Hello,
I try to find the intersection point between  bisector and the ellipse. In my sketch this point is the intersection of the red line start from the center of the ellipse pass by the red point C to the radius ellipse. I hope is clear.
I find no equation to calculate this point on internet. So if any body have an idea, thanks

Stan

1. PVector pointA, pointB, pointC ;
   
   void setup()
   {
     pointA = pointB = pointC =new PVector (0,0) ;
     size( 400,400) ;
   }
   
   
   void draw()
   {
     background(0) ;
     float size = 200 ;
     noFill() ;
     stroke(255) ;
     ellipse(width/2, height/2, size, size) ;
    
     //point A
     pointA = new PVector (0,0) ;
     pointA.x = AxisRotationPos(mouseX, width, size /2).x + width /2 ;
     pointA.y = AxisRotationPos(mouseX, width, size /2).z +height/2  ;
     ellipse (pointA.x, pointA.y, 10, 10 ) ;
    
     //pointB
     pointB = new PVector (0,0) ;
     pointB.x = AxisRotationPos(mouseY, height, size /2).x + width /2 ;
     pointB.y = AxisRotationPos(mouseY, height, size /2).z +height/2  ;
     ellipse (pointB.x, pointB.y, 10, 10 ) ;
    
    
     //line
     line(pointA.x, pointA.y, pointB.x, pointB.y) ;
     stroke(250,35,35) ;
     line(width/2, height/2, pointC.x, pointC.y) ;
    
     //point C bisector
     pointC = new PVector(0,0) ;
     noStroke() ;
     fill(250,35,35) ;
     pointC.x = bisector(pointA,pointB).x ;
     pointC.y = bisector(pointA, pointB).y ;
     ellipse(pointC.x, pointC.y, 20,20) ;
   }
   
   
   //ANNEXE VOID
   float rotationPlan ;
   
   PVector AxisRotationPos(int posMouse, int dist, float distanceToFocus)
   {
     PVector pos = new PVector (0,0,0) ;
    
     rotationPlan = map(posMouse, 0, dist, 0, TAU)  ;
    
     PVector marge = new PVector((width -distanceToFocus *2.0) *.5,(height -distanceToFocus *2.0) *.5) ;
    
     float dataPosXY = cos(rotationPlan) *distanceToFocus ;
     float dataPosZ =  sin(rotationPlan) *distanceToFocus ;
    
     pos = new PVector ( dataPosXY, dataPosXY, dataPosZ ) ;
     return pos ;
   }
   
   PVector bisector(PVector p1, PVector p2)
   {
     PVector b ;
     b = PVector.add(p1, p2);
     b.div(2) ;
    
     return b ;
   }

Hello,

I try to make my control mouse camera without peasycam, I'm close but the algorithm is not really ok, that make a zoom when I move. I don't find a solution on the forum.
So if any body have an idea. I'm glad


Thx

1. void setup()
   {
     size( 800,800, P3D) ;
     background(0) ;
     //initialization camera
     cameraP3Dsetup() ;
   }
   
   void draw() {
     background(0) ;
    
     PVector mouseInfo = new PVector (mouseX, mouseY, wheel) ;
     wheel = 0 ;
    
     PVector pos = new PVector (eyePos(mouseInfo).x, eyePos(mouseInfo).y, eyePos(mouseInfo).z ) ;
     // the position of the scene is by default (width /2, height /2, 0 ) ;
     // so if you wan move to the left, you must minus x, and go to the right add sommesthing to the "x",
     // same idea for the top and the bottom, and the depth
     PVector scene = new PVector (0,0,0) ;
     // the direction of the cam is between (-1 to 1 ) , but I don't understand the concept
     PVector dirCam = new PVector (0.0, 1.0, 0.0) ;
     cameraP3Ddraw(pos, scene, dirCam) ;
    
     println("distance between the scene and the camera " + pos.dist(scene)) ;
    
     stroke(255,30,30) ;
     pushMatrix() ;
     translate(width/2, height / 2, 0);
     box(300) ;
     popMatrix() ;
   }
   
   
   PVector centerScene;
   float distanceToFocus ;
   
   void cameraP3Dsetup()
   {
     // give the start distance between the camera and the scene
     if ( width > height ) distanceToFocus = width *3 ; else distanceToFocus = height *3 ;
     //give the starting position of the scene in the display
     centerScene = new PVector (width/2.0, height/2.0, 0) ;
     //camedra direction
   
   }
   
   void cameraP3Ddraw(PVector posCam, PVector posScene, PVector dir ) {
       camera(posCam.x,                    posCam.y,                   posCam.z,
              centerScene.x +posScene.x ,  centerScene.y +posScene.y,  centerScene.z +posScene.z,
              dir.x,                       dir.y,                      dir.z);
   }
   
   PVector cyclusCamera ;
   
   PVector eyePos(PVector mouse)
   {
     PVector pos = new PVector (0,0,0) ;
     distanceToFocus += mouse.z ;
    
     cyclusCamera = new PVector (map(mouse.x, 0, width, 0, TAU), map(mouse.y, 0, height, 0, TAU), map(mouse.x +mouse.y , 0, width +height, 0, TAU)) ;
    
     PVector marge = new PVector((width -distanceToFocus *2.0) *.5,(height -distanceToFocus *2.0) *.5) ;
    
     //THE PROBLEM SURE IS HERE !!!!!
     float dataPosX =  cos(cyclusCamera.x) *distanceToFocus ;
     float dataPosY =  sin(cyclusCamera.y) *distanceToFocus ;
     float dataPosZ =  sin(cyclusCamera.z) *distanceToFocus ;
   
     pos = new PVector ( dataPosX, dataPosY, dataPosZ ) ;
                                  
     return pos ;
   }
   
   
   // mouse wheel event
   float wheel ;
   float checkTheWheel ;
   int countWheelAction ;
   
   void mouseWheel(MouseEvent event) {
     countWheelAction += 1 ;
     checkTheWheel = wheel ;
     wheel = event.getCount();
   }
   

