2011-11-03 01:45:04 PDT
Your link is broken.
Anyway, a PDF page has a rotation property, this is most probably the case here. The example does not take into account for this. A more complete rendering sequence would look like:
transformPage.setToIdentity();
Rectangle2D normalizedPagerect = getPage().getCropBox()
.toNormalizedRectangle();
PDFGeometryTools.adjustTransform(transformPage,
PDFGeometryTools.normalizeRotate(getPage().getRotate()),
normalizedPagerect);
//
double[] extent = new double[2];
extent[0] = normalizedPagerect.getWidth();
extent[1] = normalizedPagerect.getHeight();
transformPage.deltaTransform(extent, 0, extent, 0, 1);
double pageWidth = Math.abs(extent[0]);
double pageHeight = Math.abs(extent[1]);
//
int imgWidth = Math.abs((int) (pageWidth * scale));
int imgHeight = Math.abs((int) (pageHeight * scale));
double scaleX = scale;
double scaleY = -scale;
BufferedImage image = new BufferedImage(imgWidth, imgHeight,
BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = (Graphics2D) image.getGraphics();
IGraphicsContext g = new CwtAwtGraphicsContext(g2);
// init user space
transform.setToIdentity();
// apply conversion from screen to pdf page
transform.scale(scaleX, scaleY);
transform.translate(0, -pageHeight);
// apply pdf internal page transformation
transform.concatenate(transformPage);
try {
g.transform(transform);
renderPage(g);
writePage(image);
} finally {
g.dispose();
}
(not tested)
