base on TerminalTextEffects (TTE) is a terminal visual effects engine, application, and Python library. <br/> <p align="center"> <a href="https://github.com/ChrisBuilds/terminaltexteffects"> <img src="https://github.com/ChrisBuilds/terminaltexteffects/assets/57874186/66388e57-e95e-4619-b804-1d8d7ebd124f" alt="TTE" width="80" height="80"> </a> <h3 align="center">Terminal Text Effects</h3> <p align="center"> Inline Visual Effects in the Terminal <br/> <br/> </p> </p> [](http://pypi.org/project/terminaltexteffects/ "")  [](https://youtu.be/eWnYlxOREu4?t=1549)  ## Table Of Contents * [About](#tte) * [Requirements](#requirements) * [Installation](#installation) * [Usage (Application)](#application-quickstart) * [Usage (Library)](#library-quickstart) * [Effect Showcase](#effect-showcase) * [In-Development Preview](#in-development-preview) * [Latest Release Notes](#latest-release-notes) * [License](#license) ## TTE  TerminalTextEffects (TTE) is a terminal visual effects engine. TTE can be installed as a system application to produce effects in your terminal, or as a Python library to enable effects within your Python scripts/applications. TTE includes a growing library of built-in effects which showcase the engine's features. These features include: * Xterm 256 / RGB hex color support * Complex character movement via Paths, Waypoints, and motion easing, with support for bezier curves. * Complex animations via Scenes with symbol/color changes, layers, easing, and Path synced progression. * Variable stop/step color gradient generation. * Event handling for Path/Scene state changes with custom callback support and many pre-defined actions. * Effect customization exposed through a typed effect configuration dataclass that is automatically handled as CLI arguments. * Runs inline, preserving terminal state and workflow. ## Requirements TerminalTextEffects is written in Python and does not require any 3rd party modules. Terminal interactions use standard ANSI terminal sequences and should work in most modern terminals. Note: Windows Terminal performance is slow for some effects. ## Installation ```pip install terminaltexteffects``` OR ```pipx install terminaltexteffects``` ### Nix (flakes) Add it as an input to a flake: ```nix inputs = { terminaltexteffects.url = "github:ChrisBuilds/terminaltexteffects/<optional-ref>" } ```` Create a shell with it: ```nix nix shell github:ChrisBuilds/terminaltexteffects/<optional-ref> ``` Or run it directly: ```nix echo 'terminaltexteffects is awesome' | nix run github:ChrisBuilds/terminaltexteffects/<optional-ref> -- beams ``` ### Nix (classic) Fetch the source and add it to, e.g. your shell: ```nix let pkgs = import <nixpkgs> {}; tte = pkgs.callPackage (pkgs.fetchFromGitHub { owner = "ChrisBuilds"; repo = "terminaltexteffects"; rev = "<revision, e.g. main/v0.10.0/etc.>"; hash = ""; # Build first, put proper hash in place }) {}; in pkgs.mkShell { packages = [tte]; } ``` ## Usage View the [Documentation](https://chrisbuilds.github.io/terminaltexteffects/) for a full installation and usage guide. ### Application Quickstart #### Options <details> <summary>TTE Command Line Options</summary> ```markdown options: -h, --help show this help message and exit --input-file INPUT_FILE, -i INPUT_FILE File to read input from (default: None) --version, -v show program's version number and exit --tab-width (int > 0) Number of spaces to use for a tab character. (default: 4) --xterm-colors Convert any colors specified in 24-bit RBG hex to the closest 8-bit XTerm-256 color. (default: False) --no-color Disable all colors in the effect. (default: False) --existing-color-handling {always,dynamic,ignore} Specify handling of existing 8-bit and 24-bit ANSI color sequences in the input data. 3-bit and 4-bit sequences are not supported. 'always' will always use the input colors, ignoring any effect specific colors. 'dynamic' will leave it to the effect implementation to apply input colors. 