Check if point3d is member of the list of points?

Replies to This Discussion

Permalink Reply by Mostapha Sadeghipour Roudsari on May 19, 2015 at 4:32am

False is what you should get. An object is only equal to itself.

Why don't you test for distance? If the distance is smaller than tolerance then the points are the same.

Permalink Reply by Petar Pejic on May 19, 2015 at 4:42am

but should'n it compare coordinates of each point?

when I print my point variable I get something like [0,100,150]. Is there a way to see if there is a point with same coordinates in the list of points?

Permalink Reply by djordje on May 19, 2015 at 5:32am

You are probably comparing a guid with Point3d.
So either set your "listPoints" input "Type hint" to "Point3d" or add the coerce3dpoint function:

bBoxNewBrep = rs.coercebrep(bBoxNew)
vertexBrep = bBoxNewBrep.DuplicateVertices()
listPointsObj = [rs.coerce3dpoint(pt) for pt in listPoints]

for j in range(0, len(vertexBrep)):
    if vertexBrep[j] in listPointsObj:
        testGrid = "true"
        break
    else:
        testGrid = "false"

Btw, if your listPoints list has only one point, then you do not need the for loop at all, when using python's "in" operator:

bBoxNewBrep = rs.coercebrep(bBoxNew)
vertexBrep = bBoxNewBrep.DuplicateVertices()
pt = rs.coerce3dpoint(listPoints[0])

if pt in vertexBrep:
    testGrid = "true"
else:
    testGrid = "false"

Permalink Reply by Petar Pejic on May 19, 2015 at 5:44am

Djordje, thank you for reply. I would like to raise a couple of questions:

if I use coerce, will I get rhino object or a point3d class?

also, is the break going to exit all nested loops, or only the last one?

Permalink Reply by djordje on May 19, 2015 at 6:55am

Hi Petar,
You will get a point3d object.
"break" will only break your last loop.