236 lines
7.7 KiB
HTML
236 lines
7.7 KiB
HTML
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<title>size() | reference | Processing.js</title>
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<span class="tagline">a port of the Processing Visualization Language</span>
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<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
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<tr class="name-row">
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<th scope="row">Name</th>
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<td><h3>size()</h3></td>
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</tr>
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<tr class="">
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<th scope="row">Examples</th>
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<td><div class="example"><pre>void setup() {
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size(320, 240);
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background(153);
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}
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void draw() {
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line(0, 0, width, height);
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}</pre></pre></div></td>
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</tr>
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<tr class="">
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<th scope="row">Description</th>
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<td>Defines the dimension of the display window in units of pixels. The <b>size()</b> function <em>must</em> be the first line in <b>setup()</b>. If <b>size()</b> is not called, the default size of the window is 100x100 pixels. The system variables <b>width</b> and <b>height</b> are set by the parameters passed to the <b>size()</b> function. <br /><br />
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Employ numeric values in the <b>size()</b> statement, and then use the built-in <b>width</b> and <b>height</b> variables inside your program when you need the dimensions of the display window. <br /><br />
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Rendering graphics requires tradeoffs between speed, accuracy, and general usefulness of the available features. None of the renderers are perfect, so we provide multiple options so that you can decide what tradeoffs make the most sense for your project. We'd prefer all of them to have perfect visual accuracy, high performance, and support a wide range of features, but that's simply not possible. <br /><br />
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Again, the size() method must be the first line of the code (or first item inside setup). Any code that appears before the size() command may run more than once, which can lead to confusing results.</td>
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</tr>
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<tr class="">
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<th scope="row">Syntax</th>
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<td><pre>size(<kbd>width</kbd>, <kbd>height</kbd>)</pre></td>
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</tr>
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<tr class="">
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<th scope="row">Parameters</th>
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<td><table cellpadding="0" cellspacing="0" border="0">
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<tr class="">
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<th scope="row">width</th>
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<td>int: width of the display window in units of pixels</td>
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</tr>
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<tr class="">
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<th scope="row">height</th>
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<td>int: height of the display window in units of pixels</td>
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</tr>
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</table></td>
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</tr>
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<tr class="">
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<th scope="row">Returns</th>
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<td>None</td>
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<tr class="">
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<th scope="row">Usage</th>
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<td>Web & Application</td>
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<p>This reference is licensed under the CC BY-NC-SA 2.0 license:</p>
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Processing is an open visualization language developed by
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<a href="http://benfry.com/">Ben Fry</a> & <a href="http://reas.com/">Casey Reas</a>,
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and originally ported to Javascript by
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