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<!doctype html>
<html class="csstransforms csstransforms3d csstransitions" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta charset="utf-8" />
<title>NVPR Cursive Text Sample</title>
<meta name="description" content="NVPR Cursive Text Sample" />
<!-- CSS files -->
<link href="./css/application.css" rel="stylesheet" type="text/css" />
<link href="./css/styleguide.css" rel="stylesheet" type="text/css" />
<!--<link rel="stylesheet" type="text/css" href="sdk_samples.css" />-->
<!-- scripts to include -->
<script src="./js/jquery.js"></script>
<script src="./js/owl.carousel.js"></script>
<script src="./js/jquery.fitvids.js"></script>
<script src="./js/jquery.colorbox.js"></script>
<script src="./js/jquery.isotope.js"></script>
<script src="./js/jquery.sidr.js"></script>
<script src="./js/bootstrap.js"></script>
<script src="./js/application.js"></script>
<script src="./js/prettify.js"></script>
</head>
<body style="">
<!--Navbar-->
<nav class="navbar navbar-inverse navbar-static-top" role="navigation">
<div class="container">
<div class="navbar-header" style="">
<!--<button class="navbar-toggle" type="button"><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span></button>-->
<div class="logo-header">
<a class="navbar-brand logo" href="http://developer.nvidia.com/gameworks"><img alt="NVidia Gameworks" height="21" src="./images/developerzone_gameworks_logo.png" width="245"></a>
</div>
</div>
</div>
</nav>
<!-- main body block -->
<div id="content" class="container">
<div class="row" id="subprojcontent">
<div class="col-md-8">
<div class="page-header">
<h1>NVPR Cursive Text Sample</h1>
</div>
<div class="row">
<div class="subprojmetadata">
<b class="small">Category:</b>
<span class="btn btn-primary btn-xs subprojmetacat"> Visuals </span>
</div>
<div class="subprojmetadata">
<b class="small">Min PC GPU:</b>
<span class="subprojmetagpu">GeForce Fermi-class</span>
</div>
<div class="subprojmetadata">
<b class="small">Min Tegra Device:</b>
<span class="subprojmetagpu">Tegra K1</span>
</div>
</div>
<div class="row">
<h3>Description</h3>
<p>This sample demonstrates how to use NV_path_rendering to animate the dash pattern of a stroked path, as a way to simulate live cursive writing.</p>
<a data-colorbox="true" href="images/cursive-screenshot.jpg"><img class="subprojscreen" src="images/cursive-screenshot.jpg" width="400" alt="Screenshot" /></a>
</div>
<div class="row">
<h3>APIs Used</h3>
<ul>
<li class="odd">NV_path_rendering</li>
<li class="even">EXT_direct_state_access</li>
</ul>
</div>
<div class="row">
<h3>Shared User Interface</h3>
<p>The Graphics samples all share a common app framework and certain user interface elements, centered around the "Tweakbar" panel on the left side of the screen which lets you interactively control certain variables in each sample.</p>
<p>To show and hide the Tweakbar, simply click or touch the triangular button positioned in the top-left of the view.</p>
<div class="subprojmetadata">
<p>Other controls are listed below.</p>
<table class="table table-striped small subprojcontrolstable" id="sharedcontrolstable">
<tr>
<th class="subprojcontrolsdevice">Device</th>
<th class="subprojcontrolsinput">Input</th>
<th class="subprojcontrolsresult">Result</th>
</tr>
<tr class="odd">
<td class="subprojcontrolsdevicekind">touch</td>
<td>2-Finger Drag</td> <td>Translate the view</td>
</tr>
<tr class="even">
<td> </td>
<td>2-Finger Pinch</td> <td>Scale the view</td>
</tr>
<tr class="odd">
<td class="subprojcontrolsdevicekind">mouse</td>
<td>Left-Click Drag</td> <td>Translate the view</td>
</tr>
<tr class="even">
<td> </td>
<td>Right-Click Drag</td> <td>Scale the view (up:out, down:in)</td>
</tr>
<tr class="odd">
<td class="subprojcontrolsdevicekind">keyboard</td>
<td>Esc</td> <td>Quit the application</td>
</tr>
<tr class="even">
<td> </td>
<td>Tab</td> <td>Toggle TweakBar visibility</td>
</tr>
<tr class="odd">
<td class="subprojcontrolsdevicekind">gamepad</td>
<td>Start</td> <td>Toggle TweakBar visibility</td>
</tr>
<tr class="even">
<td> </td>
<td>A</td> <td>Show TweakBar, Toggle Focused Item</td>
</tr>
<tr class="odd">
<td> </td>
<td>B</td> <td>Close Focused UI, Hide TweakBar</td>
</tr>
<tr class="even">
<td> </td>
<td>DPAD Up/Down</td> <td>Move Focus to Prev/Next Item</td>
</tr>
<tr class="odd">
<td> </td>
<td>DPAD Left/Right</td> <td>Decrease/Increase Focused Item</td>
</tr>
</table>
</div>
</div>
<div class="row">
<div class="subprojmetadata">
<h3>App-Specific Controls</h3>
<p>This sample has the following app-specific controls:</p>
<table class="table table-striped small subprojcontrolstable" id="appcontrolstable">
<tr>
<th class="subprojcontrolsdevice">Device</th>
<th class="subprojcontrolsinput">Input</th>
<th class="subprojcontrolsresult">Result</th>
</tr>
<tr class="odd">
<td class="subprojcontrolsdevicekind">keyboard</td>
<td>space</td> <td>Toggle Animation</td>
</tr>
<tr class="even">
<td> </td>
<td>R</td> <td>Reset Scene</td>
</tr>
<tr class="odd">
<td> </td>
<td>, / .</td> <td>Decrease/Increase Animation State</td>
</tr>
<tr class="even">
<td class="subprojcontrolsdevicekind">gamepad</td>
<td>Y</td> <td>Toggle Animation</td>
</tr>
<tr class="odd">
<td> </td>
<td>X</td> <td>Reset Scene</td>
</tr>
<tr class="even">
<td> </td>
<td>DPAD Left/Right</td> <td>Decrease/Increase Animation State</td>
</tr>
</table>
</div>
</div>
<div class="row" id="subprojfulldoc">
<h3>Technical Details</h3>
<div id="detaileddoc">
<p>An outline for the text "This is crazy" is drawn incrementally by computing the total arc length of the path using <code>glGetPathLengthNV</code> and then setting the dash pattern with <code>glPathDashArrayNV</code> to be some percentage of that total path length. By animating the dash pattern in this way, the stroking of the path appears to animate in way to trace out the path's outline.</p>
</div>
</div>
<div class="row" id="subprojseealso">
<h3>See Also</h3>
<ul>
<li class="odd">
<!-- tbd file static refs will need to turn into an nvidia.com relative URL... -->
<span class="subprojseeone">
<a href="https://developer.nvidia.com/nv-path-rendering">
Path Rendering home page
</a>
</span></li>
<li class="even">
<!-- tbd file static refs will need to turn into an nvidia.com relative URL... -->
<span class="subprojseeone">
<a href="https://www.opengl.org/registry/specs/NV/path_rendering.txt">
NV_path_rendering OpenGL extension specification
</a>
</span></li>
</ul>
</div>
</div>
</div>
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<div class="text-center">©2016 NVIDIA Corporation.</div>
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