Java-将缓冲图像保存到旋转90度的文件时出现问题

Question

我一直在尝试完成一个将Color[][]保存到jpg图像文件的方法，但解决方案会导致输出文件旋转90度，我尝试过寻找问题，但对我来说并不明显，而且其他有类似解决方案的人似乎也没有同样的问题。

非常感谢您的帮助！

private Color[][] image;  //  assume this field has already been populated
public  void saveImage() {
BufferedImage saveImage = new BufferedImage(this.image.length, 
this.image[0].length, 
BufferedImage.TYPE_INT_RGB);
for (int row = 0; row < this.image.length; row++) {
for (int col = 0; col < this.image[row].length; col++) {
saveImage.setRGB(row, col, this.image[row][col].getRGB());
}
}
String fName = UIFileChooser.save();
if (fName==null){return;}
File toFile = new File(fName+".jpg");
try {
ImageIO.write(saveImage,"jpg", toFile);
}catch (IOException e){UI.println("File save error: "+e);}
}

谢谢你的帮助，原来我只需要翻转尺寸和x/y坐标，下面是固定版本：

private Color[][] image;  //  assume this field has already been populated
public  void saveImage() {
BufferedImage saveImage = new BufferedImage(this.image[0].length, 
this.image.length, 
BufferedImage.TYPE_INT_RGB);
for (int row = 0; row < this.image.length; row++) {
for (int col = 0; col < this.image[row].length; col++) {
saveImage.setRGB(col, row, this.image[row][col].getRGB());
}
}
String fName = UIFileChooser.save();
if (fName==null){return;}
File toFile = new File(fName+".jpg");
try {
ImageIO.write(saveImage,"jpg", toFile);
}catch (IOException e){UI.println("File save error: "+e);}
}

Answer 1

BufferedImage.setRGB方法的签名是public void setRGB​(int x, int y, int rgb)

X先到，然后Y。row等于y，col等于x。

因此，将该行更改为：

saveImage.setRGB(col, row, this.image[row][col].getRGB());