I am trying to access profile data via the Facebook Graph Api like described here:

I'd like to lock my app from being resized &

I found the frame.setResizable(boolean) but frame seems not to be initialzed on P.1.5.1 ( Nullpointer ).
How would I do this?

Hello there,

I encountered a strange thing with minim.
Somehow it most of the time (very inconsistent) it does not play the sound file till the complete end, and stops a couple milliseconds before. Actually it does stop at the end of the audiofile's lenght BUT there is still "audio left"

If I hit play again, it plays a bit more of the end. I can continue this until the true end is reached.

What is even worse if the soundfile stops at the end  (same happends when pressed pause anywhere on the track) and i cue it to any other position, a short bit of the "last" audio get's played before continuing with the new position. As if there was still audio in the buffer. Which does not only create "wrong sounds" it put's everything (millisecond position and real sound) out of sync.

I am trying to build an audioplayer, where sync is very important, but somehow minim seems so buggy that it looks impossible.

Or am I doing something wrong?
I can't be the first one who encounters this problem, can I?

1. import controlP5.*;
2. import ddf.minim.*;
3. import ddf.minim.analysis.FFT;
4.   ControlP5  playPauseGui;
5.  
6.   Minim minim;
7.  AudioPlayer soundFile;
8.  
9. void setup(){
10.  
11.   size(400,400);
12.         playPauseGui = new ControlP5(this);
13.         playPauseGui.addButton("Play", 0,  200,  125, 30, 10);
14.         playPauseGui.addButton("Pause", 0, 250, 125, 30, 10);
15.         playPauseGui.addButton("Stop_Player", 0, 300, 125, 30, 10).setLabel("Stop");
16.        
17.         minim = new Minim(this);
18.        
19.         soundFile = minim.loadFile("data/121117_153941.wav");
20. }
21. public void draw(){
22.   background(200);
23.   text(soundFile.position()+" / "+soundFile.length(),20,20);
24.   
25. }
26.    public void Play(){
27.        soundFile.play();
28.     }
29.     public void Pause(){
30.         soundFile.pause();
31.     }
32.     public void Stop_Player(){
33.         soundFile.pause();
34.         soundFile.rewind();
35.  
36.     }

   
    
   
   
grab the soundfile here: http://www.marc-tiedemann.de/daten/121117_153941.wav

is there any way to check wether an Image save via

1. save("xy")

Dear Forum,

I must admit that I am a complete rooky with shaders.
But for a project i need a blur shader due to performance reasons with variable radius to control the blur intensity.

So I found this nice fragment shader which works smooth with processing 2.0

1. // Adapted from:
2. // http://callumhay.blogspot.com/2010/09/gaussian-blur-shader-glsl.html
3. uniform sampler2D textureSampler;
4. // The inverse of the texture dimensions along X and Y
5. uniform vec2 texcoordOffset;
6. varying vec4 vertColor;
7. varying vec4 vertTexcoord;
8. uniform int blurSize;      
9. uniform int horizontalPass; // 0 or 1 to indicate vertical or horizontal pass
10. uniform float sigma;        // The sigma value for the gaussian function: higher value means more blur
11.                             // A good value for 9x9 is around 3 to 5
12.                             // A good value for 7x7 is around 2.5 to 4
13.                             // A good value for 5x5 is around 2 to 3.5
14.                             // ... play around with this based on what you need :)
15. const float pi = 3.14159265;
16. void main() { 
17.   float numBlurPixelsPerSide = float(blurSize / 2);
18.  
19.   vec2 blurMultiplyVec = 0 < horizontalPass ? vec2(1.0, 0.0) : vec2(0.0, 1.0);
20.   // Incremental Gaussian Coefficent Calculation (See GPU Gems 3 pp. 877 - 889)
21.   vec3 incrementalGaussian;
22.   incrementalGaussian.x = 1.0 / (sqrt(2.0 * pi) * sigma);
23.   incrementalGaussian.y = exp(-0.5 / (sigma * sigma));
24.   incrementalGaussian.z = incrementalGaussian.y * incrementalGaussian.y;
25.   vec4 avgValue = vec4(0.0, 0.0, 0.0, 0.0);
26.   float coefficientSum = 0.0;
27.   // Take the central sample first...
28.   avgValue += texture2D(textureSampler, vertTexcoord.st) * incrementalGaussian.x;
29.   coefficientSum += incrementalGaussian.x;
30.   incrementalGaussian.xy *= incrementalGaussian.yz;
31.   // Go through the remaining 8 vertical samples (4 on each side of the center)
32.   for (float i = 1.0; i <= numBlurPixelsPerSide; i++) {
33.     avgValue += texture2D(textureSampler, vertTexcoord.st - i * texcoordOffset *
34.                           blurMultiplyVec) * incrementalGaussian.x;        
35.     avgValue += texture2D(textureSampler, vertTexcoord.st + i * texcoordOffset *
36.                           blurMultiplyVec) * incrementalGaussian.x;        
37.     coefficientSum += 2.0 * incrementalGaussian.x;
38.     incrementalGaussian.xy *= incrementalGaussian.yz;
39.   }
40.   gl_FragColor = avgValue / coefficientSum;
41. }

