Blocks on Perpendicular Polyline at irregular intervals

[mickael.nowak788778]

I'm looking to find out if it is possible to align a block perpendicularly at irregular intervals on a 2D poly

Apart from the "Divide / Measure" commands which partially meet this need because the interval can only be regular.
Is there a function on Civil 3D that would allow this? Or a lisp?
Thanks in advance,

[peter]

I'm looking to find out if it is possible to align a block perpendicularly at irregular intervals on a 2D poly

Apart from the "Divide / Measure" commands which partially meet this need because the interval can only be regular.
Is there a function on Civil 3D that would allow this? Or a lisp?
Thanks in advance,

The curve functions of visual lisp include ways of getting the length

(vlax-curve-getdistatparam obj (vlax-curve-getendparam obj))

Where obj is the vla-object of the 2d poly.

You can also get a point on the poly at any distance from the end

(vlax-curve-getpointatdist obj 1.5)

for example.

So you can write a routine to get the points

You can also get the slope at any distance

(vlax-curve-getFirstDeriv obj (vlax-curve-getparamatdist obj 1.5))

Using atan you can get the angle in radians and then you can convert radians to degrees

(* 180 (/ sngRadians pi))

So knowing the point an angle you can insert a block anywhere along a 2d polyline aligned with the pline.

It may have a problem at a vertex

P=

[mickael.nowak788778]

Hello, I did not understand

[dlanor]

The answer was, Yes it is possible using vlax-curve functions, if you know the distances from the start or end point.

[BIG-AL]

Google "Chainage.lsp" it has the answers you seek.

[peter]

Hello, I did not understand

I encourage others to practice programming. So I told you how to program it, but didn't give you the code.