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<!DOCTYPE html>
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Class: Array — SketchUp Ruby API Documentation
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<span class="title">Array</span>
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<div id="content"><h1>Class: Array
</h1>
<div class="box_info">
<dl>
<dt>Inherits:</dt>
<dd>
<span class="inheritName">Object</span>
<ul class="fullTree">
<li>Object</li>
<li class="next">Array</li>
</ul>
<a href="#" class="inheritanceTree">show all</a>
</dd>
</dl>
</div>
<h2>Overview</h2><div class="docstring">
<div class="discussion">
<p>The SketchUp Array class adds additional methods to the standard Ruby Array class. Specifically, it contains methods allowing an array to behave just as a <span class='object_link'><a href="Geom/Vector3d.html" title="Geom::Vector3d (class)">Geom::Vector3d</a></span> or <span class='object_link'><a href="Geom/Point3d.html" title="Geom::Point3d (class)">Geom::Point3d</a></span> object (which can be thought of as arrays of 3 coordinate values). Therefore, you can use the Array class in place of a <span class='object_link'><a href="Geom/Point3d.html" title="Geom::Point3d (class)">Geom::Point3d</a></span> or <span class='object_link'><a href="Geom/Vector3d.html" title="Geom::Vector3d (class)">Geom::Vector3d</a></span> as a way to pass coordinate values.</p>
</div>
</div>
<div class="tags">
<div class="examples">
<p class="tag_title">Examples:</p>
<pre class="example code"><code><span class='comment'># An array of 3 values can represent a 1" long vector pointing straight
</span><span class='comment'># up in the z-direction.
</span><span class='id identifier rubyid_array'>array</span> <span class='op'>=</span> <span class='lbracket'>[</span><span class='int'>0</span><span class='comma'>,</span> <span class='int'>0</span><span class='comma'>,</span> <span class='int'>1</span><span class='rbracket'>]</span>
<span class='comment'># An array of 3 values can also represent a point 1" above the origin in
</span><span class='comment'># the z direction. (Note that this is the exact same array.)
</span><span class='id identifier rubyid_array'>array</span> <span class='op'>=</span> <span class='lbracket'>[</span><span class='int'>0</span><span class='comma'>,</span> <span class='int'>0</span><span class='comma'>,</span> <span class='int'>1</span><span class='rbracket'>]</span>
<span class='comment'># How it is interpreted is based on context. For example, this code will
</span><span class='comment'># create a construction point at position 0, 0, 1, since in this context
</span><span class='comment'># a Point3d is expected.
</span><span class='id identifier rubyid_entities'>entities</span> <span class='op'>=</span> <span class='const'><span class='object_link'><a href="Sketchup.html" title="Sketchup (module)">Sketchup</a></span></span><span class='period'>.</span><span class='id identifier rubyid_active_model'><span class='object_link'><a href="Sketchup.html#active_model-class_method" title="Sketchup.active_model (method)">active_model</a></span></span><span class='period'>.</span><span class='id identifier rubyid_entities'><span class='object_link'><a href="Sketchup/Model.html#entities-instance_method" title="Sketchup::Model#entities (method)">entities</a></span></span>
<span class='id identifier rubyid_construction_point'>construction_point</span> <span class='op'>=</span> <span class='id identifier rubyid_entities'>entities</span><span class='period'>.</span><span class='id identifier rubyid_add_cpoint'>add_cpoint</span><span class='lparen'>(</span><span class='id identifier rubyid_array'>array</span><span class='rparen'>)</span>
<span class='comment'># Whereas this will move our construction point 1" upward, since in this
</span><span class='comment'># context a Vector3d is expected.
