Heightfield Generate - Revision history

Redmaw: Added example images for Variation, Variation method, and Buoyancy settings. Updated descriptions and conformed "when checked" terminology.

2021-02-10T21:41:46Z

Added example images for Variation, Variation method, and Buoyancy settings. Updated descriptions and conformed "when checked" terminology.

Redmaw: Updated Buoyancy description.

2021-02-04T20:43:52Z

Updated Buoyancy description.

Redmaw: Combined HF Generate node Wiki pages into main page. Added example images for all settings and updated descriptions.

2021-02-04T01:11:08Z

Combined HF Generate node Wiki pages into main page. Added example images for all settings and updated descriptions.

Redmaw: Combining multiple wiki pages for this node.

2021-02-04T00:46:10Z

Combining multiple wiki pages for this node.

Show changes

JavaJones at 01:59, 31 May 2012

2012-05-31T01:59:54Z

Jo at 06:43, 11 April 2012

2012-04-11T06:43:21Z

JavaJones at 18:45, 1 June 2011

2011-06-01T18:45:06Z

JavaJones at 02:33, 18 May 2011

2011-05-18T02:33:27Z

127.0.0.1: jrfconvert import

2010-07-11T02:56:09Z

jrfconvert import

New page

[[Category:IMPORT]]
='''Heightfield Generate'''=

[[Image:drex_module_178_image_0.png|485pxpx|Heightfield Generate]]

==Additional tabs for Heightfield Generate==

* [[Heightfield Generate - Tweak Fractal Tab]]

* [[Heightfield Generate - Use Shader Tab]]
__NOTOC__

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 '''Settings:'''
 * '''Name:''' This setting allows you to apply a descriptive name to the node, which can be helpful when using multiple Heightfield generate nodes in a project.
-* '''New heightfield:'''  When checked, or enabled, a heightfield’s resolution and size is generated using the “Number of points” and “Size in metres”  settings.  When unchecked, or disabled, a heightfield’s dimensions are taken from the nodes connected to the Input node.
+* '''New heightfield:'''  When checked, a heightfield’s resolution and size is generated using the “Number of points” and “Size in metres”  settings.  When unchecked, or disabled, a heightfield’s dimensions are taken from the nodes connected to the Input node.
 * '''Number of points: '''This sets the number of points, or resolution, of the heightfield.  The higher the value, the greater the resolution and more detail.  This setting does not control the area the heightfield covers.
 <ul>
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 |}
 </ul>
-* '''Generate at load time:''' When checked, or enabled, the heightfield will regenerate when a project is loaded.  This setting is enabled by default.
+* '''Generate at load time:''' When checked, the heightfield will regenerate when a project is loaded.  This setting is enabled by default.
 * '''Generate Now:'''  Clicking this button will generate the heightfield.
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 [[File:HFGenerate_01_GUI_FractalTab.png|none|470px|Fractal Tab]]
 The Fractal tab contains settings to let you define the main fractal pattern features used to generate the heightfield.
 * '''Feature scale:''' This setting controls the average size, in metres, of the features generated in the heightfield.
 <ul>
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 |}
 </ul>
 * '''Feature steepness:''' This setting defines the steepness of the generated features. Higher values increase the steepness and height of the features.
 <ul>
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 |}
 </ul>
 * '''Roughness:''' This controls the roughness detail of the generated terrain. Lower values result in a smoother terrain, while larger values result in more varied terrain details.
 <ul>
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 |}
 </ul>
 *'''Seed:'''  This setting controls the fractal pattern used by the node to generate the heightfield.  This allows you to easily create variations of the terrain based on the node’s other settings.  For example, you can define the “Feature scale” for the terrain and then explore variations on this theme by clicking on the “Random Seed” button which will change the Seed value.  Using the same Seed value in multiple Heightfield Generate nodes will generate the same pattern and heightfield.
 <ul>
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 |}
 </ul>
 * '''Random Seed: ''' Clicking this button will randomly choose a new value for the “Seed” setting.
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 [[File:HFGenerate_02_GUI_TweakFractalTab.png|none|470px|Tweak Fractal Tab]]
 The Tweak Fractal tab contains settings that allow you to change additional aspects of the fractal pattern used to generate the heightfield.
-* '''Variation:''' This setting controls the distribution of the large and small features in the fractal pattern used by the node to generate the heightfield.  If set to “0” then both the large and small features are evenly distributed.  At higher values the fractal noise starts to vary less evenly, giving the pattern an increasingly uneven distribution between the large and small features.
 <ul>
 {|
 |-
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 |}
 </ul>
 * '''Variation method:''' This popup menu provides three options for applying the "Variation" to the fractal noise pattern.
 <ul>
-[[File:HFGenerate_03_GUI_TweakFractalTab_VariationMethodOptions.png|none|351px|Variation Method options]]
+{|
 {|
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 </ul>
-* '''Buoyancy from variation:'''  This setting adjusts how quickly the variation changes when the Variation method is set to Multi-scale modulator.  Note that this setting has no effect on Clamped and Unclamped multifractal variation methods.
 <ul>
-[[File:HFGenerate_29_Buoyancy.jpg|none|800px|Buoyancy examples]]
+{|
 </ul>
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 * '''Shader:''' This lets you assign a shader to be used to generate height information.
-* '''Position center: '''When checked, or enabled, the origin of the assigned shader is placed in the centre of the heightfield.
+* '''Position center: '''When checked, the origin of the assigned shader is placed in the centre of the heightfield.
-*'''Position lower left:''' When checked, or enabled, the origin of the assigned shader is placed at the lower left of the heightfield.
+*'''Position lower left:''' When checked, the origin of the assigned shader is placed at the lower left of the heightfield.
 * '''Position: '''  This setting is used to offset the assigned shader along the "X" and "Y" axis.  For example, entering a value of 500 into the "X" input will translate the heightfield 500 metres to the right.
 <!-- This setting can be used to change the area of the shader which is used to generate the heightfield data. It's an offset from the origin of the shader. For example if you set the X field of the setting to 500 the area of the shader covered by the heightfield is moved 500 m to the right. -->