I just wondered if there is a faster way of passing the content of a PGraphics to a GLTexture then using

1. tex.putImage(pg);

Hello,

I just stumpled into a wierd issue regarding the curveVertex.

My goal is to draw moving organic shapes into an offscreenBuffer, to get the desired resolution later for screening & printing.

What I am using is a vector shape via curvedVertex.

The funny thing is that whenever the buffer extends the normal screensize it get annoying hickups.
It looks like it "forgets" to draw polygons.

I've tried with PGraphics as well as GLgraphics. both behave the same.
The issue also seems to reproduce itself (missing the same polygons) depending on buffer-pixel-size.

Is it a bug, or is it me?
As said, whenever the buffer is smaller or same my applet size all is fine. This might somehow be linked together, or just a coincidence as i can't have a window of 3000x3000px.

I am still on processing 1.51 if that helps.

And I am also happy for any suggestions of using another method/library that will create nice bezier vector shapes for postprocessing in illustrator.

I just encountered a wierd problem/bug with semiTransparent Alphas on the GLGraphics OffscreenBuffer.

It seems that whenever I draw something semiTransparent, it forces everything in that spot to be semiTransparent. and make the Texture seethrough, even though we might had a background or even no transparent objects lying underneith.

here is the problem nailed down in a sketch.
Here i draw full filled rect and a semitransparent rect over each other, the region, where the semi transparent crosses the full filled one, make the full filled also semi-transparent, and we can see the ellipse underneith the textured image.
well we shouldn't actually see the circles at all, scince the OffScreenBuffer has a black .background.

Here picture and code. any ideas!?

1. 
   import processing.opengl.*;
   import codeanticode.glgraphics.*;
   
   GLGraphicsOffScreen glg2;
   
   
   void setup() {
     size(640, 480, GLConstants.GLGRAPHICS);
       
     // Creating an off-screen drawing surfaces. The first one has
     // 4x multi-sampling enabled.
     glg2 = new GLGraphicsOffScreen(this, 200, 100);
    
   }
   
   void draw() {
     background(0);
    
   
   
     // In the off-screen surface 2, we draw random rectangles.  
     glg2.beginDraw();
    
     glg2.noStroke();
     glg2.rectMode(CENTER);
     glg2.background(0);
     glg2.fill(20, 50, 230, 255);
     glg2.rect(glg2.width/2,glg2.height/2,glg2.width/3,glg2.height);
     glg2.fill(20, 250, 0, 50);
     glg2.rect(glg2.width/2,glg2.height/2,glg2.width,glg2.height/3);
     glg2.endDraw();   
   
     fill(255);
     ellipseMode(CENTER);
     ellipse(width/2,height/2,400,400);
     ellipse(width/2,height/2,100,100);
   
     image(glg2.getTexture(), 10, 10, width - 20, height - 20);
   
   }

My goal is to to draw a GLModel into an interactive Scene from the Proscene library into an OffScreen BufferObject.

The single combinations of GLModel in proscene..

...

 GLGraphics renderer = (GLGraphics)g;
 renderer.beginGL();

 theModel.render();

 renderer.endGL();
...

and Proscene to the Buffer:
...
    buffer.beginDraw();
    scene.beginDraw();

    buffer.background(0);
    buffer.box(10)
   
    scene.endDraw();
    canvas.endDraw();
...

work really great!


but how would I combine these two!?
I tried various combinations but nothing worked.
And getting really confused with the different renderes here at work.