'ignore' will ignore the colors in the input data. Default is 'ignore'. (default: ignore) --wrap-text Wrap text wider than the canvas width. (default: False) --frame-rate FRAME_RATE Target frame rate for the animation in frames per second. Set to 0 to disable frame rate limiting. (default: 100) --canvas-width int >= -1 Canvas width, set to an integer > 0 to use a specific dimension, use 0 to match the terminal width, or use -1 to match the input text width. (default: -1) --canvas-height int >= -1 Canvas height, set to an integer > 0 to use a specific dimension, use 0 to match the terminal height, or use -1 to match the input text height. (default: -1) --anchor-canvas {sw,s,se,e,ne,n,nw,w,c} Anchor point for the canvas. The canvas will be anchored in the terminal to the location corresponding to the cardinal/diagonal direction. (default: sw) --anchor-text {n,ne,e,se,s,sw,w,nw,c} Anchor point for the text within the Canvas. Input text will anchored in the Canvas to the location corresponding to the cardinal/diagonal direction. (default: sw) --ignore-terminal-dimensions Ignore the terminal dimensions and utilize the full Canvas beyond the extents of the terminal. Useful for sending frames to another output handler. (default: False) Effect: Name of the effect to apply. Use <effect> -h for effect specific help. {beams,binarypath,blackhole,bouncyballs,bubbles,burn,canvas_test,colorshift,crumble,decrypt,dev,errorcorrect,expand,fireworks,highlight,laseretch,matrix,middleout,orbittingvolley,overflow,pour,print,rain,randomsequence,rings,scattered,slice,slide,spotlights,spray,swarm,sweep,synthgrid,test,unstable,vhstape,waves,wipe} Available Effects beams Create beams which travel over the canvas illuminating the characters behind them. binarypath Binary representations of each character move towards the home coordinate of the character. blackhole Characters are consumed by a black hole and explode outwards. bouncyballs Characters are bouncy balls falling from the top of the canvas. bubbles Characters are formed into bubbles that float down and pop. burn Burns vertically in the canvas. colorshift Display a gradient that shifts colors across the terminal. crumble Characters lose color and crumble into dust, vacuumed up, and reformed. decrypt Display a movie style decryption effect. errorcorrect Some characters start in the wrong position and are corrected in sequence. expand Expands the text from a single point. fireworks Characters launch and explode like fireworks and fall into place. highlight Run a specular highlight across the text. laseretch A laser etches characters onto the terminal. matrix Matrix digital rain effect. middleout Text expands in a single row or column in the middle of the canvas then out. orbittingvolley Four launchers orbit the canvas firing volleys of characters inward to build the input text from the center out. overflow Input text overflows and scrolls the terminal in a random order until eventually appearing ordered. pour Pours the characters into position from the given direction. print Lines are printed one at a time following a print head. Print head performs line feed, carriage return. rain Rain characters from the top of the canvas. randomsequence Prints the input data in a random sequence. rings Characters are dispersed and form into spinning rings. scattered Text is scattered across the canvas and moves into position. slice Slices the input in half and slides it into place from opposite directions. slide Slide characters into view from outside the terminal. spotlights Spotlights search the text area, illuminating characters, before converging in the center and expanding. spray Draws the characters spawning at varying rates from a single point. swarm Characters are grouped into swarms and move around the terminal before settling into position. sweep Sweep across the canvas to reveal uncolored text, reverse sweep to color the text. synthgrid Create a grid which fills with characters dissolving into the final text. unstable Spawn characters jumbled, explode them to the edge of the canvas, then reassemble them in the correct layout. vhstape Lines of characters glitch left and right and lose detail like an old VHS tape. waves Waves travel across the terminal leaving behind the characters. wipe Wipes the text across the terminal to reveal characters. Ex: ls -a | tte decrypt --typing-speed 2 --ciphertext-colors 008000 00cb00 00ff00 --final-gradient-stops eda000 --final-gradient-steps 12 --final-gradient-direction vertical ``` </details> ```cat your_text | tte <effect> [options]``` OR ```cat your_text | python -m terminaltexteffects <effect> [options]``` * Use ```<effect> -h``` to view options for a specific effect, such as color or movement direction. * Ex: ```tte decrypt -h``` For more information, view the [Application Usage Guide](https://chrisbuilds.github.io/terminaltexteffects/appguide/). ### Library Quickstart All effects are iterators which return a string representing the current frame. Basic usage is as simple as importing the effect, instantiating it with the input text, and