Cull edge points of a grid

Replies to This Discussion

Permalink Reply by David Rutten on January 19, 2012 at 6:00am

Hi Masashi,

how are the points in the grid defined? Are they all in a single ordered list? Are they all in a single unordered list? Are they grouped in columns and rows?

As with most things, there are many ways to solve this. Some are simple, some are difficult. Some are simple only if certain conditions are met. For example, if you have a curve which represents the boundary of the grid then it becomes a piece of cake to remove the boundary points, be they stored ordered or unordered.

The more information you can give us regarding your particular problem the larger the chance that a simple solution can be proposed.

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Permalink Reply by Masashi Uemura on January 19, 2012 at 6:17am

Hi david,

The point is on the point of intersection of the grid.

How can you choose the point except the edge of lattice if you do it?

I am not good at much English. But a reply helps it very much.

 

Attachments:

• grid_edge_center.gh, 4 KB

Permalink Reply by Chris Tietjen on January 19, 2012 at 6:54am

Permalink Reply by Masashi Uemura on January 19, 2012 at 7:09am

Thank you.

I challenge it based on this.

Permalink Reply by David Rutten on January 19, 2012 at 7:05am

If the grid boundary is convex, you can use a Convex hull to determine which points are on the boundary.

--

David Rutten

david@mcneel.com

Poprad, Slovakia

Attachments:

• CullByConvexHull.gh, 3 KB

Permalink Reply by Masashi Uemura on January 19, 2012 at 7:11am

Thank you for teaching it kindly.

arigato gozaimasu!!