Rank: 1221 based on 116 downloads (last 30 days) and 3 files submitted
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Johannes Korsawe

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I am a mathematician at the Volkswagen AG and working with MATLAB since ~1998.


 

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06 Jan 2014 Screenshot intriangulation - which points are inside a 3d watertight triangulation? Are 3D-testpoints located inside or outside an arbitrary watertight mesh with vertices and faces? Author: Johannes Korsawe inside, 3d, point, mesh, volume, watertight 31 12
  • 5.0
5.0 | 2 ratings
27 Jan 2012 Screenshot circlefit3d - fit circle to three points in 3d space Calculate center, radius and plane of circle that passes through three given points Author: Johannes Korsawe circle, points, fit, interpolation, 3d, linear algebra 47 2
  • 5.0
5.0 | 2 ratings
09 Jan 2008 Screenshot Minimal Bounding Box Minimal bounding box around points in the (x,y,z) space Author: Johannes Korsawe bounding, box, cuboid, minimum, surface 38 3
  • 4.85714
4.9 | 7 ratings
Comments and Ratings by Johannes Korsawe View all
Updated File Comments Rating
01 Sep 2014 intriangulation - which points are inside a 3d watertight triangulation? Are 3D-testpoints located inside or outside an arbitrary watertight mesh with vertices and faces? Author: Johannes Korsawe

The mesh generated by cylinder is not closed (or watertight). Close it by adding middlepoints on top and bottom and generate additional appropriate triangles to form the caps on the two ends.

Best regards,
Johannes

03 Jun 2014 scatterquad2 calculates the volume under a surface defined by scattered points Author: Ben Petschel

Works as addressed. Very nice!

20 May 2014 Particle System Toolbox Graphically simulate the interactions of particles, springs, and attractions in a particle system. Author: Joerg Buchholz

That is some nice piece of code.

Could be extended to application of external forces? (or is this possible by now?)

07 Mar 2014 grep: a pedestrian, very fast grep utility a unix-like, very fast grep utility to find strings(s) in files of any type Author: us

This should be included in regular MATLAB releases.
It is the rescue boat if you are forced to work with Windows.

06 Jan 2014 intriangulation - which points are inside a 3d watertight triangulation? Are 3D-testpoints located inside or outside an arbitrary watertight mesh with vertices and faces? Author: Johannes Korsawe

Hi yusuf,
you are right, you can easily extend the program or make a check prior to intriangulation to give results for this case as a quick help.
I will fix this as soon as i come to time.

Comments and Ratings on Johannes Korsawe's Files View all
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28 Nov 2014 intriangulation - which points are inside a 3d watertight triangulation? Are 3D-testpoints located inside or outside an arbitrary watertight mesh with vertices and faces? Author: Johannes Korsawe John

01 Sep 2014 intriangulation - which points are inside a 3d watertight triangulation? Are 3D-testpoints located inside or outside an arbitrary watertight mesh with vertices and faces? Author: Johannes Korsawe Johannes Korsawe

The mesh generated by cylinder is not closed (or watertight). Close it by adding middlepoints on top and bottom and generate additional appropriate triangles to form the caps on the two ends.

Best regards,
Johannes

28 Aug 2014 intriangulation - which points are inside a 3d watertight triangulation? Are 3D-testpoints located inside or outside an arbitrary watertight mesh with vertices and faces? Author: Johannes Korsawe Rene Labounek

Hi everyone,
I am trying to separate points outside and inside the cylinder, but it is working as I wish.

Please, do you have any idea what I should change?

I suppose that cylinder function generates only surface. I was trying to generate my own faces as all possible combinations between vertices but it did not help. The output of intriangulation function was same as for faces generated by surf2patch function.

Best,
Rene

[CYL1 CYL2 CYL3]=cylinder(5,200);
CYL = surf2patch(5+CYL1, 5+CYL2, 150*CYL3,'triangles');

testp=[5 5 50;2 1 20; 0.5 0.5 35; 1 1 100;0 5 0;10 5 150; 3 3 80];

h=trisurf(CYL.faces,CYL.vertices(:,1),CYL.vertices(:,2),CYL.vertices(:,3));
set(h,'FaceColor','black','FaceAlpha',1/4,'EdgeColor','none');
hold on
plot3(testp(:,1),testp(:,2),testp(:,3),'b.');
hold off

in = intriangulation(CYL.vertices,CYL.faces,testp)

17 Jun 2014 intriangulation - which points are inside a 3d watertight triangulation? Are 3D-testpoints located inside or outside an arbitrary watertight mesh with vertices and faces? Author: Johannes Korsawe yusuf

Hi Johannes,

Thank you for your interest.

Could you rearrange the code to give the points exactly on the facets and on the vertex of the facet.

11 Jun 2014 Minimal Bounding Box Minimal bounding box around points in the (x,y,z) space Author: Johannes Korsawe Wolfgang

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