在 Java 中创建动画

Java 2周前 13

Java Swing 库中的 JFrame 类可用于在 Java 中创建不同的图形和动画。直到 JDK 8 小程序用来创建动画，但后来被删除了，加入了 JAVA swing。

本教程将讨论和演示使用 Java 创建动画。

在 Java 中使用 JFrame 类创建动画

使用 JFrame，我们可以决定动画的颜色、形状和时间。让我们创建一个包含三部分但六种颜色的二维旋转饼图。

package delftstack;
import java.awt.Graphics;
import java.awt.Color;
import java.util.Timer;
import java.awt.Insets;
import java.util.TimerTask;
import javax.swing.JFrame;
public class Animation extends JFrame {
    private static int DELAY = 500; //The speed on which the animation will run
    Insets animate_insets;
    Color colors[] = { Color.PINK, Color.GREEN, Color.ORANGE, Color.BLACK,
        Color.WHITE, Color.MAGENTA };
    public void paint(Graphics demo) {
        super.paint(demo);
        if (animate_insets == null) {
            animate_insets = getInsets();
        }
        int a = animate_insets.left;
        int b = animate_insets.top;
        int animation_width = getWidth() - animate_insets.left - animate_insets.right;
        int animation_height = getHeight() - animate_insets.top - animate_insets.bottom;
        int animation_start = 0;
        int animation_steps = colors.length;
        int animation_stepSize = 720 / animation_steps;
        synchronized (colors) {
        for (int i = 0; i < animation_steps; i++) {
            demo.setColor(colors[i]);
            demo.fillArc(a, b, animation_width, animation_height, animation_start, animation_stepSize);
            animation_start += animation_stepSize;
        }
        }
    }
    public void go() {
        TimerTask animation_task = new TimerTask() {
        public void run() {
            Color animation_color = colors[0];
            synchronized (colors) {
            System.arraycopy(colors, 1, colors, 0, colors.length - 1);
            colors[colors.length - 1] = animation_color;
            }
        repaint();
        }
        };
        Timer animation_timer = new Timer();
        animation_timer.schedule(animation_task, 0, DELAY);
    }
    public static void main(String args[]) {
        Animation Demo_Animation = new Animation();
        Demo_Animation.setSize(400, 400);
        Demo_Animation.show();
        Demo_Animation.go();
    }
}