Coords of transformed vertices

vvvv beta general
1

hi,
I’m trying to create trails originating from the vertices of a moving mesh. is there a way to track the coordinates in space of the vertices of a mesh?

thanks to everybody.

2

With Mesh (EX9.Geometry) Split you may access every single Vertex. but perhaps is BoundingBox (EX9.Geometry) Mesh the better choice for you.

3

thanks kalle.
I tried Mesh(EX.Geometry)Split but it seems to output the coordinates of the untransformed mesh. Here’s the patch I.m trying to build.
thanks again.

trails.v4p (6.6 kB)

4

ApplyTransform (Transform) Vector is your friend i think.

applytrails.v4p (7.2 kB)

5

Well, that’s the the thing I was searching for!
Many thanks Kalle.

6

This method doesn’t seems really spreadable…If yes, how??..I’m missing something here…please help!

7

should be a bit closer now, but taking care of indices is missing.

somehow BinSize seems to be the keyword.
and the use of IOBox (Node) to aplly BinSizes to Transformations. i made a tutorial for this, can be found at User Tutorials

applytrails.v4p (9.3 kB)

8

Ok, i’m not very familiar with bin sizes…seems to work but still a bit buggy!

9

Well, you have the transform off the origional Mesh, so I just used GetMatrix, a Queue and a SetMatrix to produce a trail.

MatrixTrails.v4p (12.9 kB)

10

aaaaaaaaaaaah,

i totally forgot the line has a transform input!!!

west,
sometimes i hate you :)

perhaps you also find a simpler solution here:

http://vvvv.org/tiki-view_forum_thread.php?forumId=7&comments_parentId=15342#threadId15407

11

Tx guys, both methods are good…but one or two more questions :
Why in this case can we see lines appearing chaoticly when moving view inside the object…and why flickering when using exactly the top view?

applytrails_perlin.v4p (19.6 kB)