I am just getting my head around the proscene library for processing.

My goal is to project a virtual 3d object opon, the same real one.
For Projection Mapping to complex surfaces.

It's really hard to determine the right virtual size and camera distance, just by trial and error.
So there must be better ways.

I am not so keen with the pure OpenGL MatrixModulations.
But are the calculated Perspective Projections, in any way related to real World distances?

I've see that there is the physicalDistanceToScreen function.

Returns the physical distance between the user's eyes and the screen (in meters).

Default value is 0.5m.

Value is set using setPhysicalDistanceToScreen(float).

physicalDistanceToScreen() and focusDistance() represent the same distance. The first one is expressed in physical real world units, while the latter is expressed in processing virtual world units. Use their ratio to convert distances between these worlds.

which looks like exactly what I need.
but neither this nor the focus distance seem to change when moving the camera,
or the other way around changinging these values by the setFunctions, doesn't seem to have any effect on perspective calculation.

Is this function not finished yet, or am i on the wrong track !?

my goal is to get the pixel array from a GLGraphicsOffscreen Texture, to pass to a blob detection.


GLGraphicsOffscreen finalTexture;

within the draw loop:


   finalTexture.beginDraw();  
   ....
   finalTexture.endDraw();

  i try

  finalTexture.loadPixels();
           
  for (int i=0;i<finalTexture.pixels.length;i++){
         println(" pixel # " + i +" = " + finalTexture.pixels[i]);
  }

and even though the offscreenImage is displayed correctly, the arry is completly black.

i also tryed to access it via

finalTexture.getTexture.pixels

with no luck.

hey there,

i'm trying to use the JMCMovie library to create an alpha enabled video.
in order to have a "cutout" person walking on a plane.
i prepared the video by keying the background, leaving just the person, with a valid alpha chanel in AE.
so i have an .mov in animation codec with enabled alpha, double checked.

now i am trying to display this clip, like discussed here:
http://processing.org/discourse/yabb2/YaBB.pl?num=1276082717
in order to activate the alpha chanel, for just displaying the walking person.

but somehow it seems it is not truly blending just the alpha chanel, instead the whole image get's blended with the object (here a plane but also tested with two videos). I tryed a bunch of blending routines, but eithers the supposed alpha chanel is displyed solid black, or as mentioned the whole image is blended, multiplied with other objects.

should i go in the gl core and bind the image as a texture, with enabled alphablending by hand, like u would to with a normal texture? or is the problem mixing PApplet and OpenGL..

has anyone experience with that?

here's my code so far:

   public void setup(){
    
        size(640, 480, OPENGL);
        myMovie = new JMCMovieGL(this,"slowwalk_clip.mov",PImage.ARGB);
        myMovie.loop();
    }

  public void draw(){
          
        PGraphicsOpenGL pgl = (PGraphicsOpenGL) g;

        background(0);

      fill(0,0,60);
      stroke(255);
      beginShape(QUADS);
            vertex(0,height,-500);
            vertex(width,height,-500);
            vertex(width,height,500);
            vertex(0,height,500);
      endShape();

GL gl = pgl.beginGL();
{
  gl.glEnable (gl.GL_BLEND);
  gl.glBlendFunc (gl.GL_ONE, gl.GL_ONE);

  myMovie.image(gl, 0, 0, myMovie.width, myMovie.height);

}
pgl.endGL();

   gl.glDisable(gl.GL_BLEND);
    }

hey there,

i am trying to get the JMCVideo Lib to run, because it seems to offer a good way of handling alpha chanels in videos.
well but i am having serious starting problems.
me (mac/snowlep)
followed the instructions, installed javaFX 1.2 (and 1.3) then copied everything needed from the 1.2 version to the processing/lib as usual including the jmcvideo.jar from angus.
trust me i did this a couple times, deleting everything and doing it fron scrach, no results.

the good old processing editor keeps tellin me: there is no library..
and netbeans says om.sun.media.jmc.MediaUnsupportedException: Unsupported media: .. which is kind of wierd when u use the demo video, given with he library.

i read all trough the post in the old forum, and it came to my attention that some other people with XCODE installed have the same problem!? but how can that be? who does Xcode fuck with Java? and did u somehow solve this?
would be great! can't wait to test this lib!