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# -*- coding: utf-8 -*-
# Set the current view perpendicular to the selected face
# Place la vue perpendiculairement a la face selectionnee
# 2013 Jonathan Wiedemann, 2016 Werner Mayer, 2020 <raidho36>
from pivy import coin
def pointAt(normal, up):
z = normal
y = up
x = y.cross(z)
y = z.cross(x)
rot = App.Matrix()
rot.A11 = x.x
rot.A21 = x.y
rot.A31 = x.z
rot.A12 = y.x
rot.A22 = y.y
rot.A32 = y.z
rot.A13 = z.x
rot.A23 = z.y
rot.A33 = z.z
return App.Placement(rot).Rotation
s=Gui.Selection.getSelectionEx()
obj=s[0]
face = obj.SubObjects[0]
dir = face.normalAt((face.ParameterRange[0]+face.ParameterRange[1])/2,(face.ParameterRange[2]+face.ParameterRange[3])/2 )
cam = FreeCADGui.ActiveDocument.ActiveView.getCameraNode()
if dir.z == 1 :
rot = pointAt(dir, App.Vector(0.0,1.0,0.0))
elif dir.z == -1 :
rot = pointAt(dir, App.Vector(0.0,1.0,0.0))
else :
rot = pointAt(dir, App.Vector(0.0,0.0,1.0))
cam.orientation.setValue(rot.Q)
Gui.SendMsgToActiveView("ViewSelection")