Processing Forum

How to make multiple instances of an object - take different paths - when chasing another object???

[2 Replies]
- 14-Jan-2013 08:09 PM
- Forum: Programming Questions
you can find the working sketch online at: http://openprocessing.org/sketch/85451

Basically I have a class that creates and ellipse. This ellipse will chase the mouse with a little bit of logic.

Then I make five of those ellipses.

QUESTION:

how do I keep multiple ellipses from following the same path? So as their projectories are different and they approach the mouse from different sides as much as possible?

Its ok if its for a little bit but I want to keep them from bunching up and overlaying. Do I have to keep track of all their locations and adjust accordingly? or can the variables or "forces" added to them be tweaked enough to make this happen?

here is the code if you do not want to go to the link above:

'''''''''''''''''''''''main''''''''''''''''''''''''''''''''''
1. //data variables
2. ArrayList ellipsoids = new ArrayList();
3. PVector mouse, direction, loc, vel, accel;
4. int numObjects = 5;
7. void setup(){
8. size(500,500);
10. //initialize and interate the ellipsoid class into the array list
11. for (int i = 0; i < numObjects; i ++){
12. //defines initial starting location and velocity
13. PVector loc = new PVector(random(0, width), random(0,height), 0);
14. PVector vel = new PVector(random(-1,1),random(-1,1), 0);
15. PVector accel = new PVector(0,0);
16. PVector mouse = new PVector(random(0,width),random(0,height));
17. //Ellipsoids(PVector tempMouse,PVector tempLocation, PVector tempVelocity, PVector tempAcceleration)
18. Ellipsoids tempEllipsoids = new Ellipsoids(mouse, loc, vel, accel);
19. ellipsoids.add(tempEllipsoids);
20. }//for
22. }//setup
24. void draw(){
25. background(100);
26. toScreen();
27. }//draw
29. void toScreen(){
30. //pull each ellipsoid out of the array and draw it to screen
31. for(int j = 0; j < ellipsoids.size(); j++){
32. Ellipsoids ellips = (Ellipsoids) ellipsoids.get(j);
33. ellips.run();//method in class that starts other methods
34. }//for
35. }//toScreen
''''''''''''''''''''''class''''''''''''''''''''''''''''''''''''''
1. class Ellipsoids{
2. //our class of two dimensional aliens
3. //here to play tag with our mice
4. //avoid them!! all this class does is
5. //draw the ellipse with the given
6. //variables from the main code
8. //data variables
9. //Some PVectors to store our coordinates in for easy access
10. PVector location,mouse,direction,acceleration,velocity;
11. //floats to transfer data from PVectors and do math
12. float x,y,dx,dy;
13. float boost = 0.5;
14. boolean isFar = true;
15. boolean isShort = false;
17. //constructor
18. Ellipsoids(PVector tempMouse,PVector tempLocation, PVector tempVelocity, PVector tempAcceleration){
19. //initialize object data
20. mouse = new PVector(tempMouse.x,tempMouse.y);
21. location = new PVector(tempLocation.x,tempLocation.y);
22. velocity = new PVector(tempVelocity.x,tempVelocity.y);
23. acceleration = new PVector(tempAcceleration.x,tempAcceleration.y);
24. }//constructor
26. void run(){
27. //run all the other methods
28. trackMouse();
29. move();
30. tests();
31. updateFar();
32. updateShort();
33. render();
34. }//run
36. //this continually tracks and updates the mouse PVector
37. //so we can use that information in other methods.
38. void trackMouse(){
39. mouse = new PVector(mouseX,mouseY);
40. //also update the difference between mouse and object
41. direction = PVector.sub(mouse,location);
42. direction.normalize();//simplify PVector
43. }//trackMouse
45. //update PVectors for movement
46. void move(){
47. direction.mult(boost);//multiply by scalar
48. acceleration = direction;//transfer data from one to other
50. velocity.add(acceleration);//adds new accel data to velocity
51. velocity.limit(10);//limits how large velocity can get
52. location.add(velocity); //adds velocity to location
53. velocity.mult(0.9);//keeps object from going in circles around mouse
54. }//updateFar
56. //how close is the object to mouse
57. //change booleans appropriately
58. void tests(){
59. //are we 'x' distance away?
60. if(abs(mouse.x - location.x) >= 100 && abs(mouse.y - location.y) >= 100){
61. isShort = false;
62. isFar = true;
63. }//if
64. //did the mouse just move in a straight line up,down,left,right?
65. if(abs(mouse.x - location.x) >= 0 && abs(mouse.y - location.y) > 100){
66. isShort = false;
67. isFar = true;
68. }//if
69. if(abs(mouse.x - location.x) > 100 && abs(mouse.y - location.y) >= 0){
70. isShort = false;
71. isFar = true;
72. }//if
73. //are we within 'x' amount of distance?
74. if(abs(mouse.x - location.x) < 100 && abs(mouse.y - location.y) < 100){
75. isFar = false;
76. isShort = true;
77. }//if
78. }//tests
80. //update the PVectors for when object is far from mouse
81. void updateFar(){
82. if(isFar){
83. boost = 0.5;
84. println("isFar");
85. }//if
86. }//updateClose
88. //update the PVectors for when object is closer to mouse
89. void updateShort(){
90. if(isShort){
91. boost = 1.5;
92. println("isShort");
93. }//if
94. }//updateClose
96. void render(){
97. noFill();
98. stroke(0);
99. ellipse(location.x,location.y,10,10);
100. }//render
103. }//classEllipsoids

how to store mouse coordinate for later use? PVector or not.

