Gas Field Vop
dynamics node
Runs CVEX on a set of fields.
See also: Volume Mix, Iso Offset, Iso Surface
The Volume Vop operation runs CVEX over a set of fields. The CVEX shader can be defined as a .vfl file, a Shop, or by building a CVEX VOP network inside this node. The last is the most straightforward approach.
Binding to the CVEX script controls what values are passed to which parameters of the script. The default AutoBind will use the name of the fields to determine which parameter they should override. If that parameter is marked as exported in the CVEX script, the field will be written to. Otherwise, the field is just read to get the paramater’s values.
The CVEX script is applied once for each exported field. Locally defined ix, iy, iz, resx, resy, resz, orig, and P bindings are created that refer to the index, resolution, center, and current voxel position of the currently exported primitive.
The parameters list starts with parameters created by the CVEX script’s parameters. If the parameter is meant only to be bound to a field, it can be hidden by setting the invisible flag on the VOP parameter.
Parameters
Vex Setup
|
Vex Source |
Where to get the CVEX script from. Myself will refer to the VOP network built inside this node. Shop will use the Shop Path and Script will load the .vex file specified in the script. |
|
Shop Path |
The CVEX Shop to apply. |
|
Script |
The CVEX script to apply. |
|
Re-load VEX Functions |
When in script mode, this reloads any .vex files to account for updates made outside of Houdini. |
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Compiler |
The command line used by VOPs to compile the inside of this node. |
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Force Compile |
Trigger a recompile of the VOP network. |
Volume Bindings
|
Autobind by Name |
Will use the name of the field to determine which field binds with which parameter. A scalar field named “foo” will be bound to the float parameter “foo”. A vector field “foo” will be bound to the vector (three float) parameter “foo”. A matrix field “foo” will be bound to the the matrix (three by three) parameter “foo”. An index field named “foo” will be bound to the integer paramater “foo”. |
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Primitive, Name |
Manually specifies the bindings of each field. |
Usages in other examples
| Example name | Example for |
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