Reference:Material - Revision history

Clipka: canonicalize a version number

2021-06-09T14:47:16Z

canonicalize a version number

Jholsenback: 1 revision: underscore link repair

2012-07-17T18:09:18Z

1 revision: underscore link repair

Jholsenback: still testing that theory

2012-07-16T12:51:57Z

still testing that theory

Jholsenback: 1 revision: Reference Migration Initial Load

2012-03-15T19:07:25Z

1 revision: Reference Migration Initial Load

Jholsenback: 1 revision: Initial Load (TF)

2012-03-11T22:27:13Z

1 revision: Initial Load (TF)

New page

[[Category:Object Modifiers]]
{{#indexentry:material, object modifier}}
{{#indexentry:object modifier, material}}
One of the changes in POV-Ray 3.1 was the removal of several items from <code>
texture { finish{</code>...<code>} }</code> and to move them to the new <code>
interior</code> statement. The <code>[[Reference:Halo|:halo|halo]]</code> statement, formerly part of
<code>[[Reference:Texture|:texture|texture]]</code>, is now renamed <code>[[Reference:Media|:media|media]]</code> and made a part of
the <code>[[Reference:Interior|:interior|interior]]</code>.

This split was deliberate and purposeful (see
[[Reference:Interior#Why_are_Interior_and_Media_Necessary.3F|Why are Interior and Media Necessary?]])
however beta testers pointed out that it made it difficult to
entirely describe the surface properties and interior of an object in one
statement that can be referenced by a single identifier in a texture
library.

The result is that we created a wrapper around <code>texture</code> and <code>interior</code> which we call <code>material</code>.

The syntax is:
<pre>
MATERIAL:
material { [MATERIAL_IDENTIFIER][MATERIAL_ITEMS...] }
MATERIAL_ITEMS:
TEXTURE | INTERIOR_TEXTURE | INTERIOR | TRANSFORMATIONS
</pre>

For example:
<pre>
#declare MyGlass=material{ texture{ Glass_T } interior{ Glass_I }}
object { MyObject material{ MyGlass}}
</pre>

Internally, the material is not attached to the object. The
material is just a container that brings the texture and interior to the
object. It is the texture and interior itself that is attached to the object.
Users should still consider texture and interior as separate items attached
to the object.

The material is just a bucket to carry them. If the object
already has a texture, then the material texture is layered over it. If the object
already has an interior, the material interior fully replaces it and the old
interior is destroyed. Transformations inside the material affect only the
textures and interiors which are inside the <code>material{}</code> wrapper
and only those textures or interiors specified are affected. For example:
<pre>
object {
MyObject
material {
texture { MyTexture }
scale 4 //affects texture but not object or interior
interior { MyInterior }
translate 5*x //affects texture and interior, not object
}
}
</pre>

Note: The <code>material</code> statement has nothing to do with the
<code>[[Reference:Patterned_Textures#Material_Maps|:material_map|material_map]]</code> statement. A <code>material_map</code> is 
not a way to create patterned material. See [[Reference:Patterned_Textures#Material_Maps|Material Maps]]
for explanation of this unrelated, yet similarly named, older feature.

@@ Line 9: / Line 9: @@
 <p>
 This split was deliberate and purposeful (see
-<!--<linkto "Why are Interior and Media Necessary?">Why are Interior and Media Necessary?</linkto>--->[[Reference:Interior#Why_are_Interior_and_Media_Necessary.3F|Why are Interior and Media Necessary?]])
+<!--<linkto "Why are Interior and Media Necessary?">Why are Interior and Media Necessary?</linkto>--->[[Reference:Interior#Why are Interior and Media Necessary?|Why are Interior and Media Necessary?]])
 however beta testers pointed out that it made it difficult to
 entirely describe the surface properties and interior of an object in one
@@ Line 56: / Line 56: @@
 <p class="Note"><strong>Note:</strong> The <code>material</code> statement has nothing to do with the
-<code>[[Reference:Patterned_Textures#Material_Maps|:material_map|material_map]]</code> statement. A <code>material_map</code> is <em>
+<code>[[Reference:Patterned Textures#Material Maps|:material_map|material_map]]</code> statement. A <code>material_map</code> is <em> not</em> a way to create patterned material. See [[Reference:Patterned Textures#Material Maps|Material Maps]] for explanation of this unrelated, yet similarly named, older feature.</p>

@@ Line 2: / Line 2: @@
 {{#indexentry:material, object modifier}}
 {{#indexentry:object modifier, material}}
-<p>One of the changes in POV-Ray 3.1 was the removal of several items from <code>
+<p>One of the changes in POV-Ray v3.1 was the removal of several items from <code>
 texture { finish{</code>...<code>} }</code> and to move them to the new <code>
 interior</code> statement. The <code>[[Reference:Halo|:halo|halo]]</code> statement, formerly part of

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