MMeshIntersector in Python API 2.0

[Angelo]

Has anyone had any success using MMeshIntersector in python api 2.0?

import maya.api.OpenMaya as om

import pymel.core as pm

obj = pm.polyCube(ch=0)[0]

path = om.MGlobal.getSelectionListByName(obj.name()).getDagPath(0)

matrix = path.inclusiveMatrix()

node = path.node()

intersector = om.MMeshIntersector()

intersector.create(node, matrix)

This bit of code gives me a RuntimeError:

"More keyword list entries (12) than format specifiers (2)"

[mnhan]

I had the same problem, I also tried mesh.extendToShape().node() but got the same RuntimeError.

could not figure out why, I end up using MFnMesh.getClosestPoint()

[Angelo]

So I'm convinced this is a Maya bug. I was able to partially create it. I figured out you have to get the path to the shape node instead of the transform. Maya is usually able to handle this but it doesn't for MMeshIntersector for some reason. What still doesn't work is the second parameter for the MMeshIntersector.create(). For some reason, it doesn't want to accept the MMatrix. Its not in the documentation but I found out you don't have to feed in the matrix to create the MMeshIntersector object.

import maya.api.OpenMaya as om

import pymel.core as pm

obj = pm.polyCube(ch=0)[0].getShape()

path = om.MGlobal.getSelectionListByName(obj.name()).getDependNode(0)

intersector = om.MMeshIntersector()

intersector.create(node)

This bit of code should work. The obj's matrix isn't taken into account, again because I think its bugged.

[Meng-Han Ho@Gmail]

You are right, creation without feeding matrix to intersector will work.

But, the same Runtime error will still happen when you run

intersector.getClosestPoint(referencePnt, maxDist)

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