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For better handling of some formats, perform rotation with help of Graphics2D

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git-svn-id: https://zxing.googlecode.com/svn/trunk@1240 59b500cc-1b3d-0410-9834-0bbf25fbcc57
This commit is contained in:
srowen 2010-03-05 11:08:53 +00:00
parent 70933a7ffd
commit 813f4070bf
1 changed files with 6 additions and 4 deletions
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10
javase/src/com/google/zxing/client/j2se/BufferedImageLuminanceSource.java
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@ -18,9 +18,8 @@ package com.google.zxing.client.j2se;
import com.google.zxing.LuminanceSource;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.awt.image.BufferedImageOp;
import java.awt.image.AffineTransformOp;
import java.awt.geom.AffineTransform;
/**
@ -129,11 +128,14 @@ public final class BufferedImageLuminanceSource extends LuminanceSource {
// Rotate 90 degrees counterclockwise.
AffineTransform transform = new AffineTransform(0.0, -1.0, 1.0, 0.0, 0.0, sourceWidth);
BufferedImageOp op = new AffineTransformOp(transform, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
// Note width/height are flipped since we are rotating 90 degrees.
BufferedImage rotatedImage = new BufferedImage(sourceHeight, sourceWidth, image.getType());
op.filter(image, rotatedImage);
// Draw the original image into rotated, via transformation
Graphics2D g = rotatedImage.createGraphics();
g.drawImage(image, transform, null);
g.dispose();
// Maintain the cropped region, but rotate it too.
int width = getWidth();