/**
* 圖片拼接
* @param files 要拼接的文件列表
* @param type 1 橫向拼接, 2 縱向拼接
* @return
*/
public static InputStream merge(String[] files, int type) {
int len = files.length;
if (len < 1) {
log.info("圖片數量小於1");
return null;
}
File[] src = new File[len];
BufferedImage[] images = new BufferedImage[len];
int[][] ImageArrays = new int[len][];
for (int i = 0; i < len; i++) {
try {
src[i] = new File(files[i]);
images[i] = ImageIO.read(src[i]);
} catch (Exception e) {
e.printStackTrace();
return null;
}
int width = images[i].getWidth();
int height = images[i].getHeight();
ImageArrays[i] = new int[width * height];// 從圖片中讀取RGB
ImageArrays[i] = images[i].getRGB(0, 0, width, height, ImageArrays[i], 0, width);
}
int newHeight = 0;
int newWidth = 0;
for (int i = 0; i < images.length; i++) {
//橫向
if(type == 1){
newHeight = newHeight > images[i].getHeight() ? newHeight : images[i].getHeight();
newWidth += images[i].getWidth();
}else if(type == 2){//縱向
newWidth = newWidth > images[i].getWidth() ? newWidth : images[i].getWidth();
newHeight += images[i].getHeight();
}
}
log.info("拼接後圖像寬度:"+newWidth);
log.info("拼接後圖像高度:"+newHeight);
if (type == 1 && newWidth < 1) {
log.info("拼接後圖像寬度小於1");
return null;
}
if (type == 2 && newHeight < 1) {
log.info("拼接後圖像高度小於1");
return null;
}
//生成新圖片
try {
BufferedImage ImageNew = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_RGB);
int height_i = 0;
int width_i = 0;
for (int i = 0; i < images.length; i++) {
if(type == 1){
ImageNew.setRGB(width_i, 0, images[i].getWidth(), newHeight, ImageArrays[i], 0, images[i].getWidth());
width_i += images[i].getWidth();
}else if(type == 2){
ImageNew.setRGB(0, height_i, newWidth, images[i].getHeight(), ImageArrays[i], 0, newWidth);
height_i += images[i].getHeight();
}
}
// File outFile = new File("d://123.jpg");
// ImageIO.write(ImageNew, "jpg", outFile);// 寫圖片
ByteArrayOutputStream out = new ByteArrayOutputStream();
ImageIO.write(ImageNew, "jpg", out);// 圖片寫入到輸出流中
ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
return in;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}