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A JavaScript 2D physics engine.
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<h1>vec2 Class</h1>
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<div class="foundat">
Defined in: <a href="../files/src_math_vec2.js.html#l23"><code>src/math/vec2.js:23</code></a>
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<div class="box intro">
<p>The vec2 object from glMatrix, with some extensions and some removed methods. See <a href="http://glmatrix.net">http://glmatrix.net</a>.</p>
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<h2 class="off-left">Item Index</h2>
<div class="index-section methods">
<h3>Methods</h3>
<ul class="index-list methods">
<li class="index-item method">
<a href="#method_add">add</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_centroid">centroid</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_clone">clone</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_copy">copy</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_create">create</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_crossLength">crossLength</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_crossVZ">crossVZ</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_crossZV">crossZV</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_dist">dist</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_distance">distance</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_div">div</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_divide">divide</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_dot">dot</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_fromValues">fromValues</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_getLineSegmentsIntersection">getLineSegmentsIntersection</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_getLineSegmentsIntersectionFraction">getLineSegmentsIntersectionFraction</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_len">len</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_length">length</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_lerp">lerp</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_mul">mul</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_multiply">multiply</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_negate">negate</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_normalize">normalize</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_reflect">reflect</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_rotate">rotate</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_rotate90cw">rotate90cw</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_scale">scale</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_set">set</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_sqrDist">sqrDist</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_sqrLen">sqrLen</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_squaredDistance">squaredDistance</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_squaredLength">squaredLength</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_str">str</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_sub">sub</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_subtract">subtract</a>
<span class="flag static">static</span>
</li>
<li class="index-item method">
<a href="#method_toGlobalFrame">toGlobalFrame</a>
</li>
<li class="index-item method">
<a href="#method_toGlobalFrame">toGlobalFrame</a>
</li>
<li class="index-item method">
<a href="#method_toLocalFrame">toLocalFrame</a>
</li>
<li class="index-item method">
<a href="#method_vectorToLocalFrame">vectorToLocalFrame</a>
</li>
</ul>
</div>
</div>
<div id="methods" class="api-class-tabpanel">
<h2 class="off-left">Methods</h2>
<div id="method_add" class="method item">
<h3 class="name"><code>add</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>b</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l249"><code>src/math/vec2.js:249</code></a>
</p>
</div>
<div class="description">
<p>Adds two vec2's</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
<p>the receiving vector</p>
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>the first operand</p>
</div>
</li>
<li class="param">
<code class="param-name">b</code>
<span class="type">Array</span>
<div class="param-description">
<p>the second operand</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>out</p>
</div>
</div>
</div>
<div id="method_centroid" class="method item">
<h3 class="name"><code>centroid</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>b</code>
</li>
<li class="arg">
<code>c</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l161"><code>src/math/vec2.js:161</code></a>
</p>
</div>
<div class="description">
<p>Compute centroid of a triangle spanned by vectors a,b,c. See <a href="http://easycalculation.com/analytical/learn-centroid.php">http://easycalculation.com/analytical/learn-centroid.php</a></p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">b</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">c</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>The out object</p>
</div>
</div>
</div>
<div id="method_clone" class="method item">
<h3 class="name"><code>clone</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>a</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l191"><code>src/math/vec2.js:191</code></a>
</p>
</div>
<div class="description">
