Processing 1.0 - Processing Discourse - Processing combined effort

koogy

Re: Processing combined effort
Reply #30 - Feb 20^th, 2010, 3:55am

my first attempt with the logo, just 20 lines i knocked up so i could work on the sketch switching, suffered from the P3D texture problem quite badly (the fact it had a border complicated things too)

Code:


PImage logo;

void setup() {
  size(640, 480, P3D);
  logo = loadImage("loading.gif");
  imageMode(CENTER);
  noFill();
  stroke(255);
}

void draw() {
  background(255);
  translate(width / 2, height / 2);
  pushMatrix();
  float f = frameCount;
  rotateY(f / 25);
  scale(3 - 2 * cos(f / 20));  // f(0) must = 1
  image(logo, 0, 0, logo.width, logo.height);
  popMatrix();
}

there are ways around that, i know, but using an ellipse instead would help.

Code:


public static float RAD = 25;

void setup() {
  size(640, 480, P3D);
  ellipseMode(CENTER);
  fill(255);
  stroke(255);
}

void draw() {
  background(0);
  translate(width / 2, height / 2); // move origin to centre
  pushMatrix();
  float f = frameCount;
  rotateY(f / 25);
  scale(3 - 2 * cos(f / 20));  // f(0) must = 1
  ellipse(0, 0, RAD, RAD);
  popMatrix();
}

but that looks too pixely and adding smooth() shows up the segments.

there's also the issue of movement. it's all very well having a dot in the middle but if the one sketch ends with it travelling up/down and the next starts with it speeding left/right then the transition will jar badly. need to think about continuity.

Cedric

Re: Processing combined effort
Reply #31 - Feb 20^th, 2010, 4:03am

Quote:

there's also the issue of movement. it's all very well having a dot in the middle but if the one sketch ends with it travelling up/down and the next starts with it speeding left/right then the transition will jar badly. need to think about continuity.

sure but you would have the same problem when using an image. but i guess thats something we have to deal with

twitter.com/CedricKiefer

koogy

Re: Processing combined effort
Reply #32 - Feb 20^th, 2010, 5:28am

my idea of picking up all the inner classes beginning with a known prefix and using those randomly has fallen at the first hurdle. i need to call this.class.getDeclaredClasses() but this is just giving me an error:

Class c = this.class;

expecting SEMI, found 'c'
processing.app.debug.RunnerException: Syntax error, maybe a missing semicolon?
at processing.app.Sketch.preprocess(Sketch.java:1350)
at processing.app.Sketch.preprocess(Sketch.java:1194)
at processing.app.Sketch.build(Sketch.java:1480)
at processing.app.Sketch.compile(Sketch.java:1174)
at processing.app.Editor.handleRun(Editor.java:1644)
...

it seems to want a semicolon after Class, which is nonsense.

koogy

Re: Processing combined effort
Reply #33 - Feb 20^th, 2010, 5:36am

whereas this is fine in netbeans:

Code:


public class Main {
    public static void main(String[] args) {
	  Class[] classes = Main.class.getDeclaredClasses();
	  for (Class c : classes) {
		System.out.println("Class: " + c.getCanonicalName());
	  }
    }
    // noddy inner classes
    class internalClass1 {}
    class internalClass2 {}
}

(have to use Main.class here as it's static which isn't the case with processing. and that uses java 1.5 syntax for the for loop but....)

yelele_eu

Re: Processing combined effort
Reply #34 - Feb 20^th, 2010, 7:04am

koogy wrote on Feb 20^th, 2010, 5:28am:

(...)
Class c = this.class;

expecting SEMI, found 'c'
processing.app.debug.RunnerException: Syntax error, maybe a missing semicolon
at processing.app.Sketch.preprocess(Sketch.java:1350)
at processing.app.Sketch.preprocess(Sketch.java:1194)
at processing.app.Sketch.build(Sketch.java:1480)
at processing.app.Sketch.compile(Sketch.java:1174)
at processing.app.Editor.handleRun(Editor.java:1644)
...

it seems to want a semicolon after Class, which is nonsense.

