Poor Mesh Plot from Makie - How to fix it?

[Midez]

Minimal example with a dummy mesh

using Makie, GLMakie, FileIO

msh = load("~/TestMesh.stl")


fig = Figure(resolution = (1920,1080))

axe = Axis3(fig[1, 1])


mesh!(msh, transparency = false, overdraw = false, shading = true)

wireframe!(msh, color = :red, transparency = true, overdraw = false)


hidedecorations!(axe)

display(fig)

What I get is the following

Here some weird artifacts are visible.

---

Actually what I want is similar to the generated file with this Matlab-Code

P = stlread('~/TestMesh.stl');

trimesh(P,'EdgeColor','r')

hold on

trisurf(P,'EdgeColor','none','FaceColor','c')

axis off

lightangle(-45,30)

lighting gouraud

Here the geometry is drawn nicely.

So can this style be adapted in Makie?

[mkitti]

Is TestMesh.stl available somewhere?

[ffreyer]

Set color for the mesh plot to something opaque. The default has some transparency

[jules]

That default was only meant for 2d shapes overlapping. We should think about changing it for meshes, in 3D transparency has a couple problems

[Midez]

Just for your interest - here is the file I’m Testing with

• TU Berlin

[Midez]

Aw, thats’s unfortunate. But big up for your work so far!

[jules]

With an opaque cyan and black lines it’s much closer to your matlab example, although the default light doesn’t come from the front anymore:

mesh!(msh, transparency = false, overdraw = false, color = :cyan)

wireframe!(msh, color = :black, linewidth = 0.5)

hidedecorations!(axe)

fig

And if the directional light comes from the front it looks even closer:

fig = Figure()

axe = Axis3(fig[1, 1])
axe.scene.lights[2].direction[] = Vec3f(0, 0, -1)

mesh!(msh, transparency = false, overdraw = false, color = :cyan)

wireframe!(msh, color = :black, linewidth = 0.5)

hidedecorations!(axe)

fig

[liuyxpp]

It seems that Matlab’s mesh lines are much sharper, though.

[jules]

with fxaa = true on the wireframe it seems a bit better, but I still sometimes think our problem is that we draw the lines in a separate pass than the mesh. I assume matlab does it in one go

[Midez]

awesome, this is still looking really nice and is exactly what I want! Thx