Category Archives: Uncategorized

CamlGPC: An interface to Alan Murta’s GPC Polygon Clipper

Some of our coherence 2D graphics renderer examples used to rely on being able to robustly intersect and union polygons. For this, we used an interface to the General Polygon Clipper, which is a fast C library for such operations. … Continue reading

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GraphicsPDF: A version of Ocaml’s Graphics module which outputs PDF

I’ve been packaging up some little pieces of previously-released software as OPAM packages, hoping that will make them more widely used. GraphicsPDF is just like Graphics, but it outputs a PDF file of the commands, instead of displaying them on … Continue reading

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CamlPDF 1.7

The first new release of the CamlPDF library for a while is here: http://www.github.com/johnwhitington/camlpdf (Or, shortly, via OPAM.) The documentation is online here: http://www.coherentpdf.com/camlpdf A little introduction is here: http://www.coherentpdf.com/introduction_to_camlpdf.pdf Most importantly, CamlPDF is now open source, being under a … Continue reading

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PDF Command Line Tools 1.7 Upgrade now Available

CPDF Command Line Tools 1.7 is now available. This is a major release with many enhancements: Much faster (between 1.5 and 5 times) AES 256 decryption and encryption (PDF 1.7 and PDF 2.0) Object streams for smaller PDF files Better … Continue reading

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New book: OCaml from the Very Beginning

I’ve written a concise but self-contained introduction to writing computer programs with OCaml, suitable for the talented beginner to programming, or someone trying functional programming or OCaml for the first time. On your local Amazon: http://asin.info/a/0957671105 E-book: http://www.ocaml-book.com Sample chapters … Continue reading

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Proview PDF Editor 1.5 Upgrade – What’s New?

Proview 1.5 adds significant new features, whilst improving interactivity; functionality which required dialog boxes is now live and interactive. Adding text is now completely interactive with the new text inspector Merge and reorder pages within and between documents by drag … Continue reading

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PDF Explained, now available from O’Reilly

Our new book about PDF has just been published. You can find it at O’Reilly’s own site in printed and ebook form, or from Amazon and other booksellers. Here’s the publisher’s description: At last, here’s an approachable introduction to the … Continue reading

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PDF Command Line Tools 1.6

The latest version of our command line tools for processing PDF files has just been released. New Feature Highlights: Speed improvements on large, complex files Many robustness improvements, deals with more malformed files Detect low resolution images and missing fonts … Continue reading

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CPDFTK: Supported, Faster PDFTK

Coherent Graphics Ltd is pleased to introduce a commercial, supported, faster pdf command line tool with the same interface as the popular open source PDFTK tool. Download the demo here. Features: Merge PDFs Split into mutiple pages Rotate pages Decrypt … Continue reading

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Commercial, Supported, Faster PDFtk – Beta Testers Wanted

We’re writing a front end for our PDF tools with the same command line interface as pdftk, so that it can be used as a drop-in replacement for pdftk for people who can’t compile pdftk on their system and don’t … Continue reading

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