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author | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2023-06-24 23:23:54 +0000 |
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committer | Akira Kakuto <kakuto@fuk.kindai.ac.jp> | 2023-06-24 23:23:54 +0000 |
commit | 3fed8e215415fdfc865acc39c39dbc4666b60e74 (patch) | |
tree | 7a05a1eafbe52abc3eea6b1d594ef5a797e5346a /Build/source/libs/freetype2/freetype-src/docs/reference/ft2-raster.html | |
parent | 26b39aa87a9ac83dab1e9b770125dc3defd9a405 (diff) |
freetype 2.13.1
git-svn-id: svn://tug.org/texlive/trunk@67463 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/libs/freetype2/freetype-src/docs/reference/ft2-raster.html')
-rw-r--r-- | Build/source/libs/freetype2/freetype-src/docs/reference/ft2-raster.html | 172 |
1 files changed, 137 insertions, 35 deletions
diff --git a/Build/source/libs/freetype2/freetype-src/docs/reference/ft2-raster.html b/Build/source/libs/freetype2/freetype-src/docs/reference/ft2-raster.html index 172b926b78c..df13b652dec 100644 --- a/Build/source/libs/freetype2/freetype-src/docs/reference/ft2-raster.html +++ b/Build/source/libs/freetype2/freetype-src/docs/reference/ft2-raster.html @@ -6,7 +6,7 @@ <meta charset="utf-8"> <meta name="viewport" content="width=device-width,initial-scale=1"> - <meta name="description" content="API Reference Documentation for FreeType-2.13.0"> + <meta name="description" content="API Reference Documentation for FreeType-2.13.1"> @@ -14,11 +14,11 @@ <link rel="icon" href="images/favico.ico"> - <meta name="generator" content="mkdocs-1.2.1, mkdocs-material-7.1.9"> + <meta name="generator" content="mkdocs-1.4.3, mkdocs-material-7.1.9"> - <title>Scanline Converter - FreeType-2.13.0 API Reference</title> + <title>Scanline Converter - FreeType-2.13.1 API Reference</title> @@ -82,7 +82,7 @@ <header class="md-header" data-md-component="header"> <nav class="md-header__inner md-grid" aria-label="Header"> - <a href="index.html" title="FreeType-2.13.0 API Reference" class="md-header__button md-logo" aria-label="FreeType-2.13.0 API Reference" data-md-component="logo"> + <a href="index.html" title="FreeType-2.13.1 API Reference" class="md-header__button md-logo" aria-label="FreeType-2.13.1 API Reference" data-md-component="logo"> <img src="images/favico.ico" alt="logo"> @@ -94,7 +94,7 @@ <div class="md-header__ellipsis"> <div class="md-header__topic"> <span class="md-ellipsis"> - FreeType-2.13.0 API Reference + FreeType-2.13.1 API Reference </span> </div> <div class="md-header__topic" data-md-component="header-topic"> @@ -161,12 +161,12 @@ <nav class="md-nav md-nav--primary" aria-label="Navigation" data-md-level="0"> <label class="md-nav__title" for="__drawer"> - <a href="index.html" title="FreeType-2.13.0 API Reference" class="md-nav__button md-logo" aria-label="FreeType-2.13.0 API Reference" data-md-component="logo"> + <a href="index.html" title="FreeType-2.13.1 API Reference" class="md-nav__button md-logo" aria-label="FreeType-2.13.1 API Reference" data-md-component="logo"> <img src="images/favico.ico" alt="logo"> </a> - FreeType-2.13.0 API Reference + FreeType-2.13.1 API Reference </label> <ul class="md-nav__list" data-md-scrollfix> @@ -296,8 +296,8 @@ <li class="md-nav__item"> - <a href="ft2-version.html" class="md-nav__link"> - FreeType Version + <a href="ft2-basic_types.html" class="md-nav__link"> + Basic Data Types </a> </li> @@ -308,8 +308,80 @@ <li class="md-nav__item"> - <a href="ft2-basic_types.html" class="md-nav__link"> - Basic Data Types + <a href="ft2-library_setup.html" class="md-nav__link"> + Library Setup + </a> + </li> + + + + + + + + <li class="md-nav__item"> + <a href="ft2-face_creation.html" class="md-nav__link"> + Face Creation + </a> + </li> + + + + + + + + <li class="md-nav__item"> + <a href="ft2-font_testing_macros.html" class="md-nav__link"> + Font Testing Macros + </a> + </li> + + + + + + + + <li class="md-nav__item"> + <a href="ft2-sizing_and_scaling.html" class="md-nav__link"> + Sizing and Scaling + </a> + </li> + + + + + + + + <li class="md-nav__item"> + <a href="ft2-glyph_retrieval.html" class="md-nav__link"> + Glyph Retrieval + </a> + </li> + + + + + + + + <li class="md-nav__item"> + <a href="ft2-character_mapping.html" class="md-nav__link"> + Character Mapping + </a> + </li> + + + + + + + + <li class="md-nav__item"> + <a href="ft2-information_retrieval.html" class="md-nav__link"> + Information Retrieval </a> </li> @@ -320,13 +392,43 @@ <li class="md-nav__item"> - <a href="ft2-base_interface.html" class="md-nav__link"> - Base Interface + <a href="ft2-other_api_data.html" class="md-nav__link"> + Other API Data </a> </li> + </ul> + </nav> + </li> + + + + + + + + + + + + <li class="md-nav__item