Processing Forum

Controlling frameRate (faster and slower using minim)

[7 Replies]
- 03-Apr-2011 08:31 AM
- Forum: Core Library Questions
Hi,

I was wondering, is there any way I can make sure frameRate increases and decreases using minim line in (and fft)? So it would be something like:

frameRate(10 * spectrum[0]);

Hope someone can help me cause I couldn't find anything similar here

PS: I have tried the code that I suggested in void draw() using a gif animation but it freezes instead of working.

Weird problem (coordinates out of bounds)

[2 Replies]
- 31-Mar-2011 10:41 AM
- Forum: Core Library Questions
I just took the movie sample code from the Processing website, and when I want to run it using my own movie (for which I also changed the height and width of the canvas, it gives me the error: ArrayIndexOutOfBoundsException: Coordinate out of bounds! What could possibly be wrong?
1. import processing.video.*;
3. Movie theMov;
5. void setup() {
6. size(640, 380);
7. theMov = new Movie(this, "bird.mov");
8. theMov.play();
9. /* only use 1 of the following options */
10. //theMov.play(); //plays the movie once
11. //theMov.loop(); //plays the movie over and over
12. }
14. void draw() {
15. image(theMov, 0, 0);
16. }
18. void movieEvent(Movie m) {
19. m.read();
20. }

Smooth moves using minim (music visualiser)

[4 Replies]
- 30-Mar-2011 06:43 AM
- Forum: Contributed Library Questions
My question is really simple yet hard to find out with experimenting..
I want to do the following:

I have a 3D bird flying to the rhythm of music using minim line in.

To be more specific, it flies up and down. (Low sound = bird flying low, high sound = bird flying high)

Yet it's not moving smooth, it moves too fast to my liking. The logic thing that I would do is to use frame rate to slow it down but that makes the movement look like a slow browser loading an animation.

I hope it's clear what I'm asking here, anyone knows what function I should be looking for?

3D .obj file not showing while Processing reads it

[1 Reply]
- 29-Mar-2011 12:48 PM
- Forum: Contributed Library Questions
Hi,

This is kind of annoying as I am not getting any errors - I am trying to load an .obj file with this simple code but all I get is a gray area. Here is the code:
2. /*
3. Load a scene from an .obj file as simple as it gets.
6. model is the free Sponza Atrium by Marko Dabrovic:
7. http://hdri.cgtechniques.com/~sponza/
8. Downloads: http://hdri.cgtechniques.com/~sponza/files/
9. */
11. import javax.media.opengl.*;
12. import processing.opengl.*;
13. import objimp.*;
15. float aspectRatio = 1;
17. ObjImpScene scene2;
20. void setup()
21. {
22. size( 800, 600, OPENGL );
24. aspectRatio = width / (float)height;
26. hint( ENABLE_OPENGL_4X_SMOOTH );
27. smooth();
29. frameRate( 60 );
31. try
32. {
33. scene2 = new ObjImpScene( this );
34. scene2.load( dataPath("vogel.obj"), 5 );
35. // scene2.load( dataPath("spheres.obj"), .5 );
36. } catch( Exception e )
37. {
38. println( e );
39. System.exit( 0 );
40. }
41. }
45. void draw()
46. {
47. float time = millis() * 0.001;
49. background( 0.4*255 );
51. perspective( PI*.25, aspectRatio, 1, 6000 );
52. camera( 0, 3, 0, -2*cos(time*.5), sin(time)*2+3, -2*sin(time*.5), 0, 1, 0 );
54. // setup light. to do correct lighting you need to set it before any world transformations
55. GL _gl = ((PGraphicsOpenGL)g).beginGL();
56. setupLight( _gl, new float[]{0, 15, 0}, 1 );
57. ((PGraphicsOpenGL)g).endGL();
59. scale( 1, -1, 1 ); // make y axis points up
62. // translate( 0, -10, 0 );
63. rotateY( radians(mouseX) );
65. scene2.draw();
66. }
71. // val is 0 or 1. 0 = directional light, 1 = point light
72. void setupLight( GL g, float[] pos, float val )
73. {
74. float[] light_emissive = { 0.0f, 0.0f, 0.0f, 1 };
75. float[] light_ambient = { 0.0f, 0.0f, 0.0f, 1 };
76. float[] light_diffuse = { 1.0f, 1.0f, 1.0f, 1.0f };
77. float[] light_specular = { 1.0f, 1.0f, 1.0f, 1.0f };
78. float[] light_position = { pos[0], pos[1], pos[2], val };
80. g.glLightfv ( GL.GL_LIGHT1, GL.GL_AMBIENT, light_ambient, 0 );
81. g.glLightfv ( GL.GL_LIGHT1, GL.GL_DIFFUSE, light_diffuse, 0 );
82. g.glLightfv ( GL.GL_LIGHT1, GL.GL_SPECULAR, light_specular, 0 );
83. g.glLightfv ( GL.GL_LIGHT1, GL.GL_POSITION, light_position, 0 );
84. g.glEnable( GL.GL_LIGHT1 );
85. g.glEnable( GL.GL_LIGHTING );
87. g.glEnable( GL.GL_COLOR_MATERIAL );
88. }
93. void stop()
94. {
95. super.stop();
96. }
And this is what Processing tells me:

