Programming and Computer Graphics by Linus Suter. Sun, 02 Nov 2025 00:00:00 +0000 codewelt https://codewelt.com/
All accessible through an intuitive dark-themed interface with searchable algorithm list, real-time parameter sliders, algorithm stack system for chaining operations with reordering and editing capabilities, hardware-accelerated OpenGL viewport supporting ten render modes from wireframe to x-ray transparency, six professional lighting presets including studio three-point and dramatic configurations, interactive camera controls with arcball rotation and auto-framing.

Comprehensive export to nine formats including OBJ, STL, PLY, FBX, JSON, X3D, VRML, DXF and 3DS, real-time mesh statistics display, keyboard shortcuts for quick operations and full WebAssembly support for browser-based deployment with zero installation.

WebGL 2.0 hardware acceleration, responsive HiDPI canvas, browser compatibility with Chrome, Firefox, Safari and Edge 57+, making it ideal for educators teaching mathematical surfaces, students exploring parametric design, 3D printing enthusiasts generating STL models, game developers creating procedural assets, architects exploring computational design, artists creating mathematical art, researchers prototyping generative systems and hobbyists experimenting with procedural generation.]]> Sun, 02 Nov 2025 00:00:00 +0000 https://codewelt.com/mesher https://codewelt.com/mesher
With Yap users can draw a variety of chart types, including CandleStick Charts, Spider Charts, and Histogram Charts for specific timeframes.
Creating charts is as simple as right-clicking on a symbol and selecting the desired chart type, allowing for easy comparison of multiple symbols.
Advanced zoom and pan features enhance interactivity, with basic zoom functions supported by click, drag, and mouse-wheel controls, and the escape key quickly resetting the zoom level. Customizable line charts enable users to change line colors at any time and highlight lines by clicking on the symbol.

Advanced features cater to more experienced users, who can add multiple symbols quickly by submitting titles separated by a space character. The application allows for direct comparison of different timeframes to analyze stock performance.

Users can save advanced analysis details to an Excel xlsx file, facilitating the comparison of various details of all entered symbols in beautifully colored, large Excel sheets. An example exported stock sheet set is available for all major indexes.
For example the application calculates volatility and win probability for each title and time period, making it perfect for comparing the performance of many symbols at once.

The executables are compiled statically for Windows, macOS and Linux, ensuring robust performance across all platforms. Yap supports very big high-resolution fullscreen charts, providing a clear and detailed view of stock data. Released under the GNU/GPL License, this app is 100% free and it comes without a warranty!

With its powerful features and user-friendly interface, this desktop software application is an essential tool for traders looking to analyze and compare stock details efficiently.]]> Mon, 24 Jun 2024 00:00:00 +0000 https://codewelt.com/yap https://codewelt.com/yap
It is just perfect for low-resolution displays used by for example LED dot matrices like traffic signs or scrolling subway tickers.
Most characters use a tiny grid of only four by five pixels, which is incredibly small and yet still readable. This is a fun lowercase and uppercase typeface for letters, numbers, symbols, and punctuation.

It is a vector-based font, so unlike all the bitmap fonts, it can be scaled to any point size without quality loss or requiring an extra-large file size. Once the text is rasterized, there is still some space to customize the letters simply by moving around, adjusting, or attaching single pixels.

The Ultimate Pixel Font is available as TrueType, OpenType, and Web Open Font Format file. It is compatible with all operating systems and counts 143 glyphs. All files are released under the open-source GNU/GPL license and free for commercial use.]]> Sat, 26 Nov 2022 00:00:00 +0000 https://codewelt.com/pixelfont https://codewelt.com/pixelfont
The Text-to-Speech voice will read any news on your favorite social networks, news-feeds or messaging services. This way you always stay updated without even touching a device.
This comes in handy in certain situations when one is just not allowed to use a mobile phone. For example at work or while driving a car, the speech output keeps you posted without needing to pick up or look at the device.

