FeatureScript: How to query (not in viewer!) points and lines to create planes?

leon_poot

I'd like to create a plane in FS using either:

• three points which I create as variables, vector(x,y,z) * meter
• a line (more or less an axis, since it seems infinite) created using line(point,direction) and a point

how do I query these points and lines so that they can be used? Note that I want to query these in FS; not having the user click anything in the viewer.

mahir

Typically, to create a plane you need an origin and a normal vector. If you created 3 points, you don't need to query anything. You already have vector variables representing those points.

Next, some math. Let's call the points A, B, and C. The origin will be just the average of the 3 points.

origin = (A+B+C)/3

The normal is a little more complicated. You'll need to calculate the cross product of 2 coplaner lines. This can be achieved with the cross command.

normal = cross(C - A, B - A)

Now, you can use the evPlane function.

newPlane = plane(origin, normal)

mahir

Typically, to create a plane you need an origin and a normal vector. If you created 3 points, you don't need to query anything. You already have vector variables representing those points.

Next, some math. Let's call the points A, B, and C. The origin will be just the average of the 3 points.

origin = (A+B+C)/3

The normal is a little more complicated. You'll need to calculate the cross product of 2 coplaner lines. This can be achieved with the cross command.

normal = cross(C - A, B - A)

Now, you can use the evPlane function.

newPlane = plane(origin, normal)

leon_poot

Thank you @mahir, I will have a look at this later today.