We are using DynaPDF Pro to, among other things, create a PDF Viewer in one of our projects. We are trying to implement a function that requires zooming in to create a small raster image (on the order of 200 X 200 pixels) from a very small section of the PDF. The zoom factor can be as high as 250X, so the size of the PDF rect being rasterized is on the order of 1 pt X 1 pt.
We do this by setting the cropBox to whatever we need, and then rasterizing the portion of the PDF within that cropBox. The performance of doing this is surprisingly good - on the order of a one or two hundred milliseconds - IF the crop area is near the upper left hand corner of the PDF. But, the performance really begins to suffer as a function of the distance of the crop area from the upper left. For example, if it is near the lower right corner of a letter- or a-4 size PDF page, the rasterization time can be several seconds, and in some cases, the result is an empty picture even though the DynaPDFRasterizerMBS.renderPage function does not return “false.” Is this performance dependence just a feature of the implementation which one can’t get around, or are there solutions to improve the performance? Thanks, -- Peter Truskier Premedia Systems, Inc. Berkeley, CA USA _______________________________________________ Mbsplugins_monkeybreadsoftware.info mailing list mbsplugins@monkeybreadsoftware.info https://ml01.ispgateway.de/mailman/listinfo/mbsplugins_monkeybreadsoftware.info
