java实现图片水平和垂直翻转效果
这篇文章主要为大家详细介绍了java实现图片水平和垂直翻转效果，图片旋转的灵活运用，具有一定的参考价值，感兴趣的小伙伴们可以参考一下最近在做小型游戏，遇到了要翻转图片的苦恼，经过我一下午的研究，终于发现了一种好用的方法。
部分代码来源于别人，我在这个基础上修改了下，变得更好用了，之前的别人image输入都是bufferedimage，我改成了image，也就是加了一个转换。
大家如果看不懂代码没关系，会用就行了，我会展示一下怎么用的。
imagerotate类
package mypackage;
import javax.imageio.imageio;
import java.awt.*;
import java.awt.image.bufferedimage;
import java.io.file;
/**
* author mythos_q
*
* time 2011-07-20
*
* description 图片旋转、翻转处理
*/
public class imgrotate
{
static int up_down_reverse = 0;
static int left_right_reverse = 1;
/**
* 旋转图片为指定角度
*
* @param bufferedimage
* 目标图像
* @param degree
* 旋转角度
* @return
*/
public static bufferedimage rotateimage(final bufferedimage bufferedimage,final int degree){
int w = bufferedimage.getwidth();
int h = bufferedimage.getheight();
int type = bufferedimage.getcolormodel().gettransparency();
bufferedimage img;
graphics2d graphics2d;
(graphics2d = (img = new bufferedimage(h, w, type)).creategraphics()).setrenderinghint(renderinghints.key_interpolation,renderinghints.value_interpolation_bilinear);
graphics2d.rotate(math.toradians(degree), w / 2, h / 2 + (w>h?(w-h)/2:(h-w)/2));
graphics2d.drawimage(bufferedimage, 0, 0, null);
graphics2d.dispose();
return img;
}
/**
* 旋转图片为指定角度
*
* @param file
* 目标图像
* @param degree
* 旋转角度(90,180,270)
* @return
*/
public static file rotateimage(file file,int degree) throws exception{
if(degree==90) return rotateimage90(file);
if(degree==180) return rotateimage180(file);
if(degree==270) return rotateimage270(file);
return null;
}
public static image rotateimage(image image,int degree)
{
if(degree==90)
return rotateimage90(image);
if(degree==180)
return rotateimage180(image);
if(degree==270)
return rotateimage270(image);
return null;
}
private static image rotateimage90(image image)
{
bufferedimage bufferedimage = imagetobufferedimage(image);
int w = bufferedimage.getwidth();
int h = bufferedimage.getheight();
int type = bufferedimage.getcolormodel().gettransparency();
bufferedimage img;
graphics2d graphics2d;
(graphics2d =
(img = new bufferedimage(h, w, type) ).creategraphics()
).setrenderinghint(renderinghints.key_interpolation,renderinghints.value_interpolation_bilinear);
graphics2d.rotate(math.toradians(270), w / 2, h / 2 + (w-h)/2);
graphics2d.drawimage(bufferedimage, 0, 0, null);
graphics2d.dispose();
return bufferedimagetoimage(img);
}
//左转90度
public static file rotateimage90(file file) throws exception
{
bufferedimage bufferedimage = imageio.read(file);
int w = bufferedimage.getwidth();
int h = bufferedimage.getheight();
int type = bufferedimage.getcolormodel().gettransparency();
bufferedimage img;
graphics2d graphics2d;
(graphics2d =
(img = new bufferedimage(h, w, type) ).creategraphics()
).setrenderinghint(renderinghints.key_interpolation,renderinghints.value_interpolation_bilinear);
graphics2d.rotate(math.toradians(270), w / 2, h / 2 + (w-h)/2);
graphics2d.drawimage(bufferedimage, 0, 0, null);
graphics2d.dispose();
imageio.write(img,"jpg",file);
return file;
}
//右转90度
public static file rotateimage270(file file) throws exception
{
bufferedimage bufferedimage = imageio.read(file);
int w = bufferedimage.getwidth();
int h = bufferedimage.getheight();
int type = bufferedimage.getcolormodel().gettransparency();
bufferedimage img;
graphics2d graphics2d;
(graphics2d = (img = new bufferedimage(h, w, type)).creategraphics()).setrenderinghint(renderinghints.key_interpolation,renderinghints.value_interpolation_bilinear);
graphics2d.rotate(math.toradians(90), w / 2 - (w-h)/2, h / 2 );
graphics2d.drawimage(bufferedimage, 0, 0, null);
graphics2d.dispose();
imageio.write(img,"jpg",file);
return file;
}
public static image rotateimage270(image image)
{
bufferedimage bufferedimage = imagetobufferedimage(image);
int w = bufferedimage.getwidth();
int h = bufferedimage.getheight();
int type = bufferedimage.getcolormodel().gettransparency();
bufferedimage img;
graphics2d graphics2d;
(graphics2d = (img = new bufferedimage(h, w, type)).creategraphics()).setrenderinghint(renderinghints.key_interpolation,renderinghints.value_interpolation_bilinear);
graphics2d.rotate(math.toradians(90), w / 2 - (w-h)/2, h / 2 );
graphics2d.drawimage(bufferedimage, 0, 0, null);
graphics2d.dispose();
return bufferedimagetoimage(img);
}
//对转
public static file rotateimage180(file file) throws exception
