Path: csiph.com!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail
From: Cecil Westerhof <Cecil@decebal.nl>
Newsgroups: comp.lang.java.programmer
Subject: Re: Bash script with Image Magick to a Java program
Date: Fri, 27 May 2016 23:23:19 +0200
Organization: Decebal Computing
Lines: 62
Message-ID: <877fef2o1k.fsf@Equus.decebal.nl>
References: <87oa7s4f1u.fsf@Equus.decebal.nl> <ni8a27$t0j$1@gioia.aioe.org> <8760tz50qf.fsf@Equus.decebal.nl> <ni95r3$19j$1@dont-email.me> <871t4n4u12.fsf@Equus.decebal.nl> <nia17p$8ju$1@dont-email.me> <nia246$9g1$1@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain
Injection-Info: mx02.eternal-september.org; posting-host="12baf5125b19322b899c79c2e3878015"; logging-data="22259"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX1824olgxfhKXfT5qDJZHPfK98XW1aPGqdQ="
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux)
X-Homepage: http://www.decebal.nl/
Cancel-Lock: sha1:LhpWEywTZSNgMt0FDmW1mFkDoHM= sha1:adGTuU/V5ByVF/U+3sA5N+h3yuY=
Xref: csiph.com comp.lang.java.programmer:34408

On Friday 27 May 2016 20:02 CEST, Martin Gregorie wrote:

> I'm using:
> import java.awt.RenderingHints;
> import java.awt.geom.AffineTransform;
> import java.awt.image.AffineTransformOp;
> import java.awt.image.BufferedImage;
> import java.awt.image.BufferedImageFilter;
> import java.awt.image.BufferedImageOp;
> import java.awt.image.RescaleOp;
> import java.io.File;
> import java.io.IOException;
> import java.util.Hashtable;
> import javax.imageio.ImageIO;
> import org.gregorie.environ.ReportError;
>
> ... but obviously not all of them are being used to resize an image.
> Here's the code:
>
> public void resizeTo(int width)
> {
> re.trace(2, "resizeTo(" + width + ") started");
> int w = im.getWidth();
> int h = im.getHeight();
> double scale = width * 1.0 / w;
>
> if (noExpand && scale >= 1.0)
> {
> wouldExpand = true;
> re.trace(2, "Image is smaller than " + width +
> " wide: original size will be output");
> }
> else
> {
> wouldExpand = false;
> AffineTransform at = new AffineTransform();
> at.scale(scale, scale);
> AffineTransformOp op = new AffineTransformOp(at,
> AffineTransformOp.TYPE_BICUBIC);
> Double nw = new Double(w * scale);
> Double nh = new Double(h * scale);
> re.trace(2, "scale=" + scale +
> " new size w=" + nw.intValue() +
> " h=" + nh.intValue());
> re.trace(3, "Source buffer details: " + im);
> om = new BufferedImage(nw.intValue(),
> nh.intValue(),
> BufferedImage.TYPE_3BYTE_BGR);
> op.filter(im, om);
> }
>
> re.trace(1, "resizeTo(" + width + ") done");
> }
>
> The re.trace() calls are to my private traceing/debugging class

I will look into it. Thanks.

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof