hi,

im writing code to check if objects have been placed on a surface that a camera is mounted underneath. i need to method that returns a value if the colour has been found.

i wrote some code, using an example from Daniel Shiffmans book and have edited it to return a boolean if the the color that has been passed to the function if found or not found. i need a return type to use this function as part of other functions.

import processing.video.*;

Capture video;
color colToFind;

boolean findColor(color t) {
 colToFind = t;
 float closestCol = 500;
 int closestX = 0;
 int closestY = 0;
 for(int x = 0; x < video.width; x++) {
   for (int y = 0; y < video.height; y++) {
     int loc = x + y*video.width;
     color currentColor = video.pixels[loc];
     float r1 = red(currentColor);
     float g1 = green(currentColor);
     float b1 = blue(currentColor);
     float r2 = red(colToFind);
     float g2 = green(colToFind);
     float b2 = blue(colToFind);
     float d = dist(r1,g1,b1,r2,g2,b2);
     
     if(d < closestCol) {
       closestCol = d;
       closestX = x;
       closestY = y;
     }
   }
 }
 if (closestCol < 10) {
   return true;
 }else{
   return false;
 }
}


i had also experimented with jmyrons trackColor but i dont think has a return type. it just simple tracks that given color. im trying to think of a way to implement this function as it may make it easier.

when i try to run the above code gives an error unexpected token: boolean. if i change this to a void and take out the last bit of code, the if statement then it works fine.

does anyone know where im going wrong or have any suggestions of a better way to do this?

thanks in advance!