iterating over the effect. ```python from terminaltexteffects.effects import effect_rain effect = effect_rain.Rain("your text here") for frame in effect: # do something with the string ... ``` In the event you want to allow TTE to handle the terminal setup/teardown, cursor positioning, and animation frame rate, a terminal_output() context manager is available. ```python from terminaltexteffects.effects import effect_rain effect = effect_rain.Rain("your text here") with effect.terminal_output() as terminal: for frame in effect: terminal.print(frame) ``` For more information, view the [Library Usage Guide](https://chrisbuilds.github.io/terminaltexteffects/libguide/). ### Effect Showcase Note: Below you'll find a subset of the built-in effects. View all of the effects and related information in the [Effects Showroom](https://chrisbuilds.github.io/terminaltexteffects/showroom/). #### Beams  #### Binarypath  #### Blackhole  #### Bubbles  #### Burn  #### Decrypt  #### Fireworks  #### Matrix  #### Orbittingvolley  #### Pour  #### Print  #### Rain  #### Rings  #### Slide  #### Spotlights  #### VHSTape  #### Waves  ## In-Development Preview Any effects shown below are in development and will be available in the next release. ## Latest Release Notes Visit the [ChangeBlog](https://chrisbuilds.github.io/terminaltexteffects/changeblog/changeblog/) for release write-ups. ### New Features (0.12.0) --- #### New Effects (0.12.0) * Highlight - Run a specular highlight across the text. Highlight direction, brightness, and width can be specified. * Laseretch - A laser travels across the terminal, etching characters and emitting sparks. * Sweep - Sweep across the canvas to reveal uncolored text, reverse sweep to color the text. #### New Engine Features (0.12.0) * Background color specification is supported throughout the engine. Methods which accept Color arguments expect a `ColorPair` object to specify both the foreground and background color. * New `EventHandler.Action`: `Action.RESET_APPEARANCE` will reset the character appearance to the input character with no modifications. This eliminates the need to make a `Scene` for this purpose. * Existing 8/24 bit color sequences in the input data are parsed and handled by the engine. A new `TerminalConfig` option `--existing-color-handling` is used to control how these sequences are handled. * `easing.eased_step_function()` allows easing functions to be used generically by returning a closure that produces an eased value based on the easing function and step size provided when called. * A new easing function has been added which returns a custom easing fuction based on cubic bezier controls. * Added custom exceptions. ### Changes (0.12.0) --- #### Effects Changes (0.12.0) * Spotlights - The maximum size of the beam is limited to the smaller of the two canvas dimensions and the minimum size is limited to 1. * Spray - Argument spray_volume is limited to 0 < n <= 1. * Colorshift - `--loop` has been renamed `--no-loop`. Looping the gradient is now default. * All effects which apply a gradient across the text build the gradient mapping based on the text dimensions regardless of the canvas size. This fixes truncated gradients where parts of the gradient map were assigned to empty coordinates. * Some effects support dynamic handling of color sequences in the input data. * Blackhole - Star characters changed to ASCII only to improve supported fonts. #### Engine Changes (0.12.0) * Frame rate timing is enforced within the `BaseEffectIterator` when accessing the `frame` property, rather than within the `Terminal` on calls to `print()`. This enables frame timing when iterating without requiring the use of the `terminal_output()` context manager. * The frame rate can be set to `0` to run without a limit. * Removed unused method Segment.get_coord_on_segment(). * Activating a Path with no segments will raise a ValueError. * `base_effect.active_characters` was refactored from a list to a set. * Bezier curves are no longer limited to two control points. Any number of control points can be specified in calls to `Path.new_waypoint()`, however, performance may suffer with large numbers of control points along unique paths. * Caching has been implemented for all geometry functions significantly improving performance in cases where many characters are traveling along the same Path. * Reorganized the most common API class imports up to the package level. * Moved the SyncMetric Enum from the Animation module top level into the Scene