bool Roi::pinit(Roi R, float percent)
{
float t = 2*percent/100*R.height(); // twice the percent is the total range of the random number
int max_twice_offset = (int) t; // truncate
int ulxoffset = rand()%max_twice_offset - t/2; // allow both positive and negative offsets
int ulyoffset = rand()%max_twice_offset - t/2; // allow both positive and negative offsets
int lrxoffset = rand()%max_twice_offset - t/2; // allow both positive and negative offsets
int lryoffset = rand()%max_twice_offset - t/2; // allow both positive and negative offsets
upperLeftX = R.startX() + ulxoffset;
upperLeftY = R.startY() + ulyoffset;
lowerRightX = R.endX() + lrxoffset;
lowerRightY = R.endY() + lryoffset;
roiValue = R.label();
randomlyGenerated = true;
return(true);
}
int Roi::overlapArea(Roi checkRoi){
int overlap = 0;
// Calulate the intersection of the two roi
overlap = max(0,min(lowerRightX, checkRoi.endX())-max(upperLeftX,checkRoi.startX())) * max(0,min(lowerRightY, checkRoi.endY())-max(upperLeftY,checkRoi.startY()));
//overlap = max(0,min(upperLeftX, checkRoi.startX())-max(lowerRightX,checkRoi.endX())) * max(0,min(upperLeftY, checkRoi.startY())-max(lowerRightY,checkRoi.endY()));
return overlap;
}