项目源码
新增资源文件
新增Image图像处理类
新增sprite包,里面新增Image.java类
package sprite;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOException;
public class Image {
private BufferedImage _img;
private int _width;
private int _height;
public Image(String path){
try {
_img = ImageIO.read(getClass().getClassLoader().getResourceAsStream(path));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
_width = _img.getWidth(null);
_height = _img.getHeight(null);
_img = makeTransparent(_img);
}
private BufferedImage makeTransparent(BufferedImage tmpImage)
{
int h=tmpImage.getHeight(null);
int w=tmpImage.getWidth(null);
BufferedImage resultImage=new BufferedImage(w,h,BufferedImage.TYPE_INT_ARGB);
// assume the upperleft corner of the original image is a transparent pixel
Color trans = new Color(255,0,255);
Color transOther = new Color(252,0,255);
int transparentColor=trans.getRGB();
int transparentColorOther=transOther.getRGB();
for (int y=0;y<h;y++)
for (int x=0;x<w;x++)
{
int color=tmpImage.getRGB(x,y);
if (color==transparentColor) color=color & 0x00FFFFFF; // clear the alpha flag
else if(color==transparentColorOther) color=color & 0x00FFFFFF;
resultImage.setRGB(x,y,color);
}
return resultImage;
}
public BufferedImage getImage(){
return _img;
}
}
图片的透明处理
makeTransparent方法:
遍历图像的每一个像素,通过以下代码清除图片中颜色为上图的2种粉色(我们的资源有2种粉色)
color=color & 0x00FFFFFF;
这样处理之后,原图
就变成了透明的。