When I use loadFont there is crash with setUndecorated
java.lang.NullPointerException
    at processing.core.PApplet.handleDraw(PApplet.java:2301)
    at processing.core.PGraphicsJava2D.requestDraw(PGraphicsJava2D.java:243)
    at processing.core.PApplet.run(PApplet.java:2141)
    at java.lang.Thread.run(Thread.java:680)

I post this problem on Github but Ben Fry think is not a bug, so if any body have an idea to resolve the conflict between setUndecorated and loadFond. The comment of Ben Fry " (...) At the very minimum, this is causing init() to be called twice. But you're also using unsupported/undocumented things (i.e. setUndecorated) that are causing problems. "

So if any body ahave an idea.

Thx


PFont AmericanTypewriter ;
void setup() {
  size(300,300) ;
  // when I use this void without the setup with :
  // public void removeBorder() that's ok,
  // but inside the setup and is not public there is  problem come too much often
  removeBorder() ;
  //PROBLEM WHEN THIS LINE IS ACTIVE
  AmericanTypewriter=loadFont ("typo/AmericanTypewriter-96.vlw");
}
void removeBorder() {   
  frame.removeNotify();
  frame.setUndecorated(false);
  frame.addNotify();
  super.init();
}

Hello, I want read the public void init() in the setup or after not before, because I wish change the boolean undecorated by loading an external String in the setup().

If anybody have an idea ?

Thx

1. boolean undecorated = false ;
   
   public void init() {
     frame.removeNotify();
     frame.setUndecorated(undecorated);
     frame.addNotify();
     super.init();
   }

Hello, I work around the sketchPath but I've a problem when I make an OS app, he don't find the path when it's an app, but find when I use the sketch. I check the path and it's ok.
If any body have an idea. Thx

1. String   findPathScetch, findPathApp ;
     
   void setup() {
     size(300,300 ) ;
    
   
2.   //work with scetck
     findPathScetch = (sketchPath("") +"data/target.app") ;
    
     //Doesn't work with the app
     findPathApp = (sketchPath("") +"application.macosx/OpenApp.app/Contents/Resources/Java/data/target.app") ;
     println(findPathScetch) ;
   
   }
   void draw() { }
   
   void mousePressed()
   {
3.       open(findPathApp) ;
   
   }
   

Hello,

I try to open app from processing, but nothing happen when I do that. The target app is a processing app. I use P 2b9, on mac Lion.

1. void setup()
   {
     size(300,300 ) ;
   }
   
   void draw()
   {
    
   }
   
   
   void mousePressed()
   {
     // open("targetAPP.app") ;
     open("/Users/stanislasmarcais/Desktop/CODE/Fonction Processing/INTERFACE : AFFICHAGE/SauvegardeChargement/OpenApp/data/targetAPP.app") ;
   }

Hello, I try fo find the property fill, stroke and strokeWeight of children shape but I've problem with the index or something to acces at the information.

1. // The next line is needed if running in JavaScript Mode with Processing.js
   /* @pjs preload="usa-wikipedia.svg"; */
   
   PShape original;
   PShape[] childrenShape ; // to create a shape children from SVG
   
   void setup() {
     original = loadShape("illustrator.svg");
    // println(original.getChildIndex(original)) ;
    //  println(original.getChildren()) ;
    // println(original.getFamily()) ;
    int numChildren ;
    numChildren = original.getChildCount();
    if ( numChildren > 0 ) {
      for ( int i = 0 ; i  < numChildren ; i++) {
        // childrenShape = original.getChildren() ;
        // println(original.getFill(childrenShape[i])) ;
        println(original.getFill(i)) ;
      }
    }
       
     
    // println(original.getFill(0)) ;
   
   }
   

Hello,
I want apply texture on Sphere in PShader mode, that's ok for the mapping but I lost the possibility to move, rotation... the sphere.
If any have an idea, I'll very happy.

Thx

Stan

1. PShader theShader;
   PGraphics offscreen;
   PImage img;
   
   int sDetail = 35;  // Sphere detail setting
   float rotationX = 0;
   float rotationY = 50;
   float velocityX = 0;
   float velocityY = 0;
   float globeRadius = 150;
   float pushBack = 0;
   
   float[] cx, cz, sphereX, sphereY, sphereZ;
   float sinLUT[];
   float cosLUT[];
   float SINCOS_PRECISION = 0.5;
   int SINCOS_LENGTH = int(360.0 / SINCOS_PRECISION);
   
   
   void setup()
   {
     size(800, 600, P3D);
     img = loadImage("BancPublic.jpg");
     //sphere
     initializeSphere(sDetail);
     //offscreen
     offscreen = createGraphics(width,height,P3D);
     //shader
     theShader = loadShader("dither_frag.glsl");
     theShader.set("scale", 10.5);
   }
   
   void draw()
   {
    
    renderGlobeOffscreen();
   
   }
   
   
   
   void renderGlobeOffscreen() {
     offscreen.beginDraw();
     background(0) ;
     pushMatrix();
     translate(width * 0.33, height * 0.5, pushBack);
     pushMatrix();
     offscreen.noFill();
     offscreen.stroke(255,200);
     offscreen.strokeWeight(2);
     offscreen.smooth();
     popMatrix();
     offscreen.lights();   
     pushMatrix();
     offscreen.rotateX( radians(-rotationX) ); 
     offscreen.rotateY( radians(270 - rotationY) );
     offscreen.fill(200);
     offscreen.noStroke();
     offscreen.textureMode(IMAGE); 
      texturedSphere(globeRadius, img);
     popMatrix(); 
     popMatrix();
     rotationX += velocityX;
     rotationY += velocityY;
     velocityX *= 0.95;
     velocityY *= 0.95;
     println(rotationX + " / " + radians(-rotationX) ) ;
   
    
     offscreen.endDraw();
     shader(theShader);
     image(offscreen,0,0);
    
