hi all

i am adapting the example 'myron bounding boxes' to make a selective motion tracking system.

i've already adapted it so that on each click of the mouse a new tracking color is adopted and boxes drawn around it.

now i want to create just one instance of tracking box; ie the box that begins immediately around where the mouse clicked.

does anyone know how to do this? pointers would be appreciated

ta
sam


here is the code...



import JMyron.*;

int r = 255;
int g = 255;
int b = 255;

color chooseColor;

JMyron m;//a camera object

void setup(){
 size(320,240);
 m = new JMyron();//make a new instance of the object
 m.start(width,height);//start a capture at 320x240
 
 
 noFill();
}

void draw(){
 m.trackColor(r,g,b,50);//R, G, B, and range of similarity
 m.minDensity(10); //minimum pixels in the glob required to result in a box
 
 m.update();//update the camera view
 drawCamera();//draw the camera to the screen
 int[][] b = m.globBoxes();//get the center points

 //draw the boxes
 stroke(255,0,0);
 for(int i=0;i<b.length;i++){
   rect( b[i][0] , b[i][1] , b[i][2] , b[i][3] );
 }

}

void drawCamera(){
 int[] img = m.image(); //get the normal image of the camera
 loadPixels();
 for(int i=0;i<width*height;i++){ //loop through all the pixels
   pixels[i] = img[i]; //draw each pixel to the screen
 }
 updatePixels();

}

void mousePressed(){
 int loc = mouseX + mouseY*width;
 chooseColor = pixels[loc];
 r = int(red(chooseColor));
 g = int(green(chooseColor));
 b = int(blue(chooseColor));
}

nice conversation i'm having with myself, but anyway, in case anyone is following it:

i've got to the point where i'm calling different instances of jmyron camera object up through an array list on each click of the mouse; the tracking color for that object is defined by the pixel the mouse is clicked on.

theoretically this should work... but it seems that jmyron can only 'start' the camera once - the second mouse click (which triggers the second object 'start') appears to crash everything... i get this message:

myron_ezcam_run() failed at cam->initCamera()
Myron: myron_ezcam_run() failed

am i right in saying that jmyron can only start one feed from the camera? is there a cunning way round this?

Be great to know if anyone knows...

S






code follows






//TAB 1

import JMyron.*;

int p1;
int p2;
 
ArrayList trackings;

void setup() {
 size(640,480);
 trackings = new ArrayList();
 noFill();
 smooth();
 }

void draw() {
 trackDraw();
}

void trackDraw(){
 stroke(200);
 strokeWeight(1);
 for (int i = trackings.size()-1; i >= 0; i--) {
   Tracking tracking = (Tracking) trackings.get(i);
   tracking.draw();
   }}
 
void mousePressed() {
 //create new tracking with mouse X,Y, position
 p1 = mouseX;
 p2 = mouseY;
 for (int i = trackings.size()-1; i >= 0; i--) {
   Tracking tracking = (Tracking) trackings.get(i);
   tracking.m.stop();
   }
 trackings.add(new Tracking(p1,p2));
 for (int i = trackings.size()-1; i >= 0; i--) {
   Tracking tracking = (Tracking) trackings.get(i);
   tracking.m = new JMyron();//make a new instance of the object
   tracking.m.start(width,height);
   }}


//TAB 2


class Tracking {
 
 
 JMyron m;//a camera object

 color chooseColor;
 
 int r = 255;
 int g = 255;
 int b = 255;

 int s1;
 int s2;
 int or1;
 int or2;

 float prox;

 int loops;

 int num = 2000;
 int[] xpos = new int[num];
 int[] ypos = new int[num];
 
 
 
 Tracking(int a, int b){
   or1= a;
   or2 = b;
   s1 = a;
   s2 = b;
   }
 
 
void draw() {
 
 ellipse(or1,or2,50,50);
 if (loops == 0){
   initialise();
   }
   
 m.update();//update the camera view
 drawCamera();//draw the camera to the screen
 
 if (loops == 0){
   get_color();
   loops++;
   }
   
 m.trackColor(r,g,b,100);//R, G, B, and range of similarity
 m.minDensity(50); //minimum pixels in the glob required to result in a box
 
 
 int[][] b = m.globBoxes();//get the box points
 int[][] c = m.globCenters();//get the centre points
 
 //draw the boxes
 stroke(255,0,0);
 
 for(int i=0;i<b.length;i++){
   prox =  abs(dist(s1,s2, c[i][0], c[i][1]));
     if (prox<100){
       rect( b[0][0] , b[0][1] , b[0][2] , b[0][3] );
       update( c[0][0] , c[0][1]);
       s1=c[0][0];
       s2=c[0][1];
 }}
 trail();
 }
 
 
 
 

 
void get_color(){
int loc = s1 + s2*width;
 chooseColor = pixels[loc];
 r = int(red(chooseColor));
 g = int(green(chooseColor));
 b = int(blue(chooseColor));
}


void drawCamera(){
 int[] img = m.image(); //get the normal image of the camera
 loadPixels();
 for(int i=0;i<width*height;i++){ //loop through all the pixels
   pixels[i] = img[i]; //draw each pixel to the screen
 }
 updatePixels();
 }

void update(int newX, int newY) {
   for(int i = 0; i < xpos.length; i++){
   if (xpos[i] == 0 && ypos[i] == 0){
     xpos[i]=s1;
     ypos[i]=s2;}}    
 for(int i = 1; i < xpos.length; i++){
   xpos[i-1] = xpos[i];
   ypos[i-1] = ypos[i];
 }
 xpos[xpos.length-1] = newX;
 ypos[ypos.length-1] = newY;
 }

void trail() {
 strokeWeight(2.5);
 beginShape();
 noFill();
 for (int i = 0; i < xpos.length; i ++ ) {
   stroke(255,220);
   if(i%2 == 0){
   curveVertex(xpos[i],ypos[i]);
   //line(xpos[i],ypos[i],xpos[i+1],ypos[i+1]);
 }}
 endShape();
 }
 
void initialise(){
 
}



}