Need Help: Inner Glow with Gradient component

I'm trying to create a closed curve and give it an inner glow similar to this:

I want it to work on asymmetrical closed curves as well.

Thoughts on how to approach this?

Ideally I would like to be able to change the scaling of the gradient, so that there may be a touch of white in the center (if the gradient is set to go from black to white) to a lot of white towards the center.

Thanks,

Matt

Replies to This Discussion

Permalink Reply by David Rutten on July 1, 2012 at 8:39am

Create a mesh from the curve with sufficient accuracy to display the gradient smoothly.
Compute the distance from every mesh vertex to the original curve.
Compute the entire range of distances, use as gradient range.
Compute gradient colour for every distance.
Create a mesh from these colours.

David Rutten

david@mcneel.com

Poprad, Slovakia

Attachments:

CurveGradient.gh, 4 KB

Permalink Reply by Philipp on July 1, 2012 at 10:24am

BTW is it possible to make coloured mesh transparent?

Permalink Reply by David Rutten on July 1, 2012 at 12:01pm

No.

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Matthew C Short on July 1, 2012 at 1:10pm

That's it!! Thank You!!

One question though, where is the download for the version of grasshopper you're using(0.9), the download link provides only 0.8 (which is what I have). The .gh file won't run my version.

Permalink Reply by Michael Pryor on July 1, 2012 at 2:22pm

Its a simple definition, just recreate it from the screenshot.

Permalink Reply by Matthew C Short on July 1, 2012 at 3:10pm

Got it working.

Permalink Reply by David Rutten on July 1, 2012 at 3:48pm

You running 0.8.0066?

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Matthew C Short on July 1, 2012 at 4:17pm

Yes, that's the version available from the download link above, I got it working, with a few changes.

Now I need to find out how to convert that greyscale image into a nice relief shape.

I tried using the image sampler, but that doesn't work.

Just takes me a long time, because grasshopper is still really new to me. I broke down the mesh to component parts, now I just need to turn the colors into points based on height, and send those points to create a new mesh/surface.

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