123 lines
3.7 KiB
Python
123 lines
3.7 KiB
Python
# ##### BEGIN GPL LICENSE BLOCK #####
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#
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# Author: 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
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# ##### END GPL LICENSE BLOCK #####
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# FreeCAD modules
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import FreeCAD,FreeCADGui
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from FreeCAD import Base
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from FreeCAD import Part
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# FreeCADShip modules
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from surfUtils import Paths
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from surfUtils import Geometry
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from surfUtils import Math
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class Preview(object):
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def __init__(self):
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""" Constructor.
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@param self Auto call object.
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@note Start it as unactive
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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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@param self Auto call object.
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"""
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self.clean()
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self.obj = None
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def update(self, surf, direction, uv):
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""" Update the 3D view printing curve.
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@param self Auto call object.
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@param surf Surf where get the curve.
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@param direction 0 if u direction, 1 if v.
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@param uv Curve uv index, between 0 and 1.
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@return Curve from object (as Part::Feature).
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"""
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# Errors
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if not surf:
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return None
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# Get curve
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if direction == 0:
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curve = self.getU(surf, uv)
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elif direction == 1:
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curve = self.getV(surf, uv)
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else:
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return None
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# Draw at 3D view
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self.clean()
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Part.show(curve.toShape())
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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 = 'surfISOCurve'
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return self.obj
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def getU(self, surf, uv):
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""" Get U curve from object.
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@param self Auto call object.
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@param surf Surf where get the curve.
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@param uv Curve uv index, between 0 and 1.
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@return Curve from object.
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"""
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# Errors
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if not surf:
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return None
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if (uv < 0.0) or (uv > 1.0):
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return None
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# Get UV data
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knots = surf.UKnotSequence
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id0 = knots[0]
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id1 = knots[len(knots)-1]
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# Get curve
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curve = surf.uIso(id0 + uv*(id1-id0))
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return curve
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def getV(self, surf, uv):
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""" Get U curve from object.
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@param self Auto call object.
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@param surf Surf where get the curve.
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@param uv Curve uv index, between 0 and 1.
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@return Curve from object.
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"""
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# Errors
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if not surf:
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return None
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if (uv < 0.0) or (uv > 1.0):
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return None
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# Get UV data
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knots = surf.VKnotSequence
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id0 = knots[0]
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id1 = knots[len(knots)-1]
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# Get curve
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curve = surf.vIso(id0 + uv*(id1-id0))
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return curve
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def clean(self,Destroy=True):
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""" Erase all sections from screen.
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@param self Auto call object.
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@param Destroy True if the object must be destroyed, False otherwise.
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"""
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if not self.obj:
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return
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FreeCADGui.ActiveDocument.hide(self.obj.Name)
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if Destroy:
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FreeCAD.ActiveDocument.removeObject(self.obj.Name)
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self.obj=None
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