</span><span class='id identifier rubyid_transformation'>transformation</span> <span class='op'>=</span> <span class='const'><span class='object_link'><a href="Geom.html" title="Geom (module)">Geom</a></span></span><span class='op'>::</span><span class='const'><span class='object_link'><a href="Geom/Transformation.html" title="Geom::Transformation (class)">Transformation</a></span></span><span class='period'>.</span><span class='id identifier rubyid_new'><span class='object_link'><a href="Geom/Transformation.html#initialize-instance_method" title="Geom::Transformation#initialize (method)">new</a></span></span><span class='lparen'>(</span><span class='id identifier rubyid_array'>array</span><span class='rparen'>)</span>
<span class='id identifier rubyid_entities'>entities</span><span class='period'>.</span><span class='id identifier rubyid_transform_entities'>transform_entities</span><span class='lparen'>(</span><span class='id identifier rubyid_transformation'>transformation</span><span class='comma'>,</span> <span class='id identifier rubyid_construction_point'>construction_point</span><span class='rparen'>)</span></code></pre>
</div>
<p class="tag_title">Version:</p>
<ul class="version">
<li>
<div class='inline'>
<p>SketchUp 6.0</p>
</div>
</li>
</ul>
</div>
<h2>
Instance Method Summary
<a
id="instance_method_summary"
href="#instance_method_summary"
title="Permalink">#</a>
<small><a href="#" class="summary_toggle">collapse</a></small>
</h2>
<ul class="summary">
<li class="public ">
<span class="summary_signature">
<a href="#cross-instance_method" title="#cross (instance method)">#<strong>cross</strong>(vector) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#cross-instance_method" title="Array#cross (method)">#cross</a></span> method is used to compute the cross product between two vectors.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#distance-instance_method" title="#distance (instance method)">#<strong>distance</strong>(point) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#distance-instance_method" title="Array#distance (method)">#distance</a></span> method is used to compute the distance between two points.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#distance_to_line-instance_method" title="#distance_to_line (instance method)">#<strong>distance_to_line</strong>(*args) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#distance_to_line-instance_method" title="Array#distance_to_line (method)">#distance_to_line</a></span> method is used to compute the distance from a <span class='object_link'><a href="Geom/Point3d.html" title="Geom::Point3d (class)">Geom::Point3d</a></span> object to a line.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#distance_to_plane-instance_method" title="#distance_to_plane (instance method)">#<strong>distance_to_plane</strong>(*args) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#distance_to_plane-instance_method" title="Array#distance_to_plane (method)">#distance_to_plane</a></span> method is used to compute the distance from a <span class='object_link'><a href="Geom/Point3d.html" title="Geom::Point3d (class)">Geom::Point3d</a></span> object to a plane.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#dot-instance_method" title="#dot (instance method)">#<strong>dot</strong>(vector) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#dot-instance_method" title="Array#dot (method)">#dot</a></span> method is used to compute the dot product between two vectors.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#normalize-instance_method" title="#normalize (instance method)">#<strong>normalize</strong> ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#normalize-instance_method" title="Array#normalize (method)">#normalize</a></span> method is used to normalize a vector (setting its length to 1).</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#normalize!-instance_method" title="#normalize! (instance method)">#<strong>normalize!</strong> ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#normalize!-instance_method" title="Array#normalize! (method)">#normalize!</a></span> method is used to normalize a vector in place (setting its length to 1).</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#offset-instance_method" title="#offset (instance method)">#<strong>offset</strong>(*args) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#offset-instance_method" title="Array#offset (method)">#offset</a></span> method is used to offset a point by a vector.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#offset!-instance_method" title="#offset! (instance method)">#<strong>offset!