用java如何实现对图片旋转？

xchang 2006-07-12 03:20:14

谢谢先~~~~~~~~~~~~~~~~~

graphics2d rotate?????????
给个例子说明一下

...全文

1264 7 打赏收藏转发到动态举报

写回复

用AI写文章

7 条回复

切换为时间正序

请发表友善的回复…

发表回复

xchang 2006-07-13

打赏
举报

谢谢~~~~~~~~~舞者~~~~~~~~~~
看来还要仔细研究jdk

infowain 2006-07-13

打赏
举报

把文件读出来，编码后再保存，编码的方法可以参考
http://ijsp.net/2/2003-3/25/0000353.shtml

pdvv 2006-07-13

打赏
举报

http://topic.csdn.net/t/20000901/11/27883.html

chenweionline 2006-07-13

打赏
举报

public static final int J2D_ROTATE_90 = 90;
public static final int J2D_ROTATE_180 = 180;
public static final int J2D_ROTATE_270 = 270;
/**
* 旋转 - 参数指定目标图旋转角度。
* @param bufferedImage BufferedImage
* @param radian int
* @param hints RenderingHints
* @return BufferedImage
*/
public static BufferedImage rotateJ2D(BufferedImage bufferedImage,
int radian,
RenderingHints hints) {
int width = bufferedImage.getWidth();
int height = bufferedImage.getHeight();

BufferedImage dstImage = null;
AffineTransform affineTransform = new AffineTransform();

if (radian == 180) {
affineTransform.translate(width, height);
dstImage = new BufferedImage(width, height, bufferedImage.getType());
} else if (radian == 90) {
affineTransform.translate(height, 0);
dstImage = new BufferedImage(height, width, bufferedImage.getType());
} else if (radian == 270) {
affineTransform.translate(0, width);
dstImage = new BufferedImage(height, width, bufferedImage.getType());
}

affineTransform.rotate(java.lang.Math.toRadians(radian));
AffineTransformOp affineTransformOp = new AffineTransformOp(
affineTransform,
hints);

return affineTransformOp.filter(bufferedImage, dstImage);
}

xchang 2006-07-13