<?xml version="1.0"?>
<feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
	<id>https://wiki.povray.org/content?action=history&amp;feed=atom&amp;title=Reference%3AHollow_Object_Modifier</id>
	<title>Reference:Hollow Object Modifier - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://wiki.povray.org/content?action=history&amp;feed=atom&amp;title=Reference%3AHollow_Object_Modifier"/>
	<link rel="alternate" type="text/html" href="https://wiki.povray.org/content?title=Reference:Hollow_Object_Modifier&amp;action=history"/>
	<updated>2026-04-06T09:15:40Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
	<generator>MediaWiki 1.35.1</generator>
	<entry>
		<id>https://wiki.povray.org/content?title=Reference:Hollow_Object_Modifier&amp;diff=7301&amp;oldid=prev</id>
		<title>Jholsenback: 1 revision: underscore link repair</title>
		<link rel="alternate" type="text/html" href="https://wiki.povray.org/content?title=Reference:Hollow_Object_Modifier&amp;diff=7301&amp;oldid=prev"/>
		<updated>2012-07-17T18:09:18Z</updated>

		<summary type="html">&lt;p&gt;1 revision: underscore link repair&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left diff-editfont-monospace&quot; data-mw=&quot;interface&quot;&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 18:09, 17 July 2012&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>Jholsenback</name></author>
	</entry>
	<entry>
		<id>https://wiki.povray.org/content?title=Reference:Hollow_Object_Modifier&amp;diff=7300&amp;oldid=prev</id>
		<title>Jholsenback: still testing that theory</title>
		<link rel="alternate" type="text/html" href="https://wiki.povray.org/content?title=Reference:Hollow_Object_Modifier&amp;diff=7300&amp;oldid=prev"/>
		<updated>2012-07-16T13:17:14Z</updated>

		<summary type="html">&lt;p&gt;still testing that theory&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left diff-editfont-monospace&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 13:17, 16 July 2012&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l5&quot; &gt;Line 5:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 5:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;completely fills the interior of an object. By adding the &amp;lt;code&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;completely fills the interior of an object. By adding the &amp;lt;code&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;hollow&amp;lt;/code&amp;gt; keyword to the object you can make it hollow, also see the  &lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;hollow&amp;lt;/code&amp;gt; keyword to the object you can make it hollow, also see the  &lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;!--&amp;lt;linkto &amp;quot;Empty and Solid Objects&amp;quot;&amp;gt;Empty and Solid Objects&amp;lt;/linkto&amp;gt;---&amp;gt;[[Reference:Interior#&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Empty_and_Solid_Objects&lt;/del&gt;|Empty and Solid Objects]] chapter. That is very&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;!--&amp;lt;linkto &amp;quot;Empty and Solid Objects&amp;quot;&amp;gt;Empty and Solid Objects&amp;lt;/linkto&amp;gt;---&amp;gt;[[Reference:Interior#&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Empty and Solid Objects&lt;/ins&gt;|Empty and Solid Objects]] chapter. That is very&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;useful if you want atmospheric effects to exist inside an object. It is even&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;useful if you want atmospheric effects to exist inside an object. It is even&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;required for objects containing an interior media. The keyword may optionally&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;required for objects containing an interior media. The keyword may optionally&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Jholsenback</name></author>
	</entry>
	<entry>
		<id>https://wiki.povray.org/content?title=Reference:Hollow_Object_Modifier&amp;diff=7262&amp;oldid=prev</id>
		<title>Jholsenback: removed unneeded wiki heading</title>
		<link rel="alternate" type="text/html" href="https://wiki.povray.org/content?title=Reference:Hollow_Object_Modifier&amp;diff=7262&amp;oldid=prev"/>
		<updated>2012-07-11T16:20:39Z</updated>

		<summary type="html">&lt;p&gt;removed unneeded wiki heading&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left diff-editfont-monospace&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 16:20, 11 July 2012&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l2&quot; &gt;Line 2:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 2:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{#indexentry:hollow, object modifier}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{#indexentry:hollow, object modifier}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{#indexentry:object modifier, hollow}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{#indexentry:object modifier, hollow}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;====Hollow====&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;p&amp;gt;POV-Ray by default assumes that objects are made of a solid material that&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;lt;p&amp;gt;POV-Ray by default assumes that objects are made of a solid material that&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;completely fills the interior of an object. By adding the &amp;lt;code&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;completely fills the interior of an object. By adding the &amp;lt;code&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Jholsenback</name></author>
	</entry>
	<entry>
		<id>https://wiki.povray.org/content?title=Reference:Hollow_Object_Modifier&amp;diff=6884&amp;oldid=prev</id>
		<title>Jholsenback: 1 revision: Reference Migration Initial Load</title>
		<link rel="alternate" type="text/html" href="https://wiki.povray.org/content?title=Reference:Hollow_Object_Modifier&amp;diff=6884&amp;oldid=prev"/>
		<updated>2012-03-15T19:06:21Z</updated>

