p2s

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>DistanceConstraint - p2.js</title> <link rel="stylesheet" href="http://yui.yahooapis.com/3.9.1/build/cssgrids/cssgrids-min.css"> <link rel="stylesheet" href="../assets/vendor/prettify/prettify-min.css"> <link rel="stylesheet" href="../assets/css/main.css" id="site_styles"> <link rel="icon" href="../assets/favicon.ico"> <script src="http://yui.yahooapis.com/combo?3.9.1/build/yui/yui-min.js"></script> </head> <body class="yui3-skin-sam"> <div id="doc"> <div id="hd" class="yui3-g header"> <div class="yui3-u-3-4"> <h1><img src="../assets/css/logo.png" title="p2.js" width="117" height="52"></h1> </div> <div class="yui3-u-1-4 version"> <em>API Docs for: 0.7.1</em> </div> </div> <div id="bd" class="yui3-g"> <div class="yui3-u-1-4"> <div id="docs-sidebar" class="sidebar apidocs"> <div id="api-list"> <h2 class="off-left">APIs</h2> <div id="api-tabview" class="tabview"> <ul class="tabs"> <li><a href="#api-classes">Classes</a></li> <li><a href="#api-modules">Modules</a></li> </ul> <div id="api-tabview-filter"> <input type="search" id="api-filter" placeholder="Type to filter APIs"> </div> <div id="api-tabview-panel"> <ul id="api-classes" class="apis classes"> <li><a href="../classes/AABB.html">AABB</a></li> <li><a href="../classes/AngleLockEquation.html">AngleLockEquation</a></li> <li><a href="../classes/Body.html">Body</a></li> <li><a href="../classes/Box.html">Box</a></li> <li><a href="../classes/Broadphase.html">Broadphase</a></li> <li><a href="../classes/Capsule.html">Capsule</a></li> <li><a href="../classes/Circle.html">Circle</a></li> <li><a href="../classes/Constraint.html">Constraint</a></li> <li><a href="../classes/ContactEquation.html">ContactEquation</a></li> <li><a href="../classes/ContactMaterial.html">ContactMaterial</a></li> <li><a href="../classes/Convex.html">Convex</a></li> <li><a href="../classes/DistanceConstraint.html">DistanceConstraint</a></li> <li><a href="../classes/Equation.html">Equation</a></li> <li><a href="../classes/EventEmitter.html">EventEmitter</a></li> <li><a href="../classes/FrictionEquation.html">FrictionEquation</a></li> <li><a href="../classes/GearConstraint.html">GearConstraint</a></li> <li><a href="../classes/GSSolver.html">GSSolver</a></li> <li><a href="../classes/Heightfield.html">Heightfield</a></li> <li><a href="../classes/Island.html">Island</a></li> <li><a href="../classes/IslandManager.html">IslandManager</a></li> <li><a href="../classes/IslandNode.html">IslandNode</a></li> <li><a href="../classes/Line.html">Line</a></li> <li><a href="../classes/LinearSpring.html">LinearSpring</a></li> <li><a href="../classes/LockConstraint.html">LockConstraint</a></li> <li><a href="../classes/Material.html">Material</a></li> <li><a href="../classes/NaiveBroadphase.html">NaiveBroadphase</a></li> <li><a href="../classes/Narrowphase.html">Narrowphase</a></li> <li><a href="../classes/Object pooling utility..html">Object pooling utility.</a></li> <li><a href="../classes/OverlapKeeper.html">OverlapKeeper</a></li> <li><a href="../classes/OverlapKeeperRecord.html">OverlapKeeperRecord</a></li> <li><a href="../classes/Particle.html">Particle</a></li> <li><a href="../classes/Plane.html">Plane</a></li> <li><a href="../classes/PrismaticConstraint.html">PrismaticConstraint</a></li> <li><a href="../classes/Ray.html">Ray</a></li> <li><a href="../classes/RaycastResult.html">RaycastResult</a></li> <li><a href="../classes/RevoluteConstraint.html">RevoluteConstraint</a></li> <li><a href="../classes/RotationalLockEquation.html">RotationalLockEquation</a></li> <li><a href="../classes/.html"></a></li> <li><a href="../classes/RotationalSpring.html">RotationalSpring</a></li> <li><a href="../classes/RotationalVelocityEquation.html">RotationalVelocityEquation</a></li> <li><a href="../classes/SAPBroadphase.html">SAPBroadphase</a></li> <li><a href="../classes/Shape.html">Shape</a></li> <li><a href="../classes/Solver.html">Solver</a></li> <li><a href="../classes/Spring.html">Spring</a></li> <li><a href="../classes/TopDownVehicle.html">TopDownVehicle</a></li> <li><a href="../classes/TupleDictionary.html">TupleDictionary</a></li> <li><a