[cairo] Anti-Grain Geometry - Yet another 2D Rendering Library
Marc Van Olmen
marc at sky4studios.be
Thu May 6 15:32:36 PDT 2004
Thanks for posting this, I have lurking around your list for many years and
I must say that AGG is the most impressive 2D engine I have ever seen. I
always loved reading your nicely written code and I really admire the OS
independence. It is something we all can learn from.
I'm OS X developer so I love always a project that is less depended on
exotic libraries I never heard from.
So again congratulations with your product and I hope indeed Cairo and AGG
Can benefit from each other one day.
on 5/6/04 4:53 PM, Maxim Shemanarev at mcseemagg at yahoo.com wrote:
> I have a similar project called Anti-Grain Geometry (AGG)
> that is an Open Source, free of charge graphic library, written
> in industrially standard C++.
> AGG doesn't depend on any graphic API or technology.
> Basically, you can think of AGG as of a rendering engine
> that produces pixel images in memory from some vectorial data.
> But of course, AGG can do much more than that.
> The ideas and the philosophy of AGG are:
> - Anti-Aliasing.
> - Subpixel Accuracy.
> - The highest possible quality.
> - High performance.
> - Platform independence and compatibility.
> - Flexibility and extensibility.
> - Lightweight design.
> - Reliability and stability (including numerical stability).
> Below there are some key features (but not all of them):
> - Rendering of arbitrary polygons with Anti-Aliasing and Subpixel
> - Gradients and Gouraud Shading.
> - Fast filtered image affine transformations, including many
> interpolation filters (bilinear, bicubic, spline16,
> spline36, sinc, Blackman).
> - Strokes with different types of line joins and line caps.
> - Dashed line generator.
> - Markers, such as arrowheads/arrowtails.
> - Fast vectorial polygon clipping to a rectangle.
> - Low-level clipping to multiple rectangular regions.
> - Alpha-Masking.
> - A new, fast Anti-Alias line algorithm.
> - Using arbitrary images as line patterns.
> - Rendering in separate color channels.
> - Perspective and bilinear transformations of vector and image
> - Boolean polygon operations (and, or, xor, sub) based on Alan
> Murta's General Polygon Clipper.
> AGG contains many interactive Demo examples that are platform independent
> too, and use a simple platform_support class that currently has two
> implementations, for Win32 API and X11 (no Motiff, no other dependencies,
> just basic X11). One of the examples is an SVG Viewer.
> For more information look at http://www.antigrain.com :
> News, Screenshots, Demo, Documentation, Download, etc.
> Currently I'm working on the documentation and new algorithms.
> I wouldn't like you to consider AGG as a potential competitor
> of Cairo Graphics, but there can be some possibilities of
> cooperation. AGG doesn't have a well developed infrastructure
> to support different back-ends, while Cairo Graphics does.
> On the other hand AGG design is much more flexible, it allows
> you to create custom pipelines, to work with different color
> spaces, to write faster in-memory renderers in addition to
> existing ones, etc.
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