Shuffling Typography Animation

import { preloadFonts } from './utils';
import { TypeShuffle } from './typeShuffle';

preloadFonts('biu0hfr').then(() => {
    document.body.classList.remove('loading');

    const textElement = document.querySelector('.content');
    
    const ts = new TypeShuffle(textElement);
    ts.trigger('fx1');

    [...document.querySelectorAll('.effects > button')].forEach(button => {
        button.addEventListener('click', () => {
            ts.trigger(`fx${button.dataset.fx}`);
        });
    });

});

import 'splitting/dist/splitting.css';
import 'splitting/dist/splitting-cells.css';
import Splitting from 'splitting';
import { randomNumber } from './utils';

/**
 * Class representing one line
 */
class Line {
	// line position
    position = -1;
    // cells/chars
    cells = [];

	/**
	 * Constructor.
	 * @param {Element} DOM_el - the char element (<span>)
	 */
	constructor(linePosition) {
		this.position = linePosition;
	}
}

/**
 * Class representing one cell/char
 */
class Cell {
	// DOM elements
	DOM = {
		// the char element (<span>)
		el: null,
	};
    // cell position
    position = -1;
    // previous cell position
    previousCellPosition = -1;
    // original innerHTML
    original;
    // current state/innerHTML
    state;
    color;
    originalColor;
    // cached values
    cache;

	/**
	 * Constructor.
	 * @param {Element} DOM_el - the char element (<span>)
	 */
	constructor(DOM_el, {
        position,
        previousCellPosition
    } = {}) {
		this.DOM.el = DOM_el;
        this.original = this.DOM.el.innerHTML;
        this.state = this.original;
        this.color = this.originalColor = getComputedStyle(document.documentElement).getPropertyValue('--color-text');
        this.position = position;
        this.previousCellPosition = previousCellPosition;
	}
    /**
     * @param {string} value
     */
    set(value) {
        this.state = value;
        this.DOM.el.innerHTML = this.state;
    }
}

/**
 * Class representing the TypeShuffle object
 */
export class TypeShuffle {
	// DOM elements
	DOM = {
		// the main text element
		el: null,
	};
    // array of Line objs
    lines = [];
    // array of letters and symbols
    lettersAndSymbols = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '!', '@', '#', '$', '&', '*', '(', ')', '-', '_', '+', '=', '/', '[', ']', '{', '}', ';', ':', '<', '>', ',', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
    // effects and respective methods
    effects = {
        'fx1': () => this.fx1(),
        'fx2': () => this.fx2(),
        'fx3': () => this.fx3(),
        'fx4': () => this.fx4(),
        'fx5': () => this.fx5(),
        'fx6': () => this.fx6(),
    };
    totalChars = 0;

	/**
	 * Constructor.
	 * @param {Element} DOM_el - main text element
	 */
	constructor(DOM_el) {
        this.DOM.el = DOM_el;
        // Apply Splitting (two times to have lines, words and chars)
        const results = Splitting({
            target: this.DOM.el,
            by: 'lines'
        })
        results.forEach(s => Splitting({ target: s.words }));
        
        // for every line
        for (const [linePosition, lineArr] of results[0].lines.entries()) {
            // create a new Line
            const line = new Line(linePosition);
            let cells = [];
            let charCount = 0;
            // for every word of each line
            for (const word of lineArr) {
                // for every character of each line
                for (const char of [...word.querySelectorAll('.char')]) {
                    cells.push(
                        new Cell(char, {
                            position: charCount,
                            previousCellPosition: charCount === 0 ? -1 : charCount-1
                        })
                    );
                    ++charCount;
                }
            }
            line.cells = cells;
            this.lines.push(line);
            this.totalChars += charCount;
        }

        // TODO
        // window.addEventListener('resize', () => this.resize());
	}
    /**
     * clear all the cells chars
     */
    clearCells() {
        for (const line of this.lines) {
            for (const cell of line.cells) {
                cell.set('&nbsp;');
            }    
        }
    }
    /**
     * 
     * @returns {string} a random char from this.lettersAndSymbols
     */
    getRandomChar() {
        return this.lettersAndSymbols[Math.floor(Math.random() * this.lettersAndSymbols.length)];
    }
    /**
     * Effect 1 - clear cells and animate each line cells (delays per line and per cell)
     */
    fx1() {
        // max iterations for each cell to change the current value
        const MAX_CELL_ITERATIONS = 45;
        
        let finished = 0;