Loaded OBJ from file '/Users/Caroline/Documents/Processing/MIJN PROGRAMMA/vogelobj/data/vogel.obj'

4568 vertices.

5586 normals.

2811 textures coordinates.

And as far as I know there's nothing wrong with the .obj file.

Smooth movement (live audio input)

[1 Reply]
- 10-Mar-2011 09:55 AM
- Forum: Core Library Questions
I have found this code on the internet, and I am working on my own audio visualiser. Everything works but I want to apply a smooth movement. (for instance if you would take the example I post here with eclipses slowly appearing, in my example they would appear at the moment of sound without fading in and out)

I think it has to do with the 'flux' part or Open GL.. So the following code is NOT the code that I have written, but the code that contains a 'fade' statement somewhere I can't figure out. Hope someone can tell me what part it is about the code that I need.
2. import javax.media.opengl.*;
3. import processing.opengl.*;
4. import ddf.minim.*;
5. import ddf.minim.analysis.*;
7. Minim minim;
8. AudioInput in;
9. FFT fft;
11. int index;
12. float[]x = new float[width];
13. float[]y = new float[width];
15. float[] spectrum;
16. float[] lastspectrum;
18. void setup()
19. {
20. size(720, 480, OPENGL);
21. hint(DISABLE_OPENGL_2X_SMOOTH);
22. background ( 0 ) ;
23. smooth();
24. noStroke();
26. x = new float[width];
27. y = new float[width];
29. for (int i = 0; i < x.length ; i++)
30. x[i] = (float)i ;
32. minim = new Minim(this);
33. in = minim.getLineIn(Minim.STEREO, 512);
34. fft = new FFT(in.bufferSize(), in.sampleRate());
35. fft.noAverages();
37. spectrum = new float[fft.specSize()];
38. lastspectrum = new float[fft.specSize()];
40. Arrays.fill( lastspectrum, 0 );
41. }
43. void draw()
44. {
45. smooth();
46. fft.forward(in.mix);
48. ///------------------------
49. // SPECTRAL FLUX
50. ///------------------------
51. float flux = 0;
52. for( int i = 0 ; i < fft.specSize() ; i++)
53. {
54. spectrum[i] = fft.getBand(i);
55. flux += spectrum[i] - lastspectrum[i];
56. // rectified flux
57. // float fluxval = spectrum[i] - lastspectrum[i];
58. // flux += (fluxval > 0.0 ) ? fluxval : 0.0;
59. }
60. System.arraycopy( spectrum, 0, lastspectrum, 0, spectrum.length );
61. ///------------------------
63. fill(0,6);
64. rect ( 0,0, width, height );
66. fill(200,60);
67. translate(0,height/2);
68. for ( int i = 0 ; i < x.length ; i++)
69. ellipse(x[i],y[i],abs(flux),abs(flux));
71. y[index++%width] = flux;
72. }
74. void stop()
75. {
76. in.close();
77. minim.stop();
78. super.stop();
79. }
81. void mouseClicked()
82. {
83. saveFrame();
84. }

Using image instead of Processing shape

[1 Reply]
- 07-Mar-2011 04:42 PM
- Forum: Core Library Questions
In this example, a cloud moves when someone blows or speaks into the mic. I want to make the same but with my own image. I got this far but I cannot get the image to move like the cloud does.

