Iterative Boolean Subtract

I am currently attempting to animate an iterative process using grasshopper and rhino. I have a list of static boxes (white), then a list of mobile elements (red, moving by a changing random seed number) that will move around and subtract from the static boxes.

The goal is to bake the geometry at each iteration so I can post-process linework/graphics. I have tried using a combination of Nudibranch Bounce, HoopSnake, and a BakeAttributes C# component by Giiulio Piacentino. I feel that they will work, just cant figure it out.

See snapshots below to see what I hope to achieve. The animation will be just 5 seconds, so maybe 25 frames are needed.

Current definition is attached, the problem is on the right side of the definition, and iteration is controlled by Seed/Layers slider wired to Bake Component.

Thank you for the help.

Attachments:

iterative_intersection.gh, 41 KB

Replies to This Discussion

Permalink Reply by Armin Seltz on April 11, 2017 at 9:56am

I do this exact process using an Anemone Loop, providing a frame counter, which you can use to drive things and then use the Object Save component from Lunchbox to export as .obj files. Use the frame counter to also generate file names. Then you just have to make sure you use MeshBrep to turn your Breps into Meshes before they go into Object Save, otherwise you get a dialog about the Mesh Conversion at every frame and its better to do it in GH anyways.

So you end up with a bunch of .obj files, which you can turn into an animation using a plugin. I have one for Maya that works well.

Here is a result of one of those exports, where it was doing some extrude along curve built from midi data: http://www.grasshopper3d.com/video/midi-data-to-animation

Permalink Reply by Karl Kachele on April 12, 2017 at 9:00am

Cheers Armin!

I am not familiar with Maya, and aiming for extracting linework. I ended up baking the geometry to different layers in Rhino, then manually extracting linework with Make2D, export to Illustrator, then Photoshop. A bit tedious my way. I attached the GIF and definition here if you want to take a look. Any ideas for automating the process? or if Maya can produce linework like this?

Attachments:

animation_white-background_small.gif, 2.9 MB
iterative_intersection_int.gh, 39 KB

Permalink Reply by macuso on June 10, 2017 at 7:16pm

I'm not familiar with Maya but I think that Blender can produce something like this. Just check the FreeStyle renderer. Also have option to save as .SVG. Also Blender have an Grasshopper like plugin called Sverchok who can use to write your own definition.

Just a quick google search and found this: http://goinkscape.com/use-blender-freestyle-to-export-svg-artwork/

RSS