightmap:
CityMap_9b_KYK.jpg
CityMap_9b_KYK.jpg (179.67 KiB) Viewed 469 times
and using the free tool http://ephtracy.github.io/index.html?page=aerialod this results in this render:
CityMap_9b.jpg
CityMap_9b.jpg (194.39 KiB) Viewed 469 times

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