Reference:Potential Pattern - Revision history

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2017-06-26T10:21:03Z

version changes

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2016-12-20T11:42:18Z

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2016-12-20T11:37:52Z

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Jholsenback: merged talk content

2016-12-20T11:21:21Z

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Jholsenback: initial creation

2016-12-18T14:41:26Z

initial creation

New page

<p>{{New}} in version 3.7.1 a <code>potential</code> pattern has been added to define a pattern based on the <em>potential</em> field of a blob or <code>isosurface</code> object. More to follow...</p>

← Older revision		Revision as of 10:21, 26 June 2017
Line 1:		Line 1:
−	<p>{{New}} in version 3.~~7.1~~ a <code>potential</code> pattern has been added to define a pattern based on the <em>potential</em> field of a <code>blob</code> or <code>isosurface</code> object.</p>	+	<p>{{New}} in version 3.8 a <code>potential</code> pattern has been added to define a pattern based on the <em>potential</em> field of a <code>blob</code> or <code>isosurface</code> object.</p>
	<p>Using <code>pigment</code> in the following example, the syntax for the new pattern is as follows:</p>		<p>Using <code>pigment</code> in the following example, the syntax for the new pattern is as follows:</p>

@@ Line 14: / Line 14: @@
 <p>The <em>isosurface's</em> container has no effect on the <code>potential</code> pattern.</p>
-<p>The pattern value is <em>not</em> bound to the [0..1] range, unless you explicitly specify a <em>wave_type</em>.</p>
+<p>The pattern value is <em>not</em> bound to the [0..1] range, unless you explicitly specify a <em>wave type</em>. See also: [[Reference:Waves Pattern|Waves Pattern]].</p>
 <p>Applying the <code>inverse</code> keyword to the object will cause the pattern to be reversed as well; so, when using <code>threshold on</code> for blobs, positive pattern values always indicate inside, while negative values indicate outside.</p>

@@ Line 14: / Line 14: @@
 <p>The <em>isosurface's</em> container has no effect on the <code>potential</code> pattern.</p>
-<p>The pattern value is <em>not</em> bound to the [0..1] range, unless you explicitly specify a <code>wave_type</code>.</p>
+<p>The pattern value is <em>not</em> bound to the [0..1] range, unless you explicitly specify a <em>wave_type</em>.</p>
 <p>Applying the <code>inverse</code> keyword to the object will cause the pattern to be reversed as well; so, when using <code>threshold on</code> for blobs, positive pattern values always indicate inside, while negative values indicate outside.</p>

← Older revision		Revision as of 11:21, 20 December 2016
Line 1:		Line 1:
−	<p>{{New}} in version 3.7.1 a <code>potential</code> pattern has been added to define a pattern based on the <em>potential</em> field of a blob or <code>isosurface</code> object. ~~More~~ to ~~follow~~...</p>	+	<p>{{New}} in version 3.7.1 a <code>potential</code> pattern has been added to define a pattern based on the <em>potential</em> field of a <code>blob</code> or <code>isosurface</code> object.</p>
		+	<p>Using <code>pigment</code> in the following example, the syntax for the new pattern is as follows:</p>
		+
		+	<pre>
		+	pigment {
		+	potential { BLOB \| ISOSURFACE }
		+	[threshold BOOL]
		+	[PIGMENT_MODIFIERS...]
		+	}
		+	</pre>
		+
		+	<p>With <code>threshold on</code> the pattern will take the <code>blob</code> or <code>isosurface</code> object's <em>potential minus the threshold</em>; otherwise it will take the <em>raw potential</em> which is the default behavior.</p>
		+
		+	<p>The <em>isosurface's</em> container has no effect on the <code>potential</code> pattern.</p>
		+
		+	<p>The pattern value is <em>not</em> bound to the [0..1] range, unless you explicitly specify a <code>wave_type</code>.</p>
		+
		+	<p>Applying the <code>inverse</code> keyword to the object will cause the pattern to be reversed as well; so, when using <code>threshold on</code> for blobs, positive pattern values always indicate inside, while negative values indicate outside.</p>
		+
		+	<p class="Note"><strong>Note:</strong> By default this is the opposite for isosurfaces, so for easier use, the new pattern is therefore accompanied by an extension to the <code>isosurface</code> syntax as shown below:</p>
		+
		+	<pre>
		+	isosurface {
		+	...
		+	polarity FLOAT
		+	...
		+	}
		+	</pre>
		+
		+	<p>Setting <code>polarity</code> to a positive value causes above-threshold values to be interpreted as inside, and below-threshold values as outside, rather than the other way round</p>
		+
		+	<p>See also: [[Reference:Blob\|Blob]] and [[Reference:Isosurface\|Isosurface]]</p>