Jholsenback: 1 revision: Reference Migration Initial Load

2012-03-15T19:05:15Z

1 revision: Reference Migration Initial Load

Jholsenback: 1 revision: Initial Load (TF)

2012-03-11T22:27:12Z

1 revision: Initial Load (TF)

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[[Category:Object Modifiers]]
{{#indexentry:clipped_by, object modifier}}
{{#indexentry:object modifier, clipped_by}}
The <code>clipped_by</code> statement is technically an object modifier
but it provides a type of CSG similar to CSG intersection. The syntax is:
<pre>
CLIPPED_BY:
clipped_by { UNTEXTURED_SOLID_OBJECT... } |
clipped_by { bounded_by }
</pre>

Where UNTEXTURED_SOLID_OBJECT is one or more solid objects which
have had no texture applied. For example:
<pre>
object {
My_Thing
clipped_by{plane{y,0}}
}
</pre>

Every part of the object <code>My_Thing</code> that is inside the plane is
retained while the remaining part is clipped off and discarded. In an <code>
intersection</code> object the hole is closed off. With <code>
clipped_by</code> it leaves an opening. For example the following figure
shows object <code>A</code> being clipped by object <code>B</code>.

<table class="centered" width="660x" cellpadding="0" cellspacing="10">
<tr>
<td>
[[Image:RefImgClipobj.gif|center|640px]]
</td>
</tr>
<tr>
<td>
An object clipped by another object.
</td>
</tr>
</table>

You may use <code>clipped_by</code> to slice off portions of any shape. In
many cases it will also result in faster rendering times than other methods
of altering a shape. Occasionally you will want to use the <code>
clipped_by</code> and <code>bounded_by</code> options with the same object.
The following shortcut saves typing and uses less memory.
<pre>
object {
My_Thing
bounded_by { box { <0,0,0>, <1,1,1> } }
clipped_by { bounded_by }
}
</pre>

This tells POV-Ray to use the same box as a clip that was used as a
bound.

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