     // Implements mouse control (interaction will be inverse when sphere is  upside down)
     if(mousePressed){
       velocityX += (mouseY-pmouseY) * 0.01;
       velocityY -= (mouseX-pmouseX) * 0.01;
     }
    
   }
   

Hello all,

I want draw a circle with this method, but I've a lot of hole in my disc, if anybody have an idea to make a real full disc, I take it.

1. color c = color(255) ;
   //diameter of circle
   int diam = 200 ;
   
   void setup()
   {
     background(0) ;
     size( 300,300 ) ;
      colorMode(HSB, 360, 100, 100 ) ;
     fill(255) ;
   }
   
   void draw()
   {
     background(0) ;
     PVector pos = new PVector( mouseX, mouseY ) ;
     //make cirlce
     //circle(pos, diam) ;
     //make a disc
    
      disc(pos, diam) ;
     //chromaticCircle(pos, diam) ;
     //chromaticDisc(pos, diam) ;
   }
   
   //DISC
   void disc( PVector pos, int diam )
   {
     for ( int i = 1 ; i < diam +1 ; i++) {
       circle(pos, i) ;
     }
   }
   //CIRCLE
   //classic
   void circle(PVector pos, int d)
   {
     int surface = d*d ; // surface is equale of square surface where is the circle.
   
     int radius = ceil(radiusSurface(surface)) ;
     int numPoints = ceil(perimeterCircle( radius)) ;
     for(int i=0; i < numPoints; i++) {
         float stepAngle = map(i, 0, numPoints, 0, 2*PI) ;
         float angle =  2*PI - stepAngle;
         set(int(pointOnCirlcle(pos, radius, angle).x + pos.x) , int(pointOnCirlcle(pos, radius, angle).y + pos.y), c);
     }
   }
   
   //POINT
   PVector pointOnCirlcle(PVector pos, int r, float angle)
   {
     PVector posPix = new PVector () ;
     posPix.x = cos(angle) *r ;
     posPix.y = sin(angle) *r ;
    
     return posPix ;
   }
   //EQUATION
   float perimeterCircle ( int r )
   {
     //calcul du perimetre
     float p = 2*r*PI  ;
     return p ;
    
   }
   
   //EQUATION
   float radiusSurface(int s)
   {
     // calcul du rayon par rapport au nombre de point
     float  r = sqrt(s/PI) ;
     return r ;
   }
   

Hello all,

I've a problem with

  if(checkClavier(CONTROL ) && checkClavier(KeyEvent.VK_S) ) {

Processing 2.0b8 say me Cannot find anything named "KeyEvent.VK_S" same for other "KeyEvent VK_O" etc

with Processing 2.0b6 there is no problem.

an idea anybody ?

Thanks

Stan

Hello,

I try to use GSvideo and PFont but I've problem with few types. When I use GScapture few type don't display or very bad. who know why ?

I give this example to understand, the typo EastBloc is ok, with the othar the problem start

1. import codeanticode.gsvideo.*;
   GSCapture cam;
   PFont ContainerRegular48, ContainerRegular96,
         EastBloc ;
   
   void setup() {
     size(640,480) ;
     loadPolice() ;
     //cameraSetup() ;
   }
   
   void draw() {  
     // cameras() ;
     textFont(ContainerRegular48, 48 ) ;
     text("I'm here...", 100, 100 ) ;
     //
     textFont(ContainerRegular96, 96 ) ;
     text("I'm here...", 100, 200 ) ;
     //
     textFont(EastBloc, 24 ) ;
     text("Where is ContainerRegular", 100, 300 ) ;
   
   }
   
   void cameraSetup() {
     cam = new GSCapture(this, 640, 480, "0");
     cam.start() ;
   }
   
   void cameras() {
       if( cam.available()) {
       cam.read() ;
       image(cam,0,0) ;
     }
   }
   
   void loadPolice() {
     ContainerRegular48=loadFont         ("Container-Regular-48.vlw");
     ContainerRegular96=loadFont         ("Container-Regular-96.vlw");
     EastBloc=loadFont                 ("EastBlocICGClosed-96.vlw");
   }

Hello all,

I wish see my shape follow a specific path, this one is an ArrayList of points.
My problem is than my shape stop the move to differents coordinates points and I don't understand why, I search, but every time is very differents, depending of the coordinate. Some time just after the first point, some time after three round....
If any one have an idea, I take it now !

