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The Pyro Source SOP converts its input geometry into points suitable for sourcing pyro and smoke simulations. This SOP adds specified attributes to the generated points, which can be rasterized and imported into desired DOP fields by the Volume Source node. Pyro Source also contains a handful of initialization presets for driving common simulation scenarios.
Geometry to Source From
Input geometry. When Mode is set to Surface Scatter or Volume Scatter, the geometry must correspond to a surface; in the latter case, the surface must also have a resolvable interior.
If provided, this geometry will be used to generate points. These points are then moved to conform with the current configuration of the deforming geometry.
Generated points, with the assigned attributes.
When specified, only the subset of the input geometry corresponding to this group is used.
What the Group is made of.
Configures the node according to the selected preset. Source Fuel can be
used to drive pyro simulations, whereas Source Smoke is meant for smoke
simulations. Source Color creates color (
Cd) and color density
Alpha) attributes that can be imported by the
Volume Source node using the
Controls which points are exported by the node.
Points are scattered on the surface of the input geometry.
Points of the incoming geometry are used unchanged.
Points are scattered in the interior of the input geometry.
When Mode is set to Surface Scatter or Volume Scatter, this
parameter controls the density of seeded points; in Keep Input mode,
value of Particle Separation is only used to calculate the
Controls the scale of exported points. The
pscale attribute is set to the
product of Particle Separation and Particle Scale.
If the input already contains a
pscale attribute, the values will not
be changed by this node.
Physical size of the neighborhood used for deforming the scattered points.
Only available when a rest geometry is provided and Mode is set to
If fewer than this number of points are found in the neighborhood for the
purpose of deforming points, the search radius is increased. Only available
when a rest geometry is provided and Mode is set to
An upper bound on the neighborhood size used for deforming points. Only
available when a rest geometry is provided and Mode is set to
Count of numerical attributes to create for the exported points.
The attribute to add to source points. The attribute can be selected from the list of commonly-used options or a custom one can be created.
This option can be turned on in Custom Attribute mode to create a vector-valued attribute; if disabled, a scalar attribute is added.
Name of the created attribute.
This value is used to initialize newly-created attributes. This parameter is not used for already-present point attributes.
The final exported value of the attribute is scaled by this value.