Here is the cloud example, my adapted code is below:
2. import ddf.minim.*;
4. Minim minim;
5. AudioInput in;
7. PImage p1;
9. void setup() {
10. size( 500,300 );
11. smooth();
12. frameRate(25);
13. minim = new Minim(this);
14. in = minim.getLineIn( Minim.MONO, 512 );
15. p1 = loadImage("p1.jpg");
16. }
18. int pos = 0;
20. void draw() {
21. background( 128, 128, 255 );
22. float m = 0;
23. for(int i = 0; i < in.bufferSize() - 1; i++) {
24. if ( abs(in.mix.get(i)) > m ) {
25. m = abs(in.mix.get(i));
26. }
27. }
29. pos += m * 50;
30. dinge( pos, 150, 80 );
31. if ( pos > width ) {
32. pos = 0;
33. }
35. }
37. void dinge( int x, int y, int w ) {
38. image(p1, 150, 80);
39. int u = w/6;
40. int u15 = int(u * 1.5);
41. int u25 = int(u * 2.5);
42. }
Does anyone know what I am doing wrong?

Simple fiducial question

[1 Reply]
- 02-Mar-2011 02:30 AM
- Forum: Contributed Library Questions
Hi,

I am playing around with Reactivision and TUIO. Every fiducial has its own ID and I'm looking for the right name in Processing to connect every fiducial with its own image. I know how to use, load and draw images but I simply cannot find out how I should call my fiducials. I read in the documentation that the fiducial ID is called Symbol ID but I don't understand how I can say the following:

if ( *FIDUCIAL ID* == 0) {

image(img,0,0)