        // clear all cells values
        this.clearCells();
        
        // cell's loop animation
        // each cell will change its value MAX_CELL_ITERATIONS times
        const loop = (line, cell, iteration = 0) => {
            // cache the previous value
            cell.cache = cell.state;

            // set back the original cell value if at the last iteration
            if ( iteration === MAX_CELL_ITERATIONS-1 ) {
                cell.set(cell.original);
                ++finished;
                if ( finished === this.totalChars ) {
                    this.isAnimating = false;
                }
            }
            // if the cell is the first one in its line then generate a random char
            else if ( cell.position === 0 ) {
                // show specific characters for the first 9 iterations (looks cooler)
                cell.set(iteration < 9 ? 
                        ['*', '-', '\u0027', '\u0022'][Math.floor(Math.random() * 4)] : 
                        this.getRandomChar());
            }
            // get the cached value of the previous cell. 
            // This will result in the illusion that the chars are sliding from left to right
            else {
                cell.set(line.cells[cell.previousCellPosition].cache);
            }
            
            // doesn't count if it's an empty space
            if ( cell.cache != '&nbsp;' ) {
                ++iteration;
            }

            // repeat...
            if ( iteration < MAX_CELL_ITERATIONS ) {
                setTimeout(() => loop(line, cell, iteration), 15);
            }
        };

        // set delays for each cell animation
        for (const line of this.lines) {
            for (const cell of line.cells) {
                setTimeout(() => loop(line, cell), (line.position+1)*200);
            }
        }
    }
    fx2() {
        const MAX_CELL_ITERATIONS = 20;
        let finished = 0;
        const loop = (line, cell, iteration = 0) => {
            if ( iteration === MAX_CELL_ITERATIONS-1 ) {
                cell.set(cell.original);
                cell.DOM.el.style.opacity = 0;
                setTimeout(() => {
                    cell.DOM.el.style.opacity = 1;
                }, 300);

                ++finished;
                if ( finished === this.totalChars ) {
                    this.isAnimating = false;
                }
            }
            else {
                cell.set(this.getRandomChar());
            }

            ++iteration;
            if ( iteration < MAX_CELL_ITERATIONS ) {
                setTimeout(() => loop(line, cell, iteration), 40);
            }
        };

        for (const line of this.lines) {
            for (const cell of line.cells) {
                setTimeout(() => loop(line, cell), (cell.position+1)*30);
            }
        }
    }
    fx3() {
        const MAX_CELL_ITERATIONS = 10;
        let finished = 0;
        this.clearCells();

        const loop = (line, cell, iteration = 0) => {
            if ( iteration === MAX_CELL_ITERATIONS-1 ) {
                cell.set(cell.original);
                ++finished;
                if ( finished === this.totalChars ) {
                    this.isAnimating = false;
                }
            }
            else {
                cell.set(this.getRandomChar());
            }

            ++iteration;
            if ( iteration < MAX_CELL_ITERATIONS ) {
                setTimeout(() => loop(line, cell, iteration), 80);
            }
        };

        for (const line of this.lines) {
            for (const cell of line.cells) {
                setTimeout(() => loop(line, cell), randomNumber(0,2000));
            }
        }
    }
    fx4() {
        const MAX_CELL_ITERATIONS = 30;
        let finished = 0;
        this.clearCells();

        const loop = (line, cell, iteration = 0) => {
            cell.cache = cell.state;

            if ( iteration === MAX_CELL_ITERATIONS-1 ) {
                cell.set(cell.original);
                