[5 Replies]
- 30-Dec-2012 12:46 PM
- Forum: Programming Questions
basically, I have an elipse that follows the mouse around. this math is no problem.

What I want to do is:

1. when ellipse comes within "x" amount of distance from mouse cursor;

a. stop following mouse

b.just take that specific mouse coordinates from that specifice frame

c.and move in that direction on a straight line ignoring actual current mouse location.

d. after another "x" amount of distance on path of line; return to following the mouse

I know how to make the ellipse move in a straight line and the logic to make it do so. but I cant figure out how to make it just keep going and ignore the current mouse location. so my math is wrong.

how can I get it to just keep going in a straight line using an old mouse position as a point of reference for the direction to move in? I cant figure out how to store a specific mouse coordinate without it always updating in the draw method.

** I have been learning a bit about PVectors and such so some of the code uses them. but its not a requirement
1. PVector location,mouse;
  float x,y,dx,dy;
  float easing = 0.5;
2. void setup(){
  size(500,500);
  location = new PVector(width/2,height/2); //starting point
  }
3. void draw(){
  background(100);
  distance();
  render();
4. //function that follows mouse
  //updateA();
  
  //if difference in distance is withing range do these
  if(abs(dx) < 50){
     if(abs(dy) < 50){
        //updateC();
     }//if
  }//if
  }//draw
5. void distance(){
  //where is our mouse?
  mouse = new PVector(mouseX,mouseY);
  
  //distance and line between mouse and object
  dx = mouse.x - location.x;
  dy = mouse.y - location.y;
6. //visual representation of line between mouse and ellipse
  stroke(255);
  line(mouse.x,mouse.y,location.x,location.y);
  }//distance
7. void updateA(){
  //follow the mouse
  //convert to absolute value of dx/dy so these return true
  //no matter where mouse is in relation to object. if
  //values are negative the object stops moving
  //if you dont do abs() you have to make two extra
  //if statements for when dx/dy are less than 1
8. if(abs(dx) > 1){
  location.x += dx*0.05;
  }//if
  if(abs(dy) > 1){
  location.y += dy*0.05;
  }//if
  }//updateA
10. void updateC(){
11. // I have tried different things but how do I store a unique value for mouse.x and mouse.y with out it updating?
12. }//updateC
13. void render(){
  //draw our 'enemy'
  noFill();
  stroke(0);
  ellipse(location.x,location.y,10,10);
  }//render
*__________________________________________________________________________________*

--------------------------------------------------------------------------------------------------------------------------------------------

--------------------------------------------------------------------------------------------------------------------------------------------

After working on this I have a rough and ugly BUT WORKING example. thanks to everyone!
2. //Some PVectors to store our coordinates in for easy access
  PVector location,mouse,distance;
  //two booleans that are used to determine
  //actions between mose and object
  boolean isFar = true;
  boolean isShort = false;
  //floats to transfer data from PVectors and do math
  float x,y,dx,dy,dx_Short,dy_Short;
  float easing = 0.5;
3. void setup(){
  size(500,500);
  //our starting location for ellipse
  location = new PVector(random(width/2),random(height/2));
  }//setup
4. void draw(){
  background(100);
  trackMouse();//always track main mouse variable
  render();//draw ellipse
  tests();//where is mouse vs. object
  
  //if mouse is more than 50px away
  if(isFar){
      distance();
      updateA();
  }//if
  //if mouse is less than 50px away
  if(isShort){
      distanceShort();
  }//if
  }//draw
5. //this continually tracks and updates the mouse PVector
  //so we can use that information in other methods.
  void trackMouse(){
  mouse = new PVector(mouseX,mouseY);
  }//trackMouse
6. //do all our math to follow mouse
  void distance(){
  
  //distance and line between mouse and object
  dx = mouse.x - location.x;//direction.x
  dy = mouse.y - location.y;//direction.y
  
  println("isFar");
  println(dx + "dx");
  println(dy + "dy");
  }//distance
7. //saves a single mouse coordinate from a single frame
  void distanceShort(){
      //sets variables to last known values of dx, dy
      //when mouse is within 50px
      dx_Short = dx;
      dy_Short = dy;
8. updateC();
  println("isShort");
  println(dx_Short + "dxSh");
  println(dy_Short + "dySh");
  }//distanceShort
9. //how close is the object to mouse
  //change booleans appropriately
  void tests(){
  //are we 'x' distance away?
  if(abs(mouse.x - location.x) > 50 && abs(mouse.y - location.y) > 50){
      isShort = false;
      isFar = true;
  }//if
  //did the mouse just move in a straight line up,down,left,right?
  if(abs(mouse.x - location.x) >= 0 && abs(mouse.y - location.y) > 50){
      isShort = false;
      isFar = true;
  }//if
  if(abs(mouse.x - location.x) > 50 && abs(mouse.y - location.y) >= 0){
      isShort = false;
      isFar = true;
  }//if
  //are we within 'x' amount of distance?
  if(abs(mouse.x - location.x) < 50 && abs(mouse.y - location.y) < 50){
      isFar = false;
      isShort = true;
  }//if
  }//tests
10. void updateA(){
  //follow the mouse
  //convert to absolute value of dx/dy so these return true
  //no matter where mouse is in relation to object. if
  //values are negative the object stops moving
  //if you dont do abs() you have to make two extra
  //if statements for when dx/dy are less than 1
  if(abs(dx) > 1){
  location.x += dx*0.05;
  }//if
  if(abs(dy) > 1){
  location.y += dy*0.05;
  }//if
  }//updateA
11. void updateC(){
  //captured the starting location of ellipse
  //move 'x' distance from that location in
  //direction of mouse in line
  location.x += dx_Short * 0.1;
  location.y += dy_Short * 0.1;
  }//updateC
12. void render(){
  //draw our 'enemy'
  noFill();
  stroke(0);
  ellipse(location.x,location.y,10,10);
  
  //draws line between object and mouse
  stroke(255);
  line(mouse.x,mouse.y,location.x,location.y);
  }//render

FATAL EXCEPTION: Animation Thread.... help with optimizing images when running in android mode?

[0 Replies]
- 30-Sep-2012 11:40 PM
- Forum: Android Processing
FATAL EXCEPTION: Animation Thread
java.lang.OutOfMemoryError: bitmap size exceeds VM budget
at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:460)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:525)
at processing.core.PApplet.loadImage(PApplet.java:3590)
at processing.core.PApplet.loadImage(PApplet.java:3576)
at processing.test.dogsmeow.dogsMeow.loadImg(dogsMeow.java:121)
at processing.test.dogsmeow.dogsMeow.setup(dogsMeow.java:61)
at processing.core.PApplet.handleDraw(PApplet.java:1855)
at processing.core.PGraphicsAndroid2D.requestDraw(PGraphicsAndroid2D.java:161)
at processing.core.PApplet.run(PApplet.java:1746)
at java.lang.Thread.run(Thread.java:1019)

when I run my sketch on the emulator [havnt tried a device yet] the above error is recieved right at 21 out of 26 images that are loaded.what the sketch does is load 26 images and 26 sounds and lets you cycle through them. if you click on an image it plays a sound that is associated with that image. all of them from both sets are kilobytes in size. the largets image is 30 kb.

Ive been reading and i understand that when in memory the images are height*width*4 or something similar. All the images are 600x600 pixels

my questions.

1. is that large?

2. how do I use smaller images and scale them up in processing and would that help?

3. is there something happening Im not aware of?

ive tried amping up the accessable memory for the emulator but no matter what I get this error.

any help would be great.

code:
1. import ddf.minim.*;
  import ddf.minim.signals.*;//dont need yet
  import ddf.minim.analysis.*;//dont need yet
  import ddf.minim.effects.*;//dont need yet
2. //our main array var's
  int i;//image
  int j;//sound
  
  //name our arrays
  String[] imgUrls;
  String[] sndUrls;
3. //array objects
  PImage[] images;
  AudioSnippet[] sounds;
4. //our left and right arrows
  PImage right_arrow;
  PImage left_arrow;
  
  //make our color for hover-over global
  color l;
  color r;
  
  //minim
  Minim minim;
6. void setup(){
  size(800, 600);
  background(0);
  loadImg();//load images
  loadSnd();//load sounds
  r = color(0, 0, 0, 200);//set starting value
  l = color(0, 0, 0, 200);//set starting value
  }//setup
7. void draw(){
  drawRecR();//draw button image
  drawRecL();
  
  noLoop(); //stop the images array from loading over and over
  image(images[i], 100, 0 );//draws our current image [i]
  }//draw
8. void mousePressed(){
  //if the mouse is over left 'button'
  if (mouseX >= 0 && mouseX <= 100){
     println("left button");
     i--;
     j--;
        if ( i < 0){
          //must subtract from array length to
          //account for 0 being counted
          i = images.length - 1;
          j = sounds.length - 1;
        }//if
  }//ifML
  
  //if the mouse is over the center area/image
  else if (mouseX >= 101 && mouseX <= 699){
      println("center button");
9.     //play the sound when clicked
      play();
  }//ifMC
  