}

Here is my code:
2. // we need to import the TUIO library
3. // and declare a TuioProcessing client variable
4. import TUIO.*;
5. TuioProcessing tuioClient;
7. // these are some helper variables which are used
8. // to create scalable graphical feedback
9. float cursor_size = 15;
10. float object_size = 60;
11. float table_size = 760;
12. float scale_factor = 1;
13. PFont font;
14. PImage p0;
16. void setup()
17. {
18. //size(screen.width,screen.height);
19. size(640,480);
20. noStroke();
21. fill(0);
23. loop();
24. frameRate(30);
25. //noLoop();
27. p0 = loadImage("p0.jpg");
29. hint(ENABLE_NATIVE_FONTS);
30. font = createFont("Arial", 18);
31. scale_factor = height/table_size;
33. // we create an instance of the TuioProcessing client
34. // since we add "this" class as an argument the TuioProcessing class expects
35. // an implementation of the TUIO callback methods (see below)
36. tuioClient = new TuioProcessing(this);
37. }
39. // within the draw method we retrieve a Vector (List) of TuioObject and TuioCursor (polling)
40. // from the TuioProcessing client and then loop over both lists to draw the graphical feedback.
41. void draw()
42. {
43. background(255);
44. textFont(font,18*scale_factor);
45. float obj_size = object_size*scale_factor;
46. float cur_size = cursor_size*scale_factor;
48. Vector tuioObjectList = tuioClient.getTuioObjects();
49. for (int i=0;i<tuioObjectList.size();i++) {
50. TuioObject tobj = (TuioObject)tuioObjectList.elementAt(i);
51. stroke(0);
52. fill(0);
53. pushMatrix();
54. translate(tobj.getScreenX(width),tobj.getScreenY(height));
55. rotate(tobj.getAngle());
56. rect(-obj_size/2,-obj_size/2,obj_size,obj_size);
57. popMatrix();
58. fill(255);
59. text(""+tobj.getSymbolID(), tobj.getScreenX(width), tobj.getScreenY(height));
60. }
62. Vector tuioCursorList = tuioClient.getTuioCursors();
63. for (int i=0;i<tuioCursorList.size();i++) {
64. TuioCursor tcur = (TuioCursor)tuioCursorList.elementAt(i);
65. Vector pointList = tcur.getPath();
67. if (pointList.size()>0) {
68. stroke(0,0,255);
69. TuioPoint start_point = (TuioPoint)pointList.firstElement();;
70. for (int j=0;j<pointList.size();j++) {
71. TuioPoint end_point = (TuioPoint)pointList.elementAt(j);
72. line(start_point.getScreenX(width),start_point.getScreenY(height),end_point.getScreenX(width),end_point.getScreenY(height));
73. start_point = end_point;
74. }
76. stroke(192,192,192);
77. fill(192,192,192);
78. ellipse( tcur.getScreenX(width), tcur.getScreenY(height),cur_size,cur_size);
79. fill(0);
80. text(""+ tcur.getCursorID(), tcur.getScreenX(width)-5, tcur.getScreenY(height)+5);
81. }
82. }
84. }
86. // these callback methods are called whenever a TUIO event occurs
88. // called when an object is added to the scene
89. void addTuioObject(TuioObject tobj) {
90. println("add object "+tobj.getSymbolID()+" ("+tobj.getSessionID()+") "+tobj.getX()+" "+tobj.getY()+" "+tobj.getAngle());
91. }
93. // called when an object is removed from the scene
94. void removeTuioObject(TuioObject tobj) {
95. println("remove object "+tobj.getSymbolID()+" ("+tobj.getSessionID()+")");
96. }
98. // called when an object is moved
99. void updateTuioObject (TuioObject tobj) {
100. println("update object "+tobj.getSymbolID()+" ("+tobj.getSessionID()+") "+tobj.getX()+" "+tobj.getY()+" "+tobj.getAngle()
101. +" "+tobj.getMotionSpeed()+" "+tobj.getRotationSpeed()+" "+tobj.getMotionAccel()+" "+tobj.getRotationAccel());
102. }
104. // called when a cursor is added to the scene
105. void addTuioCursor(TuioCursor tcur) {
106. println("add cursor "+tcur.getCursorID()+" ("+tcur.getSessionID()+ ") " +tcur.getX()+" "+tcur.getY());
107. }
109. // called when a cursor is moved
110. void updateTuioCursor (TuioCursor tcur) {
111. println("update cursor "+tcur.getCursorID()+" ("+tcur.getSessionID()+ ") " +tcur.getX()+" "+tcur.getY()
112. +" "+tcur.getMotionSpeed()+" "+tcur.getMotionAccel());
113. }
115. // called when a cursor is removed from the scene
116. void removeTuioCursor(TuioCursor tcur) {
117. println("remove cursor "+tcur.getCursorID()+" ("+tcur.getSessionID()+")");
118. }
120. // called after each message bundle
121. // representing the end of an image frame
122. void refresh(TuioTime bundleTime) {
123. redraw();
124. }
Thanks in advance, Caroline

Processing + OpenCV trouble

[1 Reply]
- 28-Feb-2011 06:03 AM
- Forum: Contributed Library Questions
Hi Processers,

First of all I am a complete noob, so sorry if my question seems really stupid or hard to answer.
What am I trying to do is the following:

For my gradutation project I am working with my own music, I want to make an original graphical application or something really fun to do. So I stumbled on Reactivision and the recognition of fiducials with a lot of possibilities.

Currently I am trying something very basic which doesn't seem to work at all, no matter what I try: the fiducials will be recognized through Processing, starting up an image. If I'll be able to do this, I can work with sound and movies. An image just seemed something very easy to start with. I found this tutorial online of people who used the same principal in a presentation.

