scale bunch of vertices

[kiriri]

So I'm trying to manually create some very simple shapekeys here. Is there an action that can scale vertices or do I have to manually generate a median point and then calculate the transform as individual add positions, as constrained to the distance vector to the median point?
Is there maybe a way to localize the system to the median point being the 0 - point? Then I'd just have to multiply each position vector by a certain value.

Anyways, I'd take any solution As long as it'll scale the specified vertices.

[jeanfabre]

Hi,

 What is a shapekey? sorry, not english:)

 I don't think you can simply scale a bunch a vertices like that. You will need to build a small set of tools to achieve this. For example, storing the vertices position in a list, and maybe reference them from your median point, and then apply a scale factor to them, then inject back them vertices position in the mesh itself.

The tuff part will be for you to get the vertice indexes. I can write a little action that would store the vertice list of a mesh into an array, so that you can then work on it right from within playmaker if you want. maintaining another array of indexes, that is the vertice you want to scale. And then an action to inject back the vertice array into the mesh to apply your changes.


Bye,

 Jean

[kiriri]

a shapekey is another word for a morphkey or vertex point animation state. I for example have a mesh with a hole in it, and I want the hole to get bigger and thinner, but I can't use a skinned mesh to do it, because I never know beforehand which vertices I want to transform, and which not. So the array approach fits me quite well.
And a vertex to array action would be damn useful anyways Oh, and I wanted to note, I started implementing the bounding box function, I'll probably have it done somewhere next week (since I'm slow and the bounding box is actually a bigger thing than I thought ), just so you know

[jeanfabre]

hi,

 Ok. Get back to me next monday if you don't hear from me then, cheers.

Bye,

 Jean

[jeanfabre]

Hi,

 Had some additional thoughts about this. Have you checked MegaFiers? yes, it's "expensive" but it is SO POWERFUL for mesh manipulation that I am pretty sure it has some build systems to do just what you want. I would suggest you check with them your requirements. I am sure a FFD box would work just fine for what you want.

bye,
 
Jean