Vector3d -> Point3d ?

[antantantant]

Hi all, another simple question.

I would like to define a point by another point + a vector. However, in my Ruby, pt + vec returns another vec object, rather than a pt. So, is there a simple way to convert this returning vec to pt, cos I guess they all belong to array right? Thanks!

-Max

[Matt666]

point3D.offset(Vector3D) ? (thank you Didier !! )

[antantantant]

NICE ! Thank you all!

[Jim]

Adding a Vector3d to a Point3d should return a Point3d, however the converse is not true. Are you sure of the types of the objects you are "adding"?

@unknownuser said:

cos I guess they all belong to array right?

No! Point3d's and Vector3d's are distinct classes and not related to Arrays. However, SketchUp does add a few methods of "convenience" to the Array class, so that (in some cases) you can use an Array "as if" it were a Point3d or Vector3d.

pt = Geom;;Point3d.new
v = Geom;;Vector3d.new (1, 0,0)
pt + v ==> Point3d(1, 0, 0)
v + pt ==> Error; #<ArgumentError; (eval);45;in `+'; Cannot convert argument to Sketchup;;Vector3d>
v + [1,2,3] ==> Vector3d(2, 2, 3)

In this example, the Array ([ 1, 2, 3] ) is made into a Vector3d before the '+' operation.

[antantantant]

Thank you Jim!
BTW, how can I change my profile? I have no picture nor description for myself.

[Jim]

"ant"*4

I hope that made sense.

You can access your profile via the User Control Panel link: UCP

[antantantant]

That does. I guess I misunderstood '+' from the start. Thanks again.