Digital Bauhaus Vorkurs/Projekte/Tobias: Difference between revisions

Digital Bauhaus Vorkurs/Projekte/Tobias (view source)

Revision as of 13:45, 26 January 2011

2,726 bytes added , 26 January 2011

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@@ Line 154: / Line 154: @@
 }
 </source>
+-------
+Man sieht einen Kreis in der Mitte des Fensters. Im Laufe der Zeit verfremdet sich der Kreis zufällig.
+[[File:verfremdeterkreis.jpg|300px]]
+<source lang="java">
+import processing.pdf.*;
+boolean recordPDF = false;
+int formResolution = 15;
+int stepSize = 1;
+float distorsionFactor = 1;
+float initRadius = 150;
+float centerX, centerY;
+float[] x = new float[formResolution];
+float[] y = new float[formResolution];
+boolean filled = false;
+boolean pause = false;
+void setup(){
+  size(700, 700);
+  smooth();
+  // init form
+  centerX = width/2;
+  centerY = height/2;
+  float angle = radians(360/float(formResolution));
+  for (int i=0; i<formResolution; i++){
+    x[i] = cos(angle*i) * initRadius;
+    y[i] = sin(angle*i) * initRadius;
+  }
+  stroke(3);
+  background(255);
+}
+void draw(){
+   background(255);
+  // calculate new points
+  for (int i=0; i<formResolution; i++){
+    x[i] += random(-stepSize,stepSize);
+    y[i] += random(-stepSize,stepSize);
+    // ellipse(x[i], y[i], 5, 5);
+  }
+  beginShape();
+  // Start Kontrollpunkte
+  curveVertex(x[formResolution-1]+centerX, y[formResolution-1]+centerY);
+  // nur die Kontrollpunkte werden gezeichnet
+  for (int i=0; i<formResolution; i++){
+    curveVertex(x[i]+centerX, y[i]+centerY);
+  }
+  curveVertex(x[0]+centerX, y[0]+centerY);
+  // Ende Kontrollpunkte
+  curveVertex(x[1]+centerX, y[1]+centerY);
+  endShape();
+}
+// events
+void mousePressed() {
+  //init form on mouse position
+  centerX = mouseX;
+  centerY = mouseY;
+  float angle = radians(360/float(formResolution));
+  float radius = initRadius * random(0.5,1.0);
+  for (int i=0; i<formResolution; i++){
+    x[i] = cos(angle*i) * radius;
+    y[i] = sin(angle*i) * radius;
+  }
+}
+void keyReleased() {
+  if (key == 's' || key == 'S') saveFrame(timestamp()+"_##.png");
+  if (key == DELETE || key == BACKSPACE) background(255);
+  if (key == '1') filled = false;
+  if (key == '2') filled = true;
+  // ------ 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;
+      stroke(0, 50);
+    }
+  }
+  else if (key == 'e' || key =='E') {
+    if (recordPDF) {
+      println("recording stopped");
+      endRecord();
+      recordPDF = false;
+      background(255);
+    }
+  }
+  // switch draw loop on/off
+  if (key == 'p' || key == 'P') pause = !pause;
+  if (pause == true) noLoop();
+  else loop();
+}
+// timestamp
+String timestamp() {
+  Calendar now = Calendar.getInstance();
+  return String.format("%1$ty%1$tm%1$td_%1$tH%1$tM%1$tS", now);
+}
+</source>
+-------