<p>Creates a new vec2 initialized with values from an existing vector</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>vector to clone</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>a new 2D vector</p>
</div>
</div>
</div>
<div id="method_copy" class="method item">
<h3 class="name"><code>copy</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l220"><code>src/math/vec2.js:220</code></a>
</p>
</div>
<div class="description">
<p>Copy the values from one vec2 to another</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
<p>the receiving vector</p>
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>the source vector</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>out</p>
</div>
</div>
</div>
<div id="method_create" class="method item">
<h3 class="name"><code>create</code></h3>
<span class="paren">()</span>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l178"><code>src/math/vec2.js:178</code></a>
</p>
</div>
<div class="description">
<p>Creates a new, empty vec2</p>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>a new 2D vector</p>
</div>
</div>
</div>
<div id="method_crossLength" class="method item">
<h3 class="name"><code>crossLength</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>b</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Number</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l32"><code>src/math/vec2.js:32</code></a>
</p>
</div>
<div class="description">
<p>Make a cross product and only return the z component</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">b</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Number</span>:
</div>
</div>
</div>
<div id="method_crossVZ" class="method item">
<h3 class="name"><code>crossVZ</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>vec</code>
</li>
<li class="arg">
<code>zcomp</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Number</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l44"><code>src/math/vec2.js:44</code></a>
</p>
</div>
<div class="description">
<p>Cross product between a vector and the Z component of a vector</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">vec</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">zcomp</code>
<span class="type">Number</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Number</span>:
</div>
</div>
</div>
<div id="method_crossZV" class="method item">
<h3 class="name"><code>crossZV</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>zcomp</code>
</li>
<li class="arg">
<code>vec</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Number</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l59"><code>src/math/vec2.js:59</code></a>
</p>
</div>
<div class="description">
<p>Cross product between a vector and the Z component of a vector</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">zcomp</code>
<span class="type">Number</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">vec</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Number</span>:
</div>
</div>
</div>
<div id="method_dist" class="method item">
<h3 class="name"><code>dist</code></h3>
<span class="paren">()</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l359"><code>src/math/vec2.js:359</code></a>
</p>
</div>
<div class="description">
<p>Alias for vec2.distance</p>
</div>
</div>
<div id="method_distance" class="method item">
<h3 class="name"><code>distance</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>b</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Number</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l345"><code>src/math/vec2.js:345</code></a>
</p>
</div>
<div class="description">
<p>Calculates the euclidian distance between two vec2's</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>the first operand</p>
</div>
</li>
<li class="param">
<code class="param-name">b</code>
<span class="type">Array</span>
<div class="param-description">
<p>the second operand</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Number</span>:
<p>distance between a and b</p>
</div>
</div>
</div>
<div id="method_div" class="method item">
<h3 class="name"><code>div</code></h3>
<span class="paren">()</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l323"><code>src/math/vec2.js:323</code></a>
</p>
</div>
<div class="description">
<p>Alias for vec2.divide</p>
</div>
</div>
<div id="method_divide" class="method item">
<h3 class="name"><code>divide</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>b</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l308"><code>src/math/vec2.js:308</code></a>
</p>
</div>
<div class="description">
<p>Divides two vec2's</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
<p>the receiving vector</p>
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>the first operand</p>
</div>
</li>
<li class="param">
<code class="param-name">b</code>
<span class="type">Array</span>
<div class="param-description">
<p>the second operand</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>out</p>
</div>
</div>
</div>
<div id="method_dot" class="method item">
<h3 class="name"><code>dot</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>b</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Number</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l462"><code>src/math/vec2.js:462</code></a>
</p>
</div>
<div class="description">
<p>Calculates the dot product of two vec2's</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>the first operand</p>
</div>
</li>
<li class="param">
<code class="param-name">b</code>
<span class="type">Array</span>
<div class="param-description">
<p>the second operand</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Number</span>:
