refresh JavaFX Canvas - Java JavaFX

Java examples for JavaFX:Canvas

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Description

refresh JavaFX Canvas

Demo Code

/*******************************************************************************
 * Copyright (c) 2015-2016 Oak Ridge National Laboratory.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/
//package com.java2s;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import javafx.geometry.Bounds;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;

public class Main {
    private static final int ITEMS = 10000;

    public static void refresh(final Canvas canvas) {
        final GraphicsContext gc = canvas.getGraphicsContext2D();

        final Bounds bounds = canvas.getBoundsInLocal();
        final double width = bounds.getWidth();
        final double height = bounds.getHeight();

        gc.clearRect(0, 0, width, height);
        gc.strokeRect(0, 0, width, height);

        for (int i = 0; i < ITEMS; ++i) {
            gc.setFill(Color.hsb(Math.random() * 360.0, Math.random(),
                    Math.random()));
            final double size = 5 + Math.random() * 40;
            final double x = Math.random() * (width - size);
            final double y = Math.random() * (height - size);
            gc.fillOval(x, y, size, size);
        }/*from  w w w. j  a v  a 2s .  c  om*/
    }

    public static void refresh(final BufferedImage buf) {
        Graphics2D gc = buf.createGraphics();
        final int width = buf.getWidth();
        final int height = buf.getHeight();

        gc.clearRect(0, 0, width, height);
        gc.drawRect(0, 0, width, height);

        for (int i = 0; i < ITEMS; ++i) {
            gc.setColor(java.awt.Color.getHSBColor((float) Math.random(),
                    (float) Math.random(), (float) Math.random()));
            final int size = (int) (5 + Math.random() * 40);
            final int x = (int) (Math.random() * (width - size));
            final int y = (int) (Math.random() * (height - size));
            gc.fillOval(x, y, size, size);
        }
    }
}

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