hy guy i want to insert blocks on the polyline every 10meters the lenght could be change, i did that it’s ok but when i create the block, it was created but not in the direction of the normal. i tried with by coordinatesysteme but it did the same thing does anyones could help me ? [image001(4)] [Inkedimage002_LI]

Try this in a code block, it should correct them: zaxis = CoordinateSystem.ZAxis(cs); origin = CoordinateSystem.Origin(cs); yaxis = CoordinateSystem.YAxis(cs); zaxis.Z < 0 ? CoordinateSystem.Rotate(cs,origin,yaxis,180) : cs;

Try using Curve.NormalAtParameter instead of Curve.Normal.

Or like this using BlockReference.ByCoordinateSystem. [image]

hy jensen it has been a long time and you are still the best :wink: :wink: thank you very much

hy guy do you know why when some attribute is upside down? [upside down] and thank you very much for your help

Are you using the normal vector or a coordinate system?

I m using coordinate système as you adviced me

Can you post a snip of what the coordinate systems look like? The Z-axis might be pointing down…

[image] How to get a vector for each point at curve Revit I personally don’t like rebuilding geometry because it makes incorrect information sometimes. In this case, You need to sort out the normal vectors by crossing with tangent vector. See the image below. [backup_2021-08-06_08-30-44] before sorting [image] after sorting [image] if you change the number in the blue circle to -1. you could get opposite direction normal.

you are right the Z axis is pointing down do you have a solution ? best regard [image001(8)] [image001(9)]

Insert blocks on the curve in the direction of de normal

Civil 3D

hosneyalaa May 11, 2022, 8:50pm 10

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Insert blocks on the curve in the direction of de normal

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