<p>dot product of a and b</p>
</div>
</div>
</div>
<div id="method_fromValues" class="method item">
<h3 class="name"><code>fromValues</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>x</code>
</li>
<li class="arg">
<code>y</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l205"><code>src/math/vec2.js:205</code></a>
</p>
</div>
<div class="description">
<p>Creates a new vec2 initialized with the given values</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">x</code>
<span class="type">Number</span>
<div class="param-description">
<p>X component</p>
</div>
</li>
<li class="param">
<code class="param-name">y</code>
<span class="type">Number</span>
<div class="param-description">
<p>Y component</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>a new 2D vector</p>
</div>
</div>
</div>
<div id="method_getLineSegmentsIntersection" class="method item">
<h3 class="name"><code>getLineSegmentsIntersection</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>p0</code>
</li>
<li class="arg">
<code>p1</code>
</li>
<li class="arg">
<code>p2</code>
</li>
<li class="arg">
<code>p3</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Boolean</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l516"><code>src/math/vec2.js:516</code></a>
</p>
</div>
<div class="description">
<p>Get the intersection point between two line segments.</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">p0</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">p1</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">p2</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">p3</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Boolean</span>:
<p>True if there was an intersection, otherwise false.</p>
</div>
</div>
</div>
<div id="method_getLineSegmentsIntersectionFraction" class="method item">
<h3 class="name"><code>getLineSegmentsIntersectionFraction</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>p0</code>
</li>
<li class="arg">
<code>p1</code>
</li>
<li class="arg">
<code>p2</code>
</li>
<li class="arg">
<code>p3</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Number</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l538"><code>src/math/vec2.js:538</code></a>
</p>
</div>
<div class="description">
<p>Get the intersection fraction between two line segments. If successful, the intersection is at p0 + t * (p1 - p0)</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">p0</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">p1</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">p2</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">p3</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Number</span>:
<p>A number between 0 and 1 if there was an intersection, otherwise -1.</p>
</div>
</div>
</div>
<div id="method_len" class="method item">
<h3 class="name"><code>len</code></h3>
<span class="paren">()</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l400"><code>src/math/vec2.js:400</code></a>
</p>
</div>
<div class="description">
<p>Alias for vec2.length</p>
</div>
</div>
<div id="method_length" class="method item">
<h3 class="name"><code>length</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>a</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Number</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l387"><code>src/math/vec2.js:387</code></a>
</p>
</div>
<div class="description">
<p>Calculates the length of a vec2</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>vector to calculate length of</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Number</span>:
<p>length of a</p>
</div>
</div>
</div>
<div id="method_lerp" class="method item">
<h3 class="name"><code>lerp</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>b</code>
</li>
<li class="arg">
<code>t</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l485"><code>src/math/vec2.js:485</code></a>
</p>
</div>
<div class="description">
<p>Linearly interpolate/mix two vectors.</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>First vector</p>
</div>
</li>
<li class="param">
<code class="param-name">b</code>
<span class="type">Array</span>
<div class="param-description">
<p>Second vector</p>
</div>
</li>
<li class="param">
<code class="param-name">t</code>
<span class="type">Number</span>
<div class="param-description">
<p>Lerp factor</p>
</div>
</li>
</ul>
</div>
</div>
<div id="method_mul" class="method item">
<h3 class="name"><code>mul</code></h3>
<span class="paren">()</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l301"><code>src/math/vec2.js:301</code></a>
</p>
</div>
<div class="description">
<p>Alias for vec2.multiply</p>
</div>
</div>
<div id="method_multiply" class="method item">
<h3 class="name"><code>multiply</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>b</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l286"><code>src/math/vec2.js:286</code></a>
</p>
</div>
<div class="description">
<p>Multiplies two vec2's</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
<p>the receiving vector</p>
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>the first operand</p>
</div>
</li>
<li class="param">
<code class="param-name">b</code>
<span class="type">Array</span>
<div class="param-description">
<p>the second operand</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>out</p>
</div>
</div>
</div>
<div id="method_negate" class="method item">
<h3 class="name"><code>negate</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l427"><code>src/math/vec2.js:427</code></a>
