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<title>FreeType Glyph Conventions</title>
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<h1>
FreeType Glyph Conventions</h1></center>
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<h2>
version 2.1</h2></center>
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<h3>
Copyright 1998-2000 David Turner (<a href="mailto:david@freetype.org">david@freetype.org</a>)<br>
Copyright 2000 The FreeType Development Team (<a href="devel@freetype.org">devel@freetype.org</a>)</h3></center>
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Introduction
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<p>This document presents the core conventions used within the FreeType
library to manage font and glyph data. It is a <em>must-read</em> for
any people that needs to understand digital typography, especially
if you want to use the FreeType 2 library in your projects.</p>
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Table of Contents
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<a href="glyphs-1.html">
<h2>I. Basic Typographic Concepts:</h2>
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<ul>
<h3>
<a href="glyphs-1.html#section-1">
1. Font files, format and information
</a>
<br>
<a href="glyphs-1.html#section-2">
2. Character images and mappings
</a>
<br>
<a href="glyphs-1.html#section-3">
3. Character and font metrics
</a>
<br>
</ul>
<a href="glyphs-2.html">
<h2>II. Glyph Outlines:</h2>
</a>
<ul>
<h3>
<a href="glyphs-2.html#section-1">
1. Pixels, Points and Device Resolutions
</a>
<br>
<a href="glyphs-2.html#section-2">
2. Vectorial representation
</a>
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<a href="glyphs-2.html#section-3">
3. Hinting and bitmap rendering
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</ul>
<a href="glyphs-3.html">
<h2>III. Glyph Metrics:</h2>
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<ul>
<h3>
<a href="glyphs-3.html#section-1">
1. Baseline, Pens and Layouts
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<br>
<a href="glyphs-3.html#section-2">
2. Typographic metrics
</a>
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<a href="glyphs-3.html#section-3">
3. Bearings and Advances
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<a href="glyphs-3.html#section-4">
4. The effects of grid-fitting
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<a href="glyphs-3.html#section-5">
5. Text widths and bounding box
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</ul>
<a href="glyphs-4.html">
<h2>IV. Kerning:</h2>
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<h3>
<a href="glyphs-4.html#section-1">
1. Kerning pairs
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<a href="glyphs-4.html#section-2">
2. Applying kerning
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</ul>
<a href="glyphs-5.html">
<h2>V. Text Processing:</h2>
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<ul>
<h3>
<a href="glyphs-5.html#section-1">
1. Writing simple text strings
</a>
<br>
<a href="glyphs-5.html#section-2">
2. Sub-pixel positioning
</a>
<br>
<a href="glyphs-5.html#section-3">
3. Simple kerning
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<a href="glyphs-5.html#section-4">
4. Right-to-left layouts
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<a href="glyphs-5.html#section-5">
5. Vertical layouts
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<a href="glyphs-5.html#section-6">
6. WYSIWYG text layouts
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<br>
</ul>
<a href="glyphs-6.html">
<h2>VI. FreeType Outlins:</h2>
</a>
<ul>
<h3>
<a href="glyphs-6.html#section-1">
1. FreeType outline description and structure
</a>
<br>
<a href="glyphs-6.html#section-2">
2. Bounding and control box computations
</a>
<br>
<a href="glyphs-6.html#section-3">
3. Coordinates, scaling and grid-fitting
</a>
<br>
</ul>
<a href="glyphs-7.html">
<h2>VII. FreeType Bitmaps:</h2>
</a>
<ul>
<h3>
<a href="glyphs-7.html#section-1">
1. Vectorial versus pixel coordinates
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<br>
<a href="glyphs-7.html#section-2">
2. FreeType bitmap descriptor
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<a href="glyphs-7.html#section-3">
3. Converting outlines into bitmaps
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<br>
</ul>
</p>
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