  //if the mouse is over the right button
  else if (mouseX >= 700 && mouseX <= 800){
      println("right button");
      i++;
      j++;
        if ( i >= (imgUrls.length)){
          i = 0;
          j = 0;
        }//if
  }//ifML
     println(i);//what is our image #
     println(j);//what is our sound #
     println(mouseX);//where is our mouse
     //must use this because 'noLoop()' was
10. //causes draw() to run one time
  redraw();
  }//mouse pressed
11. //push list of images into array
  void loadImg(){
  imgUrls= loadStrings("listI.txt");
  images = new PImage[imgUrls.length];
       for(int i = 0; i<imgUrls.length;i++){
          images[i] = loadImage(imgUrls[i]);
            println(i);
       }//fori
  }//loadImg
12. //push list of sounds into array
  void loadSnd(){
  sndUrls= loadStrings("listS.txt");
  sounds = new AudioSnippet[sndUrls.length];
       for(int j = 0; j<sndUrls.length;j++){
          minim = new Minim(this);
          sounds[j] = minim.loadSnippet(sndUrls[j]);
            println(j);
       }//fori
  }//loadSnd
13. ////loads and positions image for 'button'
  void drawRecL(){
  left_arrow = loadImage("arrowLeft.jpg");
  image(left_arrow, 0,0);
  fill(l);
  rect(0,0,100,600);
  }//drawRec
14. //loads and positions image for 'button'
  void drawRecR(){
  right_arrow = loadImage("arrowRight.jpg");
  image(right_arrow, 700,0);
  fill(r);
  rect(700,0,100,600);
  }//drawRec
15. //our hover over affect is just a black rectangle at
  //a lower alpha that is hidden if the mouse is over it
  //because noLoop was called 'mouseMoved' was the
16. //only way found to get this affect as it continuously tracks the mouse
17. void mouseMoved(){
  //if the mouse is over left button
  if (mouseX >= 0 && mouseX <= 100){
      l = color(0, 0, 0, 10);
  }else if (mouseX >= 101 && mouseX <= 699){
      l = color(0,0,0,200);
  }//if
     //if mouse is over right button
  if (mouseX >= 700 && mouseX <= 800){
      r = color(0, 0, 0, 10);
  }else if (mouseX >= 101 && mouseX <= 699){
      r = color(0,0,0,200);
  }//if
  loop();
  }//rhover
18. //control when the sound file is played
  void play(){
  //if it is not playing then go ahead and play
  if (!sounds[j].isPlaying()){
      // makes sure the file plays from start
      sounds[j].rewind();
      sounds[j].play();
  }//if
  }//play
19. //when the program is closed, close all the sound threads
  void close(){
  sounds[j].close();
  minim.stop();
  //
  super.stop();
  }//stop

[FIXED]my array loads up to 10 items and then gives a NullPointerException. Where did I go wrong?

[5 Replies]
- 29-Sep-2012 08:02 AM
- Forum: Core Library Questions
**update** all the code below works perfectly. I found out that two out of many sound files were .wma format and not .wav..this caused processing to through an error because it did not match what was listed in the text files i am loading.

**

right now I have two arrays.

1. loads and stores a list of images

2. loads and stores a list of sounds

the images array works perfectly. loads all 26 images

the sounds array however loads at the most 10 and then throws a "NullPointerException". Ive checked my spelling, math, adding memory in preferences, everything. I can load any number of items as long as I dont go over 10.

even if i comment out the images load method and only load the sounds it fails.

im using minim 2.02

and processing 2.0b3

everything works and runs smoothly as long as I dont load more than 10 items into the sound array.

the sketch allows you to load 26 images and 26 sounds from a text file. when you click on the image, lets say of a monkey it will play the corresponding sound of the monkey. you can cycle through the images and sounds at the same time with two 'buttons' on the left and right of the image.

code:
1. import ddf.minim.*;
  import ddf.minim.signals.*;//dont need yet
  import ddf.minim.analysis.*;//dont need yet
  import ddf.minim.effects.*;//dont need yet
2. //a variable to contain our array number
  //set to zero because that is the default
  //value of an array
  int imgVar = 0;
  
  //our main array var's
  int i;//image
  int j;//sound
  
  //name our arrays
  String[] imgUrls;
  String[] sndUrls;
  PImage[] images;
  AudioSnippet[] sounds;
  
  //minim
  Minim minim;
  
  void setup(){
  size(700, 600);
  background(0);
  loadSnd();//load sounds
  loadImg();//load images
  }//setup
3. void draw(){
  drawRecR();
  drawRecL();
  //make sure the image is refreshed and correct
  image(images[i], 50, 0 );
  }//draw
4. void mousePressed(){
  
  //if the mouse is over left button
  if (mouseX >= 0 && mouseX <= 50){
     println("left button");
     i--;
     j--;
        if ( i < 0){
          //must subtract from array length to
          //account for 0 being counted
          i = images.length - 1;
          j = sounds.length - 1;
        }//if
  }//ifML
  
  //if the mouse is over the center image
  else if (mouseX >= 51 && mouseX <= 649){
      println("center button");
      //play the sound
      play();
  }//ifMC
  