Thx

Stan

1. Follow fllw ;
   
   float speed = 0.5 ;
   PVector position = new PVector(-1, -1 )  ; // to initialize the position
   
   
   void setup()
   {
     size(400,400) ; background(255) ;
     fllw = new Follow() ;
    
      fllw.Path() ; // add point to the path example
      //fllw.readPointsToThePath() ; // add point from file.txt
    
   }
   
   void draw()
   {
     background(255) ;
    
     fllw.path() ; // draw the path
     position = fllw.follow(position, speed) ; // feed back the position from the class Follow
     translate(position.x, position.y) ; // update the position of the Shape
     shape1() ;
    
   }
   
   
   void shape1()
   {
     noFill() ;
     ellipse(0,0, 50, 50 ) ;
   }
   
   void mousePressed()
   {
     // fllw.addPointToThePath() ;
   }
2. //////////////////////////////////
   
3. class Follow
   {
     // list of the keypoint, use super_class Path
     ArrayList<Path> listP ;
     // distance between the keypoint and the position of the translation shape
     float distObjectFromStartKeyPoint = 0 ;
     float distBetweenTwoKeyPoints = 0 ;
     // a & b are points to calculate the direction and position of the translation to give at the shape
     PVector a, b ;
     // calcul the gap between a & b
     PVector c = new PVector (0,0,0) ;
     // speed ratio to adjust the speed xy according to position target
     PVector r = new PVector (0,0,0) ;
     //keypoint
     PVector pos ;
     //keypoint example
     PVector pos1, pos2, pos3, pos4, pos5, pos6 ;
     // find a good keypoint in the ArrayList
     int n = 0 ;
     int m = 1 ;
   
     Follow() {
       listP = new ArrayList<Path>() ;
     }
    
     PVector follow(PVector position, float speed)
     {
       if (listP.size() > 1 ) {  
         // find a good keypoint in the list
         Path pthA = (Path) listP.get(n) ;
         Path pthB = (Path) listP.get(m) ;
         // update the position a & b from the list of keypoint  
         a = pthA.pos ;
         b = pthB.pos ;
         // give a starting position of the path, must use the same xyz than initialize PVector, here it's -1, -1
         if (position.x == -1 && position.y == -1 ) { position.x = a.x ; position.y = a.y ; }
         // distance between the keypoint a & b and the position of the translation shape
         distBetweenTwoKeyPoints = PVector.dist(a, b ) ;
         distObjectFromStartKeyPoint = PVector.dist(position, a) ;
    
         
         //update the position
         if ( distObjectFromStartKeyPoint < distBetweenTwoKeyPoints ) {
           // calcul speed ratio
           float cx = a.x -b.x ;
           float cy = a.y -b.y ;
           // final calcul ratio
           r.x = cx /cy ;
           r.y = cy /cx ;
           if(abs(r.x) > abs(r.y) ) { r.x = 1.0 ; r.y = abs(r.y) ; } else { r.x = abs(r.x) ; r.y = 1.0 ; }
           
           // Give the good direction to the translation
           if ( cx == 0 ) {
             position.x += 0 ;
             if (a.y - b.y < 0 )  position.y += speed ;  else position.y -= speed ;
           }
           if ( cy == 0 ) {
             if (a.x - b.x < 0 )  position.x += speed ;  else position.x -= speed ;
             position.y += 0 ;
           }
           if ( cx != 0 && cy != 0  )  {
             if (a.x - b.x < 0 )  position.x += (speed *r.x) ;  else position.x -= (speed *r.x) ;
             if (a.y - b.y < 0 )  position.y += (speed *r.y) ;  else position.y -= (speed *r.y) ;
           }
   
          println ("cx: " + cx + " cy: " + cy) ;
         //  println("rapport: " +abs(r.x) + " / " + abs(r.y) ) ;
         // println("n:"+ n + " m:" + m + " size:" +listP.size() ) ;
          println("a:" + a.x + "/"+ a.y + " b:" + b.x + "/" + b.y ) ;
    
         }
         //change to the next keypoint
         if ( a.x < b.x && position.x >= b.x  ) { n += 1 ; m += 1 ; }
         if ( a.x > b.x && position.x <= b.x  ) { n += 1 ; m += 1 ; }
         // to close the loop
         if ( m >= listP.size()  )  { n = listP.size() -1 ; m = 0 ; }
         if ( n >= listP.size()  )  { n = 0 ; m = 1 ; }
       } else {
         position.x = width /2 ;
         position.y = height /2 ;
       }
       ////////////////
       return position ;
       /////////////////
     }
     // to draw the path
     void path ()
     {
       for (int i=0 ; i < listP.size() ; i++) {
         Path pth = (Path) listP.get(i) ; // we must indicate wich one in the list or use the method above "for ( Path pth : listP )"
         fill(255,25,25) ;
          text(i + "///" + pth.pos.x + "/" + pth.pos.y , pth.pos.x, pth.pos.y ) ;
         // text(pth.pos.x + "/" + pth.pos.y , pth.pos.x, pth.pos.y ) ;
         pth.keyPoint() ;
       }
     }
     // add point to the path from the mousePressed
     void addPointToThePath()
     {
       pos = new PVector (mouseX, mouseY ) ;
       Path pth = new Path (pos) ;
       listP.add(pth) ;
     }
     // to read the coordinates of path from file.txt
     void readPointsToThePath()
     {
       listP.clear() ;
       String[] path = loadStrings("path.txt");
       
       for ( int i = 0 ; i < path.length ; i++) {
         String[] pt = path[i].split(",");
         pos = new PVector (float(pt[0]), float(pt[1])) ;
         Path pth = new Path (pos) ;
         
         listP.add(pth) ;
        // pointCount++;
       }
     }
     // void for the example keypoint
     void Path()
     {
       /*
       float ox = width /2.0 ;
       float oy = height/2.0 ;
       pos1 = new PVector( ox,oy ) ;
       pos2 = new PVector( ox -100, oy -50 ) ;
       */
       pos3 = new PVector(100,10) ;
       pos4 = new PVector(90,145) ;
       pos5 = new PVector(175,170) ;
       pos6 = new PVector(185,120) ;
       
     // Path pth1 = new Path (pos1) ;
      // Path pth2 = new Path (pos2) ;
       Path pth3 = new Path (pos3) ;
       Path pth4 = new Path (pos4) ;
       Path pth5 = new Path (pos5) ;
       Path pth6 = new Path (pos6) ;
      // listP.add(pth1) ;
      // listP.add(pth2) ;
       
       listP.add(pth3) ;
       listP.add(pth4) ;
       listP.add(pth5) ;
       listP.add(pth6) ;
       
