Bezier Curve with one vector

Hi,

I'm new to grasshopper and trying to adopt myself to this wonderful world. Having said that I will come up with bunch of questions while I'm trying to achieve my goals.

I tried to make a curve like this but I failed each time:

I wonder if there is anyway to make such a curve with two point and single vector in grasshopper.

Thanks

Replies to This Discussion

Permalink Reply by Farrokh Rostami Kia on January 2, 2016 at 6:15pm

I think I solved the problem. Here is my approach:

GH file: https://goo.gl/HE1bYh

Permalink Reply by David Rutten on January 3, 2016 at 5:16am

But what is the condition of the curve at the other end?

Permalink Reply by Farrokh Rostami Kia on January 3, 2016 at 10:27am

In 3DsMax you have the ability to define a vertex in spline as a "corner, bezier corner, bezier or smooth". The image I uploaded first was first point bezier corner and the second one corner. In this situation only the first tangent vector controls the whole curve.

In Grasshopper since I couldn't find any option like that. Each bezier-spline curve should have a vector at each point. So, in order to have the form (scenario) I was looking for, I defined the second vector by a two point vector from 2nd point to 2nd point itself. But in a case that I would like to have a control on that point too, I can define the 2nd vector as a vector which starts from 2nd point to a point on the line which passes through the end point of first vector.

Its the geometry which have been used in Iranian arches.