Reference:Checker Pattern - Revision history

Jr: fix typo

2025-05-10T14:05:28Z

fix typo

Clipka at 13:36, 10 June 2017

2017-06-10T13:36:44Z

Le Forgeron at 08:36, 1 March 2014

2014-03-01T08:36:53Z

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2012-03-15T19:05:15Z

1 revision: Reference Migration Initial Load

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2012-03-11T22:27:58Z

1 revision: Initial Load (TF)

New page

[[Category:Patterns]]
{{#indexentry:checker, keyword}}
{{#indexentry:checker, pattern}}
{{#indexentry:Keyword, checker}}
{{#indexentry:Pattern, checker}}
The <code>checker</code> pattern produces a checkered pattern consisting
of alternating squares of two colors. The syntax is:
<pre>
pigment { checker [COLOR_1 [, COLOR_2]] [PATTERN_MODIFIERS...] }
</pre>

If no colors are specified then default blue and green colors are
used.

The checker pattern is actually a series of cubes that are one unit in size.
Imagine a bunch of 1 inch cubes made from two different colors of modeling
clay. Now imagine arranging the cubes in an alternating check pattern and
stacking them in layer after layer so that the colors still alternate in
every direction. Eventually you would have a larger cube. The pattern of
checks on each side is what the POV-Ray checker pattern produces when applied
to a box object. Finally imagine cutting away at the cube until it is carved
into a smooth sphere or any other shape. This is what the checker pattern
would look like on an object of any kind.

You may also use pigment statements in place of the colors. For example:
<pre>
pigment { checker pigment{Jade}, pigment{Black_Marble} }
</pre>

This example uses normals:
<pre>
normal { checker 0.5 }
</pre>

The float value is an optional bump size. You may also use full normal
statements. For example:
<pre>
normal {
checker normal{gradient x scale .2}, normal{gradient y scale .2}
}
</pre>

When used with textures, the syntax is
<pre>
texture { checker texture{T_Wood_3A}, texture{Stone12} }
</pre>

The <code>checker</code> pattern has a default color_map built in that
results in blue and green tiles.

This use of checker as a texture pattern replaces the special tiles
texture in previous versions of POV-Ray. You may still use <code>
tiles</code> but it may be phased out in future versions so checker textures
are best.

This is a block pattern which cannot use wave types, <code>
color_map</code>, or <code>slope_map</code> modifiers.

@@ Line 25: / Line 25: @@
 You may also use pigment statements in place of the colors. For example:</p>
 <pre>
-pigment { checker pigment{Jade}, pigment{Black_Marble} }
+pigment { checker pigment{Jade}, pigment{Blood_Marble} }
 </pre>

@@ Line 57: / Line 57: @@
 color_map</code>, or <code>slope_map</code> modifiers.</p>
-<table class="centered" width="420px" cellpadding="0" checkerpacing="10">
+<table class="centered" width="420px" cellpadding="0" cellspacing="10">
 <tr>
    <td>[[Image:RefImgCheckerPigment.png|center|200px<!--centered--->]]</td>

← Older revision		Revision as of 08:36, 1 March 2014
Line 56:		Line 56:
	This is a block pattern which cannot use wave types, <code>		This is a block pattern which cannot use wave types, <code>
	color_map</code>, or <code>slope_map</code> modifiers.</p>		color_map</code>, or <code>slope_map</code> modifiers.</p>
		+
		+	<table class="centered" width="420px" cellpadding="0" checkerpacing="10">
		+	<tr>
		+	<td>[[Image:RefImgCheckerPigment.png\|center\|200px<!--centered--->]]</td>
		+	<td>[[Image:RefImgCheckerNormal.png\|center\|200px<!--centered--->]]</td>
		+	</tr>
		+	<tr>
		+	<td colspan="2"><p class="caption">checker pattern used as pigment and normal respectively</p></td>
		+	</tr>
		+	</table>

← Older revision	Revision as of 19:05, 15 March 2012
(No difference)