Creating semi random waves

[Discus84]

I'd like to be able to create this effect but specify min/max distance between lines.

Any ideas appreciated.

Thanks!

Edited September 3 by Discus84

[SLW210]

Are these 3D objects of some type?

 

Splines? 3D Polylines?

[Discus84]

This will be a flat array which looks like a 3d. Essentially a number of lines/splines. 

 

[SLW210]

I'm pretty sure that's something that AutoCAD cannot do out of the box.

 

You posted this in the AutoCAD 3D Modelling & Rendering Forum, were intending to post in the AutoLISP, Visual LISP & DCL Forum?

[BIGAL]

Just a side comment did a wave 3D Tin surface for a huge tract of land, but it was a single wave in one direction. think ocean waves, the site was like 2.5km by 2.5km. Had bridges, ponds, walkways, cut through the wave surface.

 

Using a formula could do one wave but extrapolating that formula for multiple waves would need mathematical modelling, with subtle changes to the formula.

 

Looking at the image the left and right edges are sort of fixed widths a slight variation. If you put up and down lines on the multi simple straight plines and reform them using again a wave formula.

 

No idea where to even start.

 

 

Edited September 5 by BIGAL

[Discus84]

I thought about putting an array of parallel lines flat, then pinching/lofting resulting plane at random angles in Z, and then projecting the result onto XY plane ...

 

[lrm]

Create several splines on the XY plane then move each one in Z so that they have increasing Z values from one spline to the next. In this example the z values for the splines are 0.0, 2, 4, and 6.

Use LOFT to create a surface from the splines (shown in red).

From the Properties panel, change the U isoline property to a larger value (e.g.,12) and the V isoline value to 0.

Select the surface and move the grips to localy adjust the spacing between isolines to meet your requirements.  Note, the green arrows show grips that have been moved to increase spacing between adjacent isolines.

Unfortunatly,  if you need individual polylines or splines on the XY plane you will need to use SECTION to create them individually. For example,section the surface paralle to the XY plane through points at (0,0,0.5), (0,0,1), (0,0,1.5), etc.

Edited September 5 by lrm

[Discus84]

Excellent info.  Maybe the last part can be a script to create the individual polylines. 

In a perfect world I could set the line offsets to a range.

Manual loft makes the offset hard to predict.

 

Edited September 6 by Discus84