href="../classes/Utils.html">Utils</a></li> <li><a href="../classes/vec2.html">vec2</a></li> <li><a href="../classes/WheelConstraint.html">WheelConstraint</a></li> <li><a href="../classes/World.html">World</a></li> </ul> <ul id="api-modules" class="apis modules"> </ul> </div> </div> </div> </div> </div> <div class="yui3-u-3-4"> <div id="api-options"> Show: <label for="api-show-inherited"> <input type="checkbox" id="api-show-inherited" checked> Inherited </label> <label for="api-show-protected"> <input type="checkbox" id="api-show-protected"> Protected </label> <label for="api-show-private"> <input type="checkbox" id="api-show-private"> Private </label> <label for="api-show-deprecated"> <input type="checkbox" id="api-show-deprecated"> Deprecated </label> </div> <div class="apidocs"> <div id="docs-main"> <div class="content"> <h1>DistanceConstraint Class</h1> <div class="box meta"> <div class="extends"> Extends <a href="../classes/Constraint.html" class="crosslink">Constraint</a> </div> <div class="foundat"> Defined in: <a href="../files/src_constraints_DistanceConstraint.js.html#l8"><code>src/constraints/DistanceConstraint.js:8</code></a> </div> </div> <div class="box intro"> <p>Constraint that tries to keep the distance between two bodies constant.</p> </div> <div class="constructor"> <h2>Constructor</h2> <div id="method_DistanceConstraint" class="method item"> <h3 class="name"><code>DistanceConstraint</code></h3> <div class="args"> <span class="paren">(</span><ul class="args-list inline commas"> <li class="arg"> <code>bodyA</code> </li> <li class="arg"> <code>bodyB</code> </li> <li class="arg"> <code class="optional">[options]</code> </li> </ul><span class="paren">)</span> </div> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l8"><code>src/constraints/DistanceConstraint.js:8</code></a> </p> </div> <div class="description"> </div> <div class="params"> <h4>Parameters:</h4> <ul class="params-list"> <li class="param"> <code class="param-name">bodyA</code> <span class="type"><a href="../classes/Body.html" class="crosslink">Body</a></span> <div class="param-description"> </div> </li> <li class="param"> <code class="param-name">bodyB</code> <span class="type"><a href="../classes/Body.html" class="crosslink">Body</a></span> <div class="param-description"> </div> </li> <li class="param"> <code class="param-name optional">[options]</code> <span class="type">Object</span> <span class="flag optional" title="This parameter is optional.">optional</span> <div class="param-description"> </div> <ul class="params-list"> <li class="param"> <code class="param-name optional">[distance]</code> <span class="type">Number</span> <span class="flag optional" title="This parameter is optional.">optional</span> <div class="param-description"> <p>The distance to keep between the anchor points. Defaults to the current distance between the bodies.</p> </div> </li> <li class="param"> <code class="param-name optional">[localAnchorA] The anchor point for bodyA, defined locally in bodyA frame. Defaults to [0,0]</code> <span class="type">Array</span> <span class="flag optional" title="This parameter is optional.">optional</span> <div class="param-description"> <p>.</p> </div> </li> <li class="param"> <code class="param-name optional">[localAnchorB] The anchor point for bodyB, defined locally in bodyB frame. Defaults to [0,0]</code> <span class="type">Array</span> <span class="flag optional" title="This parameter is optional.">optional</span> <div class="param-description"> <p>.</p> </div> </li> <li class="param"> <code class="param-name optional">[maxForce=Number.MAX_VALUE]</code> <span class="type">Object</span> <span class="flag optional" title="This parameter is optional.">optional</span> <div class="param-description"> <p>Maximum force to apply.