Hi,
I utilized the MMeshintersector.getClosestPoint() to get closest point on
a cube. my problem is, that I can`t make use of it (e.g. set the world
position of a locator) because its in local space.
- MMeshIntersector.getClosestPoint gives me a MPointOnMesh
- MPointOnMesh.point gives me a MFloatPoint
I have less knowledge of Matrix, I guess if i would have a child matrix I
could multiply with the parent. Her is the full code:
import maya.api.OpenMaya as om2
selList = om2.MGlobal.getActiveSelectionList()
dag = selList.getDagPath(0)
matr = dag.inclusiveMatrix()
mesh = dag.child(0)
meshIntersect = om2.MMeshIntersector()
meshIntersect.create(mesh) # documentation says, mesh and matrix as
parametres, ...
# but matrix throws me an error, without Matrix
it works I guess
selLoc = om2.MSelectionList()
selLoc.add("locator1")
dagLoc = selLoc.getDagPath(0)
trLoc = om2.MFnTransform(dagLoc)
vec = trLoc.translation(4)
point = om2.MPoint(vec)
pOnMesh = meshIntersect.getClosestPoint(point,1000)
pos3d = pOnMesh.point #this gives the local translation of the mesh`s
transform as MFloatPoint()
# the following is kind of a mess... trying to get the world position of
the point in object space. But it gives me wrong results
XVal = pos3d.x
YVal = pos3d.y
ZVal = pos3d.z
childMatr = om2.MMatrix()
childMatr.setToIdentity()
childMatr.setElement(3,0,XVal)
childMatr.setElement(3,1,YVal)
childMatr.setElement(3,2,ZVal)
worldM = childMatr * matr
targetX = worldM.getElement(3,0)
targetY = worldM.getElement(3,1)
targetZ = worldM.getElement(3,2)
newVec = om2.MVector(targetX, targetY, targetZ)
selLoc2 = om2.MSelectionList()
selLoc2.add("locator2")
dagLoc2 = selLoc2.getDagPath(0)
trLoc2 = om2.MFnTransform(dagLoc2)
trLoc2.setTranslation(newVec, 4)
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