Spiral in Rectangular algorithm, Please help!

Question

I'm trying to spiral around in a rectangle shape (clockwise) but can't seem to get it to work properly with any sized rectangle.
Here is what I have so far...
public class Test {
    private static final int RIGHT = 0;
    private static final int DOWN = 1;
    private static final int LEFT = 2;
    private static final int UP = 3;
    public static void main (String[] args) {
        int x = 100;
        int y = 100;
        int xTol = 3;
        int yTol = 3;       
        boolean searching = true;
        int minX = x - xTol;
        int maxX = x + xTol;
        int curX = x;
        int minY = y - yTol;
        int maxY = y + yTol;
        int curY = y;
        int direction = 0; // 0 = right, 1 = down, 2 = left, 3 = up
        int checks = 1;
        // Initial Compare.
        System.out.println("ini Compare:\tcurX: " + curX + " curY: " + curY);
        int rightFinish = 0;
        int downFinish = 0;
        int leftFinish = 0;
        int upFinish = 0;
        int compCount = 0;
        while (searching) {
            switch (direction) {
                case RIGHT:
                    for (int i = 0; i != checks; ++i) {
                        ++curX;
                        System.out.println("RIGHT Compare:\tcurX: " + curX + " curY: " + curY);
                    direction++;
                    rightFinish = curX;
                    break;
                case DOWN:
                    for (int i = 0; i != checks; ++i) {
                        ++curY;
                        System.out.println("DOWN Compare:\tcurX: " + curX + " curY: " + curY);
                    direction++;
                    downFinish = curY;
                    break;
                case LEFT:
                    for (int i = 0; i != checks; ++i) {
                        --curX;
                        System.out.println("LEFT Compare:\tcurX: " + curX + " curY: " + curY);
                    direction++;
                    leftFinish = curX;
                    break;
                case UP:
                    for (int i = 0; i != checks; ++i) {
                        --curY;
                        System.out.println("UP Compare:\tcurX: " + curX + " curY: " + curY);
                    direction = 0;
                    upFinish = curY;
                    break;
            if (++compCount >= 2) {
                compCount = 0;
                ++checks;
            if (rightFinish == maxX && downFinish == maxY && leftFinish == minX && upFinish == minY) {
                System.out.println(direction);
                break;
}The above code almost accomplishes what I want but not quite.
Ultimately i want to create a "rectangle" out of dots by specifying a maxX, maxY, minX and minY in clockwise form.
IE the output would be something like:
ini Compare:     curX: 100 curY: 100
RIGHT Compare:     curX: 101 curY: 100
DOWN Compare:     curX: 101 curY: 101
LEFT Compare:     curX: 100 curY: 101
LEFT Compare:     curX: 99 curY: 101
UP Compare:     curX: 99 curY: 100
UP Compare:     curX: 99 curY: 99
RIGHT Compare:     curX: 100 curY: 99
RIGHT Compare:     curX: 101 curY: 99
RIGHT Compare:     curX: 102 curY: 99
DOWN Compare:     curX: 102 curY: 100
DOWN Compare:     curX: 102 curY: 101
DOWN Compare:     curX: 102 curY: 102
LEFT Compare:     curX: 101 curY: 102
LEFT Compare:     curX: 100 curY: 102
... and so on until complete. The above code almost makes a square but would not work for rectangle.

Answer 1

Jardium wrote:
OK, but you thought about the algorithm, corrected little errors within it, etc. without viewing the points on the screen?
How can you be sure that the points which are generated by your program really make up a spiral? Just by reading them?As in my original post the output of the code I write is:
ini Compare: curX: 100 curY: 100
RIGHT Compare: curX: 101 curY: 100
DOWN Compare: curX: 101 curY: 101
LEFT Compare: curX: 100 curY: 101
LEFT Compare: curX: 99 curY: 101
UP Compare: curX: 99 curY: 100
UP Compare: curX: 99 curY: 99
RIGHT Compare: curX: 100 curY: 99
RIGHT Compare: curX: 101 curY: 99
RIGHT Compare: curX: 102 curY: 99
DOWN Compare: curX: 102 curY: 100
DOWN Compare: curX: 102 curY: 101
DOWN Compare: curX: 102 curY: 102
LEFT Compare: curX: 101 curY: 102
LEFT Compare: curX: 100 curY: 102
That is spiroling around...
But would not complete correctly if the width and height are not the same.
Please only post if you have a valid question or are willing to help out.
Thanks,