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P_2_2_1_01.pde
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P_2_2_1_01.pde
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// P_2_2_1_01.pde
//
// 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 the path of a stupid agent
*
* MOUSE
* position x : drawing speed
*
* KEYS
* BACKSPACE : delete display
* s : save png
* r : start pdf recording
* e : stop pdf recording
*/
import processing.pdf.*;
import java.util.Calendar;
boolean recordPDF = false;
int NORTH = 0;
int NORTHEAST = 1;
int EAST = 2;
int SOUTHEAST = 3;
int SOUTH = 4;
int SOUTHWEST = 5;
int WEST = 6;
int NORTHWEST= 7;
float stepSize = 1;
float diameter = 1;
int direction;
float posX, posY;
void setup() {
size(800, 800);
background(255);
smooth();
noStroke();
posX = width/2;
posY = height/2;
}
void draw() {
for (int i=0; i<=mouseX; i++) {
direction = (int) random(0, 8);
if (direction == NORTH) {
posY -= stepSize;
}
else if (direction == NORTHEAST) {
posX += stepSize;
posY -= stepSize;
}
else if (direction == EAST) {
posX += stepSize;
}
else if (direction == SOUTHEAST) {
posX += stepSize;
posY += stepSize;
}
else if (direction == SOUTH) {
posY += stepSize;
}
else if (direction == SOUTHWEST) {
posX -= stepSize;
posY += stepSize;
}
else if (direction == WEST) {
posX -= stepSize;
}
else if (direction == NORTHWEST) {
posX -= stepSize;
posY -= stepSize;
}
if (posX > width) posX = 0;
if (posX < 0) posX = width;
if (posY < 0) posY = height;
if (posY > height) posY = 0;
fill(0, 40);
ellipse(posX+stepSize/2, posY+stepSize/2, diameter, diameter);
}
}
void keyReleased(){
if (key == DELETE || key == BACKSPACE) background(255);
if (key == 's' || key == 'S') saveFrame(timestamp()+"_##.png");
// ------ pdf export ------
// press 'r' to start pdf recording and 'e' to stop it
// ONLY by pressing 'e' the pdf is saved to disk!
if (key =='r' || key =='R') {
if (recordPDF == false) {
beginRecord(PDF, timestamp()+".pdf");
println("recording started");
recordPDF = true;
background(255);
noStroke();
posX = width/2;
posY = height/2;
}
}
else if (key == 'e' || key =='E') {
if (recordPDF) {
println("recording stopped");
endRecord();
recordPDF = false;
background(255);
}
}
}
// timestamp
String timestamp() {
Calendar now = Calendar.getInstance();
return String.format("%1$ty%1$tm%1$td_%1$tH%1$tM%1$tS", now);
}