</p>
</div>
<div class="description">
<p>Negates the components of a vec2</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
<p>the receiving vector</p>
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>vector to negate</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>out</p>
</div>
</div>
</div>
<div id="method_normalize" class="method item">
<h3 class="name"><code>normalize</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l441"><code>src/math/vec2.js:441</code></a>
</p>
</div>
<div class="description">
<p>Normalize a vec2</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
<p>the receiving vector</p>
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>vector to normalize</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>out</p>
</div>
</div>
</div>
<div id="method_reflect" class="method item">
<h3 class="name"><code>reflect</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>vector</code>
</li>
<li class="arg">
<code>normal</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l502"><code>src/math/vec2.js:502</code></a>
</p>
</div>
<div class="description">
<p>Reflect a vector along a normal.</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">vector</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">normal</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
</div>
<div id="method_rotate" class="method item">
<h3 class="name"><code>rotate</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>angle</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l74"><code>src/math/vec2.js:74</code></a>
</p>
</div>
<div class="description">
<p>Rotate a vector by an angle</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">angle</code>
<span class="type">Number</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
</div>
<div id="method_rotate90cw" class="method item">
<h3 class="name"><code>rotate90cw</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>angle</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l96"><code>src/math/vec2.js:96</code></a>
</p>
</div>
<div class="description">
<p>Rotate a vector 90 degrees clockwise</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">angle</code>
<span class="type">Number</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
</div>
<div id="method_scale" class="method item">
<h3 class="name"><code>scale</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>b</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l330"><code>src/math/vec2.js:330</code></a>
</p>
</div>
<div class="description">
<p>Scales a vec2 by a scalar number</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
<p>the receiving vector</p>
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>the vector to scale</p>
</div>
</li>
<li class="param">
<code class="param-name">b</code>
<span class="type">Number</span>
<div class="param-description">
<p>amount to scale the vector by</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>out</p>
</div>
</div>
</div>
<div id="method_set" class="method item">
<h3 class="name"><code>set</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>x</code>
</li>
<li class="arg">
<code>y</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l234"><code>src/math/vec2.js:234</code></a>
</p>
</div>
<div class="description">
<p>Set the components of a vec2 to the given values</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
<p>the receiving vector</p>
</div>
</li>
<li class="param">
<code class="param-name">x</code>
<span class="type">Number</span>
<div class="param-description">
<p>X component</p>
</div>
</li>
<li class="param">
<code class="param-name">y</code>
<span class="type">Number</span>
<div class="param-description">
<p>Y component</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>out</p>
</div>
</div>
</div>
<div id="method_sqrDist" class="method item">
<h3 class="name"><code>sqrDist</code></h3>
<span class="paren">()</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l380"><code>src/math/vec2.js:380</code></a>
</p>
</div>
<div class="description">
<p>Alias for vec2.squaredDistance</p>
</div>
</div>
<div id="method_sqrLen" class="method item">
<h3 class="name"><code>sqrLen</code></h3>
<span class="paren">()</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l420"><code>src/math/vec2.js:420</code></a>
</p>
</div>
<div class="description">
<p>Alias for vec2.squaredLength</p>
</div>
</div>
<div id="method_squaredDistance" class="method item">
<h3 class="name"><code>squaredDistance</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>b</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Number</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l366"><code>src/math/vec2.js:366</code></a>
</p>
</div>
<div class="description">
<p>Calculates the squared euclidian distance between two vec2's</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>the first operand</p>
</div>
</li>
<li class="param">
<code class="param-name">b</code>
<span class="type">Array</span>
<div class="param-description">
<p>the second operand</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Number</span>:
<p>squared distance between a and b</p>
</div>
</div>
</div>
<div id="method_squaredLength" class="method item">
<h3 class="name"><code>squaredLength</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>a</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Number</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l407"><code>src/math/vec2.js:407</code></a>
</p>
</div>
<div class="description">
