Heightfield Merge: Difference between revisions

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Added descriptions and example image for all settings. Still need descriptions and math for Merge mode options.
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[[Image:drex_module_187_image_0.png|485pxpx|Heightfield Merge]]
[[File:HFMerge_00-1_GUI.png|none|470px|Heightfield Merge]]


'''Node Description and Purpose:''' Heightfield Merge allows you to merge two heightfields together based on simple settings that control the amount of heightfield mixing and the type of mixing method used.


== Overview ==
Heightfield Merge allows you to merge two heightfields together based on simple settings that control the amount of heightfield mixing and the type of mixing method used.
These images were used as heightfields in the examples below.
{|
|-
| [[File:HFMerge_23_HFGradientSteps.jpg|none|200px|Gradient image used as Heightfield Input]] || [[File:HFMerge_56_HFGradient.jpg|none|200px|Gradient image used as Heightfield A]] || [[File:HFMerge_25_HFPlasmaNoise.jpg|none|200px|Noise pattern image used as Heightfield A]]
|}
'''Settings:'''
* '''Name: '''This setting allows you to apply a descriptive name to the node, which can be helpful when using multiple Heightfield merge nodes in a project.
* '''Heightfield A: ''' The heightfield file assigned to this setting will be merged with the heightfield connected to the Input node. 
* '''Mix amount: '''  This setting controls how much of “Heightfield A” is merged with the heightfield connected to the input node.  A value of 0 means no merge will take place and the heightfield connected to the input node will be passed through without any modifications.  A value of 1 means that “Heightfield A” will be merged completely with the other heightfield by whichever method is chosen below.
<ul>
[[File:HFMerge_55_MixAmount.jpg|none|800px|Mix amounts 0 to 1]]
</ul>
* '''Merge mode: '''This setting provides eight options for merging the two heightfields together.
<ul>
[[File:HFMerge_01_MergeModeOptions_GUI.png|none|262px|Merge mode options]]
* <u>Mix: </u>
<ul>
{|
|-
| [[File:HFMerge_46_MergeModeMix.jpg|none|400px|Merge mode = Mix]] || [[File:HFMerge_37_MergeModeMix.jpg|none|400px|Merge mode = Mix]]
|}
</ul>
* <u>Add: </u>
<ul>
{|
|-
| [[File:HFMerge_47_MergeModeAdd.jpg|none|400px|Merge mode = Add]] || [[File:HFMerge_38_MergeModeAdd.jpg|none|400px|Merge mode = Add]]
|}
</ul>
* <u> Subtract: </u>
<ul>
{|
|-
| [[File:HFMerge_48_MergeModeSubtract.jpg|none|400px|Merge mode = Subtract]] || [[File:HFMerge_39_MergeModeSubtract.jpg|none|400px|Merge mode = Subtract]]
|}
</ul>
* <u> Difference: </u>
<ul>
{|
|-
| [[File:HFMerge_49-2_MergeModeDifference.jpg|none|400px|Merge mode = Difference]] || [[File:HFMerge_40_MergeModeDifference.jpg|none|400px|Merge mode = Difference]]
|}
</ul>
* <u>Highest (raise): </u>
<ul>
{|
|-
| [[File:HFMerge_50_MergeModeHightest.jpg|none|400px|Merge mode = Highest]] || [[File:HFMerge_41_MergeModeHighest.jpg|none|400px|Merge mode = Highest]]
|}
</ul>
* <u> Lowest (cut away): </u>
<ul>
{|
|-
| [[File:HFMerge_51_MergeModeLowest.jpg|none|400px|Merge mode = Lowest]] || [[File:HFMerge_42_MergeModeLowest.jpg|none|400px|Merge mode = Lowest]]
|}
</ul>
* <u> Multiply: </u>
<ul>
{|
|-
| [[File:HFMerge_52_MergeModeMultiply.jpg|none|400px|Merge mode = Multiply]] || [[File:HFMerge_43_MergeModeMultiply.jpg|none|400px|Merge mode = Multiply]]
|}
</ul>
* <u> Screen: </u>
<ul>
{|
|-
| [[File:HFMerge_53_MergeModeScreen.jpg|400px|none|Merge mode = Screen]] || [[File:HFMerge_44_MergeModeScreen.jpg|none|400px|Merge mode = Screen]]
|}
</ul>
</ul>
[[Category: Heightfield Operators]]
[[Category: Heightfield Operators]]

Revision as of 10:53, 14 January 2021

Heightfield Merge
Heightfield Merge


Overview

Heightfield Merge allows you to merge two heightfields together based on simple settings that control the amount of heightfield mixing and the type of mixing method used.

These images were used as heightfields in the examples below.

Gradient image used as Heightfield Input
Gradient image used as Heightfield Input
Gradient image used as Heightfield A
Gradient image used as Heightfield A
Noise pattern image used as Heightfield A
Noise pattern image used as Heightfield A


Settings:

  • Name: This setting allows you to apply a descriptive name to the node, which can be helpful when using multiple Heightfield merge nodes in a project.
  • Heightfield A: The heightfield file assigned to this setting will be merged with the heightfield connected to the Input node.
  • Mix amount: This setting controls how much of “Heightfield A” is merged with the heightfield connected to the input node. A value of 0 means no merge will take place and the heightfield connected to the input node will be passed through without any modifications. A value of 1 means that “Heightfield A” will be merged completely with the other heightfield by whichever method is chosen below.
    Mix amounts 0 to 1
    Mix amounts 0 to 1
  • Merge mode: This setting provides eight options for merging the two heightfields together.
    Merge mode options
    Merge mode options
    • Mix:
      Merge mode = Mix
      Merge mode = Mix
      Merge mode = Mix
      Merge mode = Mix
    • Add:
      Merge mode = Add
      Merge mode = Add
      Merge mode = Add
      Merge mode = Add
    • Subtract:
      Merge mode = Subtract
      Merge mode = Subtract
      Merge mode = Subtract
      Merge mode = Subtract
    • Difference:
      Merge mode = Difference
      Merge mode = Difference
      Merge mode = Difference
      Merge mode = Difference
    • Highest (raise):
      Merge mode = Highest
      Merge mode = Highest
      Merge mode = Highest
      Merge mode = Highest
    • Lowest (cut away):
      Merge mode = Lowest
      Merge mode = Lowest
      Merge mode = Lowest
      Merge mode = Lowest
    • Multiply:
      Merge mode = Multiply
      Merge mode = Multiply
      Merge mode = Multiply
      Merge mode = Multiply
    • Screen:
      Merge mode = Screen
      Merge mode = Screen
      Merge mode = Screen
      Merge mode = Screen

A heightmap or heightfield is an array of height values, usually in a grid which describe the height at specific points in a defined area. Heightfields are used to represent real-world and virtual terrain in a specific, easily converted format. Most heightfields can be represented as simple image data in grayscale, with black being minimum height and white being maximum height.

A single object or device in the node network which generates or modifies data and may accept input data or create output data or both, depending on its function. Nodes usually have their own settings which control the data they create or how they modify data passing through them. Nodes are connected together in a network to perform work in a network-based user interface. In Terragen 2 nodes are connected together to describe a scene.

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