Houdini In Five Minutes 17: SOPs, Redshift & MOPs - Isocontours: Setting Up The Terrain

[@alexandera.7127]

This channel is underrated.

[@eonblue46]

It's widely regarded as a top tier houdini resource but they were on vimeo for many years before coming to youtube within the last year or so

[@clemlysergy3335]

Mind blown less than 2 mins in - I never realised how easily you can create isolines with the boolean. I am so going to overuse this technique!

[@focusmaya251]

thanks for this great help.plz let's know how this 1:59 2:00 warning mesg disappeared

[@DanielMeszarosProd]

Is there a reason you set up 'copy to points' here instead of the MOPS instancer before the booleans?

[@alan_schezar]

I can't understand the result I get from b-a boolean. Can you please elaborate? Thanks a lot!

[@dobis5692]

Anyone care to elaborate on why the normals have to be "fixed" with the [normal] node at 3:00?

[@aforestsociety]

the normals before you "fix" them have been forced to point down with the attrib create. Notice how the surface loses its detail in the viewport. By adding the normal node, you are recalculating them, allowing them to be in their natural direction, instead of the set downwards direction. You can see how once you recalculate, the detail comes back.

[@jpsunchase7165]

Interesting how the second boolean node works, B-A actually equals B-(-A), resulting in an intersection. Still wrapping my head around the geometry with a minus Y polyextrude though...

[@alan_schezar]

I am also thinking about how the boolean node works. It just doesn't make sense. If you switch the type to intersect it does't work as well. Accroding to both the help documentation and common sense, the result is an intersect.

[@jpsunchase7165]

@@alan_schezar It does make sense. It was the normals that bothered me resulting from negative polyextrude.

[@alan_schezar]

@@jpsunchase7165 Can you explain that a little to me? Thank you very much! I am confused by this

[@jpsunchase7165]

@@alan_schezar Boolean operation is calculated via the normals. Just check the normals of the A input.

[@alan_schezar]

@@jpsunchase7165 Oh! A is actually an infinitely big solid in that case. I understand now. Thanks!

[@SlobboVideo]

Yeah.... No I can't follow this. If this is a beginner tutorial then I'm screwed.

[@uwirl4338]

Don't worry, it's pretty complicated for a beginner tutorial. You'll get there. Keep on grinding!

[@ShawarmaBaby]

It is very complicated, Entagma level is high

[@dobis5692]

No worries, this is definitely not beginner level. It's number 17 in a series, and in the intro video, he explains that this particular course is targeted for people with experience in other modeling tools such as Maya, Cinema 4D, Blender, etc. Also, the pace of Entagma tutorials is really quick - usually too quick to watch and follow along at the same time without pausing the video.