147 lines
6.5 KiB
Python
147 lines
6.5 KiB
Python
#***************************************************************************
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#* *
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#* Copyright (c) 2011, 2012 *
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#* Jose Luis Cercos Pita <jlcercos@gmail.com> *
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#* *
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#* This program is free software; you can redistribute it and/or modify *
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#* it under the terms of the GNU Lesser General Public License (LGPL) *
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#* as published by the Free Software Foundation; either version 2 of *
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#* the License, or (at your option) any later version. *
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#* for detail see the LICENCE text file. *
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#* *
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#* This program 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 *
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#* GNU Library General Public License for more details. *
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#* *
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#* You should have received a copy of the GNU Library General Public *
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#* License along with this program; if not, write to the Free Software *
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#* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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#* USA *
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#* *
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#***************************************************************************
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# FreeCAD modules
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import FreeCAD,FreeCADGui
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from FreeCAD import Base, Vector
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import Part
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# FreeCADShip modules
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from shipUtils import Paths, Translator
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class Preview(object):
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def __init__(self):
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""" Constructor.
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"""
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self.obj = None
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self.reinit()
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def reinit(self):
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""" Reinitializate drawer.
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"""
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self.clean()
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def update(self, L, B, T, sectionsL, sectionsB, sectionsT, shape):
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""" Update the 3D view printing annotations.
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@param L Ship Lpp.
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@param B Ship beam.
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@param T Ship draft.
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@param sectionsL Transversal sections.
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@param sectionsB Longitudinal sections.
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@param sectionsT Water lines.
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@param shape Ship surfaces shell
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@return Sections object. None if errors happens.
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"""
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FreeCAD.Console.PrintMessage(Translator.translate('Computing sections...\n'))
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# Destroy all previous entities
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self.clean()
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# Receive data
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nL = len(sectionsL)
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nB = len(sectionsB)
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nT = len(sectionsT)
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if not (nL or nB or nT):
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return None
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# Found sections
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sections = []
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for i in range(0,nL):
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pos = sectionsL[i]
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# Cut ship
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section = shape.slice(Vector(1.0,0.0,0.0), pos)
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for j in range(0,len(section)):
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edges = section[j].Edges
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# We have 3 cases,
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# * when section is before midship, then only starboard section will be considered
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# * When section is midship, then all section must be preserved
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# * When section is after midship, then only board will be considered
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if pos > 0.01:
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# Look for edges at the wrong side and delete it
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for k in range(len(edges)-1,-1,-1):
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edge = edges[k]
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bbox = edge.BoundBox
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if bbox.YMin < -0.001:
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del edges[k]
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elif pos < -0.01:
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# Look for edges at the wrong side and delete it
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for k in range(len(edges)-1,-1,-1):
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edge = edges[k]
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bbox = edge.BoundBox
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if bbox.YMax > 0.001:
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del edges[k]
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sections.extend(edges)
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for i in range(0,nB):
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pos = sectionsB[i]
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section = shape.slice(Vector(0.0,1.0,0.0), pos)
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for j in range(0,len(section)):
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edges = section[j].Edges
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# Longitudinal sections will preserve board and starboard ever. Since we take from one side,
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# we nned to mirror it.
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section[j] = section[j].mirror(Vector(0.0, 0.0, 0.0),Vector(0.0, 1.0, 0.0))
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edges2 = section[j].Edges
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sections.extend(edges)
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sections.extend(edges2)
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for i in range(0,nT):
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pos = sectionsT[i]
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section = shape.slice(Vector(0.0,0.0,1.0), pos)
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for j in range(0,len(section)):
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edges = section[j].Edges
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# We have 3 cases,
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# * when section is below draft, then only board section will be considered
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# * When section is draft, then all section must be preserved
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# * When section is above draft, then only starboard will be considered
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if pos > T + 0.01:
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# Look for edges at the wrong side and delete it
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for k in range(len(edges)-1,-1,-1):
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edge = edges[k]
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bbox = edge.BoundBox
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if bbox.YMax > 0.001:
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del edges[k]
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elif pos < T - 0.01:
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# Look for edges at the wrong side and delete it
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for k in range(len(edges)-1,-1,-1):
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edge = edges[k]
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bbox = edge.BoundBox
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if bbox.YMin < -0.001:
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del edges[k]
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sections.extend(edges)
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# Convert all BSplines into a shape
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if not sections:
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msg = Translator.translate('Any valid ship section found')
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FreeCAD.Console.PrintWarning(msg)
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return
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obj = sections[0]
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for i in range(1,len(sections)):
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obj = obj.oldFuse(sections[i]) # Only group the edges, don't try to build more complex entities
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# Create the representable object
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Part.show(obj)
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objs = FreeCAD.ActiveDocument.Objects
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self.obj = objs[len(objs)-1]
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self.obj.Label = 'OutlineDraw'
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return self.obj
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def clean(self):
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""" Erase all annotations from screen.
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"""
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if not self.obj:
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return
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FreeCAD.ActiveDocument.removeObject(self.obj.Name)
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self.obj = None
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