Blue to Scalar - Revision history

Redmaw: Updated descriptions and added example images.

2022-03-03T19:40:06Z

Updated descriptions and added example images.

JavaJones at 18:29, 1 June 2011

2011-06-01T18:29:35Z

JavaJones at 01:04, 18 May 2011

2011-05-18T01:04:31Z

JavaJones: /* Blue to Scalar */

2011-04-28T19:55:49Z

‎Blue to Scalar

127.0.0.1: jrfconvert import

2010-07-11T02:55:58Z

jrfconvert import

New page

[[Category:IMPORT]]
='''Blue to Scalar'''=

[[Image:drex_module_101_image_0.png|485pxpx|Blue to Scalar]]
__NOTOC__

← Older revision		Revision as of 19:40, 3 March 2022
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−	[[~~Image~~:~~drex_module_101_image_0~~.png\|~~485pxpx~~\|Blue to Scalar]]	+	<div style="float:right; border-style:solid; padding:20px"><categorytree mode=pages hideroot=off>Convert</categorytree></div>
		+	[[File:Blue2Scalar_00_GUI.png\|none\|470px\|Blue to Scalar]]
		+
		+
		+	__TOC__
		+
		+
		+	==Overview==
		+	The Red/Green/Blue to scalar nodes all take a colour as input and output the respective colour component as a scalar. For example, the Red to scalar node will output the red value of the input colour.
		+
		+
		+	{\|
		+	\|-
		+	\| [[File:RGB2Scalar_01_PaintedShader_Pop.jpg\|none\|800px\|In this example, the Red/Green/Blue to scalar nodes are used to create masks based on a painted shader. The mask created by the Red to scalar node is then used to control the density of a population.]]
		+	\|-
		+	\| [[File:RGB2Scalar_02_PaintedShader_NodeNetwork.jpg\| none\|800px\|The Node network view showing how each of the red, green, and blue channels can be isolated from the Painted shader, and then used as masks.]]
		+	\|}
		+
		+
		+	This node has no other settings apart from the Input node.
		+
		+	'''Settings:'''
		+
		+	*'''Name:''' This setting allows you to apply a descriptive name to the node, which can be helpful when using multiple Blue to scalar nodes in a project.
		+	*'''Enable:''' When checked, the node is active and the conversion operation will take place. When unchecked the values assigned to its Main Input, if any, are passed through, otherwise a value of 0 is passed through.
		+
		+
		+	==Fun with Blue to Scalar==
		+	In the example below, a simple image is used to define areas for population of crops and irrigation canals. By extracting the colour channels via the Red/Green/Blue to scalar nodes, and then combining them with other function nodes, like Add scalar and Subtract scalar, mattes can be derived to help control population density or shader influence.
		+
		+	{\|
		+	\|-
		+	\| [[File:RGB2Scalar_03_ImageChannels.jpg\|none\|800px\|The source image and red, green, and blue channels used to extract mattes for the agricultural and irrigation areas in the render below.]]
		+	\|-
		+	\| [[File:RGB2Scalar_04_Render.jpg\|none\|800px\|Render using Red/Green/Blue to scalar nodes to extract mattes from an image to be used for populations of agriculture plants and surface shader for irrigation water.]]
		+	\|-
		+	\| [[File:RGB2Scalar_05_Render_NodeNetwork.jpg\|none\|800px\|Node network view showing use of Red/Green/Blue to scalar nodes to extract mattes from an image to be used for populations of agriculture plants and surface shader for irrigation water.]]
		+	\|}
		+
		+
		+
		+	<br /n>

−	'''Node Description & Purpose: '''<br /> The Red/Green/Blue to scalar nodes all take a colour as input and output the respective colour component as a scalar. For example, the Red to scalar node will output the red value of the input colour.<br /><br />'''Node Type: ''' Function<br /><br />'''Settings: '''<br /> This node has no other settings apart from the Input node.

−	~~<!-- imported from file: module_101.html-->~~

	[[Category:Convert]]		[[Category:Convert]]

← Older revision		Revision as of 18:29, 1 June 2011
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−	[[Category:Convert\| ]]	+	[[Category:Convert]]

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 [[Image:drex_module_101_image_0.png|485pxpx|Blue to Scalar]]
 '''Node Description & Purpose: '''<br /> The Red/Green/Blue to scalar nodes all take a colour as input and output the respective colour component as a scalar. For example, the Red to scalar node will output the red value of the input colour.<br /><br />'''Node Type: ''' Function<br /><br />'''Settings: '''<br /> This node has no other settings apart from the Input node.
 <!-- imported from file: module_101.html-->