</strong>(*args) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#offset!-instance_method" title="Array#offset! (method)">#offset!</a></span> method is used to offset a point by a vector.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#on_line%3F-instance_method" title="#on_line? (instance method)">#<strong>on_line?</strong>(*args) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#on_line%3F-instance_method" title="Array#on_line? (method)">#on_line?</a></span> method is used to determine if a <span class='object_link'><a href="Geom/Point3d.html" title="Geom::Point3d (class)">Geom::Point3d</a></span> object is on a line.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#on_plane%3F-instance_method" title="#on_plane? (instance method)">#<strong>on_plane?</strong>(*args) ⇒ Boolean </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#on_plane%3F-instance_method" title="Array#on_plane? (method)">#on_plane?</a></span> method is used to determine if a <span class='object_link'><a href="Geom/Point3d.html" title="Geom::Point3d (class)">Geom::Point3d</a></span> object is on a plane (to within SketchUp's standard floating point tolerance).</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#project_to_line-instance_method" title="#project_to_line (instance method)">#<strong>project_to_line</strong>(*args) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#project_to_line-instance_method" title="Array#project_to_line (method)">#project_to_line</a></span> method is used to retrieve the projection of a <span class='object_link'><a href="Geom/Point3d.html" title="Geom::Point3d (class)">Geom::Point3d</a></span> object onto a line.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#project_to_plane-instance_method" title="#project_to_plane (instance method)">#<strong>project_to_plane</strong>(*args) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#project_to_plane-instance_method" title="Array#project_to_plane (method)">#project_to_plane</a></span> method retrieves the projection of a <span class='object_link'><a href="Geom/Point3d.html" title="Geom::Point3d (class)">Geom::Point3d</a></span> onto a plane.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#transform-instance_method" title="#transform (instance method)">#<strong>transform</strong>(transform) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#transform-instance_method" title="Array#transform (method)">#transform</a></span> method is used to apply a <span class='object_link'><a href="Geom/Transformation.html" title="Geom::Transformation (class)">Geom::Transformation</a></span> or <span class='object_link'><a href="Geom/Transformation2d.html" title="Geom::Transformation2d (class)">Geom::Transformation2d</a></span> object to a <span class='object_link'><a href="Geom/Point3d.html" title="Geom::Point3d (class)">Geom::Point3d</a></span> or <span class='object_link'><a href="Geom/Point2d.html" title="Geom::Point2d (class)">Geom::Point2d</a></span> object defined by an <span class='object_link'><a href="" title="Array (class)">Array</a></span> object.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#transform!-instance_method" title="#transform! (instance method)">#<strong>transform!</strong>(transform) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#transform!-instance_method" title="Array#transform! (method)">#transform!</a></span> method is used to apply a <span class='object_link'><a href="Geom/Transformation.html" title="Geom::Transformation (class)">Geom::Transformation</a></span> object to a <span class='object_link'><a href="Geom/Point3d.html" title="Geom::Point3d (class)">Geom::Point3d</a></span> object defined by an <span class='object_link'><a href="" title="Array (class)">Array</a></span> object.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#vector_to-instance_method" title="#vector_to (instance method)">#<strong>vector_to</strong>(point) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#vector_to-instance_method" title="Array#vector_to (method)">#vector_to</a></span> method is used to create an array as a vector from one point to a second point.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#x-instance_method" title="#x (instance method)">#<strong>x</strong> ⇒ Object<sup>?</sup> </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#x-instance_method" title="Array#x (method)">#x</a></span> method retrieves the x coordinate.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#x=-instance_method" title="#x= (instance method)">#<strong>x=</strong>(x) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#x=-instance_method" title="Array#x= (method)">#x=</a></span> method sets the x coordinate.