Planes on closed periodic curves

Well,

I confess that I can't get the logic of CPlane orientation along closed and periodic curves (actually the absence of it). See these simple cases.

best, Peter

Attachments:

PLANES-ON-CURVES.3dm, 144 KB
PLANES-ON-CURVES.gh, 16 KB

Replies to This Discussion

Permalink Reply by peter fotiadis on January 8, 2012 at 9:36am

See this as well, this time with humble 2pt lines

Attachments:

PLANES-ON-LINES.gh, 24 KB

Permalink Reply by alex on January 14, 2012 at 7:10pm

thanks so much for sharing this I was looking to find some help and there you go:).I work for an popup displays company down but just moved from usa

Permalink Reply by peter fotiadis on January 15, 2012 at 12:29am

I forgot to attach the "right" one (i.e. with a meaningful Gate per case control).

Attachments:

PLANES-ON-CURVES2.gh, 17 KB

Permalink Reply by peter fotiadis on January 15, 2012 at 2:06am

Here's v2 (lines) with some added stuff in order to visualize the chaos (spot the color of balls controlled by the dot product...meaning...etc etc)

Attachments:

PLANES-ON-LINES2.gh, 41 KB

Permalink Reply by peter fotiadis on January 15, 2012 at 2:35am

Given the opportunity this chaotic CPlane orientation ... brings me in despair with regard more complex things > for instance this non elastic tensile membrane definition (WIP for some sort of stadium) is impossible (at least to me) to control with regard a myriad of proper mast/cable placement (based on various CPlanes - not shown).

I'll switch to Gen Comp to do that

Permalink Reply by Steve Lewis on February 4, 2012 at 7:39pm

All you need to do is use the perpindicular frame to a curve component then the local xy axes are always consistent - see attached image.

I also sometimes bulid my plane using vector geometry using vector geometry using GH vector components. I then use the 3 point plane component to build a plane from this vector geometry. Using vector geometry is always more accurate.

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