</p> </div> </li> </ul> </li> </ul> </div> <div class="example"> <h4>Example:</h4> <div class="example-content"> <pre class="code prettyprint"><code>// If distance is not given as an option, then the current distance between the bodies is used. // In this example, the bodies will be constrained to have a distance of 2 between their centers. var bodyA = new Body({ mass: 1, position: [-1, 0] }); var bodyB = new Body({ mass: 1, position: [1, 0] }); var constraint = new DistanceConstraint(bodyA, bodyB); world.addConstraint(constraint); </code></pre><pre class="code prettyprint"><code>// Manually set the distance and anchors var constraint = new DistanceConstraint(bodyA, bodyB, { distance: 1, // Distance to keep between the points localAnchorA: [1, 0], // Point on bodyA localAnchorB: [-1, 0] // Point on bodyB }); world.addConstraint(constraint); </code></pre> </div> </div> </div> </div> <div id="classdocs" class="tabview"> <ul class="api-class-tabs"> <li class="api-class-tab index"><a href="#index">Index</a></li> <li class="api-class-tab methods"><a href="#methods">Methods</a></li> <li class="api-class-tab properties"><a href="#properties">Properties</a></li> </ul> <div> <div id="index" class="api-class-tabpanel index"> <h2 class="off-left">Item Index</h2> <div class="index-section methods"> <h3>Methods</h3> <ul class="index-list methods extends"> <li class="index-item method"> <a href="#method_getMaxForce">getMaxForce</a> </li> <li class="index-item method"> <a href="#method_setMaxForce">setMaxForce</a> </li> <li class="index-item method inherited"> <a href="#method_setRelaxation">setRelaxation</a> </li> <li class="index-item method inherited"> <a href="#method_setStiffness">setStiffness</a> </li> <li class="index-item method inherited"> <a href="#method_update">update</a> </li> </ul> </div> <div class="index-section properties"> <h3>Properties</h3> <ul class="index-list properties extends"> <li class="index-item property inherited"> <a href="#property_bodyA">bodyA</a> </li> <li class="index-item property inherited"> <a href="#property_bodyB">bodyB</a> </li> <li class="index-item property inherited"> <a href="#property_collideConnected">collideConnected</a> </li> <li class="index-item property"> <a href="#property_distance">distance</a> </li> <li class="index-item property inherited"> <a href="#property_equations">equations</a> </li> <li class="index-item property"> <a href="#property_localAnchorA">localAnchorA</a> </li> <li class="index-item property"> <a href="#property_localAnchorB">localAnchorB</a> </li> <li class="index-item property"> <a href="#property_lowerLimit">lowerLimit</a> </li> <li class="index-item property"> <a href="#property_lowerLimitEnabled">lowerLimitEnabled</a> </li> <li class="index-item property"> <a href="#property_maxForce">maxForce</a> </li> <li class="index-item property"> <a href="#property_position">position</a> </li> <li class="index-item property inherited"> <a href="#property_type">type</a> </li> <li class="index-item property"> <a href="#property_upperLimit">upperLimit</a> </li> <li class="index-item property"> <a href="#property_upperLimitEnabled">upperLimitEnabled</a> </li> </ul> </div> </div> <div id="methods" class="api-class-tabpanel"> <h2 class="off-left">Methods</h2> <div id="method_getMaxForce" class="method item"> <h3 class="name"><code>getMaxForce</code></h3> <span class="paren">()</span> <span class="returns-inline"> <span class="type">Number</span> </span> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l260"><code>src/constraints/DistanceConstraint.js:260</code></a> </p> </div> <div class="description"> <p>Get the max force</p> </div> <div class="returns"> <h4>Returns:</h4> <div class="returns-description"> <span class="type">Number</span>: </div> </div> </div> <div id="method_setMaxForce" class="method item"> <h3 class="name"><code>setMaxForce</code></h3> <div class="args"> <span class="paren">(</span><ul class="args-list inline commas"> <li class="arg"> <code>maxForce</code> </li> </ul><span class="paren">)</span> </div> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l249"><code>src/constraints/DistanceConstraint.js:249</code></a> </p> </div> <div class="description"> <p>Set the max force to be used</p> </div> <div class="params"> <h4>Parameters:</h4> <ul class="params-list"> <li class="param"> <code class="param-name">maxForce</code> <span class="type">Number</span> <div class="param-description"> </div> </li> </ul> </div> </div> <div id="method_setRelaxation" class="method item inherited"> <h3 class="name"><code>setRelaxation</code></h3> <div class="args"> <span class="paren">(</span><ul class="args-list inline commas"> <li class="arg"> <code>relaxation</code> </li> </ul><span class="paren">)</span> </div> <div class="meta"> <p>Inherited from <a href="../classes/Constraint.html#method_setRelaxation">Constraint</a>: <a href="../files/src_constraints_Constraint.js.html#l123"><code>src/constraints/Constraint.js:123</code></a> </p> </div> <div class="description"> <p>Set relaxation for this constraint.