processCentroids.h

                                temp = calculateCentroids(wVCentroid, wVCentroidSize, MAX_NUM_CENTROIDS, FIRST_SENSOR_V, LAST_SENSOR_V, numSensors); // Vertical centroids
                                firstActiveSensor = temp & 0xFF;
                                lastActiveSensor = temp >> 8;
                                bActivityDetected = lastActiveSensor >= 0;
 
                                temp = lastActiveSensor - (LAST_SENSOR_V - FIRST_SENSOR_V );// retrieve the (wrapped) index
                                //check for activity in the wraparound area
                                // IF the last centroid ended after wrapping around ...
                                // AND the first centroid was located before the end of the last ...
                                if(lastActiveSensor >= LAST_SENSOR_V - FIRST_SENSOR_V
                                        && (((BYTE)temp) << SLIDER_BITS) >= wVCentroid[0] )
                                {
                                        // THEN the last touch is used to replace the first one
                                        for(counter = MAX_NUM_CENTROIDS - 1; counter >= 1; counter--) {
                                                if(0xFFFF == wVCentroid[counter])
                                                        continue;
                                                // replace the first centroid
                                                wVCentroidSize[0] = wVCentroidSize[counter];
                                                wVCentroid[0] = wVCentroid[counter];
                                                // wrap around the position if needed
                                                if(wVCentroid[0] >= posEndOfLoop)
                                                        wVCentroid[0] -= posEndOfLoop;
                                                // discard the last centroid
                                                wVCentroid[counter] = 0xFFFF;
                                                wVCentroidSize[counter] = 0x0;
                                                break;
                                        }
                                }