md-nav__item--nested"> + + + <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_5" type="checkbox" id="__nav_5" > + + <label class="md-nav__link" for="__nav_5"> + Extended API + <span class="md-nav__icon md-icon"></span> + </label> + <nav class="md-nav" aria-label="Extended API" data-md-level="1"> + <label class="md-nav__title" for="__nav_5"> + <span class="md-nav__icon md-icon"></span> + Extended API + </label> + <ul class="md-nav__list" data-md-scrollfix> + @@ -428,14 +530,14 @@ <li class="md-nav__item md-nav__item--nested"> - <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_5" type="checkbox" id="__nav_5" > + <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_6" type="checkbox" id="__nav_6" > - <label class="md-nav__link" for="__nav_5"> + <label class="md-nav__link" for="__nav_6"> Format-Specific API <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" aria-label="Format-Specific API" data-md-level="1"> - <label class="md-nav__title" for="__nav_5"> + <label class="md-nav__title" for="__nav_6"> <span class="md-nav__icon md-icon"></span> Format-Specific API </label> @@ -590,14 +692,14 @@ <li class="md-nav__item md-nav__item--nested"> - <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_6" type="checkbox" id="__nav_6" > + <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7" type="checkbox" id="__nav_7" > - <label class="md-nav__link" for="__nav_6"> + <label class="md-nav__link" for="__nav_7"> Controlling FreeType Modules <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" aria-label="Controlling FreeType Modules" data-md-level="1"> - <label class="md-nav__title" for="__nav_6"> + <label class="md-nav__title" for="__nav_7"> <span class="md-nav__icon md-icon"></span> Controlling FreeType Modules </label> @@ -728,14 +830,14 @@ <li class="md-nav__item md-nav__item--nested"> - <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7" type="checkbox" id="__nav_7" > + <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8" type="checkbox" id="__nav_8" > - <label class="md-nav__link" for="__nav_7"> + <label class="md-nav__link" for="__nav_8"> Cache Sub-System <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" aria-label="Cache Sub-System" data-md-level="1"> - <label class="md-nav__title" for="__nav_7"> + <label class="md-nav__title" for="__nav_8"> <span class="md-nav__icon md-icon"></span> Cache Sub-System </label> @@ -772,14 +874,14 @@ <li class="md-nav__item md-nav__item--active md-nav__item--nested"> - <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_8" type="checkbox" id="__nav_8" checked> + <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_9" type="checkbox" id="__nav_9" checked> - <label class="md-nav__link" for="__nav_8"> + <label class="md-nav__link" for="__nav_9"> Support API <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" aria-label="Support API" data-md-level="1"> - <label class="md-nav__title" for="__nav_8"> + <label class="md-nav__title" for="__nav_9"> <span class="md-nav__icon md-icon"></span> Support API </label> @@ -1089,14 +1191,14 @@ <li class="md-nav__item md-nav__item--nested"> - <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_9" type="checkbox" id="__nav_9" > + <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_10" type="checkbox" id="__nav_10" > - <label class="md-nav__link" for="__nav_9"> + <label class="md-nav__link" for="__nav_10"> Error Codes <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" aria-label="Error Codes" data-md-level="1"> - <label class="md-nav__title" for="__nav_9"> + <label class="md-nav__title" for="__nav_10"> <span class="md-nav__icon md-icon"></span> Error Codes </label> @@ -1143,14 +1245,14 @@ <li class="md-nav__item md-nav__item--nested"> - <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_10" type="checkbox" id="__nav_10" > + <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_11" type="checkbox" id="__nav_11" > - <label class="md-nav__link" for="__nav_10"> + <label class="md-nav__link" for="__nav_11"> Miscellaneous <span class="md-nav__icon md-icon"></span> </label> <nav class="md-nav" aria-label="Miscellaneous" data-md-level="1"> - <label class="md-nav__title" for="__nav_10"> + <label class="md-nav__title" for="__nav_11"> <span class="md-nav__icon md-icon"></span> Miscellaneous </label> @@ -1350,7 +1452,7 @@ <hr /> <h1 id="scanline-converter">Scanline Converter<a class="headerlink" href="#scanline-converter" title="Permanent link">¶</a></h1> <h2 id="synopsis">Synopsis<a class="headerlink" href="#synopsis" title="Permanent link">¶</a></h2> -<p>A raster or a rasterizer is a scan converter in charge of producing a pixel coverage bitmap that can be used as an alpha channel when compositing a glyph with a background. FreeType comes with two rasterizers: bilevel <code>raster1</code> and anti-aliased <code>smooth</code> are two separate modules. They are usually called from the high-level <code><a href="ft2-base_interface.html#ft_load_glyph">FT_Load_Glyph</a></code> or <code><a href="ft2-base_interface.html#ft_render_glyph">FT_Render_Glyph</a></code> functions and produce the entire coverage bitmap at once, while staying largely invisible to users.