178 lines
8.8 KiB
HTML
178 lines
8.8 KiB
HTML
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<title>hint() | 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>hint()</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 class="">void setup() {
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size(400, 400, OPENGL);
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// Enable 4x oversampling (if supported)
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hint(ENABLE_OPENGL_4X_SMOOTH);
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}</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><p>Set various hints and hacks for the renderer. This is used to handle obscure rendering features that cannot be implemented
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in a consistent manner across renderers. Many options will often graduate to standard features instead of hints over time. </p>
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<p>hint(ENABLE_OPENGL_4X_SMOOTH) - Enable 4x anti-aliasing for OpenGL. This can help force anti-aliasing if it has not been enabled by the user.
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On some graphics cards, this can also be set by the graphics driver's control panel, however not all cards make this available.
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This hint must be called immediately after the size() command because it resets the renderer, obliterating any settings and anything drawn (and like size(),
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re-running the code that came before it again).</p>
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<p>hint(DISABLE_OPENGL_2X_SMOOTH) - In Processing 1.0, Processing always enables 2x smoothing when the OpenGL renderer is used.
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This hint disables the default 2x smoothing and returns the smoothing behavior found in earlier releases, where smooth() and noSmooth()
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could be used to enable and disable smoothing, though the quality was inferior. </p>
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<p>hint(DISABLE_DEPTH_TEST) - Disable the zbuffer, allowing you to draw on top of everything at will. When depth testing is disabled,
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items will be drawn to the screen sequentially, like a painting. This hint is most often used to draw in 3D, then draw in 2D on top of it
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(for instance, to draw GUI controls in 2D on top of a 3D interface). Starting in release 0149, this will also clear the depth buffer.
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Restore the default with hint(ENABLE_DEPTH_TEST), but note that with the depth buffer cleared, any 3D drawing that happens later in draw()
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will ignore existing shapes on the screen. </p>
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<p>hint(ENABLE_DEPTH_SORT) - Enable primitive z-sorting of triangles and lines in P3D and OPENGL.
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This can slow performance considerably, and the algorithm is not yet perfect. Restore the default with hint(DISABLE_DEPTH_SORT). </p>
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<p>hint(DISABLE_OPENGL_ERROR_REPORT) - Speeds up the OPENGL renderer setting by not checking for errors while running. Undo with hint(ENABLE_OPENGL_ERROR_REPORT). </p>
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<p>unhint() has been removed in favor of adding additional ENABLE/DISABLE constants to reset the default behavior. This prevents the double negatives, and also reinforces which hints can be enabled or disabled.</p></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>hint(<kbd>item</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>
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<table cellpadding="0" cellspacing="0" border="0">
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<tr class="">
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<th scope="row">item</th>
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<td>constant: name of the hint to be enabled or disabled</td>
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</tr>
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</table>
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</td>
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</tr>
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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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</tr>
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<tr class="">
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<th scope="row">Related</th>
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<td><a href="../PGraphics.1">PGraphics</a><br />
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<a href="../createGraphics_.1">createGraphics()</a><br />
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<a href="../size_.1">size()</a><br /></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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