public void drawFunctionToGraphic(Graphics2D g, int x, int y, int UNITYX, int UNITYY) {
int _x, _y;
g.setColor(Color.red);
g.drawString("f(x) = " + F.toString(), 15, 20);
g.setColor(Color.blue);
for (double i = 0; ; i += EPSILON) {
_x = (int) (i * UNITYX) + x / 2;
_y = -(int) (F.evaluate(i) * UNITYY) + y / 2;
g.drawLine(
_x,
_y,
(int) ((i + EPSILON) * UNITYX) + x / 2,
-(int) (F.evaluate(i + EPSILON) * UNITYY) + y / 2);
if (_x < 0 || _x > x || _y < 0 || _y > y) break;
}
for (double i = 0; ; i -= EPSILON) {
_x = (int) (i * UNITYX) + x / 2;
_y = -(int) (F.evaluate(i) * UNITYY) + y / 2;
g.drawLine(
_x,
_y,
(int) ((i + EPSILON) * UNITYX) + x / 2,
-(int) (F.evaluate(i + EPSILON) * UNITYY) + y / 2);
if (_x < 0 || _x > x || _y < 0 || _y > y) break;
}
}
public double evaluate(double value) {
return F.evaluate(value);
}