krakatoa geometry lookup

hello

thank you for your great support.
I have a question about krakatoa geometry lookup.

I have a sphere like object, and another object that I want to populate it over the sphere. like a cylinder.

I know this operator is powerful . I simply can’t make It work. cylinders are pointing in wrong direction and …

please with a simple example file help me out!
show me the real workflow
I really need to know

thank you in advance

The operator assumes that the X axis of the particle shape will be pointing along the Normal. This is because Particle Flow assumes the X axis to be the leading axis when rotating an object along a Velocity, too. And we render or save the X axis of a particle as its Normal in Krakatoa.

So if you
*Create a default Geosphere
*Create a Cone
*Create a Standard PFlow
*Add a Position Object operator and pick the Geosphere
*Set it to All Vertices
*Set the Particle count to 162, Viewport % to 100
*Remove the Speed and Rotation operators.
*Replace the Shape with Shape Instance
*Pick the Cone as Shape Instance source
*Add a Krakatoa Geometry Lookup, pick the Geosphere, check Use in Normal Vector and leave as TM
*Switch Display to Geometry

your cones will be aligned incorrectly with their X axis along the normal.

If you add an XForm modifier, go to Sub-Object Gizmo level and rotate at 90 degrees about Y, your cone will point along the X axis and you will get spikes on your Geosphere!

If you want to accelerate the particles along the Normals, you can check “Apply Only Once” in the Lookup operator, then add a Speed By Surface, enter 300 Variation 200, pick the Geosphere, and your particles will fly away from the surface Normals…
(Here is frame 2 of my test animation)

Btw, you can do the same using a DataOp in Max 2014.

thank you Bobo!

I did exactly as you mentioned:

*Create a default Geosphere…


*Switch Display to Geometry

but you can see, why I am really confused.
the geometries are pointing upwards … not on the surface like your first image.


it is very basic that these cones should be on the surface not upwards, why is that happening?
thank you again!

Can you upload the scene file? ZIP it and attach to your post. You must be missing a step.

Also, the operator does not work in Evaluation mode. So if you are running without a license, it won’t do a thing!
thinkboxsoftware.com/krak-evaluation-mode/

very nice…
It is working now. :slight_smile:

I’ve been given an evaluation copy, I requested for a full version and they got it for me.
It might be off topic, but just in case if Krakatoa is unavailable, how can this be done using (formerly box 3) in Max 2014?

thank you in advance