     }
   }
4. // super class use to create an ArrayList in the class Follow
   class Path
   {
     PVector pos ; 
    
     Path(PVector pos_ ) {
       pos = pos_ ;
     }
    
     void keyPoint ()
     {
       strokeWeight(5) ;
       point (pos.x, pos.y ) ;
     }
     //RETURN position of the keypoint
     PVector pos() {
       return pos ;
     }
   }
   

Hello all,

new day, new problem !!!
I try to make a layer system and sort the layer from the top to the bottom.
But I've big problem to sort the objects from my ArrayList.
The idea it's to show the level of the layer and give the position, if it's the first, second,... or the last.
I try to extract the level of my layer list to copy in list of rank to sort this one, because I don't manage to sort directly my list of object... I try to make an example short, but don't manage too. So I give the big sketch.
I see few solution in the forum, but very complex for me...I just find the solutions with Collections.sort(arg).

I show the problem is in the part 3 between ///////////////////// and ///////////////

1. color BG = color(100,95,95) ;
   
   ControlLayer cLayer ;
   PVector posLayer = new PVector (0,0) ;
   PVector sizeLayer = new PVector (0,0) ;
   
   float rowHeight = 30.0 ;
   float margin = 6.0 ;
   
   void setup ()
   {
     size (500, 500 ) ; background( BG) ;
     cLayer = new ControlLayer(rowHeight) ;
   }
   
   void draw ()
   {
     background( BG) ;
     cLayer.display() ;
     float mrg = margin /2.0 ;
     for (int i = 0 ; i < height ; i += rowHeight ) {
       stroke(0) ;
       strokeWeight(1) ;
      
       line (0, i-mrg , width , i-mrg ) ;
       line (0, i+mrg , width , i+mrg ) ;
     }
   }
   
   void mousePressed()
   {
     float posY = (floor(mouseY / rowHeight) * rowHeight) + rowHeight / 2.0 ;
     // println (posY) ;
     posLayer.x = mouseX ;
     posLayer.y = posY ;
     sizeLayer.x = width ;
     sizeLayer.y = rowHeight -margin ;
     int identity = round(random(1,6)) ;
     cLayer.addLayer(posLayer, sizeLayer, identity) ;
   }
2. class ControlLayer
   {
     ArrayList<Layer> listLayer ;
     float rowHeight ;
     int maxLayer = 5 ;
    
     ControlLayer(float rowHeight)
     {
       this.rowHeight = rowHeight ;
       listLayer = new ArrayList<Layer>() ;
     }
     //////////////////
     void addLayer (PVector p, PVector s, int ID)
     {
       for ( Layer lyr : listLayer ) {
        
         if (lyr.detection() || listLayer.size() > maxLayer-1) {;
           return ;
         }
        
       }
       //Layer lyr = new Layer(p, s, rowHeight, Layer.ID1) ; // example to call the ID directly from the class Layer
      Layer lyr = new Layer(p, s, rowHeight, ID) ;
       listLayer.add(lyr) ;
   }
    
     void display()
     {   
       for ( Layer lyr : listLayer ) {
         lyr.drag(listLayer) ;
         lyr.update() ;
         lyr.collision(listLayer) ;
        
         println(lyr.getRanking() ) ;
        
         lyr.display() ;
         lyr.info(listLayer) ;     
       }
     }
   }
3. class Layer
   {
     private color c ;
     private color noir = color (0) ;
     private color blanc = color (255) ;
     private color rouge = color (215,30,30 ) ;
     private color orange = color (255,150,0 ) ;
     private color jaune = color (255,230,0 ) ;
     private color violet = color (150,90,200 ) ;
     private color vert = color (160,180,70 ) ;
     private color bleu = color (90,170,200 ) ;
     private color IDcolor1 = orange ;
     private color IDcolor2 = jaune ;
     private color IDcolor3 = rouge ;
     private color IDcolor4 = violet ;
     private color IDcolor5 = bleu ;
     private color IDcolor6 = vert ;
    
     PVector p, s ;
     float newPosX, newPosY ; // we cannot use PVector for this relay, if we use PVector relay the object don't come back
     float rowHeight ;
    
     // identity of layer
     int ID = 0 ;
     final static int ID1 = 1 ;
     final static int ID2 = 2 ;
     final static int ID3 = 3 ;
     final static int ID4 = 4 ;
     final static int ID5 = 5 ;
     final static int ID6 = 6 ;
    
     // ranking of layer
     int rankLayer = 1 ;
     ArrayList listRanking ;
     // boolean to move the layer
     boolean inside, locked, contact ;
     boolean dropped = true ;
    
     Layer(PVector p, PVector s, float rowHeight, int ID)
     {
       rectMode (CENTER) ;
       this.p = p ;
       newPosX = p.x ;
       newPosY = p.y ;
    
       this.s = s ;
       this.rowHeight = rowHeight ;
       this.ID = ID ;
      
       listRanking = new ArrayList() ;
     }
    
     void update()
     {
         float posY = (floor(mouseY / rowHeight) * rowHeight) + rowHeight / 2.0 ; // move in the row grid
         if(locked) { // if the layer is locked he follow the mouse
         newPosX = mouseX ;
         newPosY = posY ;
       } else if (contact && !locked && !dropped) {
         c= blanc ;
         newPosX = p.x ;
         newPosY = p.y ;
       } else if (contact) {
         c= blanc ;
       } else {
         c = noir ;
         newPosX = newPosX ;
         newPosY = newPosY ;
       }
     }
    
