File: C:/Ruby27-x64/share/doc/ruby/html/IRB/Canvas.html
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<li ><a href="#method-c-new">::new</a>
<li ><a href="#method-i-draw">#draw</a>
<li ><a href="#method-i-line">#line</a>
<li ><a href="#method-i-line0">#line0</a>
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<h1 id="sclass-IRB::Canvas" class="class">
class IRB::Canvas
</h1>
<section class="description">
</section>
<section id="5Buntitled-5D" class="documentation-section">
<section id="public-class-5Buntitled-5D-method-details" class="method-section">
<header>
<h3>Public Class Methods</h3>
</header>
<div id="method-c-new" class="method-detail ">
<div class="method-heading">
<span class="method-name">new</span><span
class="method-args">((h, w))</span>
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<div class="method-source-code" id="new-source">
<pre><span class="ruby-comment"># File lib/irb/easter-egg.rb, line 32</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>((<span class="ruby-identifier">h</span>, <span class="ruby-identifier">w</span>))
<span class="ruby-ivar">@data</span> = (<span class="ruby-value">0</span><span class="ruby-operator">..</span><span class="ruby-identifier">h</span><span class="ruby-value">-2</span>).<span class="ruby-identifier">map</span> { [<span class="ruby-value">0</span>] <span class="ruby-operator">*</span> <span class="ruby-identifier">w</span> }
<span class="ruby-ivar">@scale</span> = [<span class="ruby-identifier">w</span> <span class="ruby-operator">/</span> <span class="ruby-value">2.0</span>, <span class="ruby-identifier">h</span><span class="ruby-value">-2</span>].<span class="ruby-identifier">min</span>
<span class="ruby-ivar">@center</span> = <span class="ruby-constant">Complex</span>(<span class="ruby-identifier">w</span> <span class="ruby-operator">/</span> <span class="ruby-value">2</span>, <span class="ruby-identifier">h</span><span class="ruby-value">-2</span>)
<span class="ruby-keyword">end</span></pre>
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</section>
<section id="public-instance-5Buntitled-5D-method-details" class="method-section">
<header>
<h3>Public Instance Methods</h3>
</header>
<div id="method-i-draw" class="method-detail ">
<div class="method-heading">
<span class="method-name">draw</span><span
class="method-args">() { || ... }</span>
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<div class="method-description">
<div class="method-source-code" id="draw-source">
<pre><span class="ruby-comment"># File lib/irb/easter-egg.rb, line 55</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">draw</span>
<span class="ruby-ivar">@data</span>.<span class="ruby-identifier">each</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">row</span><span class="ruby-operator">|</span> <span class="ruby-identifier">row</span>.<span class="ruby-identifier">fill</span>(<span class="ruby-value">0</span>) }
<span class="ruby-keyword">yield</span>
<span class="ruby-ivar">@data</span>.<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">row</span><span class="ruby-operator">|</span> <span class="ruby-identifier">row</span>.<span class="ruby-identifier">map</span> {<span class="ruby-operator">|</span><span class="ruby-identifier">n</span><span class="ruby-operator">|</span> <span class="ruby-string">" ',;"</span>[<span class="ruby-identifier">n</span>] }.<span class="ruby-identifier">join</span> }.<span class="ruby-identifier">join</span>(<span class="ruby-string">"\n"</span>)
<span class="ruby-keyword">end</span></pre>
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</div>
<div id="method-i-line" class="method-detail ">
<div class="method-heading">
<span class="method-name">line</span><span
class="method-args">((x1, y1), (x2, y2))</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="line-source">
<pre><span class="ruby-comment"># File lib/irb/easter-egg.rb, line 38</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">line</span>((<span class="ruby-identifier">x1</span>, <span class="ruby-identifier">y1</span>), (<span class="ruby-identifier">x2</span>, <span class="ruby-identifier">y2</span>))
<span class="ruby-identifier">p1</span> = <span class="ruby-constant">Complex</span>(<span class="ruby-identifier">x1</span>, <span class="ruby-identifier">y1</span>) <span class="ruby-operator">/</span> <span class="ruby-value">2</span> <span class="ruby-operator">*</span> <span class="ruby-ivar">@scale</span> <span class="ruby-operator">+</span> <span class="ruby-ivar">@center</span>
<span class="ruby-identifier">p2</span> = <span class="ruby-constant">Complex</span>(<span class="ruby-identifier">x2</span>, <span class="ruby-identifier">y2</span>) <span class="ruby-operator">/</span> <span class="ruby-value">2</span> <span class="ruby-operator">*</span> <span class="ruby-ivar">@scale</span> <span class="ruby-operator">+</span> <span class="ruby-ivar">@center</span>
<span class="ruby-identifier">line0</span>(<span class="ruby-identifier">p1</span>, <span class="ruby-identifier">p2</span>)
<span class="ruby-keyword">end</span></pre>
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</section>
<section id="private-instance-5Buntitled-5D-method-details" class="method-section">
<header>
<h3>Private Instance Methods</h3>
</header>
<div id="method-i-line0" class="method-detail ">
<div class="method-heading">
<span class="method-name">line0</span><span
class="method-args">(p1, p2)</span>
<span class="method-click-advice">click to toggle source</span>
</div>
<div class="method-description">
<div class="method-source-code" id="line0-source">
<pre><span class="ruby-comment"># File lib/irb/easter-egg.rb, line 44</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">line0</span>(<span class="ruby-identifier">p1</span>, <span class="ruby-identifier">p2</span>)
<span class="ruby-identifier">mid</span> = (<span class="ruby-identifier">p1</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">p2</span>) <span class="ruby-operator">/</span> <span class="ruby-value">2</span>
<span class="ruby-keyword">if</span> (<span class="ruby-identifier">p1</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">p2</span>).<span class="ruby-identifier">abs</span> <span class="ruby-operator"><</span> <span class="ruby-value">1</span>
<span class="ruby-identifier">x</span>, <span class="ruby-identifier">y</span> = <span class="ruby-identifier">mid</span>.<span class="ruby-identifier">rect</span>
<span class="ruby-ivar">@data</span>[<span class="ruby-identifier">y</span> <span class="ruby-operator">/</span> <span class="ruby-value">2</span>][<span class="ruby-identifier">x</span>] <span class="ruby-operator">|=</span> (<span class="ruby-identifier">y</span> <span class="ruby-operator">%</span> <span class="ruby-value">2</span> <span class="ruby-operator">></span> <span class="ruby-value">1</span> <span class="ruby-operator">?</span> <span class="ruby-value">2</span> <span class="ruby-operator">:</span> <span class="ruby-value">1</span>)
<span class="ruby-keyword">else</span>
<span class="ruby-identifier">line0</span>(<span class="ruby-identifier">p1</span>, <span class="ruby-identifier">mid</span>)
<span class="ruby-identifier">line0</span>(<span class="ruby-identifier">p2</span>, <span class="ruby-identifier">mid</span>)
<span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
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