laminar | A simple semi-reliable UDP protocol for multiplayer games | Networking library
kandi X-RAY | laminar Summary
kandi X-RAY | laminar Summary
Laminar is an application-level transport protocol which provides configurable reliability and ordering guarantees built on top of UDP. It focuses on fast-paced fps-games and provides a lightweight, message-based interface. Laminar was designed to be used within the Amethyst game engine but is usable without it. If you are new to laminar or networking in general, We strongly recommend taking a look at the laminar book.
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QUESTION
Apologies in advance for my inefficient code, still learning! I'm trying to create a loop that (1) takes items from a list of semantic characters, copying the ones that are relevant into a new matrix, and (2) deleting the items I copy as I go. I achieved part 1, but cannot get part 2 to work. It only works for the first two rows and then I get a "Error in a[[n]] : subscript out of bounds".
Here is the code that achieves part 1:
...ANSWER
Answered 2021-May-18 at 20:35I am not 100% sure that I understand what you are trying to do, however, the reason that you are getting an out-of-bounds error is that
- You establish the value
xhere:
QUESTION
I want to remove the navigation drawer from my fragment_login and fragment_create_account fragments. I removed the bottom navigation and toolbar from these fragments using addOnDestinationChangedListener with the following code for toolbar:
...ANSWER
Answered 2021-Feb-08 at 14:32I didn't understand what are you trying to do, but you can remove it by deleteing the menu.xml in the resources/menu file.
Don't forget to clean the XML and classes to avoid any errors.
If you are trying just to hide them from the UI you can do that by setting the visibility.
Another way is to remove the setting the menu up from the hosting screen.
QUESTION
I'm trying to write code to calculate boundary layer development over an aerofoil.
I start with a set of points, S, that describe the shape of the aerofoil.
I run an inviscid solver on these points and extract the stagnation point, which will be an element of S.
The set of points S is now divided by the stagnation point into two sets su and sl, which describe the shape of the aerofoil underneath the upper and lower boundary layers.
Here is my first problem. Suppose I write a component, BoundaryLayerSolve, that takes a vector s of points in the boundary layer and a vector ue of edge velocities to that boundary layer. Both s and ue will be of the same length. If I wanted to use this one component twice, once for each side of the aerofoil, I would need to know a priori the position of the stagnation point, which cannot be found until the model is already set up and run for the inviscid solver. How could I set it up so that I can handle these unknown input array sizes?
Now the input s and ue arrays are known for the upper and lower boundary layers, the boundary layers can be computed. I will be using two models, one for the laminar region of the boundary layer and one for the turbulent region. Assume that these two models use totally different computations, and that these computations are complicated enough that in order to find their analytical partial derivatives they must be broken up into subcomponents.
The laminar calculations begin at the stagnation point and march along s. At each step, the value of the momentum thickness is calculated. If the transition threshold is reached, the laminar calculations must stop and turbulent calculations must be used for the rest of s. I should stress that it isn't an option to do laminar for all of s, turbulent for all of s, then simply slice off the back part of the laminar output and the front part of the turbulent output. The turbulent calculation must begin with the values from the laminar calculation at the point of transition.
In psuedocode, this would be something like:
...ANSWER
Answered 2021-Feb-06 at 14:20For questions 1 and 2: Currently OpenMDAO doesn't handle dynamic sizing of inputs and outputs during execution, and there aren't currently any plans to change this. We offer shape_by_conn to allow variables to be shaped based on their sources/targets, but I don't think that's what you want here, since both sides are undetermined in your formulation.
Question 3: If we handle the problem implicitly, then we can force the transition between the two calculations to occur at the junction between the laminar and turbulent regions. For instance, in Dymos when we're propagating a trajectory we don't use event triggers as a typical time-stepping simulation might. Instead, we use constraints at the beginning or end of a "phase" of the trajectory to force the transition condition to occur at the junction.
My inclination is to try formulating the problem this way:
Use interpolation to provide the point on the airfoil as a function of some independent variable. S = f(x). Imagine the point circled in red sliding continuously around the airfoil as
xis changed.Assume that the transition point is known a priori, so we have two main calculation groups: laminar and turbulent. Each group evaluates some number of points on the airfoil (
N_landN_u). The value of parameterxthat determines the transition point can "slide" back and forth such that until the assumed transition point value of x matches the actual desired value (by enforcing residuals or constraints at the transition point, withxas an implicit variable or design variable).Instead of feeding outputs from the laminar portion into the turbulent portion at the transition point, treat those values as independent variables in the turbulent section and then force them to match the values at the end of the laminar section (either by setting up residuals, or as constraints for the optimizer).
