More Wishlist Items

David,

I understand that you are busy with a new release but I would like to record some wishlist items before I forget. I am going to list them for the record.

1. SURFACE TRIM, both with a curve or another surface.
(I have been using a VB component that I found on this forum which allows surfaces to be trimmed using curves. That is great. But it would be good to have this as a core component in GH).

2. Curve MIDPOINT: Preferably “Endpoints” component should include midpoint too… In my experience, getting a midpoint by first dividing a curve and then selecting an item from the list is too cumbersome for something that seems to be quite basic.

3. PERPENDICULAR: Ability to pick the perpendicular direction or draw a line perpendicular to a curve in a given plane and/or at a given point. Again, I feel like this is a basic function which is used quite often.

Thank you.
Sameer

Replies to This Discussion

Permalink Reply by Vicente Soler on September 11, 2009 at 8:05pm

For points 2 and 3:

Permalink Reply by David Rutten on September 11, 2009 at 9:23pm

1. Is actually quite difficult. We can use curves for trimming in the Rhino viewports because there is always a Cplane or View direction to fall back on. I agree that we badly need trimming tools, but it's not at all clear to me what kind of inputs are useful.

2. As Vicente pointed out, EvalLength at 0.5 will give you the midpoint. Is this still too cumbersome?

3. There are either 2 perpendicular directions or no perpendicular directions if the curve happens to be perpendicular to the base plane. How do we handle these?

Permalink Reply by Vicente Soler on September 11, 2009 at 10:15pm

About trimming, apparently many people seem mildly happy with this simple method i posted some time ago:
http://www.grasshopper3d.com/forum/topics/surfacetrim-workflow
(it's just the rhutil.RhinoSplitBrepFace method)
Maybe you can make that into a component for the time being until you can think of a good solution for this, since some many people are asking for it.

Permalink Reply by David Rutten on September 11, 2009 at 9:31pm

I'll add a custom object that allows you to evaluate curves at a given location. Something like EvalLength, but a bit more compact and more easily changable. This will allow you to create points at start, mid, end, 25%, 33.68% or whereever else you want equally easy.

Permalink Reply by Vicente Soler on September 11, 2009 at 10:05pm

Can't you do all this already using only the evallength component?

Btw, what are you doing posting at 5 AM CET time? i hope you are not out of europe again ...if so, McNeel really needs to hire more people for GH.

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