package com.dy.common.util;
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import javax.imageio.ImageIO;
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import javax.swing.*;
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import java.awt.*;
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import java.awt.image.BufferedImage;
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import java.io.FileInputStream;
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import java.io.IOException;
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/**
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* 图片转化Ascii
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*/
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public class AsciiPic {
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/**
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* 将image转换成 BufferedImage
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*
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*/
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public static BufferedImage toBufferedImage(Image image) {
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if (image instanceof BufferedImage) {
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return (BufferedImage)image;
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}
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// 加载所有像素
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image = new ImageIcon(image).getImage();
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BufferedImage bImage = null;
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GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
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try {
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int transparency = Transparency.OPAQUE;
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// 创建buffer图像
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GraphicsDevice gs = ge.getDefaultScreenDevice();
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GraphicsConfiguration gc = gs.getDefaultConfiguration();
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bImage = gc.createCompatibleImage(image.getWidth(null), image.getHeight(null), transparency);
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} catch (HeadlessException e) {
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e.printStackTrace();
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}
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if (bImage == null) {
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int type = BufferedImage.TYPE_INT_RGB;
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bImage = new BufferedImage(image.getWidth(null), image.getHeight(null), type);
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}
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// 复制
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Graphics g = bImage.createGraphics();
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// 赋值
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g.drawImage(image, 0, 0, null);
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g.dispose();
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return bImage;
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}
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public static Image creatImage(String ImgPath) {
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Image srcImg = null;
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try {
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srcImg = ImageIO.read(new FileInputStream(ImgPath));
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} catch (Exception e1) {
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e1.printStackTrace();
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}
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Image smallImg = null ;
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if(srcImg != null){
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//取源图
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int width = 60; //假设要缩小到200点像素
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int height = srcImg.getHeight(null)*60/srcImg.getWidth(null);//按比例，将高度缩减
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smallImg = srcImg.getScaledInstance(width, height, Image.SCALE_SMOOTH);//缩小
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}
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return smallImg;
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}
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/**
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* @param bfImage 图片路径
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*/
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public static void createAsciiPic(BufferedImage bfImage) throws IOException {
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final String base = "@#&$O";// 字符串由复杂到简单
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for (int y = 0; y < bfImage.getHeight(); y += 2) {
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for (int x = 0; x < bfImage.getWidth(); x++) {
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final int pixel = bfImage.getRGB(x, y);
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final int r = (pixel & 0xff0000) >> 16, g = (pixel & 0xff00) >> 8, b = pixel & 0xff;
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final float gray = 0.299f * r + 0.578f * g + 0.114f * b;
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final int index = Math.round(gray * (base.length() + 1) / 255);
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System.out.print(index >= base.length() ? " " : String.valueOf(base.charAt(index)));
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}
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System.out.println();
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}
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}
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/*
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public static void main(final String[] args) {
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try {
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AsciiPic.createAsciiPic(toBufferedImage(creatImage("DY.png")));
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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*/
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}
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