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 </ul>
-* '''Buoyancy from variation:'''  This setting adjusts how quickly the variation changes.
+* '''Buoyancy from variation:'''  This setting adjusts how quickly the variation changes when the Variation method is set to Multi-scale modulator.  Note that this setting has no effect on Clamped and Unclamped multifractal variation methods.
 <ul>
 [[File:HFGenerate_29_Buoyancy.jpg|none|800px|Buoyancy examples]]

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 |}
 </ul>
-* '''Roughness:''' This controls the roughness of the generated terrain. Larger numbers are rougher.
+* '''Roughness:''' This controls the roughness detail of the generated terrain. Lower values result in a smoother terrain, while larger values result in more varied terrain details.
 <ul>
 {|
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 * '''Shader:''' This lets you assign a shader to be used to generate height information.
-* '''Position center: '''If this is checked the origin of the shader assigned above is placed in the centre of the heightfield. The image below shows a heightfield generated Simple Shape Shader position in the centre. The origin of the Simple Shape Shader is at the centre of the shape.
+* '''Position center: '''When checked, or enabled, the origin of the assigned shader is placed in the centre of the heightfield.
-*'''Position lower left:''' If this is checked the origin of the shader assigned above is placed at the lower left of the heightfield. The image below shows the same Simple Shape Shader used in the image above, but this time it's placed at the lower left.
+*'''Position lower left:''' When checked, or enabled, the origin of the assigned shader is placed at the lower left of the heightfield.
-* '''Position: '''This setting can be used to change the area of the shader which is used to generate the heightfield data. It's an offset from the origin of the shader. For example if you set the X field of the parameter to 500 the area of the shader covered by the heightfield is moved 500 m to the right.
+* '''Position: '''  This setting is used to offset the assigned shader along the "X" and "Y" axis.  For example, entering a value of 500 into the "X" input will translate the heightfield 500 metres to the right.
 <!-- The following image shows a Simple Shape Shader placed at the top left of the generated heightfield using the Position parameter. The heightfield is 10000 x 10000 and the shader is 5000 x 5000. The shader is positioned using its centre. The Position parameter was set to 2500, -2500 to put the shader in that location. -->
 <ul>

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 '''Node Description and Purpose:'''<br />
-The Heightfield Generate node can be used to generate heightfields. You can generate new heightfields based on fractals built into the node or you can use other shaders to generate height information for the heightfield.
+The Heightfield Generate node can be used to generate unique heightfield terrain based on a simple but powerful set of criteria. You can generate new heightfields based on fractals built into the node or you can use other shaders to generate height information for the heightfield. Use this for creation of heightfield terrains, especially in cases where you wish to apply heightfield-specific operations such as Erosion. Heightfields are of finite resolution and cover a specific area, unlike procedural terrains which have theoretically infinite detail and can cover an entire planet. However in Terragen 2 heightfields may be optionally rendered with procedural displacement to enhance detail. This is enabled by default.
 '''Node Type:''' Heightfield Operator<br />

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-[[Image:drex_module_178_image_0.png|485pxpx|Heightfield Generate]]
+[[Image:drex_module_178_image_0.png|center|Heightfield Generate]]
 ==Additional tabs for Heightfield Generate==
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 * [[Heightfield Generate - Use Shader Tab]]
 [[Category: Heightfield Operators]]

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