In most cases, while using a messenger-app for example, you commonly use up to three or four different languages when texting. Therefore an advanced feature will automatically detect the language used in the notification-event and set the speech output accordingly. Please keep in mind that this kind of offline method is not always accurate, especially for short text.

Important for privacy is the option to skip all message details, so when a notification is processed, the second part of the message is simply skipped. This way only the title is read out loud. Besides, when you sometimes receive about thirty messages an hour, this same feature will stop you from getting annoyed by ignoring the long section of notifications.
Concerning privacy, please note that both enhanced features, automatic language detection and the Text-to-Speech engine audio output, are executed completely offline. This app is 100% free and Open-Source, so feel free to view and use the code.]]> Thu, 26 Mar 2020 00:00:00 +0000 https://codewelt.com/singer https://codewelt.com/singer So long, and thanks for all the fish.]]> Sun, 22 Mar 2020 00:00:00 +0000 https://codewelt.com/skybots https://codewelt.com/skybots
This open source DirectX9 Demo shows some basic use of common techniques like normal-mapping and building a skybox using cube-maps.
The scene shows sand, some grass and beautiful rocks. There are animated objects like ocean waves, shallow water caustics and windy palm trees by using a noise lookup-table.

Use your mouse and keyboard to navigate through a complete 3D environment and explore a caribbean-like island scenery. Passing a command-line argument to the executable will run in Fullscreen-Mode. If you run a Linux Operating System, please use wine-stable to execute the application.

Now take a short break and dive into a realistic feeling scene you can move around, rotate and zoom in realtime.]]> Wed, 01 Aug 2018 00:00:00 +0000 https://codewelt.com/island https://codewelt.com/island
First enter a text of your choice or paste the clipboard information to the big primary panel. Now press the green »Speak«-button for a basic Text-to-Speech request. Next, you can set the site to automatically translate and output the text in another language.

Now the interface gives you the possibility to choose the desired Voice-Type from a drop-down list, alter the amplitude/pitch and adjust the speech speed. When you are satisfied with the result, you can save the audio output as an Mp3 file for further use.

Finally, a special and advanced feature offers you to use the devices microphone and record Speech-to-Text, directly translating this text to another language and reading the result aloud. This feature is pretty straightforward, it kind of works like voice commands and doesn't require a lot of time or effort. Just make sure the selected language matches the one being spoken and voice-recorded. By these few simple steps, you can convert any speech or text into another language. This makes communicating easy in all kinds of different languages.

The Web-Application enables you to use it as an interpreter, for translating and quickly communicating in dialogs. For this purpose, you can use the »Swap Languages«-button to quickly change the input and output language settings for directly replying to a second user. Pressing the »Clear-Input«-button restores all options to their default value. All playback can be canceled anytime using the »Silence«-button. No matter if you'd like to learn a new language for education or simply want to chat with someone that doesn't speak your language, FastHub.net is the perfect web tool to help you out.]]> Sat, 03 Feb 2018 00:00:00 +0000 https://codewelt.com/fasthub https://codewelt.com/fasthub Sun, 29 Oct 2017 00:00:00 +0000 https://codewelt.com/gcar https://codewelt.com/gcar
Tuber is written from scratch, 100% free, open-source and available for various operating systems like Windows, MacOSX, Linux, iOS and Android. Tuber runs natively on desktops, tablets and even phones.]]> Mon, 06 Feb 2017 00:00:00 +0000 https://codewelt.com/tuber https://codewelt.com/tuber
With this graphical wxWidgets front end to the open source noise library, you can compose a render tree from many different types of noise, such as Perlin-, Ridged multi-fractal or Billow.

