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// P_3_1_3_02
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//
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// Generative Gestaltung – Creative Coding im Web
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// ISBN: 978-3-87439-902-9, First Edition, Hermann Schmidt, Mainz, 2018
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// Benedikt Groß, Hartmut Bohnacker, Julia Laub, Claudius Lazzeroni
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// with contributions by Joey Lee and Niels Poldervaart
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// Copyright 2018
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//
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// http://www.generative-gestaltung.de
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/**
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* analysing and sorting the letters of a text
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* connecting subsequent letters with lines
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*
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* MOUSE
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* position x : interpolate between normal text and sorted position
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*
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* KEYS
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* 1 : toggle lines on/off
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* 2 : toggle text on/off
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* 3 : switch all letters off
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* 4 : switch all letters on
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* a-z : switch letter on/off
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* CONTROL : save png
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*/
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'use strict';
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var joinedText;
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var alphabet;
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var drawLetters = [];
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var posX;
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var posY;
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var drawLines = false;
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var drawText = true;
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function preload() {
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joinedText = loadStrings('data/library_babel_extract1.txt');
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}
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function setup() {
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createCanvas(1920, windowHeight);
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textFont('monospace', 30);
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fill(0);
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joinedText = joinedText.join(' ');
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alphabet = getUniqCharacters();
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for (var i = 0; i < alphabet.length; i++) {
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drawLetters[i] = true;
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}
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}
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function draw() {
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background(213,204,255);
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posX = 20;
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posY = 40;
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var oldX = 0;
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var oldY = 0;
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// go through all characters in the text to draw them
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for (var i = 0; i < joinedText.length; i++) {
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// again, find the index of the current letter in the character set
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var upperCaseChar = joinedText.charAt(i).toUpperCase();
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var index = alphabet.indexOf(upperCaseChar);
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if (index < 0) continue;
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var sortY = index * 20 + 40;
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var m = map(mouseX, 50, width - 50, 0, 1);
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m = constrain(m, 0, 1);
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var interY = lerp(posY, sortY, m);
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if (drawLetters[index]) {
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if (drawLines) {
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if (oldX != 0 && oldY != 0) {
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stroke(181, 157, 0, 100);
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line(oldX, oldY, posX, interY);
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}
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oldX = posX;
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oldY = interY;
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}
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if (drawText) {
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noStroke();
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text(joinedText.charAt(i), posX, interY);
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}
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} else {
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oldX = 0;
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oldY = 0;
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}
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posX += textWidth(joinedText.charAt(i));
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if (posX >= width - 200 && upperCaseChar == ' ') {
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posY += 30;
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posX = 20;
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}
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}
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}
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function getUniqCharacters() {
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var charsArray = joinedText.toUpperCase().split('');
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var uniqCharsArray = charsArray.filter(function(char, index) {
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return charsArray.indexOf(char) == index;
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}).sort();
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return uniqCharsArray.join('');
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}
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function keyReleased() {
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if (keyCode == CONTROL) saveCanvas(gd.timestamp(), 'png');
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if (key == '1') drawLines = !drawLines;
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if (key == '2') drawText = !drawText;
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if (key == '3') {
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for (var i = 0; i < alphabet.length; i++) {
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drawLetters[i] = false;
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}
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}
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if (key == '4') {
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drawText = true;
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for (var i = 0; i < alphabet.length; i++) {
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drawLetters[i] = true;
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}
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}
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var index = alphabet.indexOf(key.toUpperCase());
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if (index >= 0) {
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drawLetters[index] = !drawLetters[index];
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}
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}
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