Linked Questions
12 questions linked to/from How to estimate geodesics on discrete surfaces?
97
votes
17
answers
5k
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Future enhancements for the finite element method
How should the finite element method (FEM) framework in the language be extended to be more useful?
With the release of version 12.0 all fundamental FEM solvers (linear, nonlinear, stationary, ...
- 38.4k
29
votes
4
answers
3k
views
How to speed up estimation of Mean and Gaussian curvatures on triangular meshes?
I am trying to estimate curvatures on a triangulated surface/manifold using the algorithm of : Meyer, M., Desbrun, M., Schröder, P., & Barr, A. H. (2003). Discrete differential-geometry operators ...
- 3,713
18
votes
4
answers
1k
views
Draw circle on ellipsoid
Define a circle $\cal{C}(p,r)$ on the surface of an ellipsoid $E$ in $\mathbb{R}^3$
to be the set of points
on $E$ whose shortest geodesic distance from centerpoint $p$ is $r$.
Let me assume that $r$ ...
- 4,619
16
votes
2
answers
760
views
Voronoi tessellations on meshed surfaces
Given a meshed surface, on which we can calculate geodesic distances between vertices, how can one calculate the Voronoi tessellation of a set of points located on this surface?
This is somewhat ...
- 3,713
19
votes
2
answers
3k
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Estimating Principal Curvature Directions on Discrete Surfaces
I am continuing with working on implementing curvature estimations on triangulated surfaces (See: here), using the algorithm of : Meyer, M., Desbrun, M., Schröder, P., & Barr, A. H. (2003). ...
- 3,713
13
votes
2
answers
1k
views
How to interpret the FullForm of a SparseArray?
SparseArrays are atomic objects, but they do have a FullForm which reveals information about them.
What is the meaning of the ...
- 231k
11
votes
2
answers
2k
views
Geodesics on a torus
Is it possible to draw geodesics between the points in a path on a torus - toroidal surface?
geodesics: generalization of the notion of a "straight line" to "curved spaces"
...
- 589
8
votes
2
answers
322
views
Contourplots on discrete surfaces
Does anyone know how one can plot contour lines on a meshed surface? For example I would like to be able to plot contour lines indicating lines of equal distance from a given point such as data coming ...
- 3,713
7
votes
3
answers
411
views
Reduce quality of an imported MeshRegion
Importing STL files using Import results in a MeshRegion composed by the triangulation of the original file, and a similar ...
- 429
7
votes
1
answer
488
views
Voronoi mesh from non-parametric surfaces for 3D printing
I am trying to make a Voronoi mesh from the Stanford Bunny surface for 3D printing, intended as a test case to make a Voronoi mesh from any arbitrary, non-parametric 3D surface. Related techniques ...
- 73
7
votes
1
answer
438
views
Is it possible to use a function for EdgeWeight in a Graph?
Why I cannot calculate all edge weights beforehand:
I have many large graphs for which I'd like to find the shortest path between two vertices (FindShortestPath ...
- 7,774
2
votes
0
answers
71
views
Display minimum distance and minimum-distance path between two points on a polyhedron
Given a genus-zero polyhedron (e.g., PolyhedronData["Dodecahedron"]) and a point $P$ anywhere on its surface, color all points on the polyhedron by the length of ...
- 38.2k