I'm writing a color blending program that will run on my university's multi-touch surface. I first wrote it to run on a computer, with the intention of implementing TUIO later. Currently, it runs perfectly using a mouse, but I'm having some weird problems after implementing TUIO.

In my original program (using the mouse), I've got this code:

1. // Executes if the mouse is over one of the circles
2. if (overCircle){
3.       // If so, gets the color of that circle
4.      c.circleColor = get(mouseX, screen.height-mouseY);
5.      }

The above code will change the color of the object ("c") to whatever color the mouse was over.


Now, I had to change it up a bit when implementing TUIO, but it's essentially the same code:

1. // tcur is the TuioCursor, and the X and Y must be multiplied by the width and height of the screen to get the correct     values
2. float curX = tcur.getX()*wid;
3. float curY = tcur.getY()*hgt;
4. // This for loop checks if the current TUIO cursor is over any of the circles
5. // This functions the same as the above "if (overCircle)" code
6. for (int i = 0; i < circles.size(); i++){
7.        Circle d = (Circle)circles.get(i);
8.       
9.          // If the TUIO cursor was over one of the circles, gets the color of that circle
10.          if (d.isOver(curX, curY)){
11.            c.circleColor = get((int)curX, (int)curY); // These must be cast to int because get() doesn't take float
    
12.            break;
13.          }
14.       
15.      }

Now, the problem I'm running into, is that the second piece of code I posted returns black every time (a really big negative integer, around -16777xx or something like that.)
I've checked, and the X and Y values are correct in the second code (no weird values), so I'm really stumped here.


Sorry if that was unclear at all, I can clarify if needed. Does anyone have any idea of what I should do?