     void display()
     {
       if      ( ID == 1 ) c = IDcolor1 ;
       else if ( ID == 2 ) c = IDcolor2 ;
       else if ( ID == 3 ) c = IDcolor3 ;
       else if ( ID == 4 ) c = IDcolor4 ;
       else if ( ID == 5 ) c = IDcolor5 ;
       else if ( ID == 6 ) c = IDcolor6 ;
       else c = noir ;
       fill(c) ;
      
       noStroke() ;
       // rect (newPosX, newPosY, s.x, s.y ) ; // basic
       rect (width/2, newPosY, s.x, s.y ) ;
     }
     // DRAG
     void drag(ArrayList<Layer> listLayer)
     {
       // check if boolean inside is true and the mouse is pressed
       if (detection() ) inside = true;  else inside = false;
      
       if ( inside && mousePressed && !otherLocked(listLayer)  )  { locked = true ; dropped = false ; }
       if ( !mousePressed ) { locked = false ;  }
       if ( !mousePressed && !inside  ) { dropped = true ;  }
     }
     //COLLISION.CONTACT.NoCONTACT
     //::Collision
     void collision(ArrayList<Layer> listLayer )
     {
       for (Layer target : listLayer) {
         if (target != this) {
           //check if two layers are in contact
           if (collide(target)  ) {
               contact = true ;
               break ; // we must stop the loop at the first collide
           } else {
               contact = false ;
           }
         }
       }
     }
     //INFO
     //show info
     void info (ArrayList<Layer> listLayer)
     {
       fill (noir) ;
       rankingLayers(listLayer) ;
       text (rank() + " / " + rankLayer, 10, newPosY +5 ) ; // give the rank of layer from the top of board
     }
     ///////////////THE PROBLEM IS HERE////////////////////////
     /////////////////////////////////////////////////////////
     // ranking the layer from the top to the bottom
     void rankingLayers(ArrayList<Layer> listLayer )
     {
       // clear the rank list to update the ranking
       listRanking.clear() ;
      
       for (Layer target : listLayer) {
         if ( listRanking.size() != listLayer.size()  ) {
           listRanking.add(target.rank()) ;
         }
       }
       Collections.sort(listRanking) ;
     //  String r = (listRanking) ;
     //  println(listRanking) ;
   /*   
       listLayer.clear() ;
      
       for( Layer lyr : listRanking ) {
         if ( listRanking.size() != listLayer.size() ) {
           listLayer.add(lyr) ;
         }
       }
     */   
      // println(listRanking) ;
      
     }
     //RETURN
     // return rank from the top of board
     ArrayList getRanking() {
       return listRanking ;
     }
     ////////////////////////////////////////////////////////
     ////////////////////////////////////////////////////////
     int rank() {
       int r = floor(newPosY / rowHeight) +1 ;
       return r ;
     }
     // check if the cursor is on the layer or not
     boolean detection() {
       if( mouseX >  newPosX - s.x /2.0 &&
           mouseX <  newPosX + s.x /2.0 &&
           mouseY >  newPosY - s.y /2.0 &&
           mouseY <  newPosY + s.y /2.0) {
         return true;
       } else {
         return false;
       }
     }
     //
     // Make sure no other buttons are active in the list of objects wished
     boolean otherLocked(ArrayList<Layer> listLayer)
     {
       for (Layer lyr : listLayer ) { // don't need to call the the ArrayList because we call this one in the Collision Void
         if (lyr.locked) {
           return true;
         }
       }
       return false;
     }
     //
     // see if there is collide between two things
     boolean collide(Layer target)
     {
       float distanceX = newPosX - target.newPosX ;
       float distanceY = newPosY - target.newPosY ;
       float treshX = s.x /2.0 + target.s.x /2.0 ;
       float treshY = s.y /2.0 + target.s.y /2.0 ;
      // println(abs(distanceY) + " / " + treshY) ;
       if (abs(distanceX) < treshX && abs(distanceY) < treshY) {  // if the distance is less than the threshold, we are colliding!
         return true;
       } else {
         return false;
       }
     }
     ///////////////
   }
   

Hello all,

I search an idea to named class like an array, because I need a lot of classes, may be thirty, may be more with a same familly name. And i don't want write the name and add a number for calling the class, calling the void...etc. I don't find a topic about that, may be is not possible?
I make an example with three classes and classical system,
but I should make something like that
    for ( int i = 0 ; i < n ; i++ ) {
      String  a = "Object" ;
      String classObject = a + (i+1) ;
       if ( i+1 == 1 ) obj1 = new Object1() ;
}

1. Object obj ;
   
   void setup()
   {
     size(300,300) ;
     obj = new Object () ;
   }
   
   void draw()
   {
     background(0) ;
     obj.display() ;
   }
   // class Call
   class Object
   {
     int n ; // quantity of class must be open
    
     Object1 obj1 ;
     Object2 obj2 ;
     Object3 obj3 ;
    
     Object() {
       // read the .txt with the info with quantity of class must be open
       /*
       String call[] = loadStrings("/Users/stanislasmarcais/Desktop/ROMANESCO/Romanesco_Beta/TestInterface/importationProgShape/importationProgShape1a/data/ClassShape.txt");
       for (int i = 0 ; i < call.length ; i++ ) {
         String [] cut = split(call[i], ':' ) ;
         String nObject = cut[1] ;
         n = int(nObject) ;
       }
       */
       int call = 3 ;
       n = call ;
      
       for ( int i = 1 ; i <= n ; i++ ) {
         if ( i == 1 ) obj1 = new Object1() ;
         if ( i == 2 ) obj2 = new Object2() ;
         if ( i == 3 ) obj3 = new Object3() ;
       }
     }
    
     void display()
     {
       text ("Total class Objects: " + n, 20, 20 ) ;
       for ( int i = 1 ; i <= n ; i++ ) {
         if ( i == 1 ) obj1.display() ;
         if ( i == 2 ) obj2.display() ;
         if ( i == 3 ) obj3.display() ;
       }
     }
   }
   // class called
   class Object1
   {
     Object1 () {}
     void display() { text("First class object", 20 , 40) ; }
   }
   class Object2
   {
     Object2 () {}
     void display() { text("Second class object", 20 , 60) ; }
   }
   class Object3
   {
     Object3 () {}
     void display() { text("Third class object", 20 , 80) ; }
   }
   
   
   

Thank for your help, and sorry for my english.

