Help: Move Line by Point in Z Direction

Replies to This Discussion

Permalink Reply by Luca Anna on February 19, 2014 at 7:59am

Files attached

Attachments:

• a.PNG, 62 KB
• b.PNG, 10 KB
• move line.gh, 8 KB

Permalink Reply by Luca Anna on February 19, 2014 at 8:00am

+ Rhino file

Attachments:

• move line.3dm, 1016 KB

Permalink Reply by Luca Anna on February 19, 2014 at 8:34am

Yes! That's exactly what I wanted to achieve. 

Taking this a bit further, is there another way of achieving this whereby you can control the curve in the z direction at any given point, such as any one of the points shown in the attached image?

Thanks for you time, Once I have this figured out I will be set!

Permalink Reply by Luca Anna on February 19, 2014 at 8:36am

ps I always overlook the simple maths you can use to overcome these sorts of problems, so thanks for reminding me!

Permalink Reply by Luca Anna on February 19, 2014 at 9:25am

I thought what I was attempting something relatively simple, since I'm not experienced I keep messing up, thanks for your help so far, hopefully I'll get this in the end! cheers

Permalink Reply by Matt Gaydon on February 19, 2014 at 12:16pm

Quick Question.. what should the crv beyond the point you have defined the Z value for do,

# Should it keep rising at the same angle/ratio as the curve upto the selected point

or

#Flattern out

or

# drop back down?

 

Just a guess but are you trying to create a wavy ramp?

Permalink Reply by Luca Anna on February 20, 2014 at 3:02am

Hi Matt,

Yes, a wavy ramp sort of thing is what I'm after. I've attached an image of my progress in Rhino, and an Image of the original dwg that I'm extruding and bending.

The idea is that these bench sort of things follow the contours of the topo.

I've had a go and doing it in Rhino with control points, but it feels like grasshopper would speed things up and offer much more control.

Any ideas would be much appreciate

Permalink Reply by Luca Anna on February 20, 2014 at 3:02am

Images

Attachments:

• e.PNG, 78 KB
• 5.jpg, 48 KB

Permalink Reply by Luca Anna on February 20, 2014 at 3:06am

I'd like to to achieve control of the objects height at range points along top surface, thereby creating the up and down effect

Permalink Reply by Danny Boyes on February 19, 2014 at 8:29am

You can use a [Project] component onto a Plane that you construct from a line between the 2 points.

 

Permalink Reply by Matt Gaydon on February 19, 2014 at 8:51am

This is another way of doing it that shouldmake the sloped crv the same in plan as the input crv with the same number of control points, though if you want to change points on the curve at different heights you maybe better developing what marcus has posted.

 

Hope this some help

Matt

Attachments:

• SlopeCrv.gh, 10 KB