Specifies which vector operation to perform on the vectors.
Magnitude of A
Computes the magnitude of A and replaces the vector channels with a single scalar channel, ‘len’. If more than one vector is processed, the wildcard replacement is appended to ‘len’ (ie, (tx3,ty3,tz3) would produce len3). Only one input is required for this operation; the second input is ignored.
Normalize A
Reduces the vector to a unit-length vector. Only one input is required for this operation; the second input is ignored.
Distance between A and B
Computes the straight-line distance between A and B, as if they were points. This replaces the vector channels with a single channel named ‘dist’.
A dot B
Computes the dot product of a vector from input 1 (A) with a vector from input 2 (B). If more vectors exist in A than B, the B vectors cycle back to the first vector. This replaces the vector channels with a single channel named ‘dot’.
Normalized A dot B
Computes the dot product of A and B, but normalizes A and B first. This replaces the vector channels with a single channel named ‘dot’.
Angle between A and B
Computes the angle between the two vectors, A and B, in degrees. This replaces the vector channels with a single channel named ‘angle’.
A cross B
Computes the cross product of A and B. Both vectors must have exactly
three components. The cross product is the vector that is orthogonal to both A and B.
Scalar Project B onto A
The scalar projection of B onto A determines the length of the vector produced when B is projected onto A. This replaces the vector channels with a single channel named ‘proj’.
Vector Project B onto A
Projects the vector B onto the vector A, so that the result is parallel to A, and the magnitude is proportional to the angle between A and B.
Add
Adds vector A to B.
Subtract
Subtracts vector A from B.
Reverse Subtract
Subtracts vector B from A.
No operation
Passes vector A through as-is. Generally only useful when used with Perform Vector Test to compare vectors.
Vector Mask
A set of patterns which describe the members of the vectors. A wildcard * can be used to match more than one vector. A single vector will contain one channel from each pattern with the same wildcard replacement (ie, tx* ty* tz* would process vectors like (tx1,ty1,tz1) and (txa,txb,txc).
Vector Mask B
An optional parameter which sets the vector mask for vectors in the second input (B vectors), in case they happen to represent a different vector quantity (such as N, P or V). If disabled, the Vector Mask is used.
Vector Mask C
The vector mask for the third comparison input, similar to the above two. If disabled, the Vector Mask is used.
Align
For two-input vector operations, this parameter specifies which frame range to use if the inputs’ frame ranges differ, and how to sample the inputs.
Extend to Min/Max
Find the earliest start and latest end, and extend all inputs to that range using the extend conditions.
Stretch to Min/Max
Find the earliest start and latest end, and stretch every input channel’s start and end to that range.
Shift to Minimum
Find the earliest start and shift all input channels so they all start at that index. All channels are extended to the length of the longest one.
Shift to Maximum
Find the latest end and shift all input channels so they all end at that index. Extend all channels to the length of the longest one.
Shift to First Interval
Shift all input channels to the start of the first channel and sample all inputs using the first input’s range.
Trim to First Interval
Trim all input channels to first channel’s range.
Stretch to First Interval
Stretch all input channels to the first channel’s range.
Trim to Smallest Interval
Trim all input channels to the smallest start/end interval. The start and end values may not come from the same channel.
Stretch to Smallest Interval
Stretch all channels to the smallest start/end interval. The start and end values may not come from the same channel.
Test
A comparison test can be run after the initial vector operation, which can remove vectors that fail the test or produce a channel containing the samples which passed or failed for each vector.
Perform Vector Test
Enables the vector test on the result of the vector operation, which compares the result to a constant value or another input.
Result Vector Test
Describes how the vector is compared, with one of the inequality operations listed.
Test Against
The vector result is compared to a constant (Vector Constant) or vector/scalar channels from one of the three inputs.
Vector Constant
This parameter is the constant when Test Against is set to Constant. It will either have all fields enabled (if the vector result is a vector quantity) or only the first field enabled (if the result is a scalar).
Test Result
The output of the vector test can be the original vectors, modified vectors, or an on/off channel containing the test results.
Keep Original Vector A
If the test passes, the original A Vector is kept in the output. If the test failed, the vector channels are removed. This is useful for eliminating points or directions that fail the test in order to thin out the number of channels for faster downstream cooking.
Keep Result Vector
If the test passes, the result of the vector operation is kept in the output. If the test failed, it is removed.
Pass/Fail Channel
A single channel is created called ‘test’ for each vector, with the suffix of the vector appended to it. This channel is 1 for samples where the test passed, and 0 for where it failed. This can be used for controlling a Blend or Switch CHOP.
Pass If
When determining whether to keep or discard a channel (when Test Result is Keep Original Vector or Keep Result Vector), the test may pass for some samples and fail for others. Since a channel can only be entirely removed or entirely kept, vector channels that pass on some samples and fail on others must be resolved.
All Samples Pass
All samples in the vector test must pass the test in order for the vector channels to be kept.
One Sample Passes
Only one sample needs to pass the vector test in order for the vector channels to be kept.
A Fraction of the Samples Pass
A specified fraction (from 0.0 to 1.0) of the samples must pass the test in order for the vector channels to be kept.
Pass Fraction
If Pass If is set to ‘Fraction of the Samples Pass’, this sets the fraction of samples which must pass in order for the test to be considered successful. Zero means none need to pass, while 1.0 means that all samples must pass.
