multiply geometry álong a grid doesn't work!!

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Permalink Reply by David Rutten on April 22, 2010 at 12:02pm

Your shape in fact consists of multiple shapes. Grasshopper will move the first sub-shape using the first motion vector, and the second sub-shape using the second motion vector etc. etc.

You'll have to use a Cross Reference Matching in the Move component, since you want to apply ALL your motion vectors to ALL your shapes.

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David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by kipodi on April 23, 2010 at 5:42am

well that worked but the deeper question in this is how do I join my curves into one group that will act as one piece so I could scale the whole shape with an attractor point like I can do with a one geometry shape like a circle..instead of the circle I want to put my shape..is it really that difficult?I've tried everyhting I know but it doesn't work because it splits the shape up and doesn't preform the action on each group individually..

Permalink Reply by David Rutten on April 23, 2010 at 6:27am

No grouping is available as of yet. You'll have to treat all objects separately.

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by kipodi on April 23, 2010 at 10:18am

no kidding!??my whole project is based on it :(,I"m a fourth year architecture student and we're having a digital studio in which my project is made with grasshopper..I added a picture of what I had managed to do which is an improvement..but I was wondering if you know how I could scale the shape as a whole shape and not have each shape scale differrently..I don't understand the logic of this. I used as scaling point a center point of circles surrounding my original shape ..please help

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Permalink Reply by David Rutten on April 23, 2010 at 11:16am

Well you should be able to achieve the same results, it's just a bit more involved this way.

Normally you'd transform a shape [A] by creating a single motion vector [M]. If you want to create a grid, you create multiple motion vectors [M0, M1, M2, M3...M99]. If you have not just 1 shape but -say- 4 shapes [A, B, C, D], then your list of motion vectors will no longer work as expected. Specifically, [A] will be moved by [M0], [B] will be moved by [M1], [C] will be moved by [M2], [D] will be moved by [M3]. At this point you've run out of shapes, but you still have 96 motion vectors left over. So the default behaviour is to apply the next vector [M4] to [D] again, and then [M5] to [D] and so on.

You need to adjust your motion vectors so they can be mapped onto your objects. Basically, this means Grafting your objects, so instead of a single list [A, B, C, D], you end up with 4 distinct lists [A], [B], [C] and [D]. Now, ALL vectors will be applied to every individual piece of geometry.

Have a look at the Graft component and use the ParamViewer to see the 'before' and 'after' layout of your data.

--
David Rutten
david@mcneel.com
Poprad, Slovakia