By right-clicking the module setup you may add, remove and nest the modules of your choice. First choose one of the generator, transformer, modifier or combiner modules and then modify all parameters to the values of your choice.]]> Fri, 26 Apr 2013 00:00:00 +0000 https://codewelt.com/noiser https://codewelt.com/noiser
Running the main application will show the depth map of the device and a real-time view of the output. As you then move around or point at an object from different angles the new depth data is continuously added for a complete capture of the scenario you're in.
Once you are satisfied with the result, the data can be stored in order to construct a mesh and the corresponding texture. Please keep in mind that this project is currently being developed and may be unstable. Since Microsoft XBOX Kinect devices are sold separately for about 100$, this is the cheapest option in scanning a scene anyone can use.]]> Thu, 06 Sep 2012 00:00:00 +0000 https://codewelt.com/kinect3dscan https://codewelt.com/kinect3dscan The parameter can be a String specifying a solid color or HTML image and canvas element. The mode determines how the two defined layers will blend into each other. The result is saved, so running the script twice will reprocess the first result. Two simple examples are part of the downloadable zip file.]]> Wed, 28 Mar 2012 00:00:00 +0000 https://codewelt.com/blendmode https://codewelt.com/blendmode Mon, 21 Nov 2011 00:00:00 +0000 https://codewelt.com/snappy https://codewelt.com/snappy
Why would you want to strip down an image file? Ask former TechTV host Cat Schwartz, who received a rather embarrassing lesson in 2003 about the power of metadata. In short, a cropped headshot posted on her blog contained an embedded, full-pic thumbnail with, well, a lot more than just a head and shoulders. Even if you're not cropping your mug out of a nude composition, there are others reasons you'd want to remove the metadata from an image. All sorts of information like exposure time, aperture settings, camera used, and GPS coordinates can potentially be embedded into an image.
This application just leaves the unaltered image behind. Whatever your motivation for sanitizing images is, you'll know that only the image itself remains. ]]> Wed, 29 Jun 2011 00:00:00 +0000 https://codewelt.com/stripper https://codewelt.com/stripper Sun, 26 Jun 2011 00:00:00 +0000 https://codewelt.com/vrcar https://codewelt.com/vrcar All text-images are Jabber and Facebook compatible as comment post! Don't forget to grab that leading dot too.]]> Fri, 01 Apr 2011 00:00:00 +0000 https://codewelt.com/unicodeimage https://codewelt.com/unicodeimage This technique enables you to make full use of a display panel with Red, Green, Blue and White emitters.]]> Wed, 09 Mar 2011 00:00:00 +0000 https://codewelt.com/rgbw https://codewelt.com/rgbw Guests of this page may start by finding ad/movie cuts or closeup information in the saved bars or during runtime. Imagine the automatic removal of ads on television/webstream by techniques like this.
Take a look at the source below with a ffmpeg class, originally by Michael Meeuwisse, I adapted to my needs.]]> Fri, 11 Feb 2011 00:00:00 +0000 https://codewelt.com/videoanalysis https://codewelt.com/videoanalysis You may write anything into the text field and press the blue speak button at the bottom left. Choose one of many different languages. Optionally press the download button to get an mp3 file just created by the application for further use. You can quickly share the sound and text you entered by copying the generated link and pasting it somewhere. Another feature allows you to directly take the link to the URL Obfuscator and hide the text spoken from the URL you share.]]> Wed, 22 Jul 2009 00:00:00 +0000 https://codewelt.com/proj/speak https://codewelt.com/proj/speak Sun, 19 Jul 2009 00:00:00 +0000 https://codewelt.com/proj/ada https://codewelt.com/proj/ada Fri, 17 Jul 2009 00:00:00 +0000 https://codewelt.com/proj/ada/baumtraversierung https://codewelt.com/proj/ada/baumtraversierung Wed, 15 Jul 2009 00:00:00 +0000 https://codewelt.com/proj/ada/permutationen https://codewelt.com/proj/ada/permutationen Sun, 19 Oct 2008 00:00:00 +0000 https://codewelt.com/particle https://codewelt.com/particle