Depending on the particular details of the implementation, you might have to bound the assumed values to get valid calculations out of each section. I'm also not sure what you'd use as an objective function here, if you were formulating this using an optimization approach instead of a solver.
QUESTION
I designed a button, this is how it should be but this is how it is. The design changes but the color and border does not.
My fragment file in which I am using the button is:
...ANSWER
Answered 2021-Jan-31 at 20:22To avoid taking the default Button style, add app:backgroundTint="@null" to each Button that uses this drawable
This will make sure that the button background doesn't get tinted
QUESTION
ScreenShot of login screen with bottom navigation bar
Hi, I am facing an issue in my university project. In the image above you can see that in my login screen there is a bottom navigation bar which I want to remove but everything I've tried ended up in compilation issues. My MainActivity.KT is
...ANSWER
Answered 2021-Jan-29 at 12:38NavController offers an OnDestinationChangedListener interface that is called when the NavController's current destination or its arguments change which can be used to update UI elements such as BottomNavigationBar as you navigate between fragments.
MainActivity.KT
QUESTION
I have a finite volume library, strongly influenced by openfoam, which enables the solution to continuum mechanics problems to be written in C++ similarly as one would in paper. For example, to solve the Navier-Stokes equation for incompressible, laminar flow I simply write:
...ANSWER
Answered 2020-Oct-31 at 17:07I'm going to severely reduce your example as follows:
QUESTION
I have a piecewise function with 3 parts that I'm trying to write in Python using Numba @jit instruction. The function is calculated over an array. The function is defined by:
...ANSWER
Answered 2020-Oct-28 at 16:35Is this too slow? This can be done in pure numpy, by avoiding loops and using masks for indexing:
QUESTION
I'm facing a problem with mails on while using queue. If I use Mail with send(), everything works fine.
The controller:
...ANSWER
Answered 2020-Aug-06 at 17:08Have you tried just sending the name as data by adding it to your $order_data and displaying it in the mail blade to see if that solves the problem.
QUESTION
I'm trying to follow this OpenFOAM tutorial for using Gmsh to generate Axisymmetric mesh. The files are provided here. However when I try to solve the problem using the pimpleFoam solver I get the error:
--> FOAM FATAL ERROR: Unknown TurbulenceModel type RASModel
Valid TurbulenceModel types:
3 ( LES RAS laminar )
From function static Foam::autoPtr > Foam::TurbulenceModel::New(const alphaField&, const rhoField&, const volVecto rField&, const surfaceScalarField&, const surfaceScalarField&, const transportMo del&, const Foam::word&) [with Alpha = Foam::geometricOneField; Rho = Foam::geom etricOneField; BasicTurbulenceModel = Foam::incompressibleTurbulenceModel; Trans portModel = Foam::transportModel; Foam::TurbulenceModel::alphaField = Foam::geometricOneField; Foam::Turbulenc eModel::rhoField = Foam::geome tricOneField; Foam::volVectorField = Foam::GeometricField; Foam::surfaceScalarField = Foam::GeometricFi eld; Foam::TurbulenceModel::transportModel = Foam::transportMo del] in file /opt/CFDSupportFOAM4.0/beta/OpenFOAM-dev/src/TurbulenceModels/turbul enceModels/lnInclude/TurbulenceModel.C at line 113.
As explained in this page apparently the syntax of turbulenceProperties in case/constant has changed. So I edited the turbulenceProperties file from:
simulationType RASModel;
to
...ANSWER
Answered 2020-Jan-05 at 19:50I was able to solve the issue by looking into the different versions of axisymmetricJet template provided in official OpenFOAM GitHub repo (version 2.3.x and version 5.x). Changes to be made:
- in
case/constant/RASPropertiesadd these at the end:
QUESTION
Separating question text from question options. How do I get this?
I tried it but it doesn't work very well:
...ANSWER
Answered 2019-Jun-06 at 17:34If we only wish to detect three listed chars, we would be starting with a simple expression such as:
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