Macro Align View to Face

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Macro Align View to Face

Description
Cette macro aligne la vue en cours sur la face sélectionnée

Version macro : 3.1
Date dernière modification : 2023/11/12
Version FreeCAD : Toutes
Téléchargement : Icône de la barre d'outils
Auteur: Rockn
Auteur
Rockn
Téléchargement
Icône de la barre d'outils
Liens
Version Macro
3.1
Dernière modification
2023/11/12
Version(s) FreeCAD
Toutes
Raccourci clavier
None
Voir aussi
None

Description

Cette macro fait pivoter la vue en courspour la faire pointer perpendiculairement sur une face sélectionnée d'un objet existant.

Utilisation

  1. Sélectionnez la face d'un objet
  2. Lancez la macro

Script

Icône de la barre d'outils

Macro_Align_View_to_Face.FCMacro

# -*- 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')
		return
	
	selection = gui.Selection.getSelectionEx('', 0) # Returns a vector of selection objects
	
	if not selection:
		app.Console.PrintWarning('Align_view_to_face: Nothing selected, nothing to do\n')
		return
	
	cam = FreeCADGui.ActiveDocument.ActiveView.getCameraNode()
	
	''' used to understand the 'getSelection' results
	for selection_object 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()