Rhino | ❄️ HTTP Mocking & Debugging Service | Mock library

I'm trying to calculate the centroid of a 3D mesh of triangles.

EDIT : it turns out I was not, I was trying to calculate the center of gravity, which is not the same

My code is made of bits and pieces, mainly :

• This nice paper by Cha Zhang and Tsuhan Chen
• SO : How to calculate the volume of a 3D mesh object the surface of which is made up triangles
• SO : How to compute the centroid of a mesh with triangular faces?

I compared my results to those provided by Rhino. I calculate the centroid and volume :

• of the reference NURBS volume with Rhino 7
• of a 27k triangle mesh with Rhino 7
• of a simplified 1k triangle mesh with Rhino 7
• of the same 1k triangle mesh with my code.

As you can see, it works great to calculate the volume, but not for the centroid, and i can't seem to know why. I need the error to be less than 0.01. I checked everything several times, but there must be something obvious.

I'm not great with numerical instability :

• should I work in milimeters instead of meters ?
• should I calculate the tetrahedrons signed volume with another point than the origin, as suggested by galinette in the second reference ? I tried and it didn't improve much.

MY CODE

Before calculationg anything, I check that my mesh is correct (code not provided) :

• closed mesh, no naked edges or any holes ;
• the vertices of all triangles are ordered consistently, i.e. triangles are correctly oriented towards the outside of the mesh.

I tried to convert a Scala project (without SBT) to an SBT project and I am struggling to run it in IntelliJ. I have Scala 2.11 and Java 8 installed correctly but still no luck. I think there is a configuration with IntelliJ which I am not doing correctly. I appreciate any help or hint.

build.sbt:

I'm making a communication via a socket but I'm having problems sending data from the server. I'm able to send a response after receiving something but I need to be able to send a message without receiving anything from the client beforehand.

What I want to do is basically send a command over the socket after a connection is established. (after AcceptCallback() was called, which I check for). In my main program I have a button which I want to be able to click anytime to send a certain message. However, every time I try this I get an error that I cannot anything over an unconnected socket.

As you can see in the code I tried to send another message after receiving something from my client (see in the ReceiveCallback() where I send "Test send"). Sending that works, but if I want to send something else afterwards it again gives the error that I can't send something over a disconnected socket.

The current code looks like this(excerpts):

I'm trying to take a hardcoded array and print out all the sums of each column. Everytime I try it just prints the first column sum over and over before ending. I do not know what else to add to keep the loop going throughout the entire array.

Heres the code:

I am trying to add Mozilla Rhino to my SBT project but it fails to fetch. More specifically I get an error:

Unknown artifact. Not resolved or indexed

I am using a solution called Rhapsody made by Lyniate which has a JavaScript engine. I have the following code:

DB Fiddle example: https://www.db-fiddle.com/f/eGee7uKqPRLUxMeMjwGoaH/0

I have two tables, table A contains strings with multiple words and table B contains words that I'm trying to find.

Table A looks like this:

Is it possible to set a "default" return value for a RhinoMock stub?

For ex: I have a method that takes in an int from 1-175 and returns a bool:

I am making a calculator app.

workingsTV is the place where calculating is shown.

resultsTV is the place showing the result of calculating.

workings is doing math by using rhino's library.

I want to add a comma at every three digits on both workingsTV and resultsTV.

I tried to use it like this for resultsTV.