zoom Image - Java 2D Graphics

Java examples for 2D Graphics:Image

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Description

zoom Image

Demo Code


//package com.java2s;
import java.awt.Image;

import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.io.File;

import javax.imageio.ImageIO;

public class Main {
    public static void zoomImage(String src, String dest, int w, int h)
            throws Exception {
        double wr = 0, hr = 0;
        File srcFile = new File(src);
        File destFile = new File(dest);
        BufferedImage bufImg = ImageIO.read(srcFile);
        Image Itemp = bufImg.getScaledInstance(w, h, Image.SCALE_SMOOTH);
        wr = w * 1.0 / bufImg.getWidth();
        hr = h * 1.0 / bufImg.getHeight();
        AffineTransformOp ato = new AffineTransformOp(
                AffineTransform.getScaleInstance(wr, hr), null);
        Itemp = ato.filter(bufImg, null);
        try {//w  ww .ja va  2 s. c  om
            ImageIO.write((BufferedImage) Itemp,
                    dest.substring(dest.lastIndexOf(".") + 1), destFile);
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}

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