// Draw four blazes of a fan
public void paintComponent(Graphics g) {
super.paintComponent(g);
int xCenter = getSize().width / 2;
int yCenter = getSize().height / 2;
int radius = (int) (Math.min(getSize().width, getSize().height) * 0.4);
int x = xCenter - radius;
int y = yCenter - radius;
g.fillArc(x, y, 2 * radius, 2 * radius, 0, 30);
g.fillArc(x, y, 2 * radius, 2 * radius, 90, 30);
g.fillArc(x, y, 2 * radius, 2 * radius, 180, 30);
g.fillArc(x, y, 2 * radius, 2 * radius, 270, 30);
}
@Override
public void paint(Graphics g) {
System.out.println("Thread invoked the paint() " + Thread.currentThread().getName());
g.setColor(Color.BLACK);
g.setFont(textFont);
g.drawString(timeMessage, 0, 15);
g.fillOval(0, 20, 100, 100);
g.setColor(Color.WHITE);
g.fillOval(3, 23, 94, 94);
g.setColor(Color.BLUE);
g.fillArc(2, 22, 96, 96, 90, -arcLen);
}
/**
* Draws a "solid" arc which will look either like a pie wedge or Pac-man.<br>
* A FILLED ARC is a "piece" of a SOLID OVAL.<br>
* The first 5 parameters (g and 4 ints) are the same as drawOval.<br>
* There are 2 additional parameters for the starting degree value and finishing degree of the
* arc. <br>
* 0 degrees is at the 12:00 position and the degrees progress in a CLOCKWISE fashion. <br>
* (90 degrees is at 3:00, 180 degrees is at 6:00, 270 degrees is at 9:00, 360 degrees is back at
* 12:00).
*/
public static void fillArc(
Graphics g, int centerX, int centerY, int hRadius, int vRadius, int start, int finish) {
int hDiameter = 2 * hRadius;
int vDiameter = 2 * vRadius;
if (finish < start) finish += 360;
int newStart = 90 - start; // shifts starting position from 3:00 to 12:00
int newFinish =
start
- finish; // as oppose to finish-start. Subtracting backwards changes from
// counter-clockwise to clockwise.
g.fillArc(centerX - hRadius, centerY - vRadius, hDiameter, vDiameter, newStart, newFinish);
}
