Deborah R. Fowler
Wrangle Nodes
compared with VOPS
Posted on Jan 19 2019
Updated on Jan 19 2019
If you are not familiar with VEX and point wrangles please read Wrangle Node Example VEX Basics
Vex snippets are similar to C++ code (take VSFX 375), however there is also a pictoral version of VEX called VOPS.
For those of you coming from an Unreal background, it looks similar to Blueprint.
To compare we will look at the phyllotactic example in vops
The phyllotactic pattern is based on setting points in a planar pattern according to two equations, and expressed in cartesian coordinate look like
x = cval * sqrt(n) * cos(angle * n);
y = cval * sqrt(n) * sin(angle * n);
Where angle is the golden angle. Note that both vex and vops require the angle to be in radians, not degrees.
Click here for more information about the phyllotactic pattern.
Comparing the versions we created in VEX, below is a version in VOPS. Remember that Vex/Vops IMPLICITLY loop thru all points.
For completeness, I have included below a version that uses an EXPLICIT loop (details only version of vops, similar to VEX).
I love wrangle nodes and vex and would probably not use the version below personally, but have included it as Houdini allows users to create solutions make the most sense to them.
