#103 | arc20 – Parametric topography

Hi everyone,

I’ve been working on the slab these days, the dome isn’t finished yet (well, not physically). I am currently printing the structure in 3D and I am quite terrifying in the idea that the model won’t be finished completely because of any sort of issues. But well, let’s hope it will be okay. For now, my self-made printer is at 6% of progression after 1hour and 20min. If it keeps this speed, the printing should be ending after 20 hours. There are some small issues with the 3D pattern for the support, but it is still printing without big problems…


So yeah for the slab, It was a bit hardcore. I tried many things to get good curves into the model. The first thing I tried, was to make an attractor grid and use some sort of contours to group different points in the attractor. However, it was very hard to get an automatical height and you need to change every parameter manually. The second test is also a bit weird. I tried to use the electrical fields and flow to make what I want, but the field keep the meshes messing and some geometry just disappeared without concrete explanations (I still need to understand and figure it out but not now, I don’t really have time for that).

The last test is a bit more useful so far. I just use a gradient that can change colors and height depending on the position of the points and from their distance to each other. When the heatmap is red, it means another point is near it and green, the opposite.

fig.01 – Gradient heat map and variation of the topology curves depending on the distance between points. You can also see the contours showing the same level height. I tried to cut a sphere with the topology slab to show you how it works.
fig.02 – I exported the topology map on the slab and try to get these “hills”. You can also see that I’ve added two more trees in the process, giving this feeling of “trees” or “canopy”. I don’t use the topology maps on the two last trees since I wanted to feel some variation for the ground.
fig.03 – Rendering the topology map on the slab.
fig.04 – Perception from the inside of the dome with the protective shell.  

What did I learn?

  • Gradient and heat map for a topology map.
  • Contours on a surface.
  • Breps cutting, adding and fusion.

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