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#y-instance_method" title="#y (instance method)">#<strong>y</strong> ⇒ Object<sup>?</sup> </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#y-instance_method" title="Array#y (method)">#y</a></span> method retrieves the y coordinate.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#y=-instance_method" title="#y= (instance method)">#<strong>y=</strong>(y) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#y=-instance_method" title="Array#y= (method)">#y=</a></span> method sets the y coordinate.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#z-instance_method" title="#z (instance method)">#<strong>z</strong> ⇒ Object<sup>?</sup> </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#z-instance_method" title="Array#z (method)">#z</a></span> method retrieves the z coordinate.</p>
</div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#z=-instance_method" title="#z= (instance method)">#<strong>z=</strong>(z) ⇒ Object </a>
</span>
<span class="summary_desc"><div class='inline'>
<p>The <span class='object_link'><a href="#z=-instance_method" title="Array#z= (method)">#z=</a></span> method sets the z coordinate.</p>
</div></span>
</li>
</ul>
<div id="instance_method_details" class="method_details_list">
<h2>Instance Method Details</h2>
<div class="method_details first">
<h3 class="signature first" id="cross-instance_method">
<a style="float: right;" href="#header" title="Return to Top">↑</a>
<span class="overload">#<strong>cross</strong>(vector) ⇒ <tt><span class='object_link'><a href="Geom/Vector3d.html" title="Geom::Vector3d (class)">Geom::Vector3d</a></span></tt> </span>
<span class="overload">#<strong>cross</strong>(vector) ⇒ <tt><span class='object_link'><a href="Geom/Vector2d.html" title="Geom::Vector2d (class)">Geom::Vector2d</a></span></tt> </span>
</h3><div class="docstring">
<div class="discussion">
<p>The <span class='object_link'><a href="#cross-instance_method" title="Array#cross (method)">#cross</a></span> method is used to compute the cross product between two vectors.</p>
</div>
</div>
<div class="tags">
<div class="examples">
<p class="tag_title">Examples:</p>
<p class="example_title"><div class='inline'>
<p>With 3d array</p>
</div></p>
<pre class="example code"><code><span class='id identifier rubyid_vector1'>vector1</span> <span class='op'>=</span> <span class='const'><span class='object_link'><a href="Geom.html" title="Geom (module)">Geom</a></span></span><span class='op'>::</span><span class='const'><span class='object_link'><a href="Geom/Vector3d.html" title="Geom::Vector3d (class)">Vector3d</a></span></span><span class='period'>.</span><span class='id identifier rubyid_new'><span class='object_link'><a href="Geom/Vector3d.html#initialize-instance_method" title="Geom::Vector3d#initialize (method)">new</a></span></span><span class='lparen'>(</span><span class='int'>0</span><span class='comma'>,</span> <span class='int'>1</span><span class='comma'>,</span> <span class='int'>0</span><span class='rparen'>)</span>
<span class='id identifier rubyid_array'>array</span> <span class='op'>=</span> <span class='lbracket'>[</span><span class='int'>1</span><span class='comma'>,</span> <span class='int'>0</span><span class='comma'>,</span> <span class='int'>0</span><span class='rbracket'>]</span>
<span class='comment'># This will return a new Vector3d
</span><span class='id identifier rubyid_vector2'>vector2</span> <span class='op'>=</span> <span class='id identifier rubyid_array'>array</span><span class='period'>.</span><span class='id identifier rubyid_cross'>cross</span><span class='lparen'>(</span><span class='id identifier rubyid_vector1'>vector1</span><span class='rparen'>)</span></code></pre>
<p class="example_title"><div class='inline'>
<p>With 2d array</p>
</div></p>
<pre class="example code"><code><span class='id identifier rubyid_vector1'>vector1</span> <span class='op'>=</span> <span class='const'><span class='object_link'><a href="Geom.html" title="Geom (module)">Geom</a></span></span><span class='op'>::</span><span class='const'><span class='object_link'><a href="Geom/Vector2d.html" title="Geom::Vector2d (class)">Vector2d</a></span></span><span class='period'>.</span><span class='id identifier rubyid_new'><span class='object_link'><a href="Geom/Vector2d.html#initialize-instance_method" title="Geom::Vector2d#initialize (method)">new</a></span></span><span class='lparen'>(</span><span class='int'>0</span><span class='comma'>,</span> <span class='int'>1</span><span class='rparen'>)</span>
