package examples;
public class CharacterGraphics {
char screen[][] = new char[20][20];
public void dot(int x, int y) {
if (x < 0) return;
if (y < 0) return;
if (x >= screen.length) return;
if (y >= screen[0].length) return;
screen[y][x] = '*';
}
public void circle(int xc, int yc, int r) {
for (double t = 0; t < 1; t = t + .01) {
int ix = (int) (t * 20);
double x = t * 2 * Math.PI;
ix = (int) (r * Math.sin(x) + xc);
int iy = (int) (r * Math.cos(x) + yc);
dot(ix, iy);
}
}
public void diag() {
for (int i = 0; i < screen.length; i++)
for (int j = 0; j < screen[i].length; j++)
if (i == j)
screen[i][j] = '*';
}
public void fillScreen(char fillChar) {
for (int i = 0; i < screen.length; i++)
for (int j = 0; j < screen[i].length; j++)
screen[i][j] = fillChar;
}
public void printScreen() {
for (int i = screen.length - 1; i > 0; i--) {
for (int j = 0; j < screen[i].length; j++)
System.out.print(screen[i][j]);
System.out.println();
}
}
public void axis() {
for (int i = 0; i < screen.length; i++)
for (int j = 0; j < screen[i].length; j++) {
if (i == 1)
screen[i][j] = '-';
if (j == 0)
screen[i][j] = '|';
}
screen[1][screen[1].length - 2] = '>';
screen[1][screen[1].length - 1] = 'x';
screen[screen[0].length - 2][0] = '^';
screen[screen[0].length - 1][0] = 'y';
}
public void print(Object a[]) {
for (int i = 0; i < a.length; i++)
System.out.println(a[i]);
}
public static void main(String args[]) {
CharacterGraphics at = new CharacterGraphics();
at.fillScreen('.');
at.axis();
at.circle(5, 5, 5);
at.diag();
at.printScreen();
}
}