  //if the mouse is over the right button
  else if (mouseX >= 650 && mouseX <= 700){
      println("right button");
      i++;
      j++;
        if ( i >= (imgUrls.length)){
          i = 0;
          j = 0;
        }//if
  }//ifML
     println(i);
     println(j);
     println(mouseX);
  }//mouse pressed
5. //push list of images into array
  void loadImg(){
  imgUrls= loadStrings("listI.txt");
  images = new PImage[imgUrls.length];
       for(int i = 0; i<imgUrls.length;i++){
          images[i] = loadImage(imgUrls[i]);
            println(i);
       }//fori
  }//loadImg
6. //push list of sounds into array
  void loadSnd(){
  sndUrls= loadStrings("listS.txt");
  sounds = new AudioSnippet[sndUrls.length];
       for(int j = 0; j<sndUrls.length;j++){
          minim = new Minim(this);
          sounds[j] = minim.loadSnippet(sndUrls[j]); //it always says this is the NullPointerException
            println(j);
       }//fori
  }//loadSnd
7. ////draws rectanges to visualize pre and next buttons
  void drawRecL(){
  fill(50);
  rect(0,0,50,600);
  }//drawRec
  void drawRecR(){
  fill(25);
  rect(650,0,50,600);
  }//drawRec
8. //control when the sound file is played
  void play(){
  //if it is not playing then go ahead and play
  if (!sounds[j].isPlaying()){
      // makes sure the file plays from start
      sounds[j].rewind();
      sounds[j].play();
  }//if
  }//play
9. //control when the sound file is stoped
  void close(){
  sounds[j].close();
  minim.stop();
  //
  super.stop();
  }//stop

[FIXED]hard to describe situation with Minim. audio clips not playing all the way through. when played again they start where they left off. what is going on?

[0 Replies]
- 28-Sep-2012 08:15 PM
- Forum: Core Library Questions
First day using sound and processing. Im trying out Minim because it seems the easiest to use. My sketch loads 5 images and allows you to click the right and left edge to cycle the images. if you click the center of the sketch it triggers the sound file to play.

however, the sound file stops a couple seconds early. if you click again it starts from where it left off but doesnt compete. the audio stops playing but will never play the complete track. keep clicking and the sound gets shorter and shorter but never finishes. always starting from where the audio cut out the time before.

im using processing 2.0b3.

and minim 2.02

any help would be great

thank you.

code:
1. import ddf.minim.*;
  import ddf.minim.signals.*;//dont need yet
  import ddf.minim.analysis.*;//dont need yet
  import ddf.minim.effects.*;//dont need yet
2. //minim
  Minim minim;
  AudioPlayer song;
  
  //a variable to contain our array number
  //set to zero because that is the default
  //value of an array
  int imgVar = 0;
3. //our main array var
  int i;
4. //name our arrays
  String[] imgUrls;
  PImage[] images;
5. void setup(){
  size(150, 100);
  background(0);
  loadImg();
  
  //minim
  minim = new Minim(this);
  
  // this loads mysong.wav from the data folder
  song = minim.loadFile("owl.wav");
6. }//setup
7. void draw(){
  drawRecR();
  drawRecL();
8. //draw current image to screen
  image(images[i], 25, 0 );
  }//draw
9. void mousePressed(){
  
  //if the mouse is over left button
  if (mouseX >= 0 && mouseX <= 25){
     println("left button");
     i--;
        if ( i < 0){
          //must subtract from array length to
          //account for 0 being counted
          i = images.length - 1;
        }//if
  }//ifML
  
  //if the mouse is over the center image
  else if (mouseX >= 26 && mouseX <= 124){
      println("center button");
      //play the sound
      play();
  }//ifMC
  
  //if the mouse is over the right button
  else if (mouseX >= 125 && mouseX <= 150){
      println("right button");
      i++;
        if ( i >= (imgUrls.length)){
          i = 0;
        }//if
  }//ifML
     println(i);
     println(mouseX);
  }//mouse pressed
10. //push list of images into array
  void loadImg(){
  imgUrls= loadStrings("list.txt");
  images = new PImage[imgUrls.length];
       for(int i = 0; i<imgUrls.length;i++){
          images[i] = loadImage(imgUrls[i]);
            println(i);
       }//fori
  }//loadImg
11. ////draws rectanges to visualize pre and next buttons
  void drawRecL(){
  fill(50);
  rect(0,0,25,100);
  }//drawRec
  void drawRecR(){
  fill(25);
  rect(125,0,25,100);
  }//drawRec
12. //control when the sound file is played
  void play(){
  song.play();
  }//play
13. //control when the sound file is stoped
  void stop(){
  song.close();
  minim.stop();
  
  super.stop();
  }//stop
********************************************************************************************************************

update: fixed it myself

used the example from learningprocessing.com

here : http://www.learningprocessing.com/examples/chapter-20/example-20-3/

had to switch from calling the audioPlayer to audioSnippet.

added logic to my play method

1. rewind makes sure the file starts from beginning

2. the if statement makes sure it doesnt play if it is already playing
1. import ddf.minim.*;
  import ddf.minim.signals.*;//dont need yet
  import ddf.minim.analysis.*;//dont need yet
  import ddf.minim.effects.*;//dont need yet
2. //minim
  Minim minim;
  AudioSnippet song;// changed this
  