Stan

Hello Everybody,
I try to make a system to show the collision between particles, not the effect ; for that it's ok.
So in my example I want see particles white and add the number between them when there is collision. It's ok when there is two particles, but with more the last particle make law for the number, and for the color all particles must be together to became white. I walk around my code since few days but I don't find the other way of code.
So if anybody have an idea, i take it, i don't find track of my purpose in the forum.

PS : clic to create particle, you can drag this.

1. ArrayList<Atom> listA ;
2. int count = 0 ;
3. void setup ()
4. {
5.   size (400,400) ;
6.   listA =            new ArrayList<Atom>();
7. }
8. void draw()
9. {  
10.   background(0) ;
11.   for (Atom atm : listA)
12.   {
13.     atm.update(listA) ;
14.     atm.display() ;
15.     atm.drag2D() ;
16.    
17.     atm.collision(listA) ;
18.    
19.    
20.    
21.   }
22. }
23. void mousePressed()
24. { 
25.   PVector posA = new PVector ( mouseX, mouseY) ;
26.   for (Atom atm : listA)
27.   {
28.     if(atm.insideAtom()) return ;
29.   }
30.   count += 1 ;
31.   Atom atm = new Atom( posA, count) ;
32.   listA.add(atm) ;
33. }
34. //////////CLASS ATOM//////////////////////////////////////////////////////////
35. /////////////////////////////////////////////////////////////////////////////
36. class Atom
37. {
38.   ArrayList<Atom> listA_collision ;
39.   ArrayList<Atom> listA_noCollision ;
40.  
41.   boolean lock, inside, collision ;
42.   int d = 50 ;
43.   PVector pos ;    // position of the atom
44.   PVector vel = new PVector ( random(-1, 1), random(-1, 1)) ; // velocity of the atom
45.   color blanc = color (255) ;
46.   color rouge = color (255, 35, 35) ;
47.   color c = rouge ;
48.   int count, numero, addCount ;
49.  
50.   Atom( PVector p_, int count_) {
51.     pos = p_ ;
52.     count = count_ ;
53.     listA_collision = new ArrayList<Atom>();
54.     listA_noCollision = new ArrayList<Atom>(); 
55.   }
56.   //::::::::::Display
57.   void display()
58.   {
59.     numero = count + addCount  ;
60.     fill(c) ;
61.     ellipse(pos.x, pos.y, d, d) ;
62.     fill(0) ;
63.     text (numero, pos.x, pos.y ) ;
64.   }
65.   //:::::::Update
66.   void update(ArrayList<Atom> listA)
67.   {
68.     int r = radius() ;
69.     // wall right
70.     if (pos.x > width -r || pos.x < r ) {
71.     vel.x = -vel.x  ;        
72.     } else if (pos.y > height -r || pos.y < r  ) {
73.       vel.y = -vel.y ;    
74.     }
75.     pos.x +=vel.x ;
76.     pos.y +=vel.y ;  
77.   }
78.   //::::::::::Collision
79.   void collision(ArrayList<Atom> listA )
80.   {
81.     for (Atom target : listA) {
82.       //listA_collision.clear() ;
83.       if (target != this) {    // don't collide with ourselves. that would be weird.
84.          if (!collide(target)) {
85.           noContact(target) ;
86.           listA_collision.add(target); // when a collision is found, add it to a list for later use.
87.          // return ;
88.         }
89.         if (collide(target)) {
90.           listA_collision.add(target); // when a collision is found, add it to a list for later use.
91.           contact(target) ;
92.           println("Target List :" + listA_collision.size()) ;
93.           println("Atom List :" + listA.size()) ;
94.         }
95.       }
96.     }
97.     listA_collision.clear() ;
98.   }
99.   //::::::::Contact and NoContact
100.   void contact (Atom target) 
101.   {
102.     addCount = target.count ;
103.     color colorC = colorIn (target);
104.   }
105.   //______
106.   void noContact (Atom target) 
107.   {
108.     addCount = 0 ;
109.     color colorC = colorOut (target);
110.   }
111.  
112.   //:::::::::DRAG
113.   void drag2D() {
114.     inside = detectionCursor2D() ;
115.     if(mousePressed && inside) {
116.       lock = true;
117.     }
118.     if(!mousePressed) {
119.       lock = false;
120.     }
121.     if(lock)  {
122.       pos.x = mouseX;
123.       pos.y = mouseY;
124.     }
125.   }
126. //:::::::::::::::::::RETURN:::::::::::::::::::::::::::::::::::::
127.   //::::::::::::Color
128.   color colorIn(Atom target)
129.   {
130.     color newColor = color (blanc) ;
131.     c = newColor ;
132.     return newColor ;
133.   }
134.   //::::::::::::::
135.   color colorOut (Atom target)
136.   {
137.     color newColor = color (rouge, 175) ;
138.     target.c = newColor ;
139.     return newColor ;
140.   }
141.   //:::::::::::::Detection
142.   // Detection the cursor is on the atom
143.   boolean detectionCursor2D() { return dist(pos.x, pos.y, mouseX, mouseY) < d / 2; }
144.  
145.   //:::::::::detect a collision with the other proton
146.   boolean collide(Atom target)
147.   {
148.     float distance = target.pos.dist(pos);      // distance between our center and the other ball center
149.     float thresh = target.radius() + radius();
150.     if (distance < thresh) {                   // if the distance is less than the threshold, we are colliding!
151.       return true;
152.     } else {
153.       return false;
154.     }
155.   } 
156.   //::::::::::::::::::::::::::::::::
157.   boolean insideAtom() { if (inside) { return true ; } else { return false ; } }
158.  
159.   //::::::::::::::::::::Misc
160.   int radius() { return d/2 ; }
161. }

Hello,
I have problem with my lock particle...I want forbiden the creation of particle when this one is lock for the drag.
I white a note on the Sketch where the problem is.

