intersect bsplinesurface and line [solved]

[sliptonic]

I have a bsplinesurface that I've constructed from a set of points. I also have a point inside the XY bounds of the surface and I want to find the corresponding Z coordinate on the surface.

If I construct a line that runs through X,Y,0 and X,Y,1, Can I find where that line intersects the surface?

[Chris_G]

Something like this ? :

Code: Select all

bs = Part.BSplineSurface()
pt = FreeCAD.Vector(0.2,0.6,100.)

vertical_line = Part.Line(pt, pt+FreeCAD.Vector(0,0,1))
# intersectCS() : Returns all intersection points and curve segments between the curve and the surface.
points, curves = vertical_line.intersectCS(bs)
points
# [<Point (0.2,0.6,0) >]
curves
# []

[sliptonic]

Exactly like that. Thanks Chris_G.