How can we calculate the distance between 2 nodes or vertices using scripting?

Erik Kostson

We have a named selection called here 'test_ns', that has either 2 nodes or 2 vertices. How can we then calculate the distance between 2 nodes or vertices using scripting?

Erik Kostson

#Below is one way of doing this:



myNS = ExtAPI.DataModel.GetObjectsByName("test_ns")[0] #((we need 2 nodes or vertices in NS only))

allNodeIds = []

geomIds = myNS.Location.Ids

Mesh = ExtAPI.DataModel.MeshDataByName("Global")

n=[]

veryes=0

nodyes=0

if myNS.Location.SelectionType == SelectionTypeEnum.GeometryEntities:

veryes=1

for geomId in geomIds:

#print('vertex scoping')

mR = Mesh.MeshRegionById(geomId)

n.append(mR)

nodeIds = mR.NodeIds

allNodeIds.extend(nodeIds)

else:

#print('node scoping')

nodyes=1

MeshData=ExtAPI.DataModel.MeshDataByName("Global")

allNodeIds = myNS.Location.Ids

for node in allNodeIds:

n.append(MeshData.NodeById(node))


#calculate distance for 2 nodes only

if len(allNodeIds)==2 and veryes==1:

print('calculate distance:')

n1x=n[0].Nodes[0].X

n1y=n[0].Nodes[0].Y

n1z=n[0].Nodes[0].Z

n2x=n[1].Nodes[0].X

n2y=n[1].Nodes[0].Y

n2z=n[1].Nodes[0].Z

distc=sqrt((n2x-n1x)**2+(n2y-n1y)**2+(n2z-n1z)**2)

print(distc)

elif len(allNodeIds)==2 and nodyes==1:

print('calculate distance:')

n1x=n[0].X

n1y=n[0].Y

n1z=n[0].Z

n2x=n[1].X

n2y=n[1].Y

n2z=n[1].Z

distc=sqrt((n2x-n1x)**2+(n2y-n1y)**2+(n2z-n1z)**2)

print(distc)