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https://git.salome-platform.org/gitpub/modules/smesh.git
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49 lines
1.8 KiB
Python
49 lines
1.8 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2014-2020 EDF R&D
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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#
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import logging
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from .geomsmesh import geompy
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# -----------------------------------------------------------------------------
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# --- calcul de la position d'une shape par rapport à une face (dessus, dessous, sur la surface même)
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def whichSideVertex(face, vertex, tol = 1.e-3):
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"""
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Position d'un vertex par rapport a une face (non nécessairement plane).
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renvoie 1 si le vertex est du coté de la normale à la face,
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-1 de l'autre coté, 0 si il est sur la face
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"""
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#logging.info('start')
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side = 0
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distance = geompy.MinDistance(vertex, face)
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#logging.debug(" distance %s", distance)
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if distance > tol:
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projection = geompy.MakeProjection(vertex, face)
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normal = geompy.GetNormal(face, projection)
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vect = geompy.MakeVector(projection, vertex)
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angle = geompy.GetAngle(normal, vect)
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#logging.debug(" angle %s", angle)
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side = 1
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if abs(angle) > 10:
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side = -1
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logging.debug("side %s distance %s", side, distance)
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return side
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