Macro Align View to Face

{{Macro |Name=Macro Align View to Face |Icone=Macro_Align_View_to_Face.png |Description=This macro aligns the current view to a selected face |Author=Rockn |Version=3.1 |Date=2023/11/12 |FCVersion=All |Download=[https://www.freecadweb.org/wiki/https://raw.githubusercontent.com/FreeCAD/FreeCAD-documentation/master/wiki/images/d/d7/Macro_Align_View_to_Face.png ToolBar Icon] }}

Description

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

Usage

Select a face on an object
Run the macro

Script

ToolBar Icon

Macro_Align_View_to_Face.FCMacro {{MacroCode|code=

-- coding: utf-8 --

Set the current view perpendicular to the selected line

Place la vue perpendiculairement a la line selectionnee

2013 Jonathan Wiedemann,

2016 Werner Mayer,

2022 tchernomax, https://forum.freecadweb.org/viewtopic.php?p=630019#p630019

2023 FreeCutter, modifications towards linked objects like in workbench Assembly 4 , https://forum.freecad.org/viewtopic.php?p=718516#p718516

title = "Align_View_to_Face" author = "Jonathan Wiedemann (Rockn)" url = "https://www.freecadweb.org/" Wiki = "https://wiki.freecadweb.org/Macro_Align_View_to_Face" version = "3.1" date = "2023/11/12" #YYYY/MM/DD

from pivy import coin

import FreeCAD as app import FreeCADGui as gui

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

def get_selection_and_turn_view(): doc = app.activeDocument() if doc is None: app.Console.PrintWarning('Align_view_to_face: No file open, nothing to do\n') returnselection = gui.Selection.getSelectionEx('', 0) # Returns a vector of selection objectsif not selection: app.Console.PrintWarning('Align_view_to_face: Nothing selected, nothing to do\n') returncam = FreeCADGui.ActiveDocument.ActiveView.getCameraNode()''' used to understand the 'getSelection' results for selectionobject in selection: object = selection_object.Object sub_fullpaths = selection_object.SubElementNames if not sub_fullpaths:

An object is selected, not a face, edge, vertex.

        print(object_.Name)
    for sub_fullpath in sub_fullpaths:
        # One or more subelements are selected.
        print(object_.Name, sub_fullpath)
'''sel = selection[0]
face = sel.SubObjects[0]
if face.Area == 0:          # trying to avoid errors due to wrong selected objects
    app.Console.PrintWarning('Align_view_to_face: Please select a face - not an edge or vertex\n')
    return
dir = face.normalAt(0,0)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")
app.Console.PrintWarning('Align_view_to_face: Done\n')

if name == 'main': get_selection_and_turn_view()

}}

⏵ documentation index > Macro Align View to Face

This page is retrieved from https://github.com/FreeCAD/FreeCAD-documentation/blob/main/wiki/Macro_Align_View_to_Face.md

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