JavaFX draw Circle - Java JavaFX

Java examples for JavaFX:Shape

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Description

JavaFX draw Circle

Demo Code


//package com.java2s;
import javafx.geometry.Point2D;
import javafx.scene.image.PixelWriter;
import javafx.scene.paint.Color;

public class Main {
    /**// w  w  w  .j  av  a  2s.co m
     * 
     * @param center
     * @param r
     * @param color
     * @param pw 
     */
    public static void drawCircle(Point2D center, int r, Color color,
            PixelWriter pw) {
        {
            int x = 0, y = r;
            double d = 1.25 - r;
            circlePoints(center, x, y, color, pw);
            while (x <= y) {
                if (d < 0) {
                    d += 2 * x + 3;
                } else {
                    d += 2 * (x - y) + 5;
                    y--;
                }
                x++;
                circlePoints(center, x, y, color, pw);
            }
        }
    }

    static void circlePoints(Point2D center, int x, int y, Color color,
            PixelWriter pw) {
        pw.setColor(x, y, color);
        pw.setColor(y, x, color);
        pw.setColor((int) (center.getX() - x), y, color);
        pw.setColor(y, (int) (center.getX() - x), color);
        pw.setColor(x, (int) (center.getY() - y), color);
        pw.setColor((int) (center.getY() - y), x, color);
        pw.setColor((int) (center.getX() - x), (int) (center.getY() - y),
                color);
        pw.setColor((int) (center.getY() - y), (int) (center.getX() - x),
                color);
    }
}

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