class. * `Scene.apply_gradient_symbols()` accepts two gradients, one for the foreground and one for the background. ### Bug Fixes (0.12.0) --- #### Effects Fixes (0.12.0) * VHSTape - Fixed glitch wave lines not appearing for some canvas/input_text size ratios. * Fireworks - Fixed launch_delay set to 0 causing an infinite loop. * Spotlights - Fixed infinite loop caused by very small beam_width_ratio values. * Overflow - Fixed effect ignoring `--final-gradient-direction` argument. #### Engine Fixes (0.12.0) * Fixed Color() objects not treating rgb colors initialized with/without the hash as equal. Ex: Color('#ffffff') and Color('ffffff') * Gradients initialized with a tuple of steps including the value 0 will raise a ValueError as expected. Ex: Gradient(Color('ff0000'), Color('00ff00'), Color('0000ff'), steps=(4,0)) * Fixed infinite loop when a new scene is created without an id and a scene has been deleted resuling in the length of the scenes dict corresponding to an existing scene id. * Fixed `Canvas` center calculations being off by one for odd widths/heights due to floor division. * Fixed `Gradient.get_color_at_fraction` rounding resulting in over-representing colors in the middle of the spectrum. * `Gradient.build_coordinate_color_mapping` signature changed to required full bounding box specification. This allows the effect to selectively build based on the text/canvas/terminal dimensions and reduces build time by by reducing the map size when possible. * Adds a call to `ansitools.dec_save_cursor_position` after each call to `ansitools.dec_restore_cursor_position` to address some terminals clearing the saved data after the restore. #### Other (0.12.0) * Fixed Canvas width/height docstrings and help output to correctly indicate 0/-1 matching terminal device/input text. --- ## License Distributed under the MIT License. See [LICENSE](https://github.com/ChrisBuilds/terminaltexteffects/blob/main/LICENSE.md) for more information. ", Assign "at most 3 tags" to the expected json: {"id":"10482","tags":[]} "only from the tags list I provide: [{"id":77,"name":"3d"},{"id":89,"name":"agent"},{"id":17,"name":"ai"},{"id":54,"name":"algorithm"},{"id":24,"name":"api"},{"id":44,"name":"authentication"},{"id":3,"name":"aws"},{"id":27,"name":"backend"},{"id":60,"name":"benchmark"},{"id":72,"name":"best-practices"},{"id":39,"name":"bitcoin"},{"id":37,"name":"blockchain"},{"id":1,"name":"blog"},{"id":45,"name":"bundler"},{"id":58,"name":"cache"},{"id":21,"name":"chat"},{"id":49,"name":"cicd"},{"id":4,"name":"cli"},{"id":64,"name":"cloud-native"},{"id":48,"name":"cms"},{"id":61,"name":"compiler"},{"id":68,"name":"containerization"},{"id":92,"name":"crm"},{"id":34,"name":"data"},{"id":47,"name":"database"},{"id":8,"name":"declarative-gui "},{"id":9,"name":"deploy-tool"},{"id":53,"name":"desktop-app"},{"id":6,"name":"dev-exp-lib"},{"id":59,"name":"dev-tool"},{"id":13,"name":"ecommerce"},{"id":26,"name":"editor"},{"id":66,"name":"emulator"},{"id":62,"name":"filesystem"},{"id":80,"name":"finance"},{"id":15,"name":"firmware"},{"id":73,"name":"for-fun"},{"id":2,"name":"framework"},{"id":11,"name":"frontend"},{"id":22,"name":"game"},{"id":81,"name":"game-engine "},{"id":23,"name":"graphql"},{"id":84,"name":"gui"},{"id":91,"name":"http"},{"id":5,"name":"http-client"},{"id":51,"name":"iac"},{"id":30,"name":"ide"},{"id":78,"name":"iot"},{"id":40,"name":"json"},{"id":83,"name":"julian"},{"id":38,"name":"k8s"},{"id":31,"name":"language"},{"id":10,"name":"learning-resource"},{"id":33,"name":"lib"},{"id":41,"name":"linter"},{"id":28,"name":"lms"},{"id":16,"name":"logging"},{"id":76,"name":"low-code"},{"id":90,"name":"message-queue"},{"id":42,"name":"mobile-app"},{"id":18,"name":"monitoring"},{"id":36,"name":"networking"},{"id":7,"name":"node-version"},{"id":55,"name":"nosql"},{"id":57,"name":"observability"},{"id":46,"name":"orm"},{"id":52,"name":"os"},{"id":14,"name":"parser"},{"id":74,"name":"react"},{"id":82,"name":"real-time"},{"id":56,"name":"robot"},{"id":65,"name":"runtime"},{"id":32,"name":"sdk"},{"id":71,"name":"search"},{"id":63,"name":"secrets"},{"id":25,"name":"security"},{"id":85,"name":"server"},{"id":86,"name":"serverless"},{"id":70,"name":"storage"},{"id":75,"name":"system-design"},{"id":79,"name":"terminal"},{"id":29,"name":"testing"},{"id":12,"name":"ui"},{"id":50,"name":"ux"},{"id":88,"name":"video"},{"id":20,"name":"web-app"},{"id":35,"name":"web-server"},{"id":43,"name":"webassembly"},{"id":69,"name":"workflow"},{"id":87,"name":"yaml"}]" returns me the "expected json"