</p> </div> <div class="params"> <h4>Parameters:</h4> <ul class="params-list"> <li class="param"> <code class="param-name">relaxation</code> <span class="type">Number</span> <div class="param-description"> </div> </li> </ul> </div> </div> <div id="method_setStiffness" class="method item inherited"> <h3 class="name"><code>setStiffness</code></h3> <div class="args"> <span class="paren">(</span><ul class="args-list inline commas"> <li class="arg"> <code>stiffness</code> </li> </ul><span class="paren">)</span> </div> <div class="meta"> <p>Inherited from <a href="../classes/Constraint.html#method_setStiffness">Constraint</a>: <a href="../files/src_constraints_Constraint.js.html#l109"><code>src/constraints/Constraint.js:109</code></a> </p> </div> <div class="description"> <p>Set stiffness for this constraint.</p> </div> <div class="params"> <h4>Parameters:</h4> <ul class="params-list"> <li class="param"> <code class="param-name">stiffness</code> <span class="type">Number</span> <div class="param-description"> </div> </li> </ul> </div> </div> <div id="method_update" class="method item"> <h3 class="name"><code>update</code></h3> <span class="paren">()</span> <div class="meta"> <p>Inherited from <a href="../classes/Constraint.html#method_update"> Constraint </a> but overwritten in <a href="../files/src_constraints_DistanceConstraint.js.html#l180"><code>src/constraints/DistanceConstraint.js:180</code></a> </p> </div> <div class="description"> <p>Update the constraint equations. Should be done if any of the bodies changed position, before solving.</p> </div> </div> </div> <div id="properties" class="api-class-tabpanel"> <h2 class="off-left">Properties</h2> <div id="property_bodyA" class="property item inherited"> <h3 class="name"><code>bodyA</code></h3> <span class="type"><a href="../classes/Body.html" class="crosslink">Body</a></span> <div class="meta"> <p>Inherited from <a href="../classes/Constraint.html#property_bodyA">Constraint</a>: <a href="../files/src_constraints_Constraint.js.html#l38"><code>src/constraints/Constraint.js:38</code></a> </p> </div> <div class="description"> <p>First body participating in the constraint.</p> </div> </div> <div id="property_bodyB" class="property item inherited"> <h3 class="name"><code>bodyB</code></h3> <span class="type"><a href="../classes/Body.html" class="crosslink">Body</a></span> <div class="meta"> <p>Inherited from <a href="../classes/Constraint.html#property_bodyB">Constraint</a>: <a href="../files/src_constraints_Constraint.js.html#l45"><code>src/constraints/Constraint.js:45</code></a> </p> </div> <div class="description"> <p>Second body participating in the constraint.</p> </div> </div> <div id="property_collideConnected" class="property item inherited"> <h3 class="name"><code>collideConnected</code></h3> <span class="type">Boolean</span> <div class="meta"> <p>Inherited from <a href="../classes/Constraint.html#property_collideConnected">Constraint</a>: <a href="../files/src_constraints_Constraint.js.html#l52"><code>src/constraints/Constraint.js:52</code></a> </p> </div> <div class="description"> <p>Set to true if you want the connected bodies to collide.</p> </div> <p><strong>Default:</strong> true</p> </div> <div id="property_distance" class="property item"> <h3 class="name"><code>distance</code></h3> <span class="type">Number</span> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l65"><code>src/constraints/DistanceConstraint.js:65</code></a> </p> </div> <div class="description"> <p>The distance to keep.