(maybe it's not the rigth place for that kind of post)
Class c = this.getClass();
Work better no

andrewowaun Full Member Offline Posts: 202 Barbados	Re: Processing combined effort Reply #35 - Feb 20^th, 2010, 3:42pm If any one knows how to add a poll function, they can post a reply.

Cedric God Member Offline Posts: 1838	Re: Processing combined effort Reply #36 - Feb 20^th, 2010, 4:35pm i guess you have to start the threat with a poll
	twitter.com/CedricKiefer

yconst

Re: Processing combined effort
Reply #37 - Feb 20^th, 2010, 5:01pm

Cedric wrote on Feb 20^th, 2010, 4:03am:

[quote]there's also the issue of movement. it's all very well having a dot in the middle but if the one sketch ends with it travelling up/down and the next starts with it speeding left/right then the transition will jar badly. need to think about continuity.

It is possible that a few static frames could be taken into account in the beginning and end of each sketch, so that any starting and ending should gradually conform to a still spot/shape/image. Could be 3-9 frames max... This way each contributor can handle his part of the transition without worrying about the other part. Of course if there are cases of intended transitions of another type, this could be ignored.

Yiannis Chatzikonstantinou
volatile prototypes

bit.craft

Re: Processing combined effort
Reply #38 - Feb 21^st, 2010, 4:41am

Here is a little showreel snippet that finds all sketches using introspection and then switches between them every 6 seconds ...
Maybe we could use it to stitch everything together ...

Code:

import java.lang.reflect.Constructor;

final int W = 640, H = 480, BG = #000000, fps = 30, seconds = 6;
boolean export = true;
PApplet[] sketches;
String[] names;
int s;


void setup() {
  
  size(W, H);
  Class[] classes = getClass().getDeclaredClasses();
  int n = classes.length;
  sketches = new PApplet[n];
  names = new String[n];
  
  for(int i=0; i<n; i++) {
    try {
      Constructor c = classes[i].getDeclaredConstructor(getClass());
      sketches[i] = (PApplet) c.newInstance(this);
      sketches[i].init();  
      names[i] = split(c.getName(), "$")[1];    
    } catch (Exception e) {}
  }
  
  frameRate(fps);
}


void draw() {
 
  if(frameCount % (seconds * fps) == 1) {
    
    // stop running sketch
    if(frameCount>1) {
      println("stopping " + names[s]);
      sketches[s].stop();
      s = (s+1) % sketches.length;
    }
    
    // start next sketch
    println("starting " + names[s]);
    sketches[s].run();
  }

  sketches[s].handleDraw();
  PImage img = sketches[s].get();
  img.loadPixels();
  image(img, 0, 0);
  if(export && frameCount <= fps*seconds*sketches.length) saveFrame("showreel-#####.png");
     
}

« Last Edit: Feb 21^st, 2010, 5:48am by bit.craft »

bit.craft

Re: Processing combined effort
Reply #39 - Feb 21^st, 2010, 4:50am

Just add those template sketches to try it out ...

Code:


class Sketch1 extends PApplet {
  void setup() {
    size(W, H);
  }
  void draw()  {
    background(BG); 
    ellipse(W/2, H/2, 20, 20);
  } 
}

class Sketch2 extends PApplet {
  void setup() {
    size(W, H, P2D);
  }
  void draw()  {
    background(BG); 
    ellipse(W/2, H/2, 20, 20);
  } 
}


class Sketch3 extends PApplet {
  void setup() {
    size(W, H, P3D); 
  }
  void draw()  {
    background(BG); 
    lights(); 
    noStroke(); 
    translate(W/2, H/2, 0); 
    sphere(10);
  } 
}

andrewowaun Full Member Offline Posts: 202 Barbados	Re: Processing combined effort Reply #40 - Feb 21^st, 2010, 8:27am I have created an initial poll topic http://processing.org/discourse/yabb2/num_1266769552.html#0 If any are to be deleted or modified, please indicate accordingly.

andrewowaun

Re: Processing combined effort
Reply #41 - Feb 21^st, 2010, 8:47am

I have added a basic bouncing procedure which works indepedently of the mouse

The idea is to have a parameter which maintains the x,y,z location and when the other sketch loads is starts from that point, and the transition will be smooth.

