/**
* This function randomly picks a point along the x-axis and y-axis then draws a line across it
*
* @param BL bottom-left
* @param TR top-right
* @param HL # of horizontal lines
* @param VL # of vertical lines
*/
public ArrayList Draw_Random_Lines(Point BL, Point TR, int HL, int VL) {
int min_x = BL.x; // parse the Points
int min_y = BL.y;
int max_x = TR.x;
int max_y = TR.y;
int x, y;
Random rd = new Random();
/*
* The purpose of the algorithm is to prevent any odd number integers to be randomized
* By dividing the random number by 2 and flooring it will force the random number to be an even integer
* Then multiplying it by 2 will bring it back to its original value or +/-1 if the number was odd to begin with
* This will make error checking a lot easier because we can take out any duplicate numbers that are being generated
* Also not needing to worry about lines being generated right next to each other
*/
for (int i = 0; i < HL; i++) { // draw horizontal lines
y =
(int) Math.floor((double) (rd.nextInt(max_y - min_y) + min_y) / 3)
* 3; // pick a point on the y-axis to draw the horizontal line
if (HL_list.contains(y)
|| y < min_y + 2
|| y > max_y - 2) // check to see if the y-axis generated is already in the list
i--;
else {
HL_list.add(y);
LineObject LO = new LineObject(BL.x, y, TR.x, y);
line_list.add(LO); // put into array to check for errors
// drawLine(BL.x,y,TR.x,y);
}
}
for (int j = 0; j < VL; j++) { // draw vertical lines
x =
(int) Math.floor((double) (rd.nextInt(max_x - min_x) + min_x) / 3)
* 3; // pick a point on the x-axis to draw the vertical line
if (VL_list.contains(x) || x < min_x + 2 || x > max_x - 2) j--;
else {
VL_list.add(x);
LineObject LO = new LineObject(x, BL.y, x, TR.y);
line_list.add(LO);
// drawLine(x,BL.y,x,TR.y);
}
}
return line_list;
}
private int getCurrentPageFloor() {
return (int) Math.floor(mFlipDistance / FLIP_DISTANCE_PER_PAGE);
}