		<summary type="html">&lt;p&gt;1 revision: Reference Migration Initial Load&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left diff-editfont-monospace&quot; data-mw=&quot;interface&quot;&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 19:06, 15 March 2012&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-notice&quot; lang=&quot;en&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>Jholsenback</name></author>
	</entry>
	<entry>
		<id>https://wiki.povray.org/content?title=Reference:Hollow_Object_Modifier&amp;diff=6883&amp;oldid=prev</id>
		<title>Jholsenback: 1 revision: Initial Load (TF)</title>
		<link rel="alternate" type="text/html" href="https://wiki.povray.org/content?title=Reference:Hollow_Object_Modifier&amp;diff=6883&amp;oldid=prev"/>
		<updated>2012-03-11T22:27:13Z</updated>

		<summary type="html">&lt;p&gt;1 revision: Initial Load (TF)&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;[[Category:Object Modifiers]]&lt;br /&gt;
{{#indexentry:hollow, object modifier}}&lt;br /&gt;
{{#indexentry:object modifier, hollow}}&lt;br /&gt;
====Hollow====&lt;br /&gt;
&amp;lt;p&amp;gt;POV-Ray by default assumes that objects are made of a solid material that&lt;br /&gt;
completely fills the interior of an object. By adding the &amp;lt;code&amp;gt;&lt;br /&gt;
hollow&amp;lt;/code&amp;gt; keyword to the object you can make it hollow, also see the &lt;br /&gt;
&amp;lt;!--&amp;lt;linkto &amp;quot;Empty and Solid Objects&amp;quot;&amp;gt;Empty and Solid Objects&amp;lt;/linkto&amp;gt;---&amp;gt;[[Reference:Interior#Empty_and_Solid_Objects|Empty and Solid Objects]] chapter. That is very&lt;br /&gt;
useful if you want atmospheric effects to exist inside an object. It is even&lt;br /&gt;
required for objects containing an interior media. The keyword may optionally&lt;br /&gt;
be followed by a float expression which is interpreted as a boolean value.&lt;br /&gt;
For example &amp;lt;code&amp;gt;hollow off&amp;lt;/code&amp;gt; may be used to force it off. When the&lt;br /&gt;
keyword is specified alone, it is the same as &amp;lt;code&amp;gt;hollow on&amp;lt;/code&amp;gt;. &lt;br /&gt;
By default &amp;lt;code&amp;gt;hollow&amp;lt;/code&amp;gt; is &amp;lt;code&amp;gt;off&amp;lt;/code&amp;gt; when not specified.&amp;lt;/p&amp;gt;&lt;br /&gt;
&amp;lt;p&amp;gt;&lt;br /&gt;
In order to get a hollow CSG object you just have to make the top level&lt;br /&gt;
object hollow. All children will assume the same &amp;lt;code&amp;gt;hollow&amp;lt;/code&amp;gt; state&lt;br /&gt;
except when their state is explicitly set. The following example will set both&lt;br /&gt;
spheres inside the union hollow&amp;lt;/p&amp;gt;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
union {&lt;br /&gt;
  sphere { -0.5*x, 1 }&lt;br /&gt;
  sphere {  0.5*x, 1 }&lt;br /&gt;
  hollow&lt;br /&gt;
  }&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&amp;lt;p&amp;gt;while the next example will only set the second sphere hollow because the&lt;br /&gt;
first sphere was explicitly set to be not hollow.&amp;lt;/p&amp;gt;&lt;br /&gt;
&amp;lt;pre&amp;gt;&lt;br /&gt;
union {&lt;br /&gt;
  sphere { -0.5*x, 1 hollow off }&lt;br /&gt;
  sphere {  0.5*x, 1 }&lt;br /&gt;
  hollow on&lt;br /&gt;
  }&lt;br /&gt;
&amp;lt;/pre&amp;gt;&lt;/div&gt;</summary>
		<author><name>Jholsenback</name></author>
	</entry>
</feed>