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// P_3_1_3_01
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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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* changing the letters alpha value in relation to frequency
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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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* a : toggle alpha mode
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* s : save png
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*/
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'use strict';
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var joinedText;
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var alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ,.;!? ';
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var counters = [];
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var posX;
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var posY;
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var drawAlpha = 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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noStroke();
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textFont('monospace', 30);
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joinedText = joinedText.join(' ');
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// use the following command, to collect all characters in the text automatically
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// alphabet = getUniqCharacters();
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for (var i = 0; i < alphabet.length; i++) {
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counters[i] = 0;
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}
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countCharacters();
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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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// 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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if (drawAlpha) {
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fill(0, counters[index] * 3);
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} else {
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fill(0);
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}
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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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text(joinedText.charAt(i), posX, interY);
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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 countCharacters() {
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for (var i = 0; i < joinedText.length; i++) {
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// get one character from the text and turn it to uppercase
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var c = joinedText.charAt(i);
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var upperCaseChar = c.toUpperCase();
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var index = alphabet.indexOf(upperCaseChar);
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// increase the respective counter
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if (index >= 0) counters[index]++;
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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 (key == 's' || key == 'S') saveCanvas(gd.timestamp(), 'png');
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if (key == 'a' || key == 'A') drawAlpha = !drawAlpha;
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}
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