Java中只有中心点和半径的高度包围盒算法
我正在尝试使用fillOval命令在Java中创建一个圆。用户输入圆的中心坐标和半径,但我不知道如何找到圆角命令的高度和宽度
import java.util.*;
import java.awt.*;
public class Circles {
public static final Scanner Console = new Scanner(System.in);
public static void main(String args[]) {
DrawingPanel panel = new DrawingPanel(400,300);
Graphics g = panel.getGraphics();
//print the beginning statement of the main method
System.out.println("");
//ask the user for the center and radius for the first circle
System.out.println("Enter the x-value for the center of the first circle: ");
double x1 = Console.nextDouble();
System.out.println("Enter the y-value for the center of the first circle: ");
double y1 = Console.nextDouble();
System.out.println("Enter the radius for the first circle: ");
double rad1 = Console.nextDouble();
//calculate the height and width of the first circle
//ask the user for the center and radius for the second circle
System.out.println("Enter the x-value for the center of the second circle: ");
double x2 = Console.nextDouble();
System.out.println("Enter the y-value for the center of the second circle: ");
double y2 = Console.nextDouble();
System.out.println("Enter the radius for the second circle: ");
double rad2 = Console.nextDouble();
//calculate the height and width of the second circle
//ask the user for the center and radius for the third circle
System.out.println("Enter the x-value for the center of the third circle: ");
double x3 = Console.nextDouble();
System.out.println("Enter the y-value for the center of the third circle: ");
double y3 = Console.nextDouble();
System.out.println("Enter the radius for the third circle: ");
double rad3 = Console.nextDouble();
//calculate the height and width of the third circle
//use the fillOval method to draw each circle
//fillOval(int x, int y, int width, int height)
到目前为止,我只有这些。我只是不知道如何获得高度和宽度
# 1 楼答案
也许这个简单的小方法会帮你一点忙
将drawOval()替换为fillOval()