  //a variable to contain our array number
  //set to zero because that is the default
  //value of an array
  int imgVar = 0;
  //our main array var
  int i;
  //name our arrays
  String[] imgUrls;
  PImage[] images;
3. void setup(){
  size(150, 100);
  background(0);
  loadImg();
  
  //minim
  minim = new Minim(this);
  
  // this loads mysong.wav from the data folder
  song = minim.loadSnippet("owl.wav");
  //song.play();
4. }//setup
5. void draw(){
  drawRecR();
  drawRecL();
  // println(mouseX);
  image(images[i], 25, 0 );
  }//draw
6. void mousePressed(){
  
  //if the mouse is over left button
  if (mouseX >= 0 && mouseX <= 25){
     println("left button");
     i--;
        if ( i < 0){
          //must subtract from array length to
          //account for 0 being counted
          i = images.length - 1;
        }//if
  }//ifML
  
  //if the mouse is over the center image
  else if (mouseX >= 26 && mouseX <= 124){
      println("center button");
      //play the sound
      play();
  }//ifMC
  
  //if the mouse is over the right button
  else if (mouseX >= 125 && mouseX <= 150){
      println("right button");
      i++;
        if ( i >= (imgUrls.length)){
          i = 0;
        }//if
  }//ifML
     println(i);
     println(mouseX);
  }//mouse pressed
7. //push list of images into array
  void loadImg(){
  imgUrls= loadStrings("list.txt");
  images = new PImage[imgUrls.length];
       for(int i = 0; i<imgUrls.length;i++){
          images[i] = loadImage(imgUrls[i]);
            println(i);
       }//fori
  }//loadImg
8. ////draws rectanges to visualize pre and next buttons
  void drawRecL(){
  fill(50);
  rect(0,0,25,100);
  }//drawRec
  void drawRecR(){
  fill(25);
  rect(125,0,25,100);
  }//drawRec
9. //control when the sound file is played
  void play(){
  if (!song.isPlaying()){
  song.rewind();
  song.play();
  }
  }//play
10. //control when the sound file is stoped
  void close(){
  song.close();
  minim.stop();
  
  super.stop();
  }//stop

how do you load and display images through a text file using 'loadStrings()'? What does the text file look like on the inside?

[6 Replies]
- 26-Sep-2012 12:30 AM
- Forum: General Discussion
The reference is easy enough to understand if you want to read the contents of a file and not display files based off of one. I have found some good loadStrings() examples on the forum but none of them show the text files or answer my questions.

1. what does the text file look like inside if you want to load a file from your '/data'?

a. do i need specific syntax to tell processing to load the files instead of just read and print the names?

or is this right:

[top of text file]

0.jpg

1.jpg

.

.

.etc

I know how to load images and use arrays. I can make an array of images. but I dont know how to do it without loading each image individually.

any help would be great.

thank you

applet works on windows in IE and FF but not safari for windows. Also, doesnt work at all on macs. "cannot validate certificate for jogl.dll". any advice?

[0 Replies]
- 04-May-2012 03:21 PM
- Forum: Integration and Hardware
so I wrote an applet using opengl. it just loads an obj file and lets the user rotate it with the mouse.

i can upload it and get it to work online with IE and FF on win7x64. but if I use anything related to Apple Inc. it fails to validate certificate for jogl.dll

ive self signed all the jars i am using. im also hosting them as well.

Any word as to where to begin. Ive trolled through my .jnlp files looking for typos or errors but to no avail.

Do apple products treat the paths differently? I am using absolute paths.

Not sure where to start.

thank you for reading this.

[FIXED]processing 1.5 and 2.0a5, "exception in thread, you need to import library" when creating a applet and porting to the web error. OpenGl Help.

[3 Replies]
- 03-May-2012 01:21 PM
- Forum: Core Library Questions
So to fix this error I only used processing 1.5.1 with P3D. I had to redo my .obj file because there was no uv map for the texture to use so it came out strange. but redoing the up map and using a lower polygon count fixed my problems

original post here down

----------------------------------------------------
Exception in thread "Animation Thread" java.lang.RuntimeException: You need to use "Import Library" to add processing.opengl.PGraphicsOpenGL to your sketch.
at processing.core.PApplet.makeGraphics(Unknown Source)
at processing.core.PApplet.size(Unknown Source)
at processing.core.PApplet.size(Unknown Source)
at vase.setup(vase.java:39)
at processing.core.PApplet.handleDraw(Unknown Source)
at processing.core.PGraphics.requestDraw(Unknown Source)
at processing.core.PApplet.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
-----------------------------------------------------

This is the error given, I have tried using 1.5 and 2.0a5 to export the app but they both bring back this error when I run the app online. offline it works. Ive been through my source links and the .jnlp files wondering if it is jogl that is the problem.

my sketch:

----------------------------------------------------------------------------------------------------------------------------------------------------

//it uses OBJLoader and the SAITO example as a base
import processing.opengl.*;
import saito.objloader.*;

OBJModel model ;

float rotX, rotY;

void setup()
{
    size(640, 480, OPENGL);
    frameRate(30);
   ///keep your poly count 32000 and below for obj files
    //or youre going to have a bad time
    //create and load instance of model
    model = new OBJModel(this, "vase.obj", "absolute", TRIANGLES);
    model.enableDebug();
    //scale of model. not sure the relationship to original size
    model.scale(125);
    model.translateToCenter();
    stroke(255);
    noStroke();
}

void draw()
{
   //what color is your background?

