Hey Sam
Had a little play with this and came up with this. I'm just learning the
api so just consider it a starting off point. Someone better might chime in
with nicer solution. Its with the 2.0 api, which may require 2015
import maya.api.OpenMaya as om
import maya.api.OpenMayaUI as omui
import maya.cmds as cmds
ctx = 'myCtx'
def onPress():
vpX, vpY, _ = cmds.draggerContext(ctx, query=True, anchorPoint=True)
pos = om.MPoint()
dir = om.MVector()
omui.M3dView().active3dView().viewToWorld(int(vpX), int(vpY), pos, dir)
for mesh in cmds.ls(type='mesh'):
selectionList = om.MSelectionList()
selectionList.add(mesh)
dagPath = selectionList.getDagPath(0)
fnMesh = om.MFnMesh(dagPath)
intersection = fnMesh.closestIntersection(
om.MFloatPoint(pos),
om.MFloatVector(dir),
om.MSpace.kWorld, 99999, False)
if intersection:
print "we're hit!!"
hitPoint, hitRayParam, hitFace, hitTriangle, hitBary1, hitBary2
= intersection
x,y,z,_ = hitPoint
cmds.spaceLocator(p=(x,y,z))
if cmds.draggerContext(ctx, exists=True):
cmds.deleteUI(ctx)
cmds.draggerContext(ctx, pressCommand=onPress, name=ctx, cursor='crossHair')
cmds.setToolTo(ctx)
one good deed deserves another ;)
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