Macro Align View to Face

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Macro Align View to Face.png Macro Align View to Face

Description
This macro aligns the current view to a selected face

Macro version: 2.0
Last modified: 2016-03-06
FreeCAD version: All
Download: ToolBar Icon
Author
Rockn
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Links
Macro Version
2.0
Date last modified
2016-03-06
FreeCAD Version(s)
All
Default shortcut
None
See also
None


Description

This macro rotates the current view to point perpendicularly at a selected face of an existing object.

Usage

  1. Select a face on an object
  2. Run the macro

Script

ToolBar Icon Macro Align View to Face.png

Macro_Align_View_to_Face.FCMacro

# -*- 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

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]
faceSel = obj.SubObjects[0]
dir = faceSel.normalAt(0,0)
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")