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* Chickadee: (chickadee). Game programming toolkit for Guile.
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<a name="Fonts"></a>
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<p>
Next: <a href="Particles.html#Particles" accesskey="n" rel="next">Particles</a>, Previous: <a href="Lines-and-Shapes.html#Lines-and-Shapes" accesskey="p" rel="prev">Lines and Shapes</a>, Up: <a href="Graphics.html#Graphics" accesskey="u" rel="up">Graphics</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Index.html#Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="Fonts-1"></a>
<h4 class="subsection">2.3.5 Fonts</h4>
<p>Printing text to the screen is quite easy:
</p>
<div class="example">
<pre class="example">(draw-text "Hello, world" (vec2 100.0 100.0))
</pre></div>
<p>Chickadee loads and renders bitmap fonts in the
<a href="http://www.angelcode.com/products/bmfont/doc/file_format.html">Angel Code format</a>. A default font named “Good Neighbors” is
built-in to Chickadee and is used for all text rendering operations
where a font is not specified, as is the case in the above example.
</p>
<p>The following procedures can be found in the <code>(chickadee render
font)</code> module:
</p>
<dl>
<dt><a name="index-load_002dfont"></a>Procedure: <strong>load-font</strong> <em>file</em></dt>
<dd><p>Load the Angel Code font (in either XML or FNT format) in <var>file</var>
and return a new font object.
</p></dd></dl>
<dl>
<dt><a name="index-font_003f"></a>Procedure: <strong>font?</strong> <em>obj</em></dt>
<dd><p>Return <code>#t</code> if <var>obj</var> is a font object.
</p></dd></dl>
<dl>
<dt><a name="index-font_002dface"></a>Procedure: <strong>font-face</strong> <em>font</em></dt>
<dd><p>Return the name of <var>font</var>.
</p></dd></dl>
<dl>
<dt><a name="index-font_002dline_002dheight"></a>Procedure: <strong>font-line-height</strong> <em>font</em></dt>
<dd><p>Return the line height of <var>font</var>.
</p></dd></dl>
<dl>
<dt><a name="index-font_002dline_002dheight-1"></a>Procedure: <strong>font-line-height</strong> <em>font</em></dt>
<dd><p>Return the line height of <var>font</var>.
</p></dd></dl>
<dl>
<dt><a name="index-font_002dbold_003f"></a>Procedure: <strong>font-bold?</strong> <em>font</em></dt>
<dd><p>Return <code>#t</code> if <var>font</var> is a bold font.
</p></dd></dl>
<dl>
<dt><a name="index-font_002ditalic_003f"></a>Procedure: <strong>font-italic?</strong> <em>font</em></dt>
<dd><p>Return <code>#t</code> if <var>font</var> is an italicized font.
</p></dd></dl>
<dl>
<dt><a name="index-draw_002dtext"></a>Procedure: <strong>draw-text</strong> <em>text position</em></dt>
<dd><p>[#:font] [#:origin] [#:scale] [#:rotation] [#:blend-mode]
[#:start 0] [#:end <code>(string-length text)</code>]
</p>
<p>Draw the string <var>text</var> with the first character starting at
<var>position</var> using <var>font</var>. If <var>font</var> is not specified, a
built-in font is used.
</p>
<div class="example">
<pre class="example">(draw-text font "Hello, world!" (vec2 128.0 128.0))
</pre></div>
<p>To render a substring of <var>text</var>, use the <var>start</var> and <var>end</var>
arguments.
</p>
<p>Refer to <code>draw-sprite</code> (see <a href="Sprites.html#Sprites">Sprites</a>) for information about
the other arguments.
</p></dd></dl>
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