is an Edges straight, get the direction

[bernd]

Checked the methods which can be applied on an Edge ... There are dozens ...

Which is used best to get the information if an edge is straight and if it is straight which is it's direction?

The last one could just be done by subtracting the point vectors, AFAIK.

bernd

[microelly2]

transform it to a nurbs and check whether all poles ar collinear.

[openBrain]

Here my proposal (considering edge is stored in "myEdge" variable) :

Code: Select all

myEdgeVector = myEdge.lastVertex().Point-myEdge.firstVertex().Point
myEdgeDirection = (myEdgeVector + App.Vector()).normalize()
myEdgeIsStraight = ( sum([a**2 for a in myEdgeVector]) == myEdge.Length**2 )

HTH

[brst]

Code: Select all

p = Part.read("path")
e = Part.Edges[0]
if type(e.Curve) == Part.Line:
   print("Edge is a line!")

This will just work for actual lines, but not for Circles or Part.ArcOfCircle that are approximately a line. Then you could go for np.isclose(edge.Length, diffVector, eps) and checking for a large enough radius.