gabriel's Page

Filip Mesko replied to gabriel's discussion inflate + collide in the group Kangaroo

"Hi Daniel, I tried to make a definition that would collide two inflated meshes, but I have no idea how to check for inclusions etc. according to your description above. Currently, I draw lines between the vertices of each mesh and use those…"

Mar 21, 2011

Daniel Piker replied to gabriel's discussion inflate + collide in the group Kangaroo

"Hi Gabriel, See this discussion for a little more info on collisions with Kangaroo http://www.grasshopper3d.com/xn/detail/2985220:Comment:147114 I can see how collision between inflating meshes would be quite a nice thing to have, and maybe there is…"

Jan 27, 2011

gabriel added a discussion to the group Kangaroo

inflate + collide

hey, i tried modifying the inflate definition to compute collisions between bubbles...i'm using a interconnection-PLaw system, and...A; it's not working, B; i feel like there should be a better way...what's the standard kangaroo collision method? i checked out the cradle definition...but it's between single points...See More

Jan 27, 2011

2 Comments

Daniel Piker replied to gabriel's discussion pull to surface, general questions in the group Kangaroo

"There were a few things off with the settings, but the main problem here was that you need to start with something like a reasonable mesh before you start trying to equalize it. It looked like you were using just the rhino Mesh from NURBS object,…"

Jan 23, 2011

gabriel replied to gabriel's discussion pull to surface, general questions in the group Kangaroo

"here's my file. thanks for taking a look at it!"

Jan 23, 2011

Daniel Piker replied to gabriel's discussion pull to surface, general questions in the group Kangaroo

"Hi Gabriel, Thanks for posting your questions, I'll do my best to answer them To help me see more clearly what you are trying to achieve could you post the rhino file referenced by this gh definition ?"

Jan 23, 2011

gabriel added a discussion to the group Kangaroo

pull to surface, general questions

hey...so i'm working with weaverbird and kangaroo, trying to constrain a mesh's points to a brep, and using forces to optimize/equalize their position...and eventually tweak the subdivision based on attributes of the brep/mesh; functions of curvature, deviation, etc. i started just by trying to constrain the points and have them equalize, treating each mesh wire as identical springs (like daniels gif of equalizing on a stretched sphere). but immediately i have crashes, "out of index" errors,…See More

Jan 21, 2011

3 Comments

gabriel replied to Danijel Ivanusevic's discussion Inflatables example? in the group Kangaroo

"+1 !"

Jan 20, 2011

Dedackelzucht replied to gabriel's discussion brep normals

"I love Grasshopper! There are many ways to Rome! :-)"

Dec 16, 2010

gabriel replied to gabriel's discussion brep normals

"cool, that's basically what i imagined...too bad the brepCP component doesn't just return uv/normal data...*Ahem* i got the definition to work, but it's just super slow now because of how many points i'm dealing with and…"

Dec 16, 2010

Danny Boyes replied to gabriel's discussion brep normals

"Hi Gabriel, There is a BRep CP component but it doesn't supply you with finer details like which surface and what UVs but you can filter this out from an Exploded Brep by looking for the shortest distance from the CP to the various…"

Dec 16, 2010

gabriel posted a discussion

brep normals

basically, my goal is to get the closest point on a brep (from a sample point) and then get a surface normal value from whatever brep surface the closest point happens to be on. my best guess would be to explode the brep, get all closest points from all surfaces, then find the one out of that set that's spatially closest. but this is not a very elegant solution...it's a lot of computation...and i actually haven't even succeeded in writing a working definition. any ideas?See More

Dec 16, 2010

3 Comments

gabriel joined Daniel Piker's group

Kangaroo

Kangaroo is a Live Physics engine for interactive simulation, optimization and form-finding directly within Grasshopper. See More

Nov 22, 2010

78 Comments

gabriel replied to Andy Edwards's discussion Grasshopper should match multiple input trees more intelligently

"just found this conversation after encountering a similar data problem...i agree with your concept of the basic scheme. maybe for now it would suffice to have a better tool for 'merging' data streams; it could do more custom merging…"

Nov 16, 2010

Jes Tonsgaard replied to gabriel's discussion confusing preview shading

"Yeah, I have this as well.... Actually It has been like that for many versions... It can be disturbing when working with both Rhino and grasshopper opjects that GH objects are allways displayed on top."

Mar 10, 2010

gabriel replied to gabriel's discussion confusing preview shading

"the shader object can just change around the look of the surface...but all surfaces created by grasshopper in preview mode don't obey distance-based rules, i.e. they're always visible even if they should be blocked by another object closer…"

Mar 10, 2010