</p> +<p>A raster or a rasterizer is a scan converter in charge of producing a pixel coverage bitmap that can be used as an alpha channel when compositing a glyph with a background. FreeType comes with two rasterizers: bilevel <code>raster1</code> and anti-aliased <code>smooth</code> are two separate modules. They are usually called from the high-level <code><a href="ft2-glyph_retrieval.html#ft_load_glyph">FT_Load_Glyph</a></code> or <code><a href="ft2-glyph_retrieval.html#ft_render_glyph">FT_Render_Glyph</a></code> functions and produce the entire coverage bitmap at once, while staying largely invisible to users.</p> <p>Instead of working with complete coverage bitmaps, it is also possible to intercept consecutive pixel runs on the same scanline with the same coverage, called <em>spans</em>, and process them individually. Only the <code>smooth</code> rasterizer permits this when calling <code><a href="ft2-outline_processing.html#ft_outline_render">FT_Outline_Render</a></code> with <code><a href="ft2-raster.html#ft_raster_params">FT_Raster_Params</a></code> as described below.</p> <p>Working with either complete bitmaps or spans it is important to think of them as colorless coverage objects suitable as alpha channels to blend arbitrary colors with a background. For best results, it is recommended to use gamma correction, too.</p> <p>This section also describes the public API needed to set up alternative <code><a href="ft2-module_management.html#ft_renderer">FT_Renderer</a></code> modules.</p> @@ -1382,7 +1484,7 @@ <h4>note</h4> <p>This structure is used by the span drawing callback type named <code><a href="ft2-raster.html#ft_spanfunc">FT_SpanFunc</a></code> that takes the y coordinate of the span as a parameter.</p> -<p>The anti-aliased rasterizer produces coverage values from 0 to 255, this is, from completely transparent to completely opaque.</p> +<p>The anti-aliased rasterizer produces coverage values from 0 to 255, that is, from completely transparent to completely opaque.</p> <hr> <h2 id="ft_spanfunc">FT_SpanFunc<a class="headerlink" href="#ft_spanfunc" title="Permanent link">¶</a></h2> @@ -1508,7 +1610,7 @@ <p>This flag is only used in direct rendering mode. If set, the output will be clipped to a box specified in the <code>clip_box</code> field of the <code><a href="ft2-raster.html#ft_raster_params">FT_Raster_Params</a></code> structure. Otherwise, the <code>clip_box</code> is effectively set to the bounding box and all spans are generated.</p> </td></tr> <tr><td class="val" id="ft_raster_flag_sdf">FT_RASTER_FLAG_SDF</td><td class="desc"> -<p>This flag is set to indicate that a signed distance field glyph image should be generated. This is only used while rendering with the <code><a href="ft2-base_interface.html#ft_render_mode">FT_RENDER_MODE_SDF</a></code> render mode.</p> +<p>This flag is set to indicate that a signed distance field glyph image should be generated. This is only used while rendering with the <code><a href="ft2-glyph_retrieval.html#ft_render_mode">FT_RENDER_MODE_SDF</a></code> render mode.</p> </td></tr> </table> @@ -1792,7 +1894,7 @@ <div class="md-dialog" data-md-component="dialog"> <div class="md-dialog__inner md-typeset"></div> </div> - <script id="__config" type="application/json">{"base": ".", "features": [], "translations": {"clipboard.copy": "Copy to clipboard", "clipboard.copied": "Copied to clipboard", "search.config.lang": "en", "search.config.pipeline": "trimmer, stopWordFilter", "search.config.separator": "[\\s\\-]+", "search.placeholder": "Search", "search.result.placeholder": "Type to start searching", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.term.missing": "Missing", "select.version.title": "Select version"}, "search": "assets/javascripts/workers/search.477d984a.min.js", "version": null}</script> + <script id="__config" type="application/json">{"base": ".", "features": [], "search": "assets/javascripts/workers/search.477d984a.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.config.lang": "en", "search.config.pipeline": "trimmer, stopWordFilter", "search.config.separator": "[\\s\\-]+", "search.placeholder": "Search", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version.title": "Select version"}, "version": null}</script> <script src="assets/javascripts/bundle.82b56eb2.min.js"></script> |