                ++finished;
                if ( finished === this.totalChars ) {
                    this.isAnimating = false;
                }
            }
            else if ( cell.position === 0 ) {
                cell.set(['*',':'][Math.floor(Math.random() * 2)]);
            }
            else {
                cell.set(line.cells[cell.previousCellPosition].cache);
            }
            
            if ( cell.cache != '&nbsp;' ) {
                ++iteration;
            }

            if ( iteration < MAX_CELL_ITERATIONS ) {
                setTimeout(() => loop(line, cell, iteration), 15);
            }
        };

        for (const line of this.lines) {
            for (const cell of line.cells) {
                setTimeout(() => loop(line, cell), Math.abs(this.lines.length/2-line.position)*400);
            }
        }
    }
    fx5() {
        // max iterations for each cell to change the current value
        const MAX_CELL_ITERATIONS = 30;
        let finished = 0;
        this.clearCells();
        
        const loop = (line, cell, iteration = 0) => {
            cell.cache = {'state': cell.state, 'color': cell.color};
            
            if ( iteration === MAX_CELL_ITERATIONS-1 ) {
                cell.color = cell.originalColor;
                cell.DOM.el.style.color = cell.color;
                cell.set(cell.original);

                ++finished;
                if ( finished === this.totalChars ) {
                    this.isAnimating = false;
                }
            }
            else if ( cell.position === 0 ) {
                cell.color = ['#3e775d', '#61dca3', '#61b3dc'][Math.floor(Math.random() * 3)]
                cell.DOM.el.style.color = cell.color
                cell.set(iteration < 9 ? 
                        ['*', '-', '\u0027', '\u0022'][Math.floor(Math.random() * 4)] : 
                        this.getRandomChar());
            }
            else {
                cell.set(line.cells[cell.previousCellPosition].cache.state);
                
                cell.color = line.cells[cell.previousCellPosition].cache.color
                cell.DOM.el.style.color = cell.color
            }
            
            if ( cell.cache.state != '&nbsp;' ) {
                ++iteration;
            }

            if ( iteration < MAX_CELL_ITERATIONS ) {
                setTimeout(() => loop(line, cell, iteration), 10);
            }
        };

        for (const line of this.lines) {
            for (const cell of line.cells) {
                setTimeout(() => loop(line, cell), (line.position+1)*200);
            }
        }
    }
    fx6() {
        // max iterations for each cell to change the current value
        const MAX_CELL_ITERATIONS = 15;
        let finished = 0;
        const loop = (line, cell, iteration = 0) => {
            cell.cache = {'state': cell.state, 'color': cell.color};

            if ( iteration === MAX_CELL_ITERATIONS-1 ) {
                cell.set(cell.original);

                cell.color = cell.originalColor;
                cell.DOM.el.style.color = cell.color;

                ++finished;
                if ( finished === this.totalChars ) {
                    this.isAnimating = false;
                }
            }
            else {
                cell.set(this.getRandomChar());
                
                cell.color = ['#2b4539', '#61dca3', '#61b3dc'][Math.floor(Math.random() * 3)]
                cell.DOM.el.style.color = cell.color
            }

            ++iteration;
            if ( iteration < MAX_CELL_ITERATIONS ) {
                setTimeout(() => loop(line, cell, iteration), randomNumber(30,110));
            }
        };

        for (const line of this.lines) {
            for (const cell of line.cells) {
                setTimeout(() => loop(line, cell), (line.position+1)*80);
            }
        }
    }
    /**
     * call the right effect method (defined in this.effects)
     * @param {string} effect - effect type
     */
    trigger(effect = 'fx1') {
        if ( !(effect in this.effects) || this.isAnimating ) return;
        this.isAnimating = true;
        this.effects[effect]();
    }
}

// Preload images
const preloadFonts = id => {
    return new Promise((resolve) => {
        WebFont.load({
            typekit: {
                id: id
            },
            active: resolve
        });
    });
};

const randomNumber = (min, max) => Math.floor(Math.random() * (max - min + 1)) + min;

export {
    preloadFonts,
    randomNumber
}

README.md
## License
[MIT](LICENSE)

Made with :blue_heart:  by [Codrops](http://www.codrops.com)

MIT License

Copyright (c) 2009 - 2022 [Codrops](https://tympanus.net/codrops)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

splitting@1.1.0 — LICENSE.md
MIT License

Copyright (c) 2018 Stephen Shaw

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.