Java实现图片倒影的源码实例内容

图片倒影是一种常见的效果，在Java中也能够轻松实现。下面是Java实现图片倒影的源码实例内容。

1.导入相关包

使用Java实现图片倒影需要导入以下包：

import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;

2.加载图片

在Java中加载图片可以使用ImageIO类的read()方法：

BufferedImage image = ImageIO.read(new File("path/to/image.jpg"));

3.创建倒影

创建倒影需要先创建一个空的BufferedImage对象，并将原图像复制进去。然后创建一个Graphics2D对象，将图像进行镜像翻转，并将翻转后的图像绘制到空的BufferedImage对象中：

int width = image.getWidth();
int height = image.getHeight();

BufferedImage reflection = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);

Graphics2D g2d = reflection.createGraphics();
g2d.translate(0, height);
g2d.scale(1, -1);
g2d.drawImage(image, 0, 0, null);
g2d.dispose();

4.将倒影拼接到原图上

将倒影拼接到原图上需要先创建一个新的BufferedImage对象，并指定宽度和高度为原图宽度和高度加上倒影高度。然后将原图绘制到新的BufferedImage对象上，并将倒影绘制到原图下方：

int totalHeight = height * 2;

BufferedImage result = new BufferedImage(width, totalHeight, BufferedImage.TYPE_INT_ARGB);

Graphics2D g2d = result.createGraphics();

g2d.drawImage(image, 0, 0, null);
g2d.drawImage(reflection, 0, height, null);

g2d.dispose();

5.保存倒影图片

最后，使用ImageIO类的write()方法将新的BufferedImage对象保存为倒影图片：

ImageIO.write(result, "png", new File("path/to/reflection.png"));

完整的Java源码实例：

import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;

public class ImageReflection {
    public static void main(String[] args) throws Exception {
        BufferedImage image = ImageIO.read(new File("path/to/image.jpg"));
        int width = image.getWidth();
        int height = image.getHeight();
        BufferedImage reflection = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
        Graphics2D g2d = reflection.createGraphics();
        g2d.translate(0, height);
        g2d.scale(1, -1);
        g2d.drawImage(image, 0, 0, null);
        g2d.dispose();
        int totalHeight = height * 2;
        BufferedImage result = new BufferedImage(width, totalHeight, BufferedImage.TYPE_INT_ARGB);
        g2d = result.createGraphics();
        g2d.drawImage(image, 0, 0, null);
        g2d.drawImage(reflection, 0, height, null);
        g2d.dispose();
        ImageIO.write(result, "png", new File("path/to/reflection.png"));
    }
}

执行以上Java程序后，将会在指定的路径下生成倒影图片。以上内容就是Java实现图片倒影的源码实例。