draw Reflection Coefficient Circle - Java java.awt

Java examples for java.awt:Graphics2D

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Description

draw Reflection Coefficient Circle

Demo Code


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

public class Main {

    public static void drawReflectionCoefficientCircle(Graphics g, int x,
            int y) {
        g.setColor(Color.GREEN);//from   ww w  . ja  v  a2s .co m
        int r = (int) Math.sqrt((double) (x - 200) * (x - 200) + (y - 200)
                * (y - 200));
        drawCircleThroughCenter(g, 200, 200, r);
        g.drawLine(x, y, 200, 200);
    }

    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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