VEX101 - Transformation Matrix Intuition
Added 2018-08-02 09:01:42 +0000 UTCUnder the hood of most 3D apps, transformation matrices are an integral part of how objects are moved (and scaled and rotated and sheared) in three dimensional space.
In Houdini sometimes you'll be confronted with a transformation matrix too - this is a basic primer on what a transformation matrix does and how we can manipulate it in VEX.
Comments
The intrinsic transformation matrix from the tube primitives output by the wireframe SOP can be used too: <a href="https://drive.google.com/open?id=1nfEX7ITQYG9kO0uZnav3EpIUhaOwAb5j" rel="nofollow noopener" target="_blank">https://drive.google.com/open?id=1nfEX7ITQYG9kO0uZnav3EpIUhaOwAb5j</a>
John Kunz
2018-08-11 21:12:23 +0000 UTCThis is easily the clearest matrix explanation I have ever had the pleasure of digging through! Great work Mo!!!
Mr Racecar
2018-08-06 09:47:50 +0000 UTCThanks ! Will try this one now.
Hoang Anh Nguyen
2018-08-03 22:04:08 +0000 UTCThanks for the lesson! Very helpful!
Dim Baidachnyi
2018-08-03 15:44:31 +0000 UTCActually this could work (almost) without any VEX at all: <a href="https://www.dropbox.com/s/htm7m66km4u983m/copy_to_edge_centers_01.hip?dl=1" rel="nofollow noopener" target="_blank">https://www.dropbox.com/s/htm7m66km4u983m/copy_to_edge_centers_01.hip?dl=1</a> Althoug if you'd just want tubes along edges - use the wireframe-SOP. That might be the quickest way :) Cheers, Mo
Entagma
2018-08-03 10:26:10 +0000 UTCWeird how your geometry got triangulated near the end.... anyway, I look forward more topics on transformations like this, particularly dealing with quaternions, going from matrix to quaternion, quaternion to matrix and so on. Cheers.
Charles Vidaud
2018-08-03 09:39:33 +0000 UTCGreat result with this techniques! I have a question, do you guys how to copy a tube or any objects to edges of another object, just like cloner system in C4D, in that you can chose to clone one object onto edge and scale it fit to the edge length ? I already tried with some nodes and VEX but still so far from final result.
Hoang Anh Nguyen
2018-08-03 08:36:50 +0000 UTCThanks for this great intro to Matrix! It is really clear and it looks less complicated than I thought when it's well explain like that. Can't wait to see further explorations or techniques with Matrix in Vex.
julien morneau
2018-08-02 10:48:01 +0000 UTCIndeed 3Blue1Brown is a fantastic channel! Everyone who'd like a more in-depth look into the math involved check it out: <a href="https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw" rel="nofollow noopener" target="_blank">https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw</a>
Entagma
2018-08-02 09:50:41 +0000 UTCYo! I'm guilty of not yet having watched this fillum, which I'm SURE will be a thing of beauty; though I've been reminded of another wonderful series of videos titled "Essence of linear algebra", on Youtube channel 3Blue1Brown. So watch the above, then the Youtube ones. In fact, watch all the things, twice. Love you guys. xx
Nick Wood
2018-08-02 09:33:30 +0000 UTC