Thank you

1. Molecule mlcl ;
   color colorAtom = color( 0, 0, 0, 255) ; // blanc
   
   void setup() {
     size (400, 400) ; frameRate(25) ;
     mlcl = new Molecule() ;
    
   }
   
   
   void draw() {
     background(255, 30, 30) ;
     // fonction class Molecule
     // call Molecule for Atom
     mlcl.displayAtomMolecule2D(25, colorAtom) ; // class.void(diameter of atome)
     mlcl.updateAtomMolecule2D(25) ;
     mlcl.mvtAtomMolecule2D() ;
     // call Molecule
     mlcl.drawMolecule2D() ;
    
   }
   void mousePressed()
   {
     mlcl.addAtomMolecule2D(mouseX, mouseY ) ;
   }
   
   
   class Molecule
   {
     Atome atm ;
     ArrayList<Atome> listeA; // Crée une liste d'après une class ou une librairie.
    
     Molecule()
     {
       listeA = new ArrayList<Atome>();
     }
     //::::::::::::::::::::::::::::::::::
     ////////////////////////THE PROBLE IS HERE\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
     //::::::::::::::::::::ATOME:::::::::::::::
     //:::::::::::add point to molecul
     void addAtomMolecule2D(float nAX, float nAY)
     {
       atm = new Atome(nAX, nAY, 0);
       listeA.add(atm) ;
          
       for (int i=0 ; i < listeA.size() ; i++ )
       {
         atm = (Atome) listeA.get(i) ;
         println(atm.lock) ;
       }
     //if (lockA()) {println("true") ; } else{ println("false"); }
         //println(atm.lock_()) ;
     }
     //::::::::::::::::::::Display / Update / Mvt
     void displayAtomMolecule2D(int diam, color cA)
     {
       for (int i=0 ; i < listeA.size() ; i++ )
       {
         atm = (Atome) listeA.get(i) ; // acces to everything in the list
         atm.displayClassAtome2D(diam, cA) ;
       }
     }
     //::::::::::::::::::::::::update
     void updateAtomMolecule2D(int diam)
     {
       for (int i=0 ; i < listeA.size() ; i++ )
       {
         atm = (Atome) listeA.get(i) ; // acces to everything in the list
         atm.updateClassAtome2D(diam) ;
         println(atm.lock_()) ;
       }
     }
     //:::::::::::::::mouvement
     void mvtAtomMolecule2D()
     {
       for (int i=0 ; i < listeA.size() ; i++ )
       {
         atm = (Atome) listeA.get(i) ; // acces to everything in the list
         atm.mvtAtom2D(2.0 , 2.0) ;
       }
     }
    
     //::::::::::::MOLECULE::::::::::::::::::::::::::::::::::::
     //::::::draw molecul
     void drawMolecule2D()
     {
       //draw molecule
       fill(0,0,0,30) ;
       stroke(255,255,255,255) ;
       strokeWeight(1) ;
      
       beginShape() ;
       for (Atome a: listeA ) { vertex(a.x, a.y) ; }
       endShape(CLOSE) ;
      
   
     }
    
     //::::::update atome
   
   //:::::::::::::::::: 
   
   }
   class Atome
   {
     float x, y, z ;
    
     boolean inside, lock ;
    
     color inAtom = color (255, 255, 255, 255) ; // noir
    
     Atome (float aX, float aY, float aZ )
     {
       x = aX ; y = aY ; z = aZ ;
     }
    
     // Detection the cursor is on the atom
     boolean detection2D (int d)
     {
       float disX = x - mouseX  ;
       float disY = y - mouseY  ;
         if (sqrt(sq(disX) + sq(disY)) < d / 2 )     { return true ; } else { return false ; }
     }
     // return if Atom is lock or not
     boolean lock_()
     {
       if (lock)     { return true ; } else { return false ; }
     }
    
    
   //::::::::::2D
     void mvtAtom2D ( float aMX, float aMY)
     {
       float nx = random( -aMX, aMX );
       float ny = random( -aMY, aMY );
      
       x = x +nx ;
       y = y +ny ;
     }
     // update atome ( position, detection...)
     void updateClassAtome2D ( int diam ) {
   
       strokeWeight(diam) ;
      
       if(detection2D(diam))        { inside = true ; } else { inside = false ; }
       if(mousePressed && inside)   { lock = true; }
       if(!mousePressed)            { lock = false; }
       if(lock)                     { x = mouseX; y = mouseY; }
     }
     // Display the property of Atome
     void displayClassAtome2D ( int diam, color cA ) {
   
       strokeWeight(diam) ;
       if(inside) { 
         fill(cA) ; stroke(cA) ;
       } else {
         fill(inAtom) ; stroke(inAtom) ;
         inside = false ;
       }
       point (x, y) ;
       // test
       //if(!lock_()) { println ("false") ; } else { println ("true") ; }
      
     }
   //:::::::::::::::
   }