realtime-2dheihtmap-landscape-flyby-with-deeep-zooming

[gabo11]

hello everyone,

I am pretty new to the topic and developed a small app that calculates the 2d mandelbrot set.

My idea now is to turn the whole thing into 3d as follows:
- flip the mandelbrot set to a heightmap, so that it looks like a canyon
- starting from over the canyon I would like to dive into the wall of the canyon and deep zoom into it
- generate a movie of the whole thing

do you have any suggestions or examples how to do this with ChaosPro or another tool?
is this possible? thank you for your help!

Gabo

[gabo11]

hello, could you please respond me wheter my question was wrong or this hasn't done before?

thank you for your help

[cKleinhuis]

Many programs offer this. But iam not in there

in my eyes an aoproach using dynamic tesselation on a nowadaysdays gpu could work ppreferably
One with double precision

check out fragmentarium for realtime ray marching which could adopted for your needs

generalprocedure without gpu would implement a fast guessing mandelbrot renderer and use this information as heightmap. Recalculated 50 times a second

a gpu can come in handy when translating the points via texture

[David Makin]

hello, could you please respond me wheter my question was wrong or this hasn't done before?

thank you for your help

There are two approaches to this - convert the 2D fractal to a heightmap grid and render as triangles/polygons or create a distance estimation method (that returns spot heights for given locations and from that calculates a distance estimate) for ray marching - the latter is by far the better method if you want realtime results with deep-zooming calculated at runtime, though that's only really feasible both on a GPU and with double accuracy.

[Syntopia]

Fragmentarium already comes with a Mandelbrot heightfield example courtesy of Knighty ("Examples/Knighty Collection/MandelbrotHeightfield.frag"), which can be rendered in real-time. (You need to download and compile the latest Github version to run it)

It will not give you a feeling of flying through a canyon, though. It is more like riding on a stretched rubber surface :-) Don't know why, but the distance estimate used as heightmap for the Mandelbrot seems all too smooth - perhaps a better function could be found. Or perhaps it is a resolution thing as David says - Fragmentarium is single precision only.

Example:

[knighty]

Note that a more eficient approache would be to use cone step mapping instead of "my" method. In fact, being lazy, I just derived a distance estimate that gives a sphere that is always inside the cone. That way I could use syntopia's DE raymarcher without further work.

[gabo11]

Hi Syntopia

The example is pretty much what I am looking for. But I can't find the Knighty Collection in Fragmentarium 0.8. Where did you get the examples from?

Regards
Gabo

[gabo11]

ok, I found them, but it says:

Camera: Use W/S to fly. 1/3 adjusts speed. Q/E rolls. Click on 3D window for key focus. See Help Menu for more.
Could not find :CR
Could not find :CG
Could not find :CB
Could not find :CR
Could not find :CG
Could not find :CB
Could not find :CR
Could not find :CG
Could not find :CB

and it does not generate an image, any idea?

Thank You

[gabo11]

ok, I found all the necessary includes  , I think... but now it says :

Parse: D:/Eigene Dateien/Downloads/Fragmentarium/Heightmap_GOR.frag
Including file: D:/Eigene Dateien/Downloads/Fragmentarium/Examples/Include/DE-Raytracer.frag
Including file: D:/Eigene Dateien/Downloads/Fragmentarium/Examples/Include/MathUtils.frag
Mandelbrot set 2.5D
Default Raytracer (by Syntopia)
Changing camera control to: 3D
Camera: Use W/S to fly. 1/3 adjusts speed. Q/E rolls. Click on 3D window for key focus. See Help Menu for more.
Found 'default' index. Executing...
Could not find: CamLightMin2
Could not find: GlowMax
Could not find :X
Could not find :Y
Could not find :Z
Could not find :R
Could not find :CycleColors
Could not find :Cycles
Could not find :X
Could not find :Y
Could not find :Z
Could not find :R
Could not find :CycleColors
Could not find :Cycles
Could not find :X
Could not find :Y
Could not find :Z
Could not find :R
Could not find :CycleColors
Could not find :Cycles
Copied 1 lines to clipboard
Could not find :X
Could not find :Y
Could not find :Z
Could not find :R
Could not find :CycleColors
Could not find :Cycles
Could not find :X
Could not find :Y
Could not find :Z
Could not find :R
Could not find :CycleColors
Could not find :Cycles
Could not find :X
Could not find :Y
Could not find :Z
Could not find :R
Could not find :CycleColors
Could not find :Cycles

[Syntopia]

Hi,

You shouldn't need any files. The ones that are part of Fragmentarium 0.8 should do. I just tested with a v0.8 version and it seems to work.

What happens if you copy and paste the file from GitHub:
https://raw.github.com/Syntopia/Fragmentarium/master/Fragmentarium-Source/Examples/Knighty%20Collection/MandelbrotHeightfield.frag

into a window, and press the 'Build' button? Also try to click the 'Apply' button (next to the 'Preset: Default') to get some proper settings.

You can ignore the warnings about unused parameters. This is because the script uses some features which are not part of 0.8.

[knighty]

works here with 0.8 version.
What is : D:/Eigene Dateien/Downloads/Fragmentarium/Heightmap_GOR.frag ?

[gabo11]

ok, works now..
but I don't get the heightmap, something seems to be wrong with the presets.

D:/Eigene Dateien/Downloads/Fragmentarium/Heightmap_GOR.frag is the MandelbrotHeightfield.frag

[Syntopia]

Are you sure you are using the right script? (The link above). I don't think there is a 'spacing' variable in it?

Also be sure to set the 'render mode' to automatic.

Does the Mandelbulb render correctly when starting the program?