Difference between revisions of "Reference:Material"
Jholsenback (talk | contribs) m (1 revision: Reference Migration Initial Load) |
m (canonicalize a version number) |
||
| (2 intermediate revisions by one other user not shown) | |||
| Line 2: | Line 2: | ||
{{#indexentry:material, object modifier}} | {{#indexentry:material, object modifier}} | ||
{{#indexentry:object modifier, material}} | {{#indexentry:object modifier, material}} | ||
| − | <p>One of the changes in POV-Ray | + | <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> | 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 | interior</code> statement. The <code>[[Reference:Halo|:halo|halo]]</code> statement, formerly part of | ||
| Line 9: | Line 9: | ||
<p> | <p> | ||
This split was deliberate and purposeful (see | This split was deliberate and purposeful (see | ||
| − | <!--<linkto "Why are Interior and Media Necessary?">Why are Interior and Media Necessary?</linkto>--->[[Reference:Interior# | + | <!--<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 | however beta testers pointed out that it made it difficult to | ||
entirely describe the surface properties and interior of an object in one | 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 | <p class="Note"><strong>Note:</strong> The <code>material</code> statement has nothing to do with the | ||
| − | <code>[[Reference: | + | <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> |
| − | not</em> a way to create patterned material. See | ||
| − | for explanation of this unrelated, yet similarly named, older feature.</p> | ||
Latest revision as of 14:47, 9 June 2021
One of the changes in POV-Ray v3.1 was the removal of several items from
texture { finish{...} } and to move them to the new
interior statement. The halo statement, formerly part of
texture, is now renamed media and made a part of
the interior.
This split was deliberate and purposeful (see 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 texture and interior which we call material.
The syntax is:
MATERIAL:
material { [MATERIAL_IDENTIFIER][MATERIAL_ITEMS...] }
MATERIAL_ITEMS:
TEXTURE | INTERIOR_TEXTURE | INTERIOR | TRANSFORMATIONS
For example:
#declare MyGlass=material{ texture{ Glass_T } interior{ Glass_I }}
object { MyObject material{ MyGlass}}
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 material{} wrapper
and only those textures or interiors specified are affected. For example:
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
}
}
Note: The material statement has nothing to do with the
material_map statement. A material_map is not a way to create patterned material. See Material Maps for explanation of this unrelated, yet similarly named, older feature.