draw Resistance Circle - Java java.awt

Java examples for java.awt:Graphics2D

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Description

draw Resistance Circle

Demo Code


//package com.java2s;
import java.awt.Color;
import java.awt.Graphics;

public class Main {

    public static void drawResistanceCircle(Graphics g, int x, int y) {
        g.setColor(Color.RED);/*ww  w  .j  av  a 2 s.c  o  m*/
        int r = (int) ((double) x * x + y * y - 800 * x - 400 * y + 200000)
                / (800 - 2 * x);
        int tmp_x = 400 - r;
        int tmp_y = 200;
        drawCircleThroughCenter(g, tmp_x, tmp_y, r);
    }

    public static void drawCircleThroughCenter(Graphics g, int x, int y,
            int r) {
        int tmp_x = x - r;
        int tmp_y = y - r;
        int tmp_width = 2 * r;
        int tmp_height = 2 * r;
        g.drawOval(tmp_x, tmp_y, tmp_width, tmp_height);
    }
}

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