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changes.mady.by.user Georgi Zhekov

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UI Expand
titleUI Path: ||Command panel|| > Modify tab > Rendering Rollout > Volumetric Options... button > Volumetric Render settings dialog > Smoke color rollout


 

 


Parameters

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Based on | darg – Specifies the source channel that will be used to determine the smoke color. By default, a uniform simple color set by the Constant Color option is used. This could also be a texture map, or read from the cache files - in that case the corresponding grid channel must be present in the cache files and remapped to the internal Volume Grid channels using the 3rd Party Channels Mapping dialog in the Input rollout.

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UI Text Box
typetip

 You can use the following controls in the color gradient:

Double click – Creates a new point or changes an existing one.
Left button drag over a point – Moves the point. If several points are selected beforehand, they move the same amount.
Left button drag over several points – Selects several points.
Middle button drag over the background – Drags the visible area.
Mouse wheel – Zooms in/out.
Right click – Displays a drop-down menu where you can add a point, edit or delete a selected point, and fit the entire gradient into the view. If multiple points are selected, they can be edited simultaneously.

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Anchor
PhaseFunction
PhaseFunction

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startIndex1
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borderStylenone

Phase Function = -0.5

Panel
borderStylenone

Phase Function = 0

Panel
borderStylenone

Phase Function = 0.5

Move the slider to see the example renders.

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Section
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width1%

 


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Phase Function = -0.5 (Backward Scattering) 

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width2%

 


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Phase Function = 0 (Isotropic Scattering)

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width2%

 


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width30%


Phase Function = 0.5 (Forward Scattering)

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Example: Phase Function with back lighting

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Section
 
Column
width25%

Column
width50%
Image slider
startIndex1
Panel
borderStylenone

Phase Function = -0.5

Panel
borderStylenone

Phase Function = 0

Panel
borderStylenone

Phase Function = 0.5

Move the slider to see the example renders.

Column
width25%

 

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Section
 
Column
width1%


Column
width30%


Phase Function = -0.5 (Backward Scattering) 

Column
width2%

 


Column
width30%


Phase Function = 0 (Isotropic Scattering)

Column
width2%

 


Column
width30%


Phase Function = 0.5 (Forward Scattering)

 

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The orange arrow represents a ray of light going through the volume and the possible scattering directions for the ray. 

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Example: Smoke Color Based on Speed

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 true
Section

 

UI Text Box
typetip

The Smoke Color can be based on any channel present in the cache files. The Speed channel can be used to drive the color of the smoke. It is automatically generated by Phoenix FD based on the Velocity Grid Channel. In this example, the slowly moving smoke is blue while the fast moving smoke is red to yellow.

videoautoplayloop
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SmokeColorBasedOnSpeed720p.mp4
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<iframe width="720" height="405" src="https://www.youtube.com/embed/TzD4Vh_DtzM?version=3&loop=1&playlist=TzD4Vh_DtzM" frameborder="0" allowfullscreen></iframe>