There is a “Krakatoa Toolbar” category in the Customize UI dialog that provides most options as MacroScripts. You can add those you think you need to a toolbar and use them instead of the Main GUI. But the things you will be able to do with Krakatoa will be very limited that way.
We are not adding buttons for the fun of it, but because with great power comes great … flexibility. 
I just posted Part 1 of a Krakatoa NPR demo:
http://www.youtube.com/watch?v=bCE09lNV9pY
It discusses shading of particles using MagmaFlow including Lambert shading and simple Toon shading without the creation of actual scene lights.
That’s hardcore! I always wondered how this shading works but was lazy to find out Thanks Bobo :bounce:
Thanks that was very enlightening this is a great series you have going on very educational, as always.
Here are some results produced during the preparations for Part 2 of the NPR video.
Try to figure out how to do these before I post the tutorial…
http://www.scriptspot.com/bobo/krakatoa/kra_bunny_toon_ink2.mov
http://www.scriptspot.com/bobo/krakatoa/kra_bunny_toon_pencil4strokes.mov
http://www.scriptspot.com/bobo/krakatoa/kra_bunny_toon_penci.mov
http://www.scriptspot.com/bobo/krakatoa/kra_bunny_toon_charcoal.mov
http://www.scriptspot.com/bobo/krakatoa/bunny_toon_smearstrokes.mov
Haven’t been able to replicate them but some thoughts :
The ink looks nice very solid, thinking just a real close variant to the original tut, with the gradient something like 0-10 black 11-100 white?
The four pencil stroke looks like your messing with four steps of motion blur
LOL no idea with the pencil, something with a cellular shader?
The charcoal is hard to tell, a falloff in density?
The smear strokes look like your pushing along a vector.
I just posted Part 2 of the NPR tutorial.
http://www.youtube.com/watch?v=2R34gBnaECg
It shows only the Ink (same as Part 1 just without the Paint) and one of the many possible pencil styles based on shifting particles along a velocity vector perpendicular to both the camera view axis and the normal, which happens to be the tangent of the outline…
Johnny’s guesses were pretty close to the actual techniques used… Good job!
Interesting, I was wondering how to get/set the vector length, good practical exercises for the “to space” conversion ops. Thanks
Still really digging on the Holy Grail of pFlow 
A small note about that - although it does not affect that specific example much, it would make more sense to switch the FromView operator to “Vector” mode since it operates on a vector and not on a point. When applying the transformation in Vector mode, the translation part of the matrix is set to [0,0,0]. So for most other variations of that example (e.g. the slanted strokes case I showed a Quicktime of), you would have to use Vector mode of the transform operator.
I think I understand, so this would get you an actual direction to use, is that correct?
We want the vector [0,0,-1] to be taken from View Space into World Space. In the process, we don’t want to translate it, just rotate it so it points along the camera. If you want to use the vector [1,1,0] to define a 45 degrees vector in the image plane and then want to shift particles in world space so that they still coincide with the image plane no matter where the camera is, you MUST switch the FromView to “Vector” mode, otherwise the value will depend on where the camera position is relatively to the origin and the vector will not be parallel to the image plane.
In the video example, due to the placement of the PRT Volume and the viewer, using Point mode instead of Vector did not mate a big difference to the [0,0,-1] vector, but it is indeed a mistake. I am just too lazy to rerecord the whole thing, so I might just add a bubble and explain it on screen in the current video…
Bobo,you are good man!Thanks for your YouTube videos!
So unluckyly ,i can’t open the website!Could i consult you some question？
When i want to save sequences to render by Krakatoa,it shows error:
3ds max attempted to crash,but the Krakaoa GUI caught the exception.
I only render one Frame at one time.It was why ?
By the way,how to render shadow channel that the particles on the geometry by Krakatoa.For example,the shadow that the particles on the ground,and the ground is matte.
Thanks a lot!
Thanks so much Bobo for adding Closed Captions/Subtitles – you made the Krakatoa videos accessible for Deaf artists including myself. I can now follow without any hassles. 