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<title>FreeType Glyph Conventions</title>
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<div id="top"
     class="bar">
  <h1><a href="http://freetype.org/index.html">FreeType</a> Glyph Conventions</h1>
</div>

<div id="introduction">
          <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 all developers who need to
            understand digital typography, especially if you want to
            use the FreeType&nbsp;2 library in your projects.</p>
        </div>

<div id="contents">
          <h3><a href="glyphs-1.html">I. Basic Typographic
              Concepts</a></h3>
          <ul>
            <li>
              <a href="glyphs-1.html#section-1">1. Font files, format
                and information</a>
            </li>
            <li>
              <a href="glyphs-1.html#section-2">2. Character images
                and mappings</a>
            </li>
            <li>
              <a href="glyphs-1.html#section-3">3. Character and font
                metrics</a>
            </li>
          </ul>

<h3><a href="glyphs-2.html">II. Glyph Outlines</a></h3>
          <ul>
            <li>
              <a href="glyphs-2.html#section-1">1. Pixels, points and
                device resolutions</a>
            </li>
            <li>
              <a href="glyphs-2.html#section-2">2. Vectorial
                representation</a>
            </li>
            <li>
              <a href="glyphs-2.html#section-3">3. Hinting and bitmap
                rendering</a>
            </li>
          </ul>

<h3><a href="glyphs-3.html">III. Glyph Metrics</a></h3>
          <ul>
            <li>
              <a href="glyphs-3.html#section-1">1. Baseline, pens and
                layouts</a>
            </li>
            <li>
              <a href="glyphs-3.html#section-2">2. Typographic metrics
                and bounding boxes</a>
            </li>
            <li>
              <a href="glyphs-3.html#section-3">3. Bearings and
              advances</a>
            </li>
            <li>
              <a href="glyphs-3.html#section-4">4. The effects of
                grid-fitting</a>
            </li>
            <li>
              <a href="glyphs-3.html#section-5">5. Text widths and
                bounding box</a>
            </li>
          </ul>

<h3><a href="glyphs-4.html">IV. Kerning</a></h3>
          <ul>
            <li>
              <a href="glyphs-4.html#section-1">1. Kerning pairs</a>
            </li>
            <li>
              <a href="glyphs-4.html#section-2">2. Applying
                kerning</a>
            </li>
          </ul>

<h3><a href="glyphs-5.html">V. Text Processing</a></h3>
          <ul>
            <li>
              <a href="glyphs-5.html#section-1">1. Writing simple text
                strings</a>
            </li>
            <li>
              <a href="glyphs-5.html#section-2">2. Sub-pixel
                positioning</a>
            </li>
            <li>
              <a href="glyphs-5.html#section-3">3. Simple kerning</a>
            </li>
            <li>
              <a href="glyphs-5.html#section-4">4. Right-to-left
                layouts</a>
            </li>
            <li>
              <a href="glyphs-5.html#section-5">5. Vertical
                layouts</a>
            </li>
          </ul>

<h3><a href="glyphs-6.html">VI. FreeType Outlines</a></h3>
          <ul>
            <li>
              <a href="glyphs-6.html#section-1">1. FreeType outline
                description and structure</a>
            </li>
            <li>
              <a href="glyphs-6.html#section-2">2. Bounding and
                control box computations</a>
            </li>
            <li>
              <a href="glyphs-6.html#section-3">3. Coordinates,
                scaling, and grid-fitting</a>
            </li>
          </ul>

<h3><a href="glyphs-7.html">VII. FreeType Bitmaps</a></h3>
          <ul>
            <li>
              <a href="glyphs-7.html#section-1">1. Vectorial versus
                pixel coordinates</a>
            </li>
            <li>
              <a href="glyphs-7.html#section-2">2. The <tt>FT_Bitmap</tt>
                descriptor</a>
            </li>
            <li>
              <a href="glyphs-7.html#section-3">3. Converting outlines
                into bitmaps and pixmaps</a>
              </li>
          </ul>
        </div>

<div class="updated">
          <p>Last update: 07-Dec-2014</p>
        </div>
      </div>
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<li class="secondary">
      <a href="glyphs-1.html" class="current">FreeType Glyph Conventions</a>
    </li>
    <li class="tertiary">
      <a href="glyphs-1.html">Basic Typographic Concepts</a>
    </li>
    <li class="tertiary">
      <a href="glyphs-2.html">Glyph Outlines</a>
    </li>
    <li class="tertiary">
      <a href="glyphs-3.html">Glyph Metrics</a>
    </li>
    <li class="tertiary">
      <a href="glyphs-4.html">Kerning</a>
    </li>
    <li class="tertiary">
      <a href="glyphs-5.html">Text Processing</a>
    </li>
    <li class="tertiary">
      <a href="glyphs-6.html">FreeType Outlines</a>
    </li>
    <li class="tertiary">
      <a href="glyphs-7.html">FreeType Bitmaps</a>
    </li>
  </ul>
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