{
bufferedimage bufferedimage = imageio.read(file);
int w = bufferedimage.getwidth();
int h = bufferedimage.getheight();
int type = bufferedimage.getcolormodel().gettransparency();
bufferedimage img;
graphics2d graphics2d;
(graphics2d = (img = new bufferedimage(w, h, type)).creategraphics()).setrenderinghint(renderinghints.key_interpolation,renderinghints.value_interpolation_bilinear);
graphics2d.rotate(math.toradians(180), w / 2, h / 2 );
graphics2d.drawimage(bufferedimage, 0, 0, null);
graphics2d.dispose();
imageio.write(img,"jpg",file);
return file;
}
public static image rotateimage180(image image)
{
bufferedimage bufferedimage = imagetobufferedimage(image);
int w = bufferedimage.getwidth();
int h = bufferedimage.getheight();
int type = bufferedimage.getcolormodel().gettransparency();
bufferedimage img;
graphics2d graphics2d;
(graphics2d = (img = new bufferedimage(w, h, type)).creategraphics()).setrenderinghint(renderinghints.key_interpolation,renderinghints.value_interpolation_bilinear);
graphics2d.rotate(math.toradians(180), w / 2, h / 2 );
graphics2d.drawimage(bufferedimage, 0, 0, null);
graphics2d.dispose();
return bufferedimagetoimage(img);
}
/***
* 图片镜像处理
* @param file
* @param fx 0 为上下反转 1 为左右反转
* @return
*/
public static void imagemisro(file file,int fx)
{
try
{
bufferedimage bufferedimage = imageio.read(file);
int w = bufferedimage.getwidth();
int h = bufferedimage.getheight();
int[][] datas = new int;
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
datas = bufferedimage.getrgb(j, i);
}
}
int[][] tmps = new int;
if (fx == 0) {
for (int i = 0, a = h - 1; i < h; i++, a--) {
for (int j = 0; j < w; j++) {
tmps = datas;
}
}
} else if (fx == 1) {
for (int i = 0; i < h; i++) {
for (int j = 0, b = w - 1; j < w; j++, b--) {
tmps = datas;
}
}
}
for (int i = 0; i < h; i++){
for (int j = 0; j<w ;j++){
bufferedimage.setrgb(j, i, tmps);
}
}
imageio.write(bufferedimage, "jpg", file);
} catch (exception e) {
e.printstacktrace();
}
}
/*
*
* 镜像处理，输入image和方式，返回翻转的新image
* type = 0 表示上下翻转，type = 1 表示左右翻转
*/
public static image imagemisro(image image,int type )
{
try
{
//用到了自己写的方法
bufferedimage bufferedimage = imagetobufferedimage(image);
int w = bufferedimage.getwidth();
int h = bufferedimage.getheight();
int[][] datas = new int;
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
datas = bufferedimage.getrgb(j, i);
}
}
int[][] tmps = new int;
if (type == 0) {
for (int i = 0, a = h - 1; i < h; i++, a--) {
for (int j = 0; j < w; j++) {
tmps = datas;
}
}
} else if (type == 1) {
for (int i = 0; i < h; i++) {
for (int j = 0, b = w - 1; j < w; j++, b--) {
tmps = datas;
}
}
}
for (int i = 0; i < h; i++){
for (int j = 0; j<w ;j++){
bufferedimage.setrgb(j, i, tmps);
}
}
image newimage = (image)bufferedimage;
return newimage;
//imageio.write(bufferedimage, "jpg", file);
} catch (exception e) {
e.printstacktrace();
}
return null;
}
//image转换成bufferedimage
public static bufferedimage imagetobufferedimage( image image )
{
bufferedimage bufferedimage = new bufferedimage
(image.getwidth(null), image.getheight(null),bufferedimage.type_int_rgb);
graphics g = bufferedimage.creategraphics();
g.drawimage(image, 0, 0, null); //这里，大家可能会有疑问，似乎没有对bufferedimage干啥
g.dispose();//但是是正确的，g调用drawimage就自动保存了
return bufferedimage;
}
//bufferedimage 转换成image类型
public static image bufferedimagetoimage( bufferedimage b )
{
return (image)b;
}
}
下面展示用法：
package mypackage;
import java.awt.*;
import java.awt.image.*;
import java.net.url;
import javax.swing.*;
public class test extends jpanel
{
jframe frame;
image image = new imageicon("hand2.jpg").getimage();
public void paint( graphics g )
{
g.drawimage(image, 0, 0,null); //之前的图片
image m = imgrotate.imagemisro(image, imgrotate.left_right_reverse);
g.drawimage(m, 200, 200, null); //水平翻转的图片
image mm = imgrotate.rotateimage(m, 90); //这里只能填90,180,270
g.drawimage(mm, 250, 0, null);
}
public test()
{
frame = new jframe();
frame.add(this);
frame.setsize(500,500);
frame.setlocationrelativeto(null);
frame.setdefaultcloseoperation(jframe.exit_on_close);
frame.setvisible(true);
}
public static void main(string[] args)
{
new test();
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持CodeAE代码之家。
原文链接：https://blog.csdn.net/qq_39627843/article/details/86497370
http://www.zzvips.com/article/175762.html
页:
[1]