Volume Mix surface node

Combines the scalar fields of volume primitives.

All

Parameters

Local variables

See also: Volume Vop, Iso Offset, Iso Surface

The Volume Mix operation manipulates the scalar data associated with volume primitives. For each pair of volume primitives in the source group and the mix group, the given calculation is performed and the results stored in the source group’s primitive. Note that the volumes do not need to have the same orientation or resolution, the second volume will be sampled at the orientation and resolution of the first volume.

The copy mode allows you to resample a volume into a different resolution or orientation.

Parameters

Source Group

The volume primitives to be used from the first input.

Mix Group

The volume primitives to merge in from the second input. If there is no second input, this group will be found from the first input.

Mix Method

Each voxel of each volume primitive in the source group will be mixed with the corresponding voxel of the corresponding volume primitive of the mix group according to this mix method. A refers to the first input’s value, B refers to the second input’s value. If there is no second input, B will be found from the corresponding volume of the first input.

Copy	result = B
Add	result = A + B
Subtract	result = A - B
Multiply	result = A * B
Divide	result = A / B
Invert	result = -A
Max	result = max(A, B)
Min	result = min(A, B)
Clamp	result = clamp(A, rangemin, rangemax)
Blend	result = A (1-blend) + B blend
User	result = Value Expression

Range

Defines the range to which the volume’s voxel values will be clamped when the mix method is set to Clamp.

Blend

Defines the mixing of the two volumes in Blend mode. 0 will use the first volume, 1 will use the second volume.

Value

Each voxel each volume primitive of the source group will be directly assigned this value if the mix method is set to User. The expression can use local variables to allow for arbitrary expressions.

Tip

It can be considerably faster to use a Volume Vop to manipulate the volume than an expression.

Local variables

X, Y, Z	Position in space of the voxel being processed.
IX, IY, IZ	Index of the voxel being processed.
V	Value of the volume from the first input.
V2	Value of the volume from the second input.
BBX, BBY, BBZ	Relative location of the voxel in terms of the first input.
BBX2, BBY2, BBZ2	Relative location of the voxel in terms of the second input.

Usages in other examples

Example name	Example for
FieldForceSmoke	Field Force dynamics node	Load \| Launch
ReferenceFrameForce	Reference Frame Force dynamics node	Load \| Launch
TwoColourFire	Smoke Object dynamics node	Load \| Launch
PaintedGrog	Fluid Object dynamics node	Load \| Launch
FillGlass	Fluid Object dynamics node	Load \| Launch