</p> </div> </div> <div id="property_equations" class="property item inherited"> <h3 class="name"><code>equations</code></h3> <span class="type">Array</span> <div class="meta"> <p>Inherited from <a href="../classes/Constraint.html#property_equations">Constraint</a>: <a href="../files/src_constraints_Constraint.js.html#l30"><code>src/constraints/Constraint.js:30</code></a> </p> </div> <div class="description"> <p>Equations to be solved in this constraint</p> </div> </div> <div id="property_localAnchorA" class="property item"> <h3 class="name"><code>localAnchorA</code></h3> <span class="type">Array</span> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l48"><code>src/constraints/DistanceConstraint.js:48</code></a> </p> </div> <div class="description"> <p>Local anchor in body A.</p> </div> </div> <div id="property_localAnchorB" class="property item"> <h3 class="name"><code>localAnchorB</code></h3> <span class="type">Array</span> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l55"><code>src/constraints/DistanceConstraint.js:55</code></a> </p> </div> <div class="description"> <p>Local anchor in body B.</p> </div> </div> <div id="property_lowerLimit" class="property item"> <h3 class="name"><code>lowerLimit</code></h3> <span class="type">Number</span> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l165"><code>src/constraints/DistanceConstraint.js:165</code></a> </p> </div> <div class="description"> <p>The lower constraint limit.</p> </div> </div> <div id="property_lowerLimitEnabled" class="property item"> <h3 class="name"><code>lowerLimitEnabled</code></h3> <span class="type">Boolean</span> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l159"><code>src/constraints/DistanceConstraint.js:159</code></a> </p> </div> <div class="description"> <p>If the lower limit is enabled or not.</p> </div> </div> <div id="property_maxForce" class="property item"> <h3 class="name"><code>maxForce</code></h3> <span class="type">Number</span> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l101"><code>src/constraints/DistanceConstraint.js:101</code></a> </p> </div> <div class="description"> <p>Max force to apply.</p> </div> </div> <div id="property_position" class="property item"> <h3 class="name"><code>position</code></h3> <span class="type">Number</span> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l171"><code>src/constraints/DistanceConstraint.js:171</code></a> </p> </div> <div class="description"> <p>Current constraint position. This is equal to the current distance between the world anchor points.</p> </div> </div> <div id="property_type" class="property item inherited"> <h3 class="name"><code>type</code></h3> <span class="type">Number</span> <div class="meta"> <p>Inherited from <a href="../classes/Constraint.html#property_type">Constraint</a>: <a href="../files/src_constraints_Constraint.js.html#l19"><code>src/constraints/Constraint.js:19</code></a> </p> </div> <div class="description"> <p>The type of constraint. May be one of Constraint.DISTANCE, Constraint.GEAR, Constraint.LOCK, Constraint.PRISMATIC or Constraint.REVOLUTE.</p> </div> </div> <div id="property_upperLimit" class="property item"> <h3 class="name"><code>upperLimit</code></h3> <span class="type">Number</span> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l153"><code>src/constraints/DistanceConstraint.js:153</code></a> </p> </div> <div class="description"> <p>The upper constraint limit.</p> </div> </div> <div id="property_upperLimitEnabled" class="property item"> <h3 class="name"><code>upperLimitEnabled</code></h3> <span class="type">Boolean</span> <div class="meta"> <p> Defined in <a href="../files/src_constraints_DistanceConstraint.js.html#l147"><code>src/constraints/DistanceConstraint.js:147</code></a> </p> </div> <div class="description"> <p>If the upper limit is enabled or not.</p> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> <script src="../assets/vendor/prettify/prettify-min.js"></script> <script>prettyPrint();</script> <script src="../assets/js/yui-prettify.js"></script> <script src="../assets/../api.js"></script> <script src="../assets/js/api-filter.js"></script> <script src="../assets/js/api-list.js"></script> <script src="../assets/js/api-search.js"></script> <script src="../assets/js/apidocs.js"></script> </body> </html>