So I adjusted the code to what I'm trying to do and came up with this:
1. import ddf.minim.*;
2. import ddf.minim.signals.*;
3. import ddf.minim.analysis.*;
4. import ddf.minim.effects.*;
5. import hypermedia.video.*;
6. import processing.video.*;
7. import TUIO.*;
8. import java.util.*;
9. //Capture myCapture;
10. OpenCV opencv;
11. Minim minim;
12. AudioPlayer s7;
13. PImage p0;
14. int W = 640;
15. int H = 480;
16. float wmax;
17. float hmax;
18. Hashtable playing;
19. TuioProcessing tuioClient;
20. void setup(){
21. size(W,H);
23. wmax = W/2;
24. hmax = H/2;
26. frameRate(30);
27. playing = new Hashtable();
28. minim = new Minim(this);
29. tuioClient = new TuioProcessing(this);
30. initContent();
32. opencv = new OpenCV( this );
33. opencv.capture( width, height );
35. //myCapture = new Capture(this, width, height, 30);
36. p0 = loadImage("p0.jpg");
37. }
38. void captureEvent(Capture myCapture) {
39. //myCapture.read();
40. }
41. void draw(){
42. //image(myCapture, 0, 0);
44. opencv.read();
45. image( opencv.image(), 0, 0 );
46. Vector tuioObjectList = tuioClient.getTuioObjects();
47. for (int i=0;i<tuioObjectList.size();i++) {
48. TuioObject tobj = (TuioObject)tuioObjectList.elementAt(i);
52. String sid = "" + tobj.getSymbolID();
54. if(playing.get( sid )==null ){
55. playing.put(sid,"N");
56. }
58. String pstate = (String) playing.get( sid );
60. if(pstate.equals("S")){
62. float ww;
63. float hh;
64. float p = 1;
65. float p2 = 1;
67. if( sid.equals("0") ){
69. ww = p0.width;
70. hh = p0.height;
71. if(ww>wmax){
72. p = ww/wmax;
73. }
75. if(hh>hmax){
76. p2 = hh/hmax;
77. if(p2>p){
78. p = p2;
79. }
80. }
82. ww = ww/p;
83. hh = hh/p;
85. image(p0,tobj.getScreenX(width)-ww/2,tobj.getScreenY(height)-hh/2,ww,hh);
87. }
89. }
90. }
92. }
93. void addTuioObject(TuioObject tobj){
95. String sid = "" + tobj.getSymbolID();
97. if(playing.get( sid )==null ){
98. playing.put(sid,"N");
99. }
101. String pstate = (String) playing.get( sid );
103. if(pstate.equals("N")){
105. playing.put(sid,"S");
107. if(sid.equals("0")){
109. }
112. }
114. }
115. void removeTuioObject(TuioObject tobj){
116. String sid = "" + tobj.getSymbolID();
118. if(playing.get( sid )==null ){
119. playing.put(sid,"N");
120. }
122. String pstate = (String) playing.get( sid );
124. if(pstate.equals("S")){
126. playing.put(sid,"N");
128. if(sid.equals("0")){
130. } else if(sid.equals("1")){
132. }
134. }
135. }
136. void updateTuioObject(TuioObject tobj){
137. }
138. void refresh(TuioTime bundleTime){
139. }
140. void stop(){
142. opencv.stop();
143. s7.close();
144. minim.stop();
145. super.stop();
146. }
147. void addTuioCursor(TuioCursor tcur){}
148. void removeTuioCursor(TuioCursor tcur) {}
149. void updateTuioCursor(TuioCursor tcur) {}
150. void initContent(){
151. s7 = minim.loadFile("7.wav", 2048);
152. //s7.loop();
153. //s7.setVolume(0);
154. }
155. void movieEvent(Movie m) {
156. m.read();
157. }
But as they say in the tutorial, the code is made up very quick in one afternoon because they didn't have enough time. Therefore the code is very difficult and confusing, which doesn't make it easier for me. As I expected my code doesn't work, the only thing I can do is show my fiducials through the webcam on Reactivision and Processing at the same time, Reactivision recognizes them but Processing doesn't do anything.

Does anybody know what I'm doing wrong?

Thanks in advance, Caroline

Activity Trend