B4J Tutorials

WebGL library, working with physics engines - Part 2

Hi all,

this is the second part of WebGL library physics engines demos.

Before compile it, you have to download the Resources1.zip file, rename it to Resources.zip
and put it in the...
 

Attachments

  • jWebGL_Physics_Engines_2.zip
    10.3 KB · Views: 341
Last edited:
Click to expand...

[SithasoDaisy5] Easy Mark Down Editor & Viewer

Hi Fam

The EasyMDE allows one to have a MarkDown Editor within their app. This is based on this GitHub.

One is able to create Markdown documents and save and retrieve them. The nice thing...
 
Click to expand...

[BANano] How to Edit / Sign existing PDF Documents?

Hi Fam

I wanted to sign PDF documents in my product. So.. I used the PDF-LIB for this.

1. I designed a screen to enter the signature and initials.



2. The canvas we use...
 
Last edited:
Click to expand...

jFreeTTS Text2Speech Library

Hi there, it's a pleasure to get this working...



My jFreeTTS is a library that I've just managed to cook for text to speech using the FreeTTS library.

1. Download the FreeTTS...
 

Attachments

  • jFreeTTS.zip
    20.8 KB · Views: 1,440
  • Mbrola.png
    6.1 KB · Views: 1,238
Last edited:
Click to expand...

[SithasoDaisy5] A JSON Web Editor you will love from the creator of MathJS

Hi Fam

This has been one of those components that I postponed to do. The creator of MathJS, a javascript library that I have been using for a while, also created a JSON Editor. I decided to...
 
Click to expand...

[SithasoDaisy5] Effortlessly visualize JSON structures as dynamic tree diagrams

Hi Fam

With SithasoDaisy5, you have the capability to view JSON files as dynamic trees. This is wrapping this Github project.




The code is as simple as feeding the component...
 
Click to expand...

[SithasoDaisy5] Creating your Organogram / Family tree

Hi Fam

With SithasoDaisy5, you will be able to create Organograms / Family Trees. Drop a SDUI5TreeSpider on your form and whala!

This is wrapped from this GitHub Project



B4X: 
...
 
Click to expand...

[SithasoDaisy5] Creating your first MySQL CRUD WebApp using REST API With API-Key (Php)

Hi Fam

Before you start this tutorial, please ensure that your dev environment is setup by following this tutorial...
 

Attachments

  • SithasoDaisy5Pages.zip
    87.9 KB · Views: 399
Last edited:
Click to expand...

[PyBridge] pyvips - image manipulation library

pyvips is a very powerful image manipulation library. It can manipulate very large images. I've created a modified "HugeImageView" based on it as an example. It can show 1-2 GB images...
 

Attachments

  • SuperHugeIV.zip
    8.9 KB · Views: 353
Click to expand...

[ABMaterial][BANano] Issue(s) with developing in both

First post, first issue:
I'm in the process of developing an ABM application. For testing purposes, I uploaded the application on my test server. The application may start fine, but when loading...
 
Last edited:
Click to expand...

[PyBridge] The very basics

PyBridge is a framework that allows accessing Python libraries from within B4J.

It works by starting a Python process that connects to the B4J process. The Python process receives commands from...
 
Click to expand...

WebGL library, working with physics engines - Part 1

Hi all,

here a simple shooter game using B4J WebGL libary and cannon.js physic engine.

Note that really I use cannon-es that is a port of cannon.js to use inside Javascript ES6 modules.

Note...
 

Attachments

  • jWebGL_Physics_Engines.zip
    8.6 KB · Views: 349
  • Screenshot 2025-03-17 020320.jpg
    244.9 KB · Views: 423
  • Screenshot 2025-03-17 020910.jpg
    257.3 KB · Views: 428
  • Screenshot 2025-03-17 021855.jpg
    164 KB · Views: 442
Last edited:
Click to expand...

[PyBridge][server] Using PyBridge in web apps

PyBridge must be accessed from a single thread. In server solutions, each handler runs in its own thread so we need to add some barriers to ensure proper usage.

The way to implement it is by...
 

Attachments

  • ServerWithPyBridge.zip
    14.8 KB · Views: 368
Click to expand...

[PyBridge] Communicating with Raspberry Pi

This sophisticated project does one thing - the user clicks on a hardware button, connected to the RPi, and a notification appears on the PC.



The setup:
RPi running Mosquitto broker...
 
Last edited:
Click to expand...

Make a simple 3D game with WebGL library, with gravity and collisions in less than 300 lines of code.

Hi all,

this code will show how to make a simple 3D game, with gravity and collisions by code without use any physics engine.

I want to remember that with WebGL library you can use more than one...
 

Attachments

  • jWebGL_SimpleGame.zip
    292.8 KB · Views: 400
  • Screenshot 2025-03-11 150808.jpg
    160.6 KB · Views: 486
Last edited:
Click to expand...

SithasoDaisy TailwindCSS UI Toolkit: Q & A

Hi there

NB: Where possible, please include a simple project that demonstrates your use case.

Do you have any questions about SithasoDaisy UI Toolkit?

You can shoot it here...
 
Last edited:
Click to expand...

Raspberry Pi 5 - first steps

Getting the RPi 5 to work with B4J is very simple.

I've tested it with the recommended 64 bit Raspbian OS (bookworm).

1. Download and unpack the Linux ARM Full JDK (21)...
 
Click to expand...

Shrinking that SQLite JDBC library!

NOTE: This isnt recommened for everyone, this is just something that works for me. Removing support for specific platforms could cause your app to stop working.

I use SQLite for a lot of...
 
Last edited:
Click to expand...

[B4X] [PyBridge] Desktop - Mobile Communication based on BLE (Bluetooth Low Energy)

Attachments

  • B4XPeripheral.zip
    181.1 KB · Views: 380
  • B4JCentral.zip
    4.6 KB · Views: 401
Click to expand...

Deutsche Post Internetmarke - get Stamps per Api

This Thread is about the german Post and their free Api Service for Postalstamps and other Services...
 
Last edited:
Click to expand...
You must log in or register to post here.
Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…