Quote:

import java.lang.reflect.Constructor;
public boolean forward = true;
public boolean up = false;
public int px=0;
public int py =0;
public int ly=0;
public int lx=0;

final int W = 640, H = 480, BG = #000000, fps = 30, seconds = 6;
boolean export = true;
PApplet[] sketches;
String[] names;
int s;

void setup() {

  size(W, H);
  Class[] classes = getClass().getDeclaredClasses();
  int n = classes.length;
  sketches = new PApplet[n];
  names = new String[n];

  for(int i=0; i<n; i++) {
    try {
      Constructor c = classes[i].getDeclaredConstructor(getClass());
      sketches[i] = (PApplet) c.newInstance(this);
      sketches[i].init();
      names[i] = split(c.getName(), "$")[1];
    } catch (Exception e) {}
  }

  frameRate(fps);
}

void draw() {
bounce(true, 3, 1, 5);
  if(frameCount % (seconds * fps) == 1) {

    // stop running sketch
    if(frameCount>1) {
      println("stopping " + names[s]);
      sketches[s].stop();
      s = (s+1) % sketches.length;
    }

    // start next sketch
    println("starting " + names[s]);
    sketches[s].run();
  }

  sketches[s].handleDraw();
  PImage img = sketches[s].get();
  img.loadPixels();
  image(img, 0, 0);
  if(export && frameCount <= fps*seconds*sketches.length) saveFrame("showreel-#####.png");

}

class Sketch1 extends PApplet {
  void setup() {
    size(W, H,JAVA2D);
    smooth();
  }
  void draw() {
    background(BG);
    ellipse(px, py, 20, 20);
  }
}

class Sketch2 extends PApplet {
  void setup() {
    size(W, H, JAVA2D);
        smooth();
  }
  void draw() {
    background(BG);
// ellipse(W/2, H/2, 20, 20);
    ellipse(px, py, 20, 20);
  }
}

class Sketch3 extends PApplet {
  void setup() {
    size(W, H, P3D);
        smooth();
  }
  void draw() {
    background(BG);
    lights();
    noStroke();
   // translate(W/2, H/2, 0);
    translate(px,py, 0);
    sphere(10);
  }
}

void bounce(boolean rnd, int by, int lo, int hi){
if (forward){
  if (rnd)px+=random(lo,hi);
   if (!rnd){
    px+=by;
   }
}

   if (!forward){
     if(rnd)px-=random(lo,hi);
     if (!rnd){
      px-=by;
     }
     }

   if (up){
    if (rnd)py-=random(lo,hi*2);
     if (!rnd){
       py+=by;
     }
     }

     if (!up){
      if(rnd)py+=random(lo,hi*2);
     if (!rnd){
       py-=by;
     }

     }


   if (px>width)forward = false;
   if (px<0) forward = true;
   if (py>height)up = true;
   if (py<0 )up = false;
  }

andrewowaun

Re: Processing combined effort
Reply #42 - Feb 21^st, 2010, 9:27am

I have posted a slightly modified version at the below openprocessing.

http://www.openprocessing.org/visuals/?visualID=7763

If anyone wants to post to the site using the Combined Processing effort

The logon details are

Username : processingcombinedeffort
Password : combined

If anyone wants to submit test sketches post here or just submit to www.openprocessing.org

koogy

Re: Processing combined effort
Reply #43 - Feb 21^st, 2010, 11:13am

oh, i've added a comment to the openprocessing sketch (as adean) but will repeat it here:

that code's a lot like i have (unfinished), specifically the way it picks up other classes. however, i think

Class[] classes = getClass().getDeclaredClasses();

will pick up the classes in all tabs and the rest of the code will try and run them. but that'll cause problems if the sub-sketches themselves define classes, for instance if someone defines a particle system class.

i filtered out the sketches by name (they had to start with Sketch), which imposes a naming scheme but... you could probably limit it to those that extend PApplet.

andrewowaun Full Member Offline Posts: 202 Barbados	Re: Processing combined effort Reply #44 - Mar 14^th, 2010, 5:28pm This is just a basic example of high fps using the idea by bit.craft http://www.openprocessing.org/visuals/?visualID=8236 Processing rocks!!!
	« Last Edit: Mar 17^th, 2010, 4:46am by andrewowaun »