Collision Strength Map?

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Old 04 April 2013   #1
Collision Strength Map?

Hi all,

Has anyone managed to use a Collision Strength Map (nCloth)?

To me, it seems it just doesn't work! Is there any special trick?

Tried with a simple scene, made a plane, attached a white texture with a black hole in the middle, connected it to CollideStrengthMap.
No effect. Everything collides everywhere.

Thanks for any input.
 
Old 04 April 2013   #2
Did you made the connection by hand or did you let Maya do the connection for you ?

it seems that all maps on nCloth needs outAlpha as input.
i ran in a lot of trouble when using inputAttract lately. it seems that when you remap something like a noise or other stuff the map does not work properly.

and !!! -> its really weird or strange, some maps only work when texturing in the viewport is on... and you dont have "use default material" checked.

cheerz
deHeavy
 
Old 04 April 2013   #3
Partial success!
It works when I connect the outAlpha from the texture.

However, I need it to go through a Projection first. (My collision object is moving around, but I need the "collision hole" to stay put in space)

I've connected the texture properly to the Projection, but it doesn't function.

Thanks deHeavy! Now I need to find the last piece of the puzzle...
 
Old 04 April 2013   #4
I'm pretty sure as with all dynamics. the procedural and projected textures need to be baked first before you can use them.
 
Old 04 April 2013   #5
noticeus, thanks for your input.
In that case I have to abandon my approach and rethink.

I need to disable collisions in a specific place, while the collider (not visible) moves in and out. Other parts of the collider need to be colliding at all times, so I can't simply animate Collide Strength. And it must be a single object.

Tricky thing.
 
Old 04 April 2013   #6
you could try SOuP and create a bounding object to transfer vertex color to your collision object which could then be used as a collisionMap or you could delete faces based on the bounding object.
 
Old 04 April 2013   #7
Thanks, but it's much to complicated for such a simple thing. I will be using an Air field to push the particles instead of by a moving surface.

That SOup stuff looks cool, I'd like to understand it some day.
 
Old 04 April 2013   #8
Not in front lf maya atm, but you can use the constraint to animate collide on off of a set of vertices.
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Old 04 April 2013   #9
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