Replies to This Discussion

Permalink Reply by Faberyayo on June 7, 2013 at 4:17am

PointAt() is simply a method that gives the Point3d at a particular parameter of the line. It does give any provision to change the properties of the line at that parameter.

If you create a new point at that parameter

Point3d newPt = exampleLine.PointAt(0);

then you can change/set the Z co-ordinate of newPt. This is what is explained in the SDK by 

public double Z { get; set; }

In order to change the Z co-ordinate of the start point of exampleLine, try this

private void RunScript(Line exampleLine, double z, ref object A)
{
   exampleLine.FromZ = exampleLine.From.Z + z;
   A = exampleLine;
}

Permalink Reply by pepe ballesteros on June 7, 2013 at 5:02am

thanks for your answer.

very clear.

PointAt() returns a reference value ?

Permalink Reply by Faberyayo on June 7, 2013 at 5:28am

In plain English, yes, you could say that.

Permalink Reply by Faberyayo on June 7, 2013 at 5:52am

What is important to understand from the SDK is what properties of Line can be "set". These are From point, To point, FromX co-ordinate, FromY co-ordinate, etc.

Based on this, you can change the start point with

exampleLine.From = newPoint;

Similarly, you can change its co-ordinate with

exampleLine.FromX = newCoordinate;

But again, if you try

exampleLine.From.X = newCoordinate;

this will not work, because Line does not have a method or property to "set" the co-ordinate in this manner.

I hope this helped to understand things better!

Permalink Reply by Faberyayo on June 7, 2013 at 5:45am

Ooops, I meant to say "It does NOT give any provision to change the properties..." :)