<span class='id identifier rubyid_array'>array</span> <span class='op'>=</span> <span class='lbracket'>[</span><span class='int'>1</span><span class='comma'>,</span> <span class='int'>0</span><span class='rbracket'>]</span>
<span class='id identifier rubyid_vector2'>vector2</span> <span class='op'>=</span> <span class='id identifier rubyid_array'>array</span><span class='period'>.</span><span class='id identifier rubyid_cross'>cross</span><span class='lparen'>(</span><span class='id identifier rubyid_vector1'>vector1</span><span class='rparen'>)</span>
<span class='id identifier rubyid_vector1'>vector1</span> <span class='op'>=</span> <span class='const'><span class='object_link'><a href="Geom.html" title="Geom (module)">Geom</a></span></span><span class='op'>::</span><span class='const'><span class='object_link'><a href="Geom/Vector3d.html" title="Geom::Vector3d (class)">Vector3d</a></span></span><span class='period'>.</span><span class='id identifier rubyid_new'><span class='object_link'><a href="Geom/Vector3d.html#initialize-instance_method" title="Geom::Vector3d#initialize (method)">new</a></span></span><span class='lparen'>(</span><span class='int'>0</span><span class='comma'>,</span> <span class='int'>1</span><span class='comma'>,</span> <span class='int'>0</span><span class='rparen'>)</span>
<span class='id identifier rubyid_array'>array</span> <span class='op'>=</span> <span class='lbracket'>[</span><span class='int'>1</span><span class='comma'>,</span> <span class='int'>0</span><span class='rbracket'>]</span>
<span class='id identifier rubyid_vector2'>vector2</span> <span class='op'>=</span> <span class='id identifier rubyid_array'>array</span><span class='period'>.</span><span class='id identifier rubyid_cross'>cross</span><span class='lparen'>(</span><span class='id identifier rubyid_vector1'>vector1</span><span class='rparen'>)</span> <span class='comment'># This will force array to be [1, 0, 0]</span></code></pre>
</div>
<p class="tag_title">Overloads:</p>
<ul class="overload">
<li class="overload_item">
<span class="signature">#<strong>cross</strong>(vector) ⇒ <tt><span class='object_link'><a href="Geom/Vector3d.html" title="Geom::Vector3d (class)">Geom::Vector3d</a></span></tt> </span>
<div class="docstring">
<div class="discussion">
</div>
</div>
<div class="tags">
<p class="tag_title">Parameters:</p>
<ul class="param">
<li>
<span class='name'>vector</span>
<span class='type'>(<tt><span class='object_link'><a href="Geom/Vector3d.html" title="Geom::Vector3d (class)">Geom::Vector3d</a></span></tt>)</span>
</li>
</ul>
<p class="tag_title">Returns:</p>
<ul class="return">
<li>
<span class='type'>(<tt><span class='object_link'><a href="Geom/Vector3d.html" title="Geom::Vector3d (class)">Geom::Vector3d</a></span></tt>)</span>
</li>
</ul>
</div>
</li>
<li class="overload_item">
<span class="signature">#<strong>cross</strong>(vector) ⇒ <tt><span class='object_link'><a href="Geom/Vector2d.html" title="Geom::Vector2d (class)">Geom::Vector2d</a></span></tt> </span>
<div class="docstring">
<div class="discussion">
</div>
</div>
<div class="tags">
<p class="tag_title">Parameters:</p>
<ul class="param">
<li>
<span class='name'>vector</span>
<span class='type'>(<tt><span class='object_link'><a href="Geom/Vector2d.html" title="Geom::Vector2d (class)">Geom::Vector2d</a></span></tt>)</span>
</li>
</ul>
<p class="tag_title">Returns:</p>
<ul class="return">
<li>
<span class='type'>(<tt><span class='object_link'><a href="Geom/Vector2d.html" title="Geom::Vector2d (class)">Geom::Vector2d</a></span></tt>)</span>
</li>
</ul>
</div>
</li>
</ul>
<p class="tag_title">Raises:</p>
<ul class="raise">
<li>
<span class='type'></span>
<div class='inline'>
<p>ArgumentError if the argument is the wrong vector type</p>
</div>
</li>
</ul>
<p class="tag_title">Version:</p>
<ul class="version">
<li>
<div class='inline'>
<p>SketchUp 6.0</p>
</div>
</li>
</ul>
</div>
</div>
<div class="method_details ">
<h3 class="signature " id="distance-instance_method">
<a style="float: right;" href="#header" title="Return to Top">↑</a>
<span class="overload">#<strong>distance</strong>(point) ⇒ <tt><span class='object_link'><a href="Length.html" title="Length (class)">Length</a></span></tt> </span>
<span class="overload">#<strong>distance</strong>(point) ⇒ <tt><span class='object_link'><a href="Length.html" title="Length (class)">Length</a></span></tt> </span>
</h3><div class="docstring">
<div class="discussion">
<p>The <span class='object_link'><a href="#distance-instance_method" title="Array#distance (method)">#distance</a></span> method is used to compute the distance between two points.</p>
</div>
</div>
<div class="tags">