<p>Calculates the squared length of a vec2</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>vector to calculate squared length of</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Number</span>:
<p>squared length of a</p>
</div>
</div>
</div>
<div id="method_str" class="method item">
<h3 class="name"><code>str</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>vec</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">String</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l474"><code>src/math/vec2.js:474</code></a>
</p>
</div>
<div class="description">
<p>Returns a string representation of a vector</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">vec</code>
<span class="type">Array</span>
<div class="param-description">
<p>vector to represent as a string</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">String</span>:
<p>string representation of the vector</p>
</div>
</div>
</div>
<div id="method_sub" class="method item">
<h3 class="name"><code>sub</code></h3>
<span class="paren">()</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l279"><code>src/math/vec2.js:279</code></a>
</p>
</div>
<div class="description">
<p>Alias for vec2.subtract</p>
</div>
</div>
<div id="method_subtract" class="method item">
<h3 class="name"><code>subtract</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>a</code>
</li>
<li class="arg">
<code>b</code>
</li>
</ul><span class="paren">)</span>
</div>
<span class="returns-inline">
<span class="type">Array</span>
</span>
<span class="flag static">static</span>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l264"><code>src/math/vec2.js:264</code></a>
</p>
</div>
<div class="description">
<p>Subtracts two vec2's</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
<p>the receiving vector</p>
</div>
</li>
<li class="param">
<code class="param-name">a</code>
<span class="type">Array</span>
<div class="param-description">
<p>the first operand</p>
</div>
</li>
<li class="param">
<code class="param-name">b</code>
<span class="type">Array</span>
<div class="param-description">
<p>the second operand</p>
</div>
</li>
</ul>
</div>
<div class="returns">
<h4>Returns:</h4>
<div class="returns-description">
<span class="type">Array</span>:
<p>out</p>
</div>
</div>
</div>
<div id="method_toGlobalFrame" class="method item">
<h3 class="name"><code>toGlobalFrame</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>localPoint</code>
</li>
<li class="arg">
<code>framePosition</code>
</li>
<li class="arg">
<code>frameAngle</code>
</li>
</ul><span class="paren">)</span>
</div>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l125"><code>src/math/vec2.js:125</code></a>
</p>
</div>
<div class="description">
<p>Transform a point position to global frame.</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">localPoint</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">framePosition</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">frameAngle</code>
<span class="type">Number</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
</div>
<div id="method_toGlobalFrame" class="method item">
<h3 class="name"><code>toGlobalFrame</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>localVector</code>
</li>
<li class="arg">
<code>frameAngle</code>
</li>
</ul><span class="paren">)</span>
</div>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l150"><code>src/math/vec2.js:150</code></a>
</p>
</div>
<div class="description">
<p>Transform a point position to global frame.</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">localVector</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">frameAngle</code>
<span class="type">Number</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
</div>
<div id="method_toLocalFrame" class="method item">
<h3 class="name"><code>toLocalFrame</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>worldPoint</code>
</li>
<li class="arg">
<code>framePosition</code>
</li>
<li class="arg">
<code>frameAngle</code>
</li>
</ul><span class="paren">)</span>
</div>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l111"><code>src/math/vec2.js:111</code></a>
</p>
</div>
<div class="description">
<p>Transform a point position to local frame.</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">worldPoint</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">framePosition</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">frameAngle</code>
<span class="type">Number</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
</div>
<div id="method_vectorToLocalFrame" class="method item">
<h3 class="name"><code>vectorToLocalFrame</code></h3>
<div class="args">
<span class="paren">(</span><ul class="args-list inline commas">
<li class="arg">
<code>out</code>
</li>
<li class="arg">
<code>worldVector</code>
</li>
<li class="arg">
<code>frameAngle</code>
</li>
</ul><span class="paren">)</span>
</div>
<div class="meta">
<p>
Defined in
<a href="../files/src_math_vec2.js.html#l139"><code>src/math/vec2.js:139</code></a>
</p>
</div>
<div class="description">
<p>Transform a vector to local frame.</p>
</div>
<div class="params">
<h4>Parameters:</h4>
<ul class="params-list">
<li class="param">
<code class="param-name">out</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">worldVector</code>
<span class="type">Array</span>
<div class="param-description">
</div>
</li>
<li class="param">
<code class="param-name">frameAngle</code>
<span class="type">Number</span>
<div class="param-description">
</div>
</li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
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