0=black, 255=white
    background(25);
    //add some info about model and origins
    String s = "Original Vase found at: Http://www.imamuseum.org/art/collections/artwork/abstract-vessel-black     Artist: Odundo, Magdalene";
    fill(200, 200, 200);
    text(s, 15, 20, 450, 50);

    //retrieve mouse cordinates for later use
    //adds directional light to position of mouse
    float dirY = (mouseY / float(height) - 0.5) * 2;
    float dirX = (mouseX / float(width) - 0.5) * 2;

   //Lights
    //directionalLight(204, 204, 204, -dirX, -dirY, -1);
    ambientLight(255, 200, 200,300,200,-1);
    lightSpecular(255, 255, 255);
    shininess(10.0);
    spotLight(225, 225, 225,0,0,0, -1, 0, 0, 0, 0);
    directionalLight(145,145,145, 300, 200, 10);

   //pushMatrix and popMatrix create little bubble for model to be in
    pushMatrix();//begin changes to model
    translate(width/2, height/2, 0);
    rotateX(rotY*0.4);
    rotateY(rotX*0.4);
    model.draw();
    popMatrix();//end changes to model


}

boolean bTexture = true;
boolean bStroke = false;

void keyPressed()
{
    if(key == 't') {
        if(!bTexture) {
            model.enableTexture();
            bTexture = true;
        }
        else {
            model.disableTexture();
            bTexture = false;
        }
    }

    if(key == 's') {
        if(!bStroke) {
            stroke(255);
            bStroke = true;
        }
        else {
            noStroke();
            bStroke = false;
        }
    }

    else if(key=='1')
        model.shapeMode(POINTS);
    else if(key=='2')
        model.shapeMode(LINES);
    else if(key=='3')
        model.shapeMode(TRIANGLES);
}

void mouseDragged()
{
    rotX += (mouseX - pmouseX) * 0.01;
    rotY -= (mouseY - pmouseY) * 0.01;
}

-------------------------------------------------------------------------------------------------------------------------------------------------

I feel like something is not right within the 'core.jar' that is created when you export. but if i knew i wouldnt be asking for advice.

thank you for taking the time to look this over. hope some one can learn from this

thank you!

[FIXED]tried and failed. now I ask: 'class not found' or certificate verification issues when running applet online? please and thank you!

[4 Replies]
- 02-May-2012 01:13 PM
- Forum: Integration and Hardware
I have a sketch. all it does is display a simple 3d cube and rotate it a little. I export as applet. the generated html will run offline just fine but online it has issues.

FIRST : it will give this error

---------------------------------------------------------------------------------------------

Java Plug-in 1.6.0_31
Using JRE version 1.6.0_31-b05 Java HotSpot(TM) Client VM

java.lang.ClassNotFoundException: Three_D_basic
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.jdesktop.applet.util.JNLPAppletLauncher.startSubApplet(JNLPAppletLauncher.java:1977)
at org.jdesktop.applet.util.JNLPAppletLauncher.access$200(JNLPAppletLauncher.java:662)
at org.jdesktop.applet.util.JNLPAppletLauncher$5.run(JNLPAppletLauncher.java:1325)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
May 2, 2012 3:31:35 PM org.jdesktop.applet.util.JNLPAppletLauncher displayError
SEVERE: Class not found: Three_D_basic
--------------------------------------------------------------------------------------------------------------

SECOND: Changing this gets rid of the 'class not found error'

if i change the jnlp extension from http://jogamp.org/deployment/jogamp-current/jogl-all-awt.jnlp

to any other version I get certificate errors. which i understand if sun/oracle havnt updated their certificates.

----------------------------------------------------------------------------------------------------------------------------------------

FINALLY:

I HAVE self signed my jars

I HAVE unistalled/reinstalled and tried to update my java jdk and what not.

I dont know what I am missing or understand the inner workings of java enough to know where to actually look.

QUESTIONS:

1. when processing exports an applet is there an actual '.class' file generated? because mine does not create such a thing. i kind of assumed there would be one in the jar if anywhere.

2. do I need to do something in my sketch to make things work?

like:



         thisSketch extends pApplet{......and then the sketch   } .. or something

I am running win 7x64

processing 2.0a5

java version 6

IE9 or Firefox both fail

<-------------------------------------------->

Sketch

<-------------------------------------------->

void setup(){
size(400,400, P3D);
fill(255, 190);
}//setup

void draw(){

pushMatrix();
translate(150,150,0);
rotateX(10);
rotateY(10);
rotateZ(10);
box(100);
popMatrix();
}//draw

<-------------------------------------------->

end sketch

<--------------------------------------------->

<---------------------------------------------->

html part that matters

<---------------------------------------------->

.........

<div id="content">

      <div id="Three_D_basic_container">
<applet code="org.jdesktop.applet.util.JNLPAppletLauncher"
  width="400"
  height="400"
  archive="Three_D_basic.jar,opengl.jar,core.jar,
    http://jogamp.org/deployment/jogamp-current/jar/applet-launcher.jar,
    http://jogamp.org/deployment/jogamp-current/jar/jogl.all.jar,
    http://jogamp.org/deployment/jogamp-current/jar/gluegen-rt.jar">
   
   <param name="codebase_lookup" value="false" />
   <param name="subapplet.classname" value="Three_D_basic" />
   
   <param name="noddraw.check" value="true" />
   <param name="progressbar" value="true" />
   <param name="jnlpNumExtensions" value="1" />
   <param name="jnlpExtension1"
   value=" http://jogamp.org/deployment/jogamp-current/jogl-all-awt.jnlp" />
   <param name="java_arguments" value="-Dsun.java2d.noddraw=true" />
   

   <p>
     <strong>
       This browser does not have a Java Plug-in.
       <br />
       <a href=" http://www.java.com/getjava"
   title="Download Java Plug-in">
  Get the latest Java Plug-in here.
       </a>
     </strong>
   </p>

</applet>
      </div>
.......

<-------------------------------------------->

end html part that matters

<--------------------------------------------->

the files created by exporting an applet:

core.jar    ///   I have multi jar unchecked in preferences, should this really be here if there are no libraries imported?

index.html

loading.gif

opengl.jar

Three_D_basic.jar

Three_D_basic.java

Three_D_basic.pde

...class file?

I know this is a lot of info but if there is anything I am missing to settle this problem please let me know. Thank you so much for your time even if you just read this over. I hope someone, including myself , can learn from this.

have a nice day!

--------------------------------------------------------------------------------------------------------------------------------------------

FINAL UPDATE [from me] FOR THIS THREAD:

so i got it to work.    the steps are

1. create sketch

2.export applet

3.use jarsigner to sign core.jar and yoursketchname.jar or anyother .jar file if needed

4. create jnlp file for yoursketchname.jar

5. open and edit html file and update 'href' for jnlp file and its location

6. make sure your jogl path is correct and has the correct version

7. update jogl.jnlp file to correct path of jogl.jar and gluegen.jar [also goes for gluegen.jnlp]

a good explanation to get yourself started is found here:

http://forum.processing.org/topic/is-jre-6-update-21-working-with-processing-applet

my apps will load and work. I am having trouble with my .obj and textures now but i dont think that is related. I created a new topic here:

http://forum.processing.org/topic/processing-1-5-and-2-0a5-exception-in-thread-you-need-to-import-library-when-creating-a-applet-and-porting-to-the-web-error-opengl-help

thank you!

javascript mode will not work with 3D. "SocketTimeoutException". any advice?

[2 Replies]
- 19-Apr-2012 11:25 PM
- Forum: Processing with Other Languages
the full error list:

java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
at java.io.BufferedInputStream.read(BufferedInputStream.java:317)
at processing.mode.javascript.Worker.handleClient(BasicServer.java:401)
at processing.mode.javascript.Worker.run(BasicServer.java:364)
at java.lang.Thread.run(Thread.java:662)
java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:258)
at java.io.BufferedInputStream.read(BufferedInputStream.java:317)
at processing.mode.javascript.Worker.handleClient(BasicServer.java:401)
at processing.mode.javascript.Worker.run(BasicServer.java:364)
at java.lang.Thread.run(Thread.java:662)

so basically, I can get any 2d app to work just fine but any sketch with 3D will not run. it pulls up the webpage , creates the text and graphics but the place where the sketch should be is blank.

Not really sure where to start on this one. any help would be great.

win 7 64.

processing 2.0a5

IE9

**update** just in case it matters, all the sketch does right now is draw a 3d box and rotate it 10 degrees. nothing else or complicated

**update** 4-23-12

Going from processing javascript mode and running directly to web does not work for as of today. However, working in standard mode and exporting an applet does work perfectly. So I am just going to work on embeding the applet for my needs at the moment. I will come back to this eventually however.

using examples or other sketches, nothing involving P2D, P3D, or OPENGL will work on emulator or device. any help?

[1 Reply]
- 15-Apr-2012 12:53 AM
- Forum: Android Processing
Hello. First topic.

I cant get any sketch involving any kind of 3d code or objects to work with processing/android. it will compile and send to the device or emulator but then will be force closed by android.

I wont post any code unless you ask because even the pre-developed examples installed with processing will not work.

right now im using processing 2.0a5 on windows 7 64bit. and yes I am working in android mode as well.

I know that since API 14 for android sdk there are issues with android on windows after some research. Is this one of them? or is there something Im missing?

Thank You for your time

* UPDATE. had a thought. I have always sent sketches via usb, would it matter if I exported the project and then uploaded outside of processing?

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