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// P_2_3_3_01
//
// Generative Gestaltung, ISBN: 978-3-87439-759-9
// First Edition, Hermann Schmidt, Mainz, 2009
// Hartmut Bohnacker, Benedikt Gross, Julia Laub, Claudius Lazzeroni
// Copyright 2009 Hartmut Bohnacker, Benedikt Gross, Julia Laub, Claudius Lazzeroni
//
// http://www.generative-gestaltung.de
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* draw tool. shows how to draw with dynamic elements.
*
* MOUSE
* drag : draw with text
*
* KEYS
* del, backspace : clear screen
* arrow up : angle distortion +
* arrow down : angle distortion -
* s : save png
*/
var x = 0, y = 0;
var stepSize = 5.0;
var letters = "Mon propos dans les pages qui suivent a plutôt été de décrire le reste : ce que l'on ne note généralement pas, ce qui ne se remarque pas, ce qui n'a pas d'importance : ce qui se passe quand il ne se passe rien, sinon du temps, des gens, des voitures et des nuages.";
var fontSizeMin = 3;
var angleDistortion = 0.0;
var counter = 0;
function setup() {
// use full screen size
createCanvas(600, 600);
background(255);
smooth();
cursor(CROSS);
x = mouseX;
y = mouseY;
textAlign(LEFT);
fill(0);
}
function draw() {
if (mouseIsPressed) {
var d = dist(x,y, mouseX,mouseY);
textFont('Georgia');
textSize(fontSizeMin+d/2)
var newLetter = letters.charAt(counter);;
stepSize = textWidth(newLetter);
if (d > stepSize) {
var angle = atan2(mouseY-y, mouseX-x);
push();
translate(x, y);
rotate(angle + random(angleDistortion));
text(newLetter, 0, 0);
pop();
counter++;
if (counter > letters.length-1) counter = 0;
x = x + cos(angle) * stepSize;
y = y + sin(angle) * stepSize;
}
}
}
function mousePressed() {
x = mouseX;
y = mouseY;
}
function keyTyped() {
if (key == 's' || key == 'S') save("P_2_3_3_01.png");
}
function keyPressed() {
// angleDistortion ctrls arrowkeys up/down
if (keyCode == DELETE || keyCode == BACKSPACE) background(255);
if (keyCode == UP_ARROW) angleDistortion += 0.1;
if (keyCode == DOWN_ARROW) angleDistortion -= 0.1;
}