# -*- coding: utf-8 -*-
+# Copyright (C) 2014-2021 EDF R&D
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+#
+"""Calcul de produit mixte pour orientation"""
import logging
-from geomsmesh import geompy
-# -----------------------------------------------------------------------------
-# --- calcul de produit mixte pour orientation
+from .geomsmesh import geompy
-def produitMixte(o, p1, p2, p3):
- """
- produit mixte de 3 vecteurs a partir d'une origine et 3 points
- """
- coordo = geompy.PointCoordinates(o)
- coordp1 = geompy.PointCoordinates(p1)
- coordp2 = geompy.PointCoordinates(p2)
- coordp3 = geompy.PointCoordinates(p3)
- u = [coordp1[0] - coordo[0], coordp1[1] - coordo[1], coordp1[2] - coordo[2]]
- v = [coordp2[0] - coordo[0], coordp2[1] - coordo[1], coordp2[2] - coordo[2]]
- w = [coordp3[0] - coordo[0], coordp3[1] - coordo[1], coordp3[2] - coordo[2]]
- pm = (u[0]*v[1]*w[2] + v[0]*w[1]*u[2] + w[0]*u[1]*v[2]) - (u[0]*w[1]*v[2] + v[0]*u[1]*w[2] + w[0]*v[1]*u[2])
- logging.debug('pm=%s', pm)
- return pm
+def produitMixte(origine, point_1, point_2, point_3):
+ """produit mixte de 3 vecteurs a partir d'une origine et 3 points"""
+ coordo = geompy.PointCoordinates(origine)
+ coord_1 = geompy.PointCoordinates(point_1)
+ coord_2 = geompy.PointCoordinates(point_2)
+ coord_3 = geompy.PointCoordinates(point_3)
+ o_1 = [coord_1[0] - coordo[0], coord_1[1] - coordo[1], coord_1[2] - coordo[2]]
+ o_2 = [coord_2[0] - coordo[0], coord_2[1] - coordo[1], coord_2[2] - coordo[2]]
+ o_3 = [coord_3[0] - coordo[0], coord_3[1] - coordo[1], coord_3[2] - coordo[2]]
+
+ prmi = ( o_1[0]*o_2[1]*o_3[2] + o_2[0]*o_3[1]*o_1[2] + o_3[0]*o_1[1]*o_2[2] ) \
+ - ( o_1[0]*o_3[1]*o_2[2] + o_2[0]*o_1[1]*o_3[2] + o_3[0]*o_2[1]*o_1[2] )
+
+ logging.debug('prmi=%s', prmi)
+
+ return prmi
