52 lines
2.8 KiB
Plaintext
52 lines
2.8 KiB
Plaintext
****************************************************************************
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** **
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** The code in this folder is based on "The Lightweight Rasterizer" **
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** which in turn is based on project "Anti-Grain Geometry". **
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** **
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** The Lightweight Rasterizer is available from **
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** http://www.antigrain.com/lite/agg2_lite.zip **
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** **
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** You can read more about Anti-Grain Geometry on **
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** http://www.antigrain.com **
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** **
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** The code has been heavily modified for TouchGFX to allow the **
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** rasterizer to be used in embedded devices. **
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** **
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** Below you find the original copyright notice. **
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** **
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****************************************************************************
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----------------------------------------------------------------------------
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Anti-Grain Geometry - Version 2.1 Lite
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Copyright (C) 2002-2003 Maxim Shemanarev (McSeem)
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Permission to copy, use, modify, sell and distribute this software
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is granted provided this copyright notice appears in all copies.
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This software is provided "as is" without express or implied
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warranty, and with no claim as to its suitability for any purpose.
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The author gratefully acknowleges the support of David Turner,
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Robert Wilhelm, and Werner Lemberg - the authors of the FreeType
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libray - in producing this work. See http:www.freetype.org for details.
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----------------------------------------------------------------------------
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Contact: mcseem@antigrain.com
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mcseemagg@yahoo.com
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http:www.antigrain.com
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----------------------------------------------------------------------------
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Class Outline - implementation.
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Initially the rendering algorithm was designed by David Turner and the
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other authors of the FreeType library - see the above notice. I nearly
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created a similar renderer, but still I was far from David's work.
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I completely redesigned the original code and adapted it for Anti-Grain
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ideas. Two functions - renderLine and renderScanline are the core of
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the algorithm - they calculate the exact coverage of each pixel cell
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of the polygon. I left these functions almost as is, because there's
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no way to improve the perfection - hats